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Old 01-20-2012, 09:58 PM   #1
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Default turbo and high compression

I wanted know your thoughts on running high compression on my boosted single cam on 15lb?
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Old 01-20-2012, 10:29 PM   #2
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Default Re: turbo and high compression

How high compreession we talking?
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Old 01-20-2012, 10:40 PM   #3
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Default Re: turbo and high compression

yea depends on how high?
the highes i've seen was 10:1 on 10IBS.
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Old 01-20-2012, 10:41 PM   #4
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Default Re: turbo and high compression

its like the higher you go the lower you can boost.
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Old 01-20-2012, 11:00 PM   #5
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Default Re: turbo and high compression

That's way too much boost for high compressin, you would need the worlds best tune, E85 and methanol injection,
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Old 01-20-2012, 11:19 PM   #6
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Default Re: turbo and high compression

check it out youtube.
not sure what it is but i think it was an S2k.
and there is a sohc vtec at 10:1 boosting 16IBS, prob. on race gas.
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Old 01-21-2012, 04:09 AM   #7
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Default Re: turbo and high compression

just do it
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Old 01-21-2012, 05:10 AM   #8
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Default Re: turbo and high compression

I was thinking 10:1 cause thats the highest I herd and it dont really matter how much pounds of boost I run I just wanna make the most 350hp.
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Old 01-21-2012, 05:12 AM   #9
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Default Re: turbo and high compression

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That's way too much boost for high compressin, you would need the worlds best tune, E85 and methanol injection,
Im trying to do it on pump gas sooo of thats the only way I could then forget it ill go low comp
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Old 01-21-2012, 05:17 AM   #10
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Default Re: turbo and high compression

I'm doing 7 psi on 10.4 b16
Stock
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i think cylinder one might have a bad valve or something because it dosent get as hot as it should like the rest of the cylinders
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Old 01-21-2012, 05:20 AM   #11
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Default Re: turbo and high compression

Search user mar778c, he made the power you want and more on pump gas and 11.8:1 compression.
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Old 01-21-2012, 05:21 AM   #12
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Default Re: turbo and high compression

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Originally Posted by dk=gsr View Post
check it out youtube.
not sure what it is but i think it was an S2k.
and there is a sohc vtec at 10:1 boosting 16IBS, prob. on race gas.
can't find that vid think you could get the name?
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Old 01-21-2012, 06:10 AM   #13
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Default Re: turbo and high compression

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Originally Posted by DELshaneSOL View Post
I'm doing 7 psi on 10.4 b16
Stock
I herd its easy for a dually to do that though
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Old 01-21-2012, 06:11 AM   #14
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Default Re: turbo and high compression

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Originally Posted by 00Red_SiR View Post
Search user mar778c, he made the power you want and more on pump gas and 11.8:1 compression.
Ight cool thanx
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Old 01-21-2012, 06:15 AM   #15
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Default Re: turbo and high compression

9.5:1-10:1 compression is fine for boost and 93-94 pump gas if you have a good tune
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Old 01-21-2012, 07:15 AM   #16
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Default Re: turbo and high compression

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9.5:1-10:1 compression is fine for boost and 93-94 pump gas if you have a good tune
Ok thanx.how much boost do you think?
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Old 01-21-2012, 07:36 AM   #17
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Default Re: turbo and high compression

i made 425 on 15lbs on 11.0.1 comp on 93 pump gas
b series tho
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Old 01-21-2012, 08:24 AM   #18
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Default Re: turbo and high compression

The compression does not change how much power you block can handle. You'll really be fine with even 11:1 as long as you don't over power the components
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Old 01-21-2012, 10:53 AM   #19
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Default Re: turbo and high compression

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Originally Posted by marvel1988 View Post
Im trying to do it on pump gas sooo of thats the only way I could then forget it ill go low comp
10.0:1 is fine, I thought you were talking about like 12/13:1 comp ratio.

Look into methanol injection though. You can make it yourself with windsheild washer fluid and Kleen (or other products).

I would start out at 10-12psi (depending on the turbo), with a good tune.
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Old 01-21-2012, 10:56 AM   #20
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Default Re: turbo and high compression

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I herd its easy for a dually to do that though
Lol you don't want to run high psi with high compression because of pre-ignition/detonation, diesels run off of pre-ignition.
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Old 01-21-2012, 11:09 AM   #21
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Default Re: turbo and high compression

And yet no one here talks about boost pressure with a particular turbocharger? What good is giving your brother's-sister's-cousin's-former-roomate's boost pressure without the specific turbocharger mentioned, nor the setup or use needed?

It all depends on what you use.....

the next person that starts listing boost pressure and no other information on their setup, I'm comin' through the screen and throwin' 'em a beatin'!!
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Old 01-21-2012, 11:19 AM   #22
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Default Re: turbo and high compression

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Originally Posted by TheShodan View Post
And yet no one here talks about boost pressure with a particular turbocharger? What good is giving your brother's-sister's-cousin's-former-roomate's boost pressure without the specific turbocharger mentioned, nor the setup or use needed?

It all depends on what you use.....

the next person that starts listing boost pressure and no other information on their setup, I'm comin' through the screen and throwin' 'em a beatin'!!
15lbs on a ebay turbo and 15lbs on a gt42r are not the same thing.....people need to understand this...
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Old 01-21-2012, 11:22 AM   #23
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Default Re: turbo and high compression

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Originally Posted by TheShodan View Post
And yet no one here talks about boost pressure with a particular turbocharger? What good is giving your brother's-sister's-cousin's-former-roomate's boost pressure without the specific turbocharger mentioned, nor the setup or use needed?

It all depends on what you use.....

the next person that starts listing boost pressure and no other information on their setup, I'm comin' through the screen and throwin' 'em a beatin'!!
I mentioned it, two posts above yours, I put "10-12psi (depending on the turbo)"
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Old 01-21-2012, 12:06 PM   #24
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Default Re: turbo and high compression

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Originally Posted by DirtyDA9 View Post
I mentioned it, two posts above yours, I put "10-12psi (depending on the turbo)"
You're still stating a general BOOST PRESSURE LEVEL, without giving a mention to what size CFM airflow rate. You can't start at 10-12 of anything without knowing what the hell he's got. You can't assume that people know there's a proper RANGE of airflow rates that you can even give that 10-12 psi for.. You have to be more specific if you're going to advise anyone what they should or shouldn't use. Otherwise, its just like throwing out.. "GT30R" and not saying anything else, like many of the others do on here.

Be specific, (or at least reasonably specific about your statement), or at the very least say "from what I've experienced", or say nothing..
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Old 01-21-2012, 12:47 PM   #25
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Default Re: turbo and high compression

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Originally Posted by 94 ls teg View Post
i made 425 on 15lbs on 11.0.1 comp on 93 pump gas
b series tho
Ok but will out be the same for a single
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