Rb20 25 26 & 30

[mad032]

this is what im looking for and anyone with rock solid knowledge please reply only. Thankyou.

I need: Block height deck

Conrod length

Bore Size

Stroke

Piston compression weight

Combustion chamber volume

Main journal size

Rod journal size

Oil pump drive size. ie, are they the same and what year did they change

Port volume

& last of all for now Valve sizes

Possible monsta in progress but neeed to know how much is interchangable.

Thankyou Ryan

Edited February 19, 2007 by mad032

[mad032]

so noone on here can help me with the specs ay?

Hows about pointing me in the right direction of someone who knows their sh*#t

[kastin]

search is ur friend.

failing that buy a manual.

[700HP-GTR33]

http://www.marque.com.au/scripts/BooksByMa...ssan&Type=C

$275.00.....not cheap for all your answers....

Or ring a few work-shops..they might let you loan theirs for a short time"deposit might be needed"

[Fitzpatrick Speed Works]

this is what im looking for and anyone with rock solid knowledge please reply only. Thankyou.

Conrod length = 5"98

Bore Size= 86mm

Stroke= 85mm

Piston compression weight ???? =dont understand

Combustion chamber volume= 64cc for rb25/26, 53cc for rb30

Main journal size = really cant remember off my head got it written down at work

Rod journal size = see above

Oil pump drive size. ie, are they the same and what year did they change= not the same, change in 94 for rb26, others stayed the same i believe, N1 pumps are different.

Port volume= what exactly you after

& last of all for now Valve sizes 34mm inlet, 31mm exhaust rb26

[mad032]

What i mean by port volume is if you were to turn the head upside down and pour liquid into any 1 port, how much volume would it hold.

Cheers Ryan

Edited February 20, 2007 by mad032

[Alf]

that would be how many cc's in a bowl

Edited February 20, 2007 by Alf

[mattymagoo22]

it says how many cc's above and the tolerances would be pretty close.

[Adriano]

Im not sure what the answer is, but port volume is the volume of the port as he said, put the head on its SIDE and fill the port with liquid. Maybe if you tell us what it is you are trying to do, we may be of more assistance.

[mad032]

that one is more of a curiousity question.

and yes that was my bad... head on the side.

so can anyone fill in the blanks Fitzpatric speed works didnt?

I failed to mention that i need these specs for RB20 25 26 and 30.

Also need block deck height.

Ryan

[Adriano]

ACL website should have most of the imformation, i think youo meant compression height, i.e form the centre of the gudgeon pin to the piston deck height.

[mad032]

typo mate thats why it wasnt understood from the start if your refering to the first post!

ill try acl

cheers