new turbo arrived and of course gota take pics with a 2L bottle of soda for size





now that i have one , i think it needs a twin

 

Someone needs a workbench for christmas.

So you are doing twin t76's now?

-- Joe

 

I used to run the .81 exh housing.....I felt it was too small and at that time souldve bought the .96 housing. I ended up selling that and going with the cs racing gt 45 model with the 1.15 housing.

 

lol i have tons of workbenches , all of them just had stuff on them

single t76 as a test , if i like the single setup more then the twins ill get an t88 or a bw s475 with the upgraded wheel,or possibly the gt45 witht he 80/88 mm wheel . or ill just go back to twins and put the 66's on it. twin t76s would be a lil much for my combo


yeah i was torn on the .81 housing but i can always pick up a different housing pretty cheap if need be, this is just a test run for me anyway

 

I have a .96 a/r housing on my T76. I think it's a little small for my build, when you consider the amount of air my motor uses n/a it kinda puts me off the efficiency island.

Oh well. It's paid for.

-- Joe

 

new passenger side header just have to get the collector stright and weld it

not the best but for making them soley out of an old set of longtubes they cam eout just fine

 

Nice! Is that the set you were thinking of selling ?

What's the pooch's name ?

-- Joe

 

yeah thats the other set i was thinking of selling and still may , so i can build yet another set so i can push the collectors back 2 inches

i have a single tube to finish on the driverside to clear the steering shaft ill get that done today, and should have time to start building the xover for the 76
the goal today is to complete the hotside minus the downpipe as my downpipe flange got back ordered on me

might be a lil rough though as i had a wheel bearing go out on my 4wd explorer yesterday so i need to get that in the shop and apart and see how much damage there is on that and get that fixed as well


the dog isnt mine or my friends was one sof his cusotmers dogs dont know his name

also i fixed what i thought was an ignition issue with ms yesterday, aparently i had the tpsdot threshhold to low and it was triggering ae , so pulse wisths were going from 1.2ms at idle to 4.5 for a split second and when i was cruising around at 2-3k rpm and it would trigger ae pulsewidths would more then dbl causing a very quick way rich condition.

i actually shot a video of it in the shop while it was fixing itill have to post that later , i do belive i still have a lil bit of ignition breakup when i post the video i think u will be able to hear it when i hold the engine between 2-3k rpm steady it sounds like a real slight breakup, but i also need to pull the plugs and make sure they arent fuel fouled or anything


also i gota send ya pm here later today should have the money for that transbrake/vb bellhousing etc in 3-4 more days

 

I've got all the parts to do mine now, I'm just a little uneasy about the merge. I built a jig last week to hold the T4 flange where I want it. First thing I think I'm going to do is weld up a bracket for the flange so it's not held just by the tubing.

Again, I'm not sure how to do the merge. I'm using the 2" weld els. Not sure if I should just rob a y-pipe from the shop. I think I have one from a 4th gen 3800.

Interesting. I wouldn't have thought to check that. Your using ms2extra, right?

When I pulled my header off, and checked a few plugs they had BLACK BLACK soot. I mean it looked like chimney sweeper black. Which is odd, cuz my wideband always reported between 13-14:1, which I'm assuming means I had some exhaust leaks pulling in fresh air..

I just went to 60lbs siemens injectors and and a new FPR, so hopefully once the new hotside is done I'll get fuel dialed in properly.

Sounds good. Do you want the case ? If so I'll mount the VB on it and get a box at staples.

-- Joe

 

yeah deffinatly want the case as well , will save me a ton of time modifying the stock th350 case i have.
running ms1 extra right now , way back when i first installed the ms i thought the ms2 cpu went bad cause of fueling issues i was having so i bought and swapped in an ms1 cpu, turns out the base settings for peak and hold injectors are not correct for precision injectors and thats all it was, one of these days ill switch it back to ms2/extra if i dont just spring for the ms3 cpu and ms3x board

 

when u figure out placement ill show u a few tricks to building a good flowing merge

 

Once I'm done doing the family Christmas tour all over New England this week I'll get back in the shop and post pix to my thread.

That TH350 case has some other mods too, I think forced oiling and some of the cavities are bored out with a dremel or something, I'm guessing for fluid release. I dunno.

