I have seen several guys on the board with turbo's. Did you make them your self, or have them made for you? If you did make them, how! And if you bought them, how much?

 

I've got the log-style Gale Banks cast iron manifolds. I think they were selling for around $600-$800 a pair. They are out of production and AFAIK, not available anywhere. Get a set of stainless tubular headers. They're much better performance wise.

Andris

 

Thanks, i will look in to that.. I took a peek in the engine bay last night, how in the world are you running twins? There looks like there just MIGHT be enough room on the drivers side. For those of you running two, did you have to take out all of the emissions stuff and AC? How hard was it to fabricate the y-pipe? Who has some pics?!

Also, where would i find out what kind of turbo for a 305? I don't want crazy HP, just enough to really make a difference.

Thanks

 

hey, go to ubb.mfba.org and look in the "for sale section." look for a post by Dan Jachera. he is selling spearco twin turbo manifolds made for a third gen. he wants $500

 

<IMG SRC="http://www.eecs.tufts.edu/~askulte/ttt/engine_installed.jpg"">

This is how

I removed the AC and AIR, and had to relocate the alternator to the drivers side top and lower the ps pump. To size turbos, please spend the time to read Corky Bell's "Maximum Boost" and it'll explain it all (basically figure out how much airflow at what rpms, and pick a good turbo map to suit)

A.

[This message has been edited by askulte (edited February 09, 2001).]

 

how much did it cost you to put the twin turbos in I was interested in doing it.
thanks
bryan

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86 Irocz, 305 bored 40 over, 211/221 comp cam,paw rocker arms 1.5,10:1 comp., stock heads, 100 shot of nitrous,

soon to be airflow research 190 cc heads, 373 gears to replace 273, and induction work

 

I'm using a set of headers for an S10 with a v8 conversion, turned upside down and with some cutting and welding.

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"American made baby. 100% American iron. The muscle among the masses. My hero. Yep, you can take your ergonomically designed, space age, computer controlled, 4 door, cup holding map lighted split double wishbone split fold down retractable cargo covered moon roof piece of transportation and keep it. For I have felt the thunder. And I know the difference!"
JSP Motorsports
ICON Motorsports

 

Cost is all relative since I did most of the work myself. Figure on $3k-$7k, not counting engine work, depending on how much of a cutting edge setup ya want. I've got a pretty comprehensive website on the project - follow the link in the sig to Z28tt.

BTW - If ya'll are interested, maybe we should put together a FAQ for the power adders forum? Many of these questions have been asked before, and can be found in the archives...

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Andris Skulte
Skulte Performance Designs
Z28tt-89 IROC T56 DFI Twin Turbo
http://www.skulte.com

 

i had to remove the AC and all the smog stuff. here are some pics when the engine was almost done:

https://www.thirdgen.org/messgboard/...ML/000179.html

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Jeff
99 T/A WS6 A4, RKSport lid & free EGR mod
88 GTA twin turbo 358, forged crank, forged H-beam rods, Wiseco reverse dome pistons, Dart Sportsman II 72cc heads, Comp Cams custom grind blower cam (.560/.586 lift, 232/236 duration), 1.6 roller rockers, TPIS mini ram intake manifold w/ Accel 58mm TB, 83 lb injectors, Accel DFI computer with variable injector controller, 2 Garrett T04B "hair dryers" with dual Garrett wastegates, TH400 tranny with BTE transbrake and Art Carr custom converter, F*rd 9 inch rear w/ 3.50 gears, and more...

 

Andris, thanks for the book referance, i will pick it up. It would be great if there was a basic FAQ about this.

What are you lot using to attach the intake pipe to the TB? I see that the TT guys are using metal pipe, is anyone using rubber or plasic pipe?

 

i dont think rubber or plastic pipe would hold up to the the extra pressure of boost, that is why soft rubber tubing is used at a minimal amount

 

I'm making a "required reading" page right now, with the best books about turbocharging and engine design, along with my comments about them. It'll kinda be a mini-faq on how to get started building a turbocharged setup.

As for the rubber connections, I used a piece of 4" rubber hose (pretty heavy stuff) from Home Depot to secure the metal intake pipe to the throttlebody. For low boost it shouldn't be a problem. Try to minimize the number of connections in the setup, since everyone has a chance to fail and you'll have a more reliable setup with less connections. The nitrile silicone lasts much better under high temps, and is reinforced so it wont stretch under big boost. For under 10 psi, you should be fine with the 1/4" thick home depot stuff. Trial and error is cheap if you use Home Depot

A.