89JYturbo

Getting this project back into gear.

1) Blouch Turbo in Lebanon PA custom built my turbochargers. They recently developed a lighter weight turbine wheel that is 38% lighter than the stock GTX wheel. The difference is shocking when you hold each wheel in your hand. They also used ceramic ball bearings in the center section and their own extended tip billet compressor wheels.

2) I began fabrication of the cold side plumbing. Note that I still have the mock up turbos on the car for fabrication, I plan to wait until I have everything fabbed up to install the real turbos.

Jay_rich

iTrader: (4)

My god! Looks awesome. I cant wait to see this complete and running. How much money do you need to make it mine? LOL

Jay

Orr89RocZ

iTrader: (20)

Fantastic work so far! Love this car

Any other current pics of the car itself?

89JYturbo

Just took these today. I'm not a very talented photographer.

zz17iroc

iTrader: (4)

Very nice build my friend!

3rdgencamaros

Who needs photography when you can fabricate like that????!?

89JYturbo

More progress. I took three days off work to dedicate to this project. Doesn't seem like I got that much done- maybe I spent too much time playing fetch with Thor?! I'm glad to have the front end and interior back together and ECU wiring finalized and cleaned up.

Jay_rich

iTrader: (4)

looks great! interested to see how you like the ms3pro. i was debating it for my project.


Jay

cheesehomer

iTrader: (2)

NICE RIDE and Twin turbo build, very clean pipe work. I was wondering what make, size and offset the rims where, also what size is the rear tire ?.
Thanks

89JYturbo

I really like the MSpro up to this point, but I have a lot of features not enabled yet. The only problem I had so far (really unrelated to the MSpro) was my ignition input had to be reversed from what the manual says for 24X LS motors. They tell you to set the 'ignition input capture' to falling edge, I had to set it to rising edge to get an RPM signal. I may have wired my CKP sensor with incorrect polarity, but its been working perfectly so far with just switching the input capture (I still want to double check that the timing stays stable at high RPM). The only other thing I wouldn't mind is more input capability for data-logging.

So far so good, but ask me again in 6 months or so!

89JYturbo

I copied the external appearance of my car from a member on here, CrazyHawaiian (paint color and wheels/tires).

These are the specs he gave that I copied:
Front Wheel Boyd Coddington "Tuned" 18x8 w/ 4.5" Backspacing
Front Tire Bridgestone Potenza S-03 Pole Position 245/40/yr18
Rear Wheel Boyd Coddington "Tuned" 18x9.5 w/ 5.5" Backspacing
Rear Tire Bridgestone Potenza S-03 Pole Position 275/40/yr18

If I had it to do again, I would have gotten slightly less BS on the front wheels, or kept the same backspace and got 8.5" wide front wheels. I feel like the front wheels could stick out a little further to be flush with the top of the fender.

Orr89RocZ

iTrader: (20)

Congrats on winning cotm lol

89JYturbo

Just a little progress this weekend. Buttoned up a few loose ends and finalized the intercooler install. This is my version of a "flow-tie" grill. I'm undecided whether or not to polished the I/C end tanks. That can wait until after its boosted anyway.

PS, I'll say it here too, Thanks Orr89 for nominating my car for COTM. For those that don't know he nominated my car to compete against his for COTM. I would have voted for his personally, since that car is faster than mine will probably ever be. That and mine is still a work in progress. I'm hoping to see positive manifold pressure later this month though.

Jay_rich

iTrader: (4)

Looking amazing man! Such a clean car. You're making me wanna start over lol

Jay

89JYturbo

Okay, still not boosted but I can at least run WOT now (up to this point I couldn't really open it up because the original fuel pump couldn't keep after, even NA).

It took some doing, but I got dual 255 walbros in the stock tank. I'm still running a single 5/16" return line so I can't run both pumps at the same time yet or fuel pressure goes too high (fuel pressure goes from 60psi up to 70-75psi when engaging the second pump at WOT and 3k RPM). No big deal, I'll just set up the Mega-squirt to turn the second pump on at higher rpm/load. I'm data-logging fuel pressure, so it should be easy to get a nice transition to the second pump coming in, just got to figure out what RPM and boost pressure to engage it at.

The car is not very fast as it is NA. I have mock-up turbos on the car now with empty turbine housings. Out of curiosity I checked the backpressure and I seen 8psi before my tester hose popped off. My real turbos will have a .82a/r vs. these mock-ups with a .63a/r. I was hoping it would feel faster NA, but I guess running the exhaust through the empty turbines will prevent that.

Also cleaned up and painted all the exhaust work.

