jun stage 3/compression ratio ?'s...............................

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Apr 24, 2003 | 09:37 PM

mkhooaah

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From: Janesville, WI, U.S.A

jun stage 3/compression ratio ?'s...............................

I have a b18c5 and have jun stage 3's ready to go in(have complete valvetrain upgraded). People are telling me that jun stage 3's do not work well with the stock CR of the motor. Is this true and if so, what kind of CR works best or would I be better off just getting different cams?

thanks alot

Apr 24, 2003 | 10:10 PM

crazyitr

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From: Houston, TX, USA

You need 12:1 to 12.5:1. That's what the Jun crate motors run

May 13, 2003 | 12:02 PM

shadyCTR

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From: nj, nj, USA

Re: (crazyitr)

it will be a dog at low end! but it will pick up at top!

May 13, 2003 | 12:16 PM

WAFFLES

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From: Tulsa, OK

Re: (shadyCTR)

blah blah blah...you will do just fine with a stock bottom end. Obviously, more compression is better, but you will be fine. Consider a Mugen headgasket.

May 16, 2003 | 11:09 AM

Scotty B

Joined: Jan 2003

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From: Tustin Ranch, Killa Cali, us

Re: jun stage 3/compression ratio ?'s............................... (mkhooaah)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mkhooaah »</TD></TR><TR><TD CLASS="quote"> I have a b18c5 and have jun stage 3's ready to go in(have complete valvetrain upgraded). People are telling me that jun stage 3's do not work well with the stock CR of the motor. Is this true and if so, what kind of CR works best or would I be better off just getting different cams?

thanks alot

</TD></TR></TABLE>

jun 3"s love compression......they absolutley rip with high cr. espesially up top!!!!i run them with ctr pistons and it goes.(i am pretty sure my comp. is 12.1.1 , but some say 10.8.1.......but it sounds and feels to good to be that low. just wait a little longer and do the bottom end. Im me if you got any questions!

May 23, 2003 | 09:15 PM

advanracing62

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From: Boise, ID

Re: jun stage 3/compression ratio ?'s............................... (nasi)

I'm planning on running 13:1 compression with JUN III head.. I'm hoping that she'll be a good combo, as long as it clays out.

May 23, 2003 | 11:21 PM

sgT

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From: WI

Re: jun stage 3/compression ratio ?'s............................... (nasi)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nasi »</TD></TR><TR><TD CLASS="quote">

jun 3"s love compression......they absolutley rip with high cr. espesially up top!!!!i run them with ctr pistons and it goes.(i am pretty sure my comp. is 12.1.1 , but some say 10.8.1.......but it sounds and feels to good to be that low. just wait a little longer and do the bottom end. Im me if you got any questions!</TD></TR></TABLE>

Unless you have a b16B motor then your compression is well over 12:1.