what compression ratio for more boost
curently running 17psi what would be a good compression ration if i wanted to up the boost to around 25psi and what make rod/pistons would be good i know weisco ones are top not but ideally want some a little more pleasing on the pocket
thanks |
1:1
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Originally Posted by madmalc
(Post 369857)
I'm currently running 17psi. What would be a good compression ratio[n] if I want[ed] to up the boost to around 25psi? What make rod/pistons would be good? I know Weisco's are top notch but, ideally I want some a little more pleasing on the pocket.
Thanks! |
Originally Posted by patsmx5
(Post 369865)
What's your setup? What turbo? What's the car used for? How much power are you looking to make? Is English your first language? Are you 17 and from California by chance?
no i'm not 17 nor am i from california i am a 22 year old mechanic from england im using a gt2876r ball bearing garret item it gets used as a daily driver and as a track toy my friends have skylines and evo's and i am on a quest for more power from what they call my hairdresses car it currently produces 277bhp from a 1600 and i dont want to up cc |
What the fuck mate? Why dont you learn how to use bloody periods and capitals you fucking wanker. Does this look like msn messenger to you?
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miataturbo.net :ne: msn messenger
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why don't you cock suckers go bitch somewhere else
madmalc it is really kind of a trade-off. The higher compression your pistons are the more power you will make off boost, but the less air you can cram in. Pistons with lower compression have less power off boost, but help you cram more air into the motor. |
Originally Posted by Saml01
(Post 369872)
What the fuck mate? Why dont you learn how to use bloody periods and capitals you fucking wanker. Does this look like msn messenger to you?
I asked quite a sensible question, which i had hoped i would get a sensible answer! Oh how wrong could i be! Quite right, how the question was written wasn't very well worded but it was easy enough to understand. Certainly looks welcoming to a newbie if this was the 1st post they read. |
Originally Posted by mazda/nissan
(Post 369877)
why don't you cock suckers go bitch somewhere else
madmalc it is really kind of a trade-off. The higher compression your pistons are the more power you will make off boost, but the less air you can cram in. Pistons with lower compression have less power off boost, but help you cram more air into the motor. |
Originally Posted by mazda/nissan
(Post 369877)
why don't you cock suckers go bitch somewhere else
madmalc it is really kind of a trade-off. The higher compression your pistons are the more power you will make off boost, but the less air you can cram in. Pistons with lower compression have less power off boost, but help you cram more air into the motor. To be totaly honest money isn't the issue here more the fact of what is good and well recomended |
not every thread needs to become a flame... simple typing errors aren't enough cause to deface a thread that could yield useful info even if the topic has been covered before imo.
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at miata.net they are more concerned with spelling and grammar than they are about compression ratios. so no, this is not miata.net
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Originally Posted by y8s
(Post 369898)
at miata.net they are more concerned with spelling and grammar than they are about compression ratios. so no, this is not miata.net
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Originally Posted by ThePass
(Post 369885)
not every thread needs to become a flame... simple typing errors aren't enough cause to deface a thread that could yield useful info even if the topic has been covered before imo.
madmalc- most here don't build setups to run 25 PSI, so real world info is tough to come by. Around 9:1 comp is usually what most run for big boost/big power turbo setups. Personally, I would recommend 8.5:1 or so unless you plan on swapping in a huge set of cams where you'll need the extra comp to get your effective compression ratio back up. hustler on the forum recently had very good results running 8.5:1 compression with a similarly sized turbo. Do a search for threads started by him and you'll find plenty of info on his setup and dyno graphs. |
possibly a little jelousy from patsmx5 and saml01 because i want to run 25psi of boost :(
any sensible answers would be great i know a bit lazy but i dont have time to trawl through all threads with 25psi in |
FWIW; I just bought these: BELFAB RACING PRODUCTS
And I think another forum member did too. I bought mine with 9.0:1 compression. They have other options. |
Originally Posted by y8s
(Post 369898)
at miata.net they are more concerned with spelling and grammar than they are about compression ratios. so no, this is not miata.net
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8.5:1 Supertech pistons.
Belfab rods. |
Originally Posted by patsmx5
(Post 369907)
You knew what I meant y8s.
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