hello friends, its been a while since my last post, i have boosted ld9 down here in panama city, and i recently changed my turbo for a big 16g ported. i already have low comp forged pistons, piston rings and forged rods.

i would like to know what will be the max boost that my ld9 can hold i was before boosting 10, now i would like to go 16

besides the above named i also have:

450 injectors from an evo
afpr
255 wally pump
iridium sparks
msd conversion
safc (working) cuz i know that there are some that have to use something else

i havent touch my head, so it is practically stock , that is why im asking because what im worried about is my head

thanks

Firstly I'd be getting rid of the safc and getting it hp tuned. The safc is pretty much useless on our cars.

The tune alone will dictate how much power you can make before blowing it up.

With that turbo you should have no issues but a real tune will make it possible.

Philly D wrote:Firstly I'd be getting rid of the safc and getting it hp tuned. The safc is pretty much useless on our cars.

The tune alone will dictate how much power you can make before blowing it up.

With that turbo you should have no issues but a real tune will make it possible.

96' is an odd year. He could very well have a speed density pcm, for which the safc is designed to work for.




I have no signiture

it is speed density, thanks for the advices

Gah...didnt check his profile...

The rest of what I said stands still...

If the tune is god your engine should be able to handle that amount of boost on the turbo just fine.

The only thing I see that will probably pose a problem is the injectors. I suspect you'll be pushing those 450s pretty hard, and without a way to see injector duty cycle (such as with tuning software, oscilloscope, etc.), I don't know how you plan to tune the fuel safely. Injectors don't like to be ran much past 80-85% duty.

I don't foresee the head being a problem at those levels on stock cams, though.




I have no signiture

saying how much boost it will take is impossible to gauge. what one turbo puts out for pressure at 5 psi could be the same amount another puts out at 25 psi.

seeing as how there are three (brandon fetter, scott lafngas and the marks' brothers) builds here on jbo that have pretty much ur same exact setup internally have put down over 500whp on decently sized turbos for years and years id say you're probably going to be safe to whatever your goals are.

you could probably turn that 16g to 30 pounds and ur LD9 would laugh at it.



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