Originally Posted by
franktf
First thing first..... If you want to make say 750-800 rwhp with a turbo/turbos, there is no reason to build a motor that big..... You could easily make enough power to break the 69 block with a 357, this will solve any compression issues..... Also I would seriously consider 1 decent size turbo rather then 2 smaller ones, you can make big powa with one in the 80mm range..... Just look at Wendy's car, it has an 80mm/363 combo that currantly makes 750 on relatively low boost and there still tuning.....
I dont have John and Wendy's budget,..
So my turbo's will be 2 turbo's sourced from any Buick 3.8's I can find in the junk yards. I dont know of anything else with a single turbo that would be large enough that might end up in a salvage yard for my application. If I found something I wold certainly try to make it work with a single.
I'm hoping to be able to do the entire turbo set up (Not including the carb) for between $1000 - $1500. The most expensive parts will be the manifolds and intercooler. The piping and welding I will do myself.
Also I want to try to keep the motor on pump gas for the most part,.. so 10 - 12 PSI will be pretty much the main stay. I may try to reach 15 PSI on race gas and see where that takes the motor if the turbo's are capable of pushing that much boost. Thats my plan anyway. Always subject to change if I find out something wont work.
I havent purchased anything yet. I'm still trying to figure the build out first. I want to have a feasible build with a realistic goal. Hell,.. I know next to nothing about turbo's. Just started reading up on them about a week ago when I decided I wanted to try it. Talking with Shinyside a couple weeks ago got me thinking about it. I got to thinking about the costs involved with filling a nitrous bottle twice for a single day of racing,.. I decided that doing a cheap junkyard turbo setup would be a cheaper way to go. This entire build is going to take me well over a year to complete with my income. So I have time to read,.. take in opinions,.. and learn as much as I can before deciding on a final course of action to take.
I am definitely open to suggestions. I dont know Jack about Turbo's. I just figured that 2 x 3.8L = 7.6L and that would be my best bet to making it work. If I could do it with smaller turbo's like say 2 turbos from the 2.2 Chrysler cars I would try that,.. but 4.4L doesnt seem like it would be enough. Or am I completely off track with this kind of logic?
The more I'm reading the more I'm thinking the 392/393 will be the better way to go.
Hurst