Chronicles of a 9 Second Trans Am... Final Chapter
#201
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Originally Posted by 86CamaroDan
I did a whole write up on it under the power adders section. You wont have to go as low as i did and modifiy the alternator case seeing your charge pipe isnt going over the alt...
Well today was dedicated to the GTA, I hit a road block with the Buick, and that's because I have been racing it everywhere I have been taking it lol. Already ordered tubular control arms for the rear as one of the stockers gave up the ghost last night, cuz they are as thick as toothpicks lol, seriously. Can you say.... "snap"...
#202
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: Chronicles of a 9 Second Trans Am... Final Chapter
how in the hell did u manage to do that
#203
Re: Chronicles of a 9 Second Trans Am... Final Chapter
At first I thought it was the e-brake dangling because when I installed new calipers, I left one of the old e-brake brackets that gets bolted to the caliper on when exchanging them, and the new one of course didn't have it, so I had to zippie tie one of them out of the way until I could get a replacement bracket. Figured the zippie tie broke and the e-brake was banging on the suspension. When I lifted the car, to my surprise, the control arm was cut in half. I would "like" to think it was the torque of the 3800 TPI lol, but I'm pretty sure the shocks are going and one good pot hole did the deed. Take a good look at the stock control arm diameter, that is how thick the stock exhaust is lol...
#204
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Originally Posted by Street Lethal
Well today was dedicated to the GTA...
#205
Re: Chronicles of a 9 Second Trans Am... Final Chapter
I took a video of the affect of the bad flywheel before pulling the engine earlier while it was still light out. Turn up your volume because ever since Lou's ZR1 took off that day, my i-Phone has not been the same sound recording wise lol. Got the engine idle down to 800-RPM in Park/Neutral and it is as tame as ever, not bad with this big of a cam, stock throttle body and small displacement engine. The chatter and chirping of the flexplate over power the exhaust note though, but she sounds good. Very happy with the tip in, but I couldn't blip the throttle because it would only enhance the chirping. Was giving a lot of resistance too as the metal on metal heated up, was holding the engine back causing a slight surge. But anyways, will have the bad flywheel off the engine tomorrow...
#206
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Just a quick update, the 2-Bar MAP sensor went bad, noticed the voltage reading very low at key on this morning, so I ordered a new one. For the time being I reinstalled the original 1-Bar MAP sensor and created a new tune based on that and the free flowing exhaust. Pulling the turbo made a huge difference. Wrestled with the engine all freaking day but it's finally back together, just need to put it back in. Have the back lifted because I'm going to weld an O2 bung for the wideband into the Y-Pipe collector as soon as I am done writing this. Exhaust came out pretty sweet, when the car is down you see only about half of the exhaust tips from behind. Gonna try to have a much better idle video up soon, as well as some around the town driving and prep for the blower...
#207
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Quick update before I leave the house, started working on a backup engine because I know the cast one in the car is eventually going to give up the ghost sooner or later. When that happens, hopefully after the goal is met, I will replace the short block with this one and just set boost to 10-psi, back off the timing a little, and just drive and enjoy it on the street. I have about five engines left just sitting in the garage, three of which I am not even sure what they are just yet, just pulled them from third gens and let them sit years back...
Anyways, I pulled another known 305 from the bunch and started to disassemble it. I love when I come across a 305 already bored .030 over, as the first thing I check for is a longer stroke, hoping the former owner went the 335 stroker route, but no such luck, stroke is 3.48". Pulled the timing cover and cam as well, didn't run the numbers on the cam, and didn't check to see for any GM stampings yet, but I'm sure it is nothing special. Still need to drain the oil, pull the pan and see what's under her skirt...
Cylinder number 4 concerns me, as the bore has two small grooves in it. My finger nail cannot pick it up nor get stuck in it whatsoever, which is good, but I can in fact feel it when I rub my finger over it. Might have to bore it .040 over if I do in fact use it, don't think I can get away with it in a boosted application. Naturally aspirated, possibly. Anyways, keep those fingers crossed as maybe the putz who owned this engine prior put a forged crank in it. Wishful thinking for an anemic 305, I know, but that's the fun part when rebuilding an unknown engine. Hope you guys and gals are enjoying your labor day weekend...
305 w/.030 pistons;
Stock stroke;
Cylinder number four;
Anyways, I pulled another known 305 from the bunch and started to disassemble it. I love when I come across a 305 already bored .030 over, as the first thing I check for is a longer stroke, hoping the former owner went the 335 stroker route, but no such luck, stroke is 3.48". Pulled the timing cover and cam as well, didn't run the numbers on the cam, and didn't check to see for any GM stampings yet, but I'm sure it is nothing special. Still need to drain the oil, pull the pan and see what's under her skirt...
