10# of boost safe on10.9:1 engine??

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Mar 17, 2006 | 10:47 PM

sandro arellano

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10# of boost safe on10.9:1 engine??

just as the thread name says, is 10 pounds of boost safe on my 10.9:1 compression engine? has a forged bottom end and is making about 420 rwhp right now. 238/232 cam and 1.5 stage ported heads.

Mar 17, 2006 | 10:50 PM

brad8266

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I wouldnt do it. With the higher CR I would spray it.

Mar 17, 2006 | 10:52 PM

sandro arellano

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any reason why? dangerous for the motor? how about 7#

Mar 17, 2006 | 11:06 PM

calongo_SS

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High compression + boost = detonation = boom

Mar 17, 2006 | 11:07 PM

sandro arellano

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i understand that but i have seen stock motors, which are 10.1:1 running 10 lbs, what could i get away with?

Mar 17, 2006 | 11:09 PM

calongo_SS

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I honestly don't know, I'd guess 5-7 psi w/ a good tune. TTT for ya, maybe someone else will know.

Mar 17, 2006 | 11:10 PM

sandro arellano

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i will also be running the pisc ati kit with the twin intercoolers, dont know if this will help any...

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Mar 18, 2006 | 12:40 AM

sandro arellano

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so what do you think about 10 pounds on 91 octane?

Mar 18, 2006 | 12:41 AM

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sandro arellano

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oh and what the hell does TTT mean?> hehehe

Mar 18, 2006 | 12:47 AM

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sandro arellano

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my bottom end is forged for the power and survival of the pistons but would detenation be a big concern>>? or with a good tune is it doable?

Mar 18, 2006 | 12:47 AM

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sandro arellano

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what about 7 pounds? is this more fisable?

Mar 18, 2006 | 12:48 AM

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Nine Finger 02 Z28

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Quote:

Originally Posted by sandro arellano

so what do you think about 10 pounds on 91 octane?

I would say no.But not impossible would have a lot to do with how well it was tuned and how much total timing that you will be able to run.Also has alot to do with weather conditions because it will run hotter in the summer which would even make it even tougher.

Mar 18, 2006 | 12:50 AM

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sandro arellano

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7 pounds?? is this still in the danger zone?

Mar 18, 2006 | 12:50 AM

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sandro arellano

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really?? so if i end up getting the ati kit with twin intercoolers the 7 pounds should be ok???

Mar 18, 2006 | 12:51 AM

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Nine Finger 02 Z28

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Quote:

Originally Posted by sandro arellano

what about 7 pounds? is this more fisable?

Yes...

Mar 18, 2006 | 12:51 AM

#17

sandro arellano

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really?? so if i end up getting the ati kit with twin intercoolers the 7 pounds should be ok???

Mar 18, 2006 | 12:59 AM

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calongo_SS

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You should sell the heads you have, and get some stock or ported 6.0 L heads and then you wouldn't have to worry about it.

Mar 18, 2006 | 05:14 AM

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smokinHawk

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use a 110 octane you might get away with it
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Mar 18, 2006 | 05:32 AM

#20

EPP

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What is the cubic inch of your engine? If it is higher than a 346, you may not be able to get much more than 7 psi out of the P-1SC anyway, depending on the cam profile and cubic inch of your engine. You may also have the smaller 3.5" thick twin high flow intercoolers, which won't be as effective at cooler the compressed air as the newer 4.5" twin high flow intercoolers. You could also go with a large front mount intercooler, which would be less expensive than upgrading to the 4.5" twin high flow intercoolers, and will do a great job at keeping the air cool. Keeping the air cool is one of the keys to how much boost you're going to be able to run. Bob

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10# of boost safe on10.9:1 engine??

10# of boost safe on10.9:1 engine??

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