I'm just trying to verify something real quick....
Would there be any problems by running the stock PCM for a little bit after swapping from the stock 3.1 LG5 to a built 3.2 with slightly more compression, custom internals, a forced induction oriented cam, o-ringed blocked, etc. etc. We may need to move the car while were waiting for a new PCM to arrive so we can do the 2nd half of the motor swap.... If not we'll just have to get big and strong and be pushing....I don't want to put any risk on destroying a fresh motor on something stupid....
I wouldn't start it. Your chip isn't setup for those mods and you may damage something. Just push it.
Quote from: redturbo90I wouldn't start it. Your chip isn't setup for those mods and you may damage something. Just push it.
You have been reading Jeff M too much. These mods have been done on lots of TGP's.
z284pwr
I have about the same configutation and it purrrrrs and runs like a bat out of hell. The computer dosent even know the motor was changed. The only noticable change was gas milage and 10-11" vacuume :lol: Biggest cam I have run is 284* with 112@ LSA. Any lower LSA and you may have idle issues.
Just watch your boost and knock retard very carefully. Runs best with the TG chip.
What computer are you going to run.? Iassume it's aftermarket.
Let us know how it runs.
Jud
I ran a similar setup in mine without a tuned chip, and it ran fine. I now have a custom chip, but it was more or less so I could cnotrol the variables.
You should be fine on the stock chip till you get 1 tuned for your motor, but I am wondering why you raised compression rather then lower it so you can pull more timing out of it and add more boost without pinging?
-Jeff
Alright, thanks for all info guys.....I should mention that the motor is already broken in so I don't have THAT part of the problem that I was worrying about. That being, the motor runs ~16HGin of vacuum at idle actually, its not that big of a cam, but bigger than most off-the shelf kind, it is a custom grind Crower cam, it holds EGTS very well to keep the turbo spooled which will be nice... It appears I will be just getting a TopGun 160 chip for it, and may venture into custom programming for it, I'm not going with an EMS, I have an '88 Beretta with the motor in it right now running Haltech E6K *The engine was originally intended for this car but the turbo went bad, so were going a different route* The Haltech is fun to play with, it just doesn't run as nice as factory and running it during the winter kinda sucks....so I'll stick with GM ECUs and just tune those instead....
Quote from: gp90seYou should be fine on the stock chip till you get 1 tuned for your motor, but I am wondering why you raised compression rather then lower it so you can pull more timing out of it and add more boost without pinging?
-Jeff
Anyways, the motor was professionaly built by a close friend, and he has a guy that he built a 12:1 compression motor PLUS boost. Higher Compression is a lot easier for street driving N/A then the cam drops static compression down to 8.8:1. I'm not out to push the highest boost possible through the thing, so raising it a bit didn't mean anything to me.
thanks again for all the info guys :)
If anyone is interested, here is the build sheet for the motor....
http://home.earthlink.net/~z284pwr/beretta/engine.jpg