Rb26 Stroker's Using A Block Spacer... ?how?

[GTRNUR]

Hi all,

Im investigating stroker engine recipie's. How does the spacer block get attached to the top of the rb26 block?

I presume there is some drilling and bolting down of additional studs to locate the plate while it and the bores's are bored out for the sleve's?

Last question... How is the spacer sealed to the top of the block so there is no water or oil leaks? is the spacer block o-ring'd around ther water galleries and perhaps using a copper gasket around the oil galleries... or do they block oil all together and run external oil lines?

Or perhaps part or all of the above?

Just curious..

Cheers,

Ian

[crack]

can't tell you much but here's a pic.

[GTRNUR]

Was just looking at that same pic not long ago. Rb30 or RB31 race engines. Billet crank etc... very pretty!

[Adriano]

Im pretty sure they run an mls gasket under the spacer, although i feel this sounds a bit dodgey.

[Dahtone Racing]

just get an RB30 block and build it

save the f**k around

[R31Nismoid]

You'd think gasket each side of spacer.

Extra long head bolts etc that go through the spacer to the block to hold it in place

different belt and all that to go with it of course.

Oil/water etc would meet, just makes it longer travel, although with oil mods probably some blanked off or restricted still

[GTRNUR]

I thought the spacer would have been bored to the same size as the cylinder bores, and then the sleaves would be pressed into the spacer AND the block, holding the two together?

I guess the sleaves would have to be decked to the same height as the spacer block while the spacer is torqued to the same spec it would be with a head on it, when there is a gasket under it.

just get an RB30 block and build it

save the f**k around

There are a lot of good reasons to consider going down spaced block path which i