Cylinder number 4 concerns me, as the bore has two small grooves in it. My finger nail cannot pick it up nor get stuck in it whatsoever, which is good, but I can in fact feel it when I rub my finger over it. Might have to bore it .040 over if I do in fact use it, don't think I can get away with it in a boosted application. Naturally aspirated, possibly. Anyways, keep those fingers crossed as maybe the putz who owned this engine prior put a forged crank in it. Wishful thinking for an anemic 305, I know, but that's the fun part when rebuilding an unknown engine. Hope you guys and gals are enjoying your labor day weekend...
305 w/.030 pistons;
Stock stroke;
Cylinder number four;
#209
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Re: Chronicles of a 9 Second Trans Am... Final Chapter
That deck is junk. I'd be shocked if it didn't leak water, where it previously leaked water.
I used to have a bunch of random stock motors in the shop too, but I've come to the realization that the time I have left is precious and I don't want to waste it with stuff that may or may not blow up. I really think you should have one machined properly, buy good internals, and enjoy a reliable combo.
The good news is, I made the scrap metal guy happy a few months ago.
-- Joe
I used to have a bunch of random stock motors in the shop too, but I've come to the realization that the time I have left is precious and I don't want to waste it with stuff that may or may not blow up. I really think you should have one machined properly, buy good internals, and enjoy a reliable combo.
The good news is, I made the scrap metal guy happy a few months ago.
-- Joe
#210
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Originally Posted by Orr89RocZ
I ran worse cylinders in my car, it will be ok. But may want to open up the ring gap or tune alittle richer...
Originally Posted by anesthes
That deck is junk. I'd be shocked if it didn't leak water, where it previously leaked water.
I used to have a bunch of random stock motors in the shop too, but I've come to the realization that the time I have left is precious and I don't want to waste it with stuff that may or may not blow up. I really think you should have one machined properly, buy good internals, and enjoy a reliable combo.
The good news is, I made the scrap metal guy happy a few months ago.
-- Joe
I used to have a bunch of random stock motors in the shop too, but I've come to the realization that the time I have left is precious and I don't want to waste it with stuff that may or may not blow up. I really think you should have one machined properly, buy good internals, and enjoy a reliable combo.
The good news is, I made the scrap metal guy happy a few months ago.
-- Joe
#211
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Re: Chronicles of a 9 Second Trans Am... Final Chapter
Yeah that doesnt sound good to have noises while turning over. Is there a clearance issue somewhere?
If you do rings just inspect everything to be sure. Dingle berry ball hone it and throw it back together. I did this on mine and worked great. I had scratches that needed .020 over to clean up but i said not yet.
Wrist pins are relatively cheap so if bad no worrys
If you do rings just inspect everything to be sure. Dingle berry ball hone it and throw it back together. I did this on mine and worked great. I had scratches that needed .020 over to clean up but i said not yet.
Wrist pins are relatively cheap so if bad no worrys
#212
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Re: Chronicles of a 9 Second Trans Am... Final Chapter
#213
Re: Chronicles of a 9 Second Trans Am... Final Chapter
This is the noise, a light thump after every ratchet turn. Hard to detect, but after the winding of the ratchet, and after the turning of the crank, you will hear that light thump at the end of the turn. Doesn't sound too major, but I want to get an idea before pulling the pan. Sounds like either a rod bearing, or wristpin, on one or multiple cylinders. I doubt the crank was spun by it over the years, but you never know...
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Re: Chronicles of a 9 Second Trans Am... Final Chapter
-- Joe
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Re: Chronicles of a 9 Second Trans Am... Final Chapter
This is the noise, a light thump after every ratchet turn. Hard to detect, but after the winding of the ratchet, and after the turning of the crank, you will hear that light thump at the end of the turn. Doesn't sound too major, but I want to get an idea before pulling the pan. Sounds like either a rod bearing, or wristpin, on one or multiple cylinders. I doubt the crank was spun by it over the years, but you never know...
-- Joe
#218
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Originally Posted by project89
those ugly dish pistons need to go lol
Originally Posted by anesthes
I'm exactly in the same boat. I was thinking of grading some land out back and spending 50k or so building a bigger shop, but now I'm thinking a brand new vette is probably a better purchase.
-- Joe
-- Joe
Originally Posted by anesthes
Sounds more like the piston rocking in the bore.
