Thicker headgasket?

[accordy2g]

If i get a thicker headgasket how much more psi can i run, im skeptical just about turning up the boost a bit just cause of a headgasket but many say it lowers your compression so you can run more boost. What would be an ideal psi increase?

[GSteg]

since compression is the form of making power, lowering the compression will lose power.
you lower the compression, you loose more power. but in the meantime when you run more boost, it just gains the loss power back up. so in the end, all you're doing is adding up power for the ones you lost when you lower the compression. also, the turbo has to work harder because it has to spin faster to create the boost you want. when you're off boost, the car lags because of the lost compression. having a higher compression makes spool up time even more quicker and gets you the power when the turbo is not in boost.

i say keep the compression the way it is.

[accordy2g]

ok now by lowering the compression you dont lose tons of HP so the difference in boostin more outweighs what you have lost by lowering compression. Ask 9seccivic to see what compression he has under his hood.

[candymanjl]

I know there's one company that makes a gasket that drops the compression down a lot. they had serveral guy running 20+ psi on an otherwise stock bottom end, only thier gasket. they were getting over 400 hp too.

I still think it's a matter of time till the stock bottom end goes, but you'll never get 400hp before breaking, without dropping the compression in some way.

______________
B16A Turbo CRX

[GSteg]

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by accordy2g:
ok now by lowering the compression you dont lose tons of HP so the difference in boostin more outweighs what you have lost by lowering compression. Ask 9seccivic to see what compression he has under his hood.[/quote]

10.5 CR

and your point of me asking is...?

by the way, can you point out to me where in the whole forum where i said lowering the compression loses tons of power? :confused: thanks :)

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[candymanjl]

he he, I'm pretty sure that 9seccivic doesn't run 35psi on that 10.5 CR with pump gas 93 octane though ;)

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B16A Turbo CRX

[GSteg]

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by candymanjl:
he he, I'm pretty sure that 9seccivic doesn't run 35psi on that 10.5 CR with pump gas 93 octane though ;)

[/quote]

he said he ran 30psi :D who the heck would wanna run that kind of setup with 93 octance? :confused: racing gas all the way :cool:

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[19civic99]

GSteg how old are you?
are you younger then paradox?

______________________________
1999 Civic DX Coupe

some mods... :)
B18C..hopefully soon....

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[Paradox]

yeah, he's 15 i think

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[JAYRACER18]

this jit (GSteg) dont shit of what hes talkin :mad: bout give me your address ill send you a couple of turbo and super street magizines FYI. your sayin that high compression is good for turbo right ??? and we no its good for all motor then what is low compression pistons for and why do you think everyone in NIRA that have turbo cars run low compression :confused:

'93 civic si hatch

[GSteg]

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by JAYRACER18:
this jit (GSteg) dont shit of what hes talkin :mad: bout give me your address ill send you a couple of turbo and super street magizines FYI. your sayin that high compression is good for turbo right ??? and we no its good for all motor then what is low compression pistons for and why do you think everyone in NIRA that have turbo cars run low compression :confused:

[/quote]

where in this thread that i said high compression is good for turbo? all i said was keep stock compression. 12.5:1 would be high, but i don't think anyone would ever want to do that. what do you consider low compression? :rolleyes:

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[This message was edited by GSteg on August 08, 2002 at 02:41 PM.]

[GSteg]

heres something interesting i found. "then what is low compression pistons for" question of yours is right down there....



"everyone says high CR's are bad for boost"

Thats because way back when jed-bob was trying to soup up his farmtruck he kept blowing it up trying to blow through his carb. So his "mekanik" said if he drops the compression ratio he wont have that problem. AND HE WAS RIGHT!!! Now with jed-bob's new 5:1 truck motor he can run 9 psi all day long on his 36 octane fuel and he gained 12hp from his turbo system.. WOOHOO!!!

Now lets get back to 2002....

You guys have SOOOOOOOooooo much technology within your reach its ridiculous. Anti-knock devices, programmable digital fuel injection and timing control, Turbo systems with intercoolers. At this point its almost possible to turbocharge a diesel engine and run it on 93octane. The engines that Honda produce for us have such efficient heads and combustion chambers, high compression and turbocharging is not that big of deal.. Its actually relative.. back in the 70's manufacturers were building low compression engines for their cars to run on the unleaded fuel to cut back on emissions and to increase the safety of the fuel(yea!!! no more lead!! ) They built engines with 8:1 and even 7:1 CR's and this was how they solved their "knocking" problems.

And again to 2002...

Honda, Toyota, Nissan, and many other sporty imports are raising the CR.. 10:1, 10.5:1 and even as high as 11:1!!! Go back and ask jed-bob's mekanik if you can do that on that "unleaded furl".. ARE YOU CRAZY?!?! NOWAY!!!!! TECHNOLOGY GENTLEMEN!!

Running a high CR turbocharge engine is a matter of tuning.. Can you daily drive a 11:1 motor turbocharged engine?? YES. can you run 40psi boost on it on 93? NO. but with a reasonable boost level and conservative tuning its very possible to have a solid RELIABLE daily driven high CR turbo car. Would you let your cheap ass dad drive it for a week?? I would hope not.. the car needs octane, he's not going to spend the extra $.25/ gallon for the good stuff.

so, If you have to share your car with dear ol dad, cant afford this wonderful technology we have available to us, or just really trust jed-bob's mekanik.. go build you a 5:1 motor. But if you want the most out of your car.. I mean a bad ass ride.. dont cheat yourself. And also realize there are limits. Dont expect a 13:1 motor with 10psi to last very long if you arent feeding it a healthy diet of 118octane.


now does that answer your question?

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[accordy2g]

Lets just drop it cause we both think we are right and we arent accomplishing anything!! How about this: when you get your car Gsteg you go high compression and run a lot of boost and prove us wrong!!

[GSteg]

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by accordy2g:
Lets just drop it cause we both think we are right and we arent accomplishing anything!! How about this: when you get your car Gsteg you go high compression and run a lot of boost and prove us wrong!![/quote]

its been an honor to argue with you guys:D i'll see you guys soon:)

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[This message was edited by GSteg on August 08, 2002 at 07:53 PM.]

[sohcmydohc]

^^^you guys are argue like family. :D

[midniteracer]

lowering compression gives you more room for error, but high compression will give you more power. i suggest everyone take a look at this:

http://www.hondalife.com/articles/turbochargerompression.htm

[GSteg]

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by midniteracer:
lowering compression gives you more room for error, but high compression will give you more power. i suggest everyone take a look at this:

<A HREF="http://www.hondalife.com/articles/turbochargerompression.htm[/quote]" TARGET=_blank>http://www.hondalife.com/articles/turbochargerompression.htm[/quote]</A>

exactly....if you don't know how to tune for jack, lower compression. if you blow your engine with 8psi, lowering the compression doesn't really solve the problem. hell, i built a car with a b20Z running 12psi and it ran fine. tuning=everything

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