rb20 and rb25 block pics please??

[the_momo]

ok so i have come to conclude that my motor is probably a rb25, i have posted about this issue before, but i have found some pics of headgaskets for the 20 and the 25 and some look different, and some the same. i realize that many places use the same pics, so what i am wondering is if anyone could post a pic of their rb25 det block. i need to see what the head surface looks like to cross reference it to mine to determine for sure what i have.... i know dumb. i saw a pic of carl's car and his block looks the same as mine, so that is why i was wondering if the 25 is the same. i have 25 head parts, but i am so lost. i just want to be sure before i drom 300 or so on a metal headgasket. thanks again for the help all.

[98birdls1]

Hope this helps, best I have.



Luke

[gawdzilla]

measure your bore with a ruler. 78mm for rb20, 86mm for rb25. 8mm is a big difference..

[the_momo]

that looks just like mine, im assuming that you have an rb25? funny thing is, that looks just like an rb 20, or at least like the one carl h posted pics of. maybe they are the same block, diff bore and stroke? in that case, it would be the same headgasket. thanks for the pic.

[98birdls1]

Yes its a Rb25 block, and no the headgasket will not be the same between motors. Like gawdzilla said the bores are WAY different.

Luke

[the_momo]

thats what i figured. they dont really list any differences between them other than bore, the actual pattern is the same. cool thanks a lot i reaqlly appreciate it.