Just make sure you measure the case to bell clearance with your pump. If for some reason your pump is a hair more shallow you don't want the bell housing being held up on the case or it will leak. Your supposed to torque it down and run a feeler guage around the whole thing.

-- Joe

 

will do

 

This build is awesome it just needs more pictures

 

the only thing im going to say is FIRE FIRE FIRE
will investigate in the morning

 

not sure if it was actually a fire or what.
Now that im watching the video, we looked over the car once we pushed it into the shop and couldnt find anything burnt , but there was smoke pouring out from the hood and into the car

 

Maybe an oil leak burning on something hot?

-- Joe

 

This is why my first couple drives were without a hood.

Sure looked like oil on the headers, but hard to tell.

 

wasnt oil , the entire passenger side bank of injectors is stuck open , either the ground wire shorted somewere or i have other issues .

the smoke was aparently either fuel vapor from the hot header being filled with gasoline or something not really sure . im on lunch break now , but heading back to work on the car in about an hour im going to pull the harness and sheck for burns or shorts

 

Interesting. Keep us posted.

-- Joe

 

joe im going to need ur help figuring this one out if i rember right ur an electronics guy

#1
heres what i have found , if the ms is powered off and i kill the 12v power to the relays and prime the fuel system fuel presure holds with a very slow bleed down , 30 mins form 45 psi to 0 , my cheap regulator bleeds down

#2 prime the fuel system and turn both the ms and injector 12V + on at the same time presure holds and bleeds down the same as #1

heres were it gets funky
#3 prime fuel system and leave ms powered off , but flip on power to the injectors and instand presure bleed form 45 ps to 0

this tells me the ms that either the ms leaves the injector circut grounded when power is off or that something is wrong and its back feeding ground threw the injector drivers

my ms is powered out of the fuse panel on an unused circut that is hot in run and crank . for saftey i have both my injector and coil power off a 40amp relay on my arc-4000 switch panel

ideas suggestions? btw im using ms1 v3.0 with the latest ms/extra code


in other news i started mocking up the new headers today , but with it being 15* out i didnt get much done

im going to shorten up the passenger side by about 1.5 inches so its just behind the alt, and have to modify one primary for 4.5 inch downpipe clearance.The driver side is right were i want it.
im also getting the itch to exchange this t76 for one with a .61 housing and then buy a matching t76 with the .61 housing and put twins on it and make use of the direct port nitrous system i have





oh yeah and this is a must lol i really need to get back to work on my turbo dirtbike project

 

injectors should be fused switched power on during crank and run. ms is grounding the injectors when it is in the off position. when you flip power on to the injectors you are simply turning them on 100% as long as the ms is off.

 

i dont believe the ms should be grounding those circuits when off, will need to dbl check that. its also no big deal to move the ms power to my switch panel and put it on the same relay as the injectors

 

Correct!

From the manual: "You must use a "main relay' that supplies both the injectors and your MegaSquirt® controller, as shown in the external wiring diagram above. When your MegaSquirt® controller shuts down, the injector driver states are 'indeterminate' and might allow current to flow through the injectors. Thus the injectors might stay open and flood the engine if the MegaSquirt® controller isn't powered but the injectors are powered."

So yes, it's quite common to be grounded upon power off.

In stock form, the injectors would be powered through a circuit that is only hot during CRANK and RUN. Just turn the relay on when under those conditions and you should be good to go.

Don't have heat in the shop?

I was supposed to pick up a load of hay today and then spend the day in the shop, but it's raining. So I guess I'll spend the day in the shop.

Intercooled? Just too much plumbing for me.

I have not been on a dirt bike since my early twenties. I have a bagger, but it's not so good in the dirt haha

-- Joe

 

My MS is powered through a switch, but its also switched power so either the switch, ignition being turned off, or both shuts the MS down. My injectors are wired as they originally were stock, so they still work as stock, ecm switches the ground. The extra switch is a theft deterrent.

Therefore I shut the key off, both MS and injectors shut down.

So even if the injectors are grounded, key off provides no power to the injectors.

 

joe the coal fired furnace was acting up made for a really cold day

anyways looks like i got some rewiring to do , funny thing is it just started doing this

 

Check to make sure you arent getting a short somewhere Dave. That could do it.

