If I do a custom kit and start off at like 8psi should I be safe? The engine is from Totaljdm.com and has roughly 55kmi on it. I want to know what limit can the bottom end handle as far as horsepower and along with the top end. Is it really necessary to do a rebuild if the engine has good compression and has no problems? I feel I'll be fine but some are skeptical becauase they hear turbocharged and flip out. I appreciate any help I can get.

 

7 or 8 psi is the highest i'd go on a factory motor. especially if you have a heavy foot

 

i usually hear 7 or 8 psi is a safe level for boost. just make sure you invest in some good tuning.

 

What size of turbo? Dont boost more then 5 until you get it tuned if you want to be really safe.

 

stay under 300whp. don't matter what psi

 

id say just rebuild it then you can throw allthe boost you want ...other wise i wouldnt go over 7 or 8psi

 

ive done 11 psi on a stock motor.. and the car was sold and still r unning till this day

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Del_Slowest &raquo;</TD></TR><TR><TD CLASS="quote">stay under 300whp. don't matter what psi</TD></TR></TABLE>
That is about right Just get a good EMS and tuner

 

i was running 10 lbs on daily driven jdm b16a with no problems. tuned with emanange with fairly conservative tuning but no detonation. amount of boost depends on tuning.

 

click and read


https://honda-tech.com/zerothread?id=728240

 

The amount of boost you can run safely on a stock motor depends on a TON of factors...

I'm not going to go into it completely but just a few things to consider...

- A bigger turbo will push more air at a cooler temperature (as long as it's operating in it's efficiency zone, see compressor map), so the amount of "safe" boost you can run depends partially on the turbo you chose...smaller turbos have to spin faster to obtain the same amount of boost which increases the temperature of the compressed air...

- "durability boils down to the control of heat in the engine/turbo system. Each aspect of the system in which heat plays a part is a candidate for the Achille's heel." - Corky Bell

- Tune, tune, tune...a correct air/fuel ratio at all points in the operating range is one of the most important aspects of a good turbo system.

- Think in terms of horsepower, not boost...many people have doubled their torque on a stock engine! (with a good tune and turbo set up)

- According to Maximum Boost, 7-12 psi is a practical upper limit for stock engines (running high octane pump gas) at sea-level elevations...(psi could be increased safely if you are at a higher elevation with less than 14.7psi of air pressure.)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EJ1 wilcox &raquo;</TD></TR><TR><TD CLASS="quote">The amount of boost you can run safely on a stock motor depends on a TON of factors...

I'm not going to go into it completely but just a few things to consider...

- A bigger turbo will push more air at a cooler temperature (as long as it's operating in it's efficiency zone, see compressor map), so the amount of "safe" boost you can run depends partially on the turbo you chose...smaller turbos have to spin faster to obtain the same amount of boost which increases the temperature of the compressed air...

- "durability boils down to the control of heat in the engine/turbo system. Each aspect of the system in which heat plays a part is a candidate for the Achille's heel." - Corky Bell

- Tune, tune, tune...a correct air/fuel ratio at all points in the operating range is one of the most important aspects of a good turbo system.

- Think in terms of horsepower, not boost...many people have doubled their torque on a stock engine! (with a good tune and turbo set up)

- According to Maximum Boost, 7-12 psi is a practical upper limit for stock engines (running high octane pump gas) at sea-level elevations...(psi could be increased safely if you are at a higher elevation with less than 14.7psi of air pressure.)

</TD></TR></TABLE>