-- Joe
-- Joe
#219
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Re: Chronicles of a 9 Second Trans Am... Final Chapter
mind ur compression ratio with those flatops , not sure what heads ur using
#220
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Originally Posted by project89
mind ur compression ratio with those flatops , not sure what heads ur using
Cometic MLS give me a final compression ratio of around 9.0:1.
#221
Re: Chronicles of a 9 Second Trans Am... Final Chapter
No such luck on the splayed main caps lol. Stock bottom end. Cleaned off the old oil pan gasket residue, pulled the stock oil pump and trashed it, and that ridiculous Fram filter is coming off next. Oil pan isn't that bad, going to clean it up then hit it with some paint...
#222
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Originally Posted by Street Lethal
If that's it, just cold chatter prior to rings and pistons heating up, then I'm a happy camper.
#223
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Re: Chronicles of a 9 Second Trans Am... Final Chapter
Okay, so it is definitely not cold chatter. Had time to give it a quick rod bearing test, and for those who don't know how to do this, just bring each cylinder up to top dead center by hand, then keep turning until the piston starts to slightly make it's way back down the cylinder. What this does is allow the rod to rest on the bottom side of the crank bearing. At this point, push down on each cylinder with your fingers. If you feel the cylinder move down significantly along with a "thud" sound, then your connecting rod bearings are on their way out. Depending on just how much downward the piston moved along with how loud the "thud" is will give you an idea of just how bad the bearings are. Remember, bearings are supposed to wear down in time, its normal, but they need replacement just like every other friction oriented part. This is the noise you are hearing in the video I put up, as six out of the eight cylinders were making that noise during the rod bearing test...
Junk rings do the same thing though. Either way, pull the caps and check the bearings. It doesn't take long.
I built a motor for my Bayliner over the summer (that I didn't end up using because the JBweld on the old one hasn't failed, go figure) and I used an "Engine Tech" rebuild kit. Mains, rods, rings, cam bearings, freeze plugs, full gasket set, etc was like $120 if that.
-- Joe
#224
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Originally Posted by anesthes
Rob,
Junk rings do the same thing though. Either way, pull the caps and check the bearings. It doesn't take long.
I built a motor for my Bayliner over the summer (that I didn't end up using because the JBweld on the old one hasn't failed, go figure) and I used an "Engine Tech" rebuild kit. Mains, rods, rings, cam bearings, freeze plugs, full gasket set, etc was like $120 if that.
-- Joe
Junk rings do the same thing though. Either way, pull the caps and check the bearings. It doesn't take long.
I built a motor for my Bayliner over the summer (that I didn't end up using because the JBweld on the old one hasn't failed, go figure) and I used an "Engine Tech" rebuild kit. Mains, rods, rings, cam bearings, freeze plugs, full gasket set, etc was like $120 if that.
-- Joe
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Re: Chronicles of a 9 Second Trans Am... Final Chapter
I'm a pita w/noises Joe, I'm the type that pulls up to every stop light, lowers the radio, tells everyone to shut up lol and listens to the engine for noises, even in a newer car. Two of the pistons had no rod bearing play, but the other six had some. It would freaking drive me insane having to listen to that while cruising around, especially with the time invested in swapping everything from the MLS gaskets and up over lol. I have a set of Clevite rod bearings sitting in the garage, I was going to use them anyway. Just don't want to see a spun crank when I pull the rods, but from what I am hearing, I seriously doubt it. The hell with the mains, just doing rod bearings, freeze plugs and new high pressure oil pump...
-- Joe
#226
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Originally Posted by anesthes
How do the cam bearings look?
-- Joe
-- Joe
#227
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Re: Chronicles of a 9 Second Trans Am... Final Chapter
engine tech is good stuff , most of there kits consist of king engine bearings, clevite ,speedpro or kieth black and sealed power stuff
#228
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Re: Chronicles of a 9 Second Trans Am... Final Chapter
Okay, so it is definitely not cold chatter. Had time to give it a quick rod bearing test, and for those who don't know how to do this, just bring each cylinder up to top dead center by hand, then keep turning until the piston starts to slightly make it's way back down the cylinder. What this does is allow the rod to rest on the bottom side of the crank bearing. At this point, push down on each cylinder with your fingers. If you feel the cylinder move down significantly along with a "thud" sound, then your connecting rod bearings are on their way out. Depending on just how much downward the piston moved along with how loud the "thud" is will give you an idea of just how bad the bearings are. Remember, bearings are supposed to wear down in time, its normal, but they need replacement just like every other friction oriented part. This is the noise you are hearing in the video I put up, as six out of the eight cylinders were making that noise during the rod bearing test...
just did this on a 2.4L 4cyl motor i stole a head off of for that grand am #3 piston drops about 1/8th of an inch
#229
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Originally Posted by project89
just did this on a 2.4L 4cyl motor i stole a head off of for that grand am #3 piston drops about 1/8th of an inch
I might do the unthinkable with this 305 Dave lol, I might actually destroke it.