 

hacked up the headers i built again and turned them into a pair of theese , they were originally a set of long tubes that i cut up and hacked back together to make turbo headers, then i hacked them up again to make this design.

these will be temp till my new stainless flanges and tubing get here so i can weld up a nice pretty set


and no the flange isnt bow'ed the camera i have has a 135* lens so the pictures get that fishbowl effect

 

How close to the hood is that going to be ?

I've seen some stainless sets on ebay that are basically run the same way. I'm still on the fence about running a crossover in the front between the fans and engine. Not a lot of room for such a hot pipe.

-- Joe

 

not even close collector is at valve cover hieght , ill grab some pics on the car today , though i goofed on the driver side the header ust clears the prop valve so i need to refit it and move the tubes 1/2 inch closer to the head

 

Cool. So this is still for the single?

Last night I stumbled into harbor freight and with some coupons managed to pick up the $299 blasting cabinet for $160 so I think I'll set that up this weekend, blast my manifolds and paint 'em. See how they turn out.

-- Joe

 

yeah doing a single with them but putting vbands right on the collectors so i can always go back to twins if i want

 

I agree. The under-engine crossover is the only way I will go.

Next set will be a real turbo header on the drivers side, and a log on the passenger side with the same crossover. The log will more than handle my lower power goals.

 

You going with the vbands with the step in them I hope? Vbands are a MF if they arent perfect on the pressure side. I hate ever choosing them. Next setup is getting ball and socket hands down.

 

yeah the bands i ordered have th m/f steps in them hoping it all gets here by friday

 

so ive decided i really miss the lope and idle of the old supercharger cam , the cam in it now is really suited to a ported/aftermarket runner tpi build not the heads/hsr intake i have now

im thinking im going to go ahead and grab a
adv 303/303 @.050 234/234 .488/.488 114 lsa
or since i need to buy a new converter for the th350 anyways
adv 303/313 @.050 234/244 .487/.507 114 lsa

either cam will take be more suited to the heads and intake that are on this engine.
the second cam might be a lil much with the small housing on the 76 , but i dont need max power on the 76 , when i buy my 88mm i can size the hotside accordingly

 

Oh Boy

I'm running a NX276HR cam and it's about as big as I want on this. Not a fan of lope.

-- Joe

 

we should start adding phases or chapters to this build. lol

 

lol maybe, street lethal knows me , i cant leave nothing alone, i cant even tell u how many changes i made to the turbo v6 car before i was happy with it.

and now that winter is here and im making the twin to single change + the trans change i cant help but changing so other things

the engine has to come out of the car anyway, ive got an oil pan leak, i used one of those nice one piece gaskets and when i put it on it didnt feel right but it looked like it sealed up.. well its leaking around the gasket , and im not fighting trying to pull the pan off in the car. so cam swap is just a lil more work

 

I've had $20k in parts, 3 transmissions, two sets of heads, two intakes, a procharger, a turbo, and a few other alterations in my car since 2012. The only thing I don't do with it is drive it.

-- Joe

 

lol im hoping i finish all the changes by spring time so i can drive the wheels off this thing when the weather gets nice

 

this is all i acomplished today besides playing on the 4wheelers and dirtbikes in the snow on the farm todat

 

Joe....that's the same cam I run.....seems to do pretty well since its not a huge lift cam.

 

looking forward to more pics of this build as well.....my car is off to paint and then I will work on fine tuning the megasquirt and see if I can get rid of the pesky no start when I have a certain 2 wired connected.....then again I might just leave the timing locked out....

 

i gota take some pictures , got a package of parts today , the most expsensive lil package ever lmfao

2x 2.5 interlocking vband assemblies , and a 3inchn vband assembly , and 2x 50ftx2 inch black header wrap and an extra box clamps for it


all my new tubing was supposed to be here today but columbia river ****ed up my shipping adress so hpefully that will be here tommoroow

 

im picking up that 234/234 as soon as i pick up the rest of the trans parts i need from joe

 

You switched to a GT45 ? Hows that working for ya? We'll have to catch up some time.


What's the weather like in Utah? Negative temps here today. Horses are freezing, dog doesn't even want to go outside. I hate new england.

-- Joe

 

^^^^^Why I moved to Florida, lol.

 

-4* a few days ago , been warming up a lil bit , have to make my biweekly 120 mile grocery shopping trip today , but ill be back to work on the car tommorow
hopefully my order form columbia river mandrel bends shows up today

 

120 miles to get groceries ? What are you in a 1870 moorman outpost?

-- Joe