Orr89RocZ

iTrader: (20)

Yeah those turbines will kill the na performance somewhat. Dont be discouraged lol

IROCgiraffe

iTrader: (3)

Sub'd

weberflorida

iTrader: (2)

Love you build brother.

vortec350s10

Wow, that IS a clean car! I love the turbos both on the same side. Very cool and different. I'm running a MS3 on mine and love it. The data logging is pretty sweet. I can't wait to see more progress and hear more! Keep up the good work!

BTW mine is also a complete turd N/A, so yeah, don't be discouraged. A little boost is sure to put a big smile on your face!

89JYturbo

Thanks for the comments. My goal was to produce positive manifold pressure this month, and I worked hard to make it happen. I got burned out a little bit and things were not going to get done the way I wanted if I kept pushing ahead too hard. I didn't work on it this weekend, but my current goal is to see boost 6/13.

89JYturbo

Okay, I got the turbos spinning! I'm only running 6psi to start. It runs decent, but I found the open waste gate dumps are just way too loud and obnoxious. Sounds like an old farm truck when I'm up on boost. I'm going to add a separate muffler for them since I can't easily tie them in to the down-pipes. I wonder if they would sound better at higher boost?

Video of a walk around:
https://www.youtube.com/watch?v=gzu5...ature=youtu.be

Orr89RocZ

iTrader: (20)

From what i hear of open dumps is its always a monotone sound of exhaust pressure venting. I dont think they sound good lol but a mini bullet type muffler will help tone it.

89JYturbo

It just sounds like all of a sudden there is this huge exhaust leak. I guess that's what it is LOL. I also think just bringing the two dump tubes together into one larger pipe would sound a lot better.

Jay_rich

iTrader: (4)

Looks amazing, the amount of money I would spend to have that car lol. You even got video proof of it running before me lol, guess you win hahaha. Cant wait to see some footage of it rolling out!

Grats!

Jay

34blazer

That's really nice. On a side note, I really wish I could have seen the old turbo cav in action. I though that was a badass car too.

89JYturbo

I still have it, and it will be getting more attention after the Camaro is done (or I get it to a stopping point, it may never be done!).

89JYturbo

Its not so obnoxious now (added a muffler to the wastegate dumps). Now I can't even hear when the wastegates open up. I thought for sure I'd still hear it, but they are completely silent (which is okay by me, I'd much rather hear the turbos).

Jay_rich

iTrader: (4)

Nice! Debating doing the same thing. my car is super sleeper until it see's boost then the entire town can hear my car lol. Lots of fields out where i am and the sound carries pretty good lol

Mines been going good. finally got my afr dialed in, pulling the trans tonight for that noise which i think is flywheel bolts, what a pain!

Jay

Jay_rich

iTrader: (4)

Any new updates on this? Im still debating that proflo and doing anything it takes to shut the stock hood. been doing lots of measuring and it will be tight. Debating the LS2 version since the TB area is shorter

Jay

89JYturbo

Nothing much. I had an IAC valve issue, took out the stepper motor chip in the MS3-Pro ECU. I sent it to DIYautotune, they fixed it up but then USPS squashed it on the way back to me! DIYautotune sent me a new PS3-Pro at no charge, and I just haven't had time to get it back in yet. I probably this weekend.

The pro-flo required slight mods to my hood (had to trim the underhood bracing from the area above the TB flange). I think earlier in this thread there are pics, if you can't find them, feel free to PM me and I'll see that you get them. My engine is lowered about 1/2" from the stock location. I'm not sure it would fit to well using the commonly available motor mount adapters.

customblackbird

iTrader: (15)

Sweet build man! Im going to be doing the 5.3 truck twin turbo setup soon. Im actually still debating on running true dual 3" (I currently have) or going to a large single setup like yours. What is the dia of the catback? 4'? how does it look from the side of the car at right height? Did you fab the catback yourself? Looks like maybe three 4" U bends would put it together and add a muffler of choice.

Im only asking bc plumbing a 3" turbo down pipe on the driver side is not going to be fun with Forward up turbo headers. So maybe building a 4" system would be better.

89JYturbo

Thanks. Yes, I made the exhaust system myself. It is dual 3" into a single 4" out the back. I don't have any pictures showing the ground clearance, but it is pretty good, I'd say better than a lot of aftermarket bolt-on upgrades.

And yes, a 3" downpipe on the driver side will be tough, that's one of the reasons I decided on going a single turbo route art first which led into the twin asymmetric set-up I have now.

customblackbird

iTrader: (15)

How loud is it? Ive heard the 4" systems are pretty loud! How does it sound? Still like a V8 or a different tone that due to the single exit?

I couldn't also find info if a single 3.5" vs 4" would be better... I should be putting out 8-10psi and 550-650 fwhp unless i want more. My injectors and trans are rated to 800hp.

