got a 1995 ls teg with 170k on it, runs great, burns not an ounce of oil, clutch never slips, this summer i am going to be buying a new b18b and building it, but was wondering if it would be safe to boost my current motor on say 3-5 psi?

 

focus on a power level. hp breaks stuff not psi. 250-300whp would be safe on that engine.

 

I agree with snoopy, but why don't you focus on buying the b18b and building that for boost! By not boosting the current motor and focusing on your project you can build the b18b faster and have a great running back up that you can keep just incase anything happens to your built motor or you can sell it later on just to have extra cash on hand!!!

 

I would say mybe 5 to 7 or nothing on a 170,000 mile motor. On your built up ls motor I'd say at least 15lbs should be safe. I'd save the turbo for a newer built motor.

 

bah i have an ls turbo thats been turboed for 2years and it had 190k on it when i turbed it. and i ran at the track last weekend on 13-15 psi. daily runs 10psi. and i daily drive it.

 

Woohoo, that's good to hear! My 2000 LS has 85K on it and I'm going to be running 10psi very soon.

 

oh one thing i have that i recomend is arp rod bolts.

 

How necessary are the rod bolts? I will be fine on < 10psi with stock internals, yes? That's what I keep hearing.

 

i'd worry about getting arp bolts if you wanted to rev higher

 

Please read below.


With a larger turbo, 9 psi could put 375 hp down.
With a smaller turbo, 20 psi could put 280 hp down.

PSI is irrelevant, it only tells you the pressure buildup in your intake manifold. You must take into consideration the actual amount of air flowing (CFM).