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Re: Chronicles of a 9 Second Trans Am... Final Chapter
one is the v6 grand am gt 3400 ( i actually just got the motor buttoned up on this one after pulling the heads to helicoil all the rocker studs holes)
the other is the grand prix 4cyl , soon as this car is done i have a trans swap to do on a 3400 v6 alero , and finally after that it looks like ill have a 3.8 to 3.8 supercharger swap
then hopefully back to work on the iroc
#231
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Originally Posted by project89
and finally after that it looks like ill have a 3.8 to 3.8 supercharger swap
then hopefully back to work on the iroc
then hopefully back to work on the iroc
Snapped timing chain gave me no choice, had to get it done before continuing with the GTA, and I wasn't going to waste my time installing another NA 3800. I might do something with the factory L27 though, a couple of new guides for the heads, new valves, forged bottom end, etc, and it will be a solid street engine. Block is okay believe it or not, so are the cylinders. Wow though haven't heard a noise like that in a long time, the moment it happened I knew I heard a rod. I was beating on that engine, I admit. Good thing about the L67 swap is the only change needed are the injectors and MAF (same PCM), which are coming with it. Factory shift points I'll live with...
#232
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Originally Posted by Street Lethal
... had to get it done before continuing with the GTA.
#233
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Okay, so the supercharger concept was scrapped, and I'm back to the turbo. The one I am going to use needs a rebuild, as after taking it apart over the weekend I found the shaft journal lightly scratched by the two bearing locations. So the bearings are out. I ordered a fresh rebuild kit, so it will get new bearings, thrust bearing, collar and seals. The shaft journal will be polished. Not sure why one of the thrust bearing retaining pins on the center section was pushed down, but I need to pull that back up as well. The exhaust side showed no signs of coked oil. It's a 72mm compressor wheel, .96 a/r on the exhaust side. Not going to bother with the RMT setup idea, just going back to the FMT setup I originally had, though I want to smooth down the welds on the system and have it coated. I might just spray it myself to save time. Gonna throw up that long tube header system for sale, so if anyone wants it locally hit me up. I paid $250.00 to the door, and I barely even used them, just a few idle vids. Going to put them up for $150.00 if anyone wants them...
#235
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Re: Chronicles of a 9 Second Trans Am... Final Chapter
Okay, so the supercharger concept was scrapped, and I'm back to the turbo. The one I am going to use needs a rebuild, as after taking it apart over the weekend I found the shaft journal lightly scratched by the two bearing locations. So the bearings are out. I ordered a fresh rebuild kit, so it will get new bearings, thrust bearing, collar and seals. The shaft journal will be polished. Not sure why one of the thrust bearing retaining pins on the center section was pushed down, but I need to pull that back up as well. The exhaust side showed no signs of coked oil. It's a 72mm compressor wheel, .96 a/r on the exhaust side. Not going to bother with the RMT setup idea, just going back to the FMT setup I originally had, though I want to smooth down the welds on the system and have it coated. I might just spray it myself to save time. Gonna throw up that long tube header system for sale, so if anyone wants it locally hit me up. I paid $250.00 to the door, and I barely even used them, just a few idle vids. Going to put them up for $150.00 if anyone wants them...
It would be nice to see a twin turbo thirdgen that didn't look like an abortion, had good plug access, and didn't melt anything within reach.
-- Joe
#237
Re: Chronicles of a 9 Second Trans Am... Final Chapter
I came to my senses. Seven grand for a head unit and bracket, not worth it.
It's an awesome idea, but it would take too much time. I hate welding cast iron, and I would have to finish the set I started awhile back, get cast iron T3 flanges with wastegate flanges in them because I sold the ones I bought previously, cut and weld everything, then run 2 to 2 1/4" downpipes into a dual y-pipe that I saved from SLP. It would work, but the single system is ready to go, just gonna rebuild the turbo and put it all back on...
It's long overdue. Although Dave and a few others didn't throw up dyno results or track times, so technically they are not done yet either lol. You and Steve are the only ones who threw up real results...
It's long overdue. Although Dave and a few others didn't throw up dyno results or track times, so technically they are not done yet either lol. You and Steve are the only ones who threw up real results...
#238
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Re: Chronicles of a 9 Second Trans Am... Final Chapter
Maybe it would be nicer to see a build actually get finished around here. ( No offense to you Street, just wanna see something get built.)