It honestly looks like a couple of 4" 90 degree bends... I like that it has the exit on the driver side as I have my holley dominator external twin pump on the pass side with my sumped tank. But I've heard that the smaller twins spool quicker than a larger single turbo. But it also reduces how many BOVs, oil feed lines, drains etc I need to have.

customblackbird

iTrader: (15)

WEll that and my turbo headers already have 3" Vbands on them. So I would have to run dual 3" to the turbo and then 4" down and out.

Orr89RocZ

iTrader: (20)

Turbo cars arent that loud

89JYturbo

Yes, my car is very quiet. I had external waste gate dumps that were obnoxiously loud, so I have a second muffler for them dumping just ahead of the LF wheel (see pic). I shouldn't be plugged up on the exhaust side any time soon!

I have never run a single large turbo on a V8, but my turbos spool extremely fast and I also have very low exhaust back pressure ahead of the turbines (drive pressure). I am measuring less than 1.25:1 drive pressure to boost pressure at 6000rpm. Below 5000rpm boost is higher than the drive pressure. I don't think you could get the same response AND low drive pressure with a single.

customblackbird

iTrader: (15)

Also do you happen to know what size bends you used? 10" or 12" legs on the 90s? Just pricing out what it would cost to fab my own.

89JYturbo

No, I don't know what I used for bends. I think I used several different ones. I do know I would only use aluminized piping if I did it again, I tried to save money and used some pipe that was bare steel and it rusted pretty bad before I could get paint on it.

I might also consider making the back half of my exhaust in aluminum, that much 4" piping gets heavy.

junkcltr

iTrader: (1)

Well, that is interesting.

customblackbird

iTrader: (15)

Yea I only used aluminized if i go steel. I think the aluminum exhaust isn't a great idea. cooling of the exhaust gases will reduce velocity and flow. The single 4" has got to be lighter than my dual 3" lol.

Orr89RocZ

iTrader: (20)

Yes dual 3" is typically heavier than a single 4".
Using alumium for post turbine exhaust is smart, just use steel for the first foot or two if you can
Else a lean tune could melt it down

89JYturbo

Yes, here are the numbers I got from a pull I did in third gear, going WOT at 2500RPM:

RPM------Boost(psi)----Drive Pressure(psi)
2500-----0.9------------2.2
3000-----6.9------------6.2
3500----10.3-----------7.9
4000----11.2-----------9.3
4500----11.8----------11.2
5000----12.2----------12.8
5850----12.8----------15.4

My local turbo shop, Blouch Turbo, developed this light-weight and free flowing turbine wheel, and is one of the main reasons I went twin instead of single turbo.

Orr89RocZ

iTrader: (20)

I gotta measure mine someday. Hows yours setup to measure it?

89JYturbo

I have 1/8npt bungs welded in my up pipes, then use and adapter from that to 3/16 brake line. A 3ft length of brake line tubing goes to a GM oil pressure sensor (from an LS engine, 0-5v analog output). This sensor is then wired as an input to the megasquirt pro and can be datalogged. I used a hand operated vac/pressure pump to calibrate the sensor so that the pressure/voltage relationship can be set in the megasquirt software. Once I had everything set-up, I used the hand pump to make sure the pressure readings were accurate up to 20psi.

89JYturbo

I finally got this car running like it should. It hasn't quite felt right since I got it together. I found the cam was retarded 3 degrees from the cam card, and I decided to advance the cam 6 degrees (ICL of 109, 3 degrees advanced from the cam card). I think the recommended ICL of 112 would have worked great with an auto trans, but where I have it seems best for a stick. The datalog screen shot below ought to explain the smile I have on my face right now.

Almost instant tire spin in third gear with only 12psi boost and 15 degrees of timing. You'll see on the datalog that the point where the tires broke loose was at 60mph, with only 3250rpm and 9psi of boost.

Badass355ciz28

iTrader: (17)

Coincidence.....had I looked here first I could've saw how you did your fuel setup lol nice job

89JYturbo

Updated engine bay shot. I painted the compressor covers and polished the compressor inlet pipes. Should be worth an additional 37hp or so.

I hope to find out next weekend, I'm planning to take it to the sloppy mechanics dyno day if the weather is decent.

Jay_rich

iTrader: (4)

So good!

Jay_rich

iTrader: (4)

How did you route the heater lines? I would assume with the turbo placement the water pump is blocked off? I said i was going to hook mine up this summer...well not its like 40 degrees in the morning so I never drive it lol

Jay

89JYturbo

I have the heater hoses come off the water pump, down to the right of the radiator, and then up over the RF inner fender. I don't have a pic of the hoses coming off at the engine, but the one below shows the routing in the RF and the after-run coolant pump I installed inline. The after run coolant pump keeps coolant circulating after the engine is shut off to cool it down faster and to help the keep the turbo bearings cool (they get the hottest after the engine is shut off). Most OE turbo cars use the after-run coolant pumps.