TPITuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
Welcome to ThirdGen.org!
Welcome to ThirdGen.org.
You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join the ThirdGen.org community today!
pics of the turbo and manifold moked up on the motor. i have to make an adaptor plate to raise and turn the turbo to were the downyube port faces back, otherwise the intake port hits the runners. anyway, here is a pic of a mock up on my 355.
looks pretty good, where is the manifold from? if i did get the manifold i would be able to bolt it up to a different turbo or at least some more piping so that it would fit better right? thanks for the pics. oh and was the $150 including the turbo?
yea the 150 was everything. in order to fit the turbo on this type of manifold, you would have to have an adapterplate made to change the direction of the intake induction port of the turbo. i think the manifold is a banks manifold, and the turbo is a rotomaster. ( the equivilant of a garrett 44 turbo) it is oil cooled, needs an external waistgait, and also needs an external waist gait housing made. i also plan on running a blow off valve, and an msd master controller for the ignition. the ignition system alone will cost at least a grand, and the custom stuff (downtube, waistgate/plate, blowoff valve, will cost another grand or so) and thats not including the cost of my 355. of course that high cost is because i like to overkill everything, so someone could buy all the appropiate parts not including the turbo or manifolde for 1200-1500 easy. but that would be the cheapest parts that you would need to run it.
right now i am in the works of getting an lt1 intake so i might not have the clearance problems that i have with the ti (ie, the runners) so i might not have to run a spacer in between the turbo and the manifold.
all in all, turbos are better than superchargers, which = more cost to build. i look to have more than 15 grand in my car by the end of the year,if expenses permit.
i also am a full time auto tech student going for the 4 year degree, and an auto electronics tech, so i also am buying a but load of tools, and i pay for all of it. i have bought all of my cars and still have every one i have owned, and best yet i am only 19. so i figure i am doing really good for how young i am, and the way i see it, there might be some bad times, but for the most part it can only get better.
im not sure if it would be better than a superram or mini ram, but it should be about the same as or in between the two of them. i know it is a hell of a hole better then the stock tpi. you might whant to ask or do a search to see of anyone has talked about this topic lately, because i havent browsed this board for a while.
You guys still running MAF on those turbo cars?
Don't worry about dreaming. I'm also 20 and I've been doing it ever since I was 16 when I got my '86. Now I have a forged 383, new 6 speed, and built 4thgen rear. That's not counting my T/A that I drive everyday, which has a new Vortec 350 and 700-R4, completely built by me, including machine work. We all do it, why do you think were here? Dreaming is how we get where we want to be sometimes. And I work and go to school too. Paid in full by me! I hate people who stereotype me because of my age.
Sounds good, the only thing I'd reconsider are the PM rods, I've worked as a mechanic for Chevy at a local dealership for awhile, and they don't like more than 400HP or alot of revs, although they'll take it up to 500 HP. my 383 is actually a new HT383 roller crate motor I blueprinted, and I replaced the studded PM rods with 4340 rods, to match the crank. I've seen many techs use core motors to build their own, then toss a rod. Now we just use the PM rods for mild/stock applications. Just be careful
that was one cost i forgot to mention, i am wnating to convert to sd (speed denisity) also, which is not all that hard or expensive. it is not nessisary to convert to sd on a low boost setup (ie under 8) but does require a mod chip to handle the new air flow. i have seen that there is a compnay making a buffer box that allows the stock tpi comp to use a 4th gen maf sensore, which can handle and infininte amount of air flow. with that system a mod chip is also requierd. either way, it will work, but on a high boost setup sd or 4th gen maf setups are required, other wise the motor will run lean at high rpm's or even stall.
DH iroc : i already decided to go with the forged scat rods, theyre not much more expensive and they should be good for the power.
@zzkker : as for the MAF im planning on keeping it because granted i do run boost it wont be more than 8psi and im happy with the MAF setup, if anything i might goto the 4th gen MAF if i can find this box you speak of.
the last i knew of the buffer box, was that it still was in the development stages and at that time would cost around $250-$400,plus cost of maf, but that was about 4 months ago. i have not looked into it since because of saving to buy the t56 which i just worked out a deal for and just made a deal for an lt1 intake also. i think I first heard of the buffer at the iroc zone message board in the prom programmer board. you might want to look there.
I heard running a turbo setup on these engines will make an *** out of you on the road, just waiting for turbo to spool up and when it finally does, hold on cause you'll just about lose control of the damn car. I heard supercharges are the way to go.
Is this true about turbos on these cars?
turbo lag is only noticable on small liter motors. i am running a medium sized turbo, with both banks of exuast running through it. there should be minimal or no lag pressent, especially with the lti intake,that is going to be ported and polished. i am alo going to run a 52 mm tb, and modify my manifolds so they will be the closest to headers you can get with manifolds. even with bigger turbos, there will be minimal lag on a sbc because of the amount of mods done to be able to handdle the bigger boost pressure, so all in all, the lag you feel in a mitsu gsx, 3000gt/stealth, starion/conquest, turbo escorts, grand nationals, mk3 supras ect, would be minimal in a mod sbc made to handle the turbos.
