well ok so is it true that u can take a secong gen turbo II manifold and have it bored out to fit on a first gen 12a. like everyone else it seems i was thinking about turboing my 12a, it has less than 10k on it and has very good compression and i thought it would be a good time in the next 10k to put it on but the one thing that i cant seem to find. i mean i can find the turbo hat and then its just doing the oil return lines and piping and a couple other things, like the exhaust piping and the bov flang and what not. so any help on this would be usefull.

 

It's possible, but probably just easier to get a custom manifold made. You can then position the turbo where you need it to be.

Unless you're going to run less than about 7psi of boost, you don't want to turbocharge a n/a 12a.. far better to pull it down and put lower compression turbo rotors in it, it'll last a lot longer and you can run higher boost. Why not consider fuel injection? You'll have something a lot easier to tune for minimal cost, and something more able to cope with the varying fuel demands of a turbo engine.

 

what? first off plenty of 12a turbo guys here have proven you can run 15 psi with no problems. EVEN WITHOUT INTERCOOLERS, and second using the stock 13b manifold bored out is easy.. you just need a little spacer, 3rd, fuel injection being cheap? not likely. he can get his stock carb modified for a hell of a lot less and be done with it. thanks

-zac

 

well ok so this is what im thinkin. i will try to find a 13b manifold and get it bored out, right?, and then i got a buddy that will do the oil lines and some welding work. so i would prolly have him help me with some of the exhaust work and the placement of the bov and stuff. then after i knew i got all that it would be a new carb and the turbo hat, and the various fuel lines and what not to that. and then the intercooler and piping. after i hadit all i would fit it on and then prolly end up putting in a new fuel pump. does that sound good to those who really know? and then about 1500-2000 later there would be my turboed 12a with less then 10k on the engine and ready to push about 6-10 psi

 

that's about the jist of it. you WILL need a high flow fuel pump. i use the msd pump.

 

Well you have the idea, now spend the money. I have done most of my turbo project between my parking spot and the shed in the back yard. Trusty little stick welder did the exhaust from the turbo back. You need to decide what carb you are going to use. If you use the nikki you can keep the build under a $1000 from what I have read on here.


dont forget the rising rate fuel pressure regulator..

 

Go out and purchase "Maximum Boost" the turbo bible.
ISBN 0-8376-0160-6
This book is a must if you are new to boost and need a clear and concise answer to your turbo needs.
Your oil, water and BOV answers are in their along with tips from the forum on rotary specific's.
Good luck.