Ben's R32 Gtst Build

[zebra]

Na 10:1 comp short motor

With a cleaned up det head

[DJRIFT]

close.

[zebra]

Am I right about the bottom end? Pm as to not give it away

[TiTAN]

if someone can work it out ill give them a prize.

a few hints.

old vs new graph. both e85 same turbo. same inlet.

less boost than last time.

just a wrecker bottom end, havn't broken the genuine nissan seal

this post says its a standard bottom end, pistons in the previous pictures of the bottom end look fairly standard and arent dome tops as i would expect in a high comp bottom end build.

no signs of a VCT mod that i can see (your "b-cam" was discussed before)

pictures of the head look to me like it has had a reasonable whack of meat taken off the bottom of it. if the car is running corn juice or race fuel only im thinking even higher than 10:1 11-12?

if thats not it at the moment im not sure what else it could be to give that big of a change

[sav man]

Looks like i'm going to put a bigger oil pump on. The head sounds like a box of hammers again, seems the restictor is too small for a hydro head. I've been told more oil pressure should fix it

Edited November 24, 2011 by sav man

[Roy]

You are all wrong. Us loyal to the RB20 know that if you have problems with the RB20 in your car....and you chose to replace it with another wrecker RB20....the Nissan gods ensure that the motor you get from a wrecker for $400 is special and will outperform the original engine. Its a proven formula. You stay loyal to the RB20....then there is an engine in a wrecker waiting for a new dad and the opportunity to give its all for its faithful owner.

[DJRIFT]

this post says its a standard bottom end, pistons in the previous pictures of the bottom end look fairly standard and arent dome tops as i would expect in a high comp bottom end build.

no signs of a VCT mod that i can see (your "b-cam" was discussed before)

pictures of the head look to me like it has had a reasonable whack of meat taken off the bottom of it. if the car is running corn juice or race fuel only im thinking even higher than 10:1 11-12?

if thats not it at the moment im not sure what else it could be to give that big of a change

ha you did you home work.

we initaly asumed that the rb20de with a comp ratio of 10.2:1 was all in the bottom end. but its all in the head. the pic of the head has had no major machining just a quick plane.

one of the local circuit guys has just had a det head machined to the equivilent to bens, while it has been readdembled it hasent been ran yet. so there seems to be no problems shaving a bit of the heads.

[zebra]

So its a DET bottom end with a DE head

are the factory cams any different between the two?

[TiTAN]

extra compression ftw.

my engine runs 9.3:1 i could have had 9.8:1 but i wasn't sure how far i wanted to push it as it is only running 98

[Roy]

Real men run 7.2:1 compression and 30psi. Well at least that's how the Poms do it

[TiTAN]

Real men run 12:1 compression and 30psi.

fyp

[Roy]

fyp ... Real men run 12:1 compression and 30psi.

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[XRATED]

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MMMMMMMMMMmmmmmmmm jenvey intake and throttle bodies..

[Roy]

Close...I am waiting for Jenvey to give me some pricing for my YB. This is a Mountune Barrel injection setup. 4 injectors in the inlet and 4 above the trumpets for staggered firing. With the barrel throttles vs butterflies. Its about 8k of inlet

[sav man]

Didn't the RS500's have 8 injectors?

Got the old oil pump off tonight, now just need to wait for my billet gears to turn up for my N1 pump.

[Roy]

Yeh the RS500 manifold comes with ability to run 8 injectors and also runs a different elbow between plenum and throttle body. I am trying to hunt down the throttle body and elbow for mine now but cheapest I can find is $9--

Where are you sourcing gears for the oil pump?

[sav man]

My tuner Boost Automotive stocks them

[Roy]

Is it DIY assemble or exchange?

[zebra]

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under 100 quid....not bad

[sav man]

DIY. It's only like 6 Phillips head screws. I got the old one appart in 5 mins last night