rb20 measurements

Discuss the RB20, RB25 and RB26 series engines.
jdmser
Posts: 716
Joined: Thu Oct 09, 2003 1:31 am
Car: duh

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I've been taking measurements of my rb20 so I can fill out JE's custom piston form and would like the knowledgable to take a look and see if my numbers look right. I know that they can't be the same as everyboby else but, I want to know if they look close to spec.

Deck Height: 7.490"Valve DiameterIn: 30mm Ex: 27mmCombustion Chamber Volume: 52ccCompression Height: 1.2765"Deck Clearance: 0.057" Does anyboby know what the cc of dome of the stock rb20 pistons are?
Modified by jdmser at 1:49 AM 5/22/2008


jdmser
Posts: 716
Joined: Thu Oct 09, 2003 1:31 am
Car: duh

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Come on. I'm the first one to build a rb20?

mott6904
Posts: 679
Joined: Tue Jan 30, 2007 2:50 pm
Car: rb20 big turbo big cams s13, 97 kouki, turbo audi a4,turbo busa

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no your probally the first one to try ordering custom pistions when it should be done by someone that knows what they are doing.

jdmser
Posts: 716
Joined: Thu Oct 09, 2003 1:31 am
Car: duh

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mott6904 wrote:no your probally the first one to try ordering custom pistions when it should be done by someone that knows what they are doing.
I guess you have a vast knowledge of my experience and training to feel comfortable enough to make that statement.

mott6904
Posts: 679
Joined: Tue Jan 30, 2007 2:50 pm
Car: rb20 big turbo big cams s13, 97 kouki, turbo audi a4,turbo busa

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I dont know what your experience level and i dont think it matters. If i was having custom pistons made i would let the person making the pistons take all of the measurements since it is such a critcal part of an engine. Plus if it gets f**ked up then they are to blame and have to fix.

jdmser
Posts: 716
Joined: Thu Oct 09, 2003 1:31 am
Car: duh

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That would require nothing short of shipping the long block out to JE. For some reason I can't see them wanting that. Not to mention the added cost.

onepuff
Posts: 234
Joined: Thu Dec 21, 2006 9:16 pm

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check the australian forums. skylinesdownunder.com skylinesaustralia.com

probably find an answer there


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