How long before you change your mind again anesthes???
#239
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Re: Chronicles of a 9 Second Trans Am... Final Chapter
Funny that you mention that, I was thinking maybe swap the SBC out for a 6.0 powerstroke in my Formula.
No not really.
-- Joe
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Re: Chronicles of a 9 Second Trans Am... Final Chapter
I like blowers i been in a few different kinds and especially love roots style/twin screen deals but unless you find a take off lsa blower, building an ls, it just isnt worth it
#241
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Re: Chronicles of a 9 Second Trans Am... Final Chapter
It's an awesome idea, but it would take too much time. I hate welding cast iron, and I would have to finish the set I started awhile back, get cast iron T3 flanges with wastegate flanges in them because I sold the ones I bought previously, cut and weld everything, then run 2 to 2 1/4" downpipes into a dual y-pipe that I saved from SLP. It would work, but the single system is ready to go, just gonna rebuild the turbo and put it all back on...
I would have loved to try a set of those STS manifolds but I couldn't find any, and the Banks manifolds were way big money.
I've seen them used on a thirdgen, and it's a really nice clean install.
I'm almost to the point where I'm content with the Formula build. I've surely made some mistakes along the way.
-- Joe
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Re: Chronicles of a 9 Second Trans Am... Final Chapter
Exactly, thats my biggest gripe with blowers in general. Too much money. Centri is half a turbo and turbos generally are less than 2 grand. The markup on the brackets and stuff just kill the idea for me.
I like blowers i been in a few different kinds and especially love roots style/twin screen deals but unless you find a take off lsa blower, building an ls, it just isnt worth it
I like blowers i been in a few different kinds and especially love roots style/twin screen deals but unless you find a take off lsa blower, building an ls, it just isnt worth it
I think I have maybe $100 in materials into my bracket. Still, my current Vortech setup cost more than my T76 build but to be fair it's not all Chinese either.
I don't get why the chinese don't start making centrifugal blowers.. I've only seen the procomp/speedmaster knock off S-trim, but then they got sued because the gearbox was a direct copy so they can't sell them any longer.
-- Joe
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Re: Chronicles of a 9 Second Trans Am... Final Chapter
mines not done just on hold till i can gather the funds to grab that ms stuff from joe , been a lil rough since i just took a 62% hit to my income , slowly cutting that percentage down though so hopefully ill be back upto 100% soon
#245
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: Chronicles of a 9 Second Trans Am... Final Chapter
i could still run my same setup even if i didnt push the radiator mount forward by 5 inches , and even so its something anyone with even the most basic of tools can do
#246
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: Chronicles of a 9 Second Trans Am... Final Chapter
#247
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Car: 91' Z28, 92' Z28
Engine: 383, L98 stock
Transmission: Built 700R4, Stock 700R4
Axle/Gears: 12 Bolt 3.73, 10 Bolt 3.23
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Last edited by zz17iroc; 09-19-2016 at 12:42 PM.
#248
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Charles I want this damn thing done more than anyone, I don't like being this far behind, it's ridiculous. zz17iroc, I didn't mean that in a negative way towards you, you definitely got yours done on schedule. Headers and Y-Pipe are off, waste of damn time. Good looking setup, but I shouldn't have done it. I share everything, I try to anyway. I said a page or two ago that my 2-Bar MAP sensor was reading horribly a short while after I pulled the turbo so I ordered a new one, slapped the 1-Bar MAP sensor on there for the time being, and the engine, although started and idled, didn't sound right to me after the header install. It ran, just seemed a tad off, thought nothing of it, figured it was in the tune somewhere that I hadn't looked at yet. Pulled the plugs first before removing the headers today, and bam, number one cylinder had detonated. Compression check showed me the rings are fine, read 150-psi with not much deviation between cylinders and held all around, very lucky. Good thing it didn't happen under boost, and good thing I noticed it in the EBL sensor diagnostic screen. The number one injector ohm'ed okay, checked it after the compression check. It was definitely the bad MAP sensor, was reading in the 2's at key on when it should have been high 4's, it must have just recently went bad when I noticed it. Anyways, headers are off, putting the turbo headers back on as I write this, still waiting for the turbo rebuild kit for the bearings and thrust bearing, shaft journal already smoothed and polished...
#249
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Car: 86' IROC
Engine: Supercharged 350
Transmission: T56
Axle/Gears: 3.45
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Holy smokes, I'd be stuffing a bore scope in that bad larry and taking a good look around if i were you.
#250
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Originally Posted by 86CamaroDan
Holy smokes, I'd be stuffing a bore scope in that bad larry and taking a good look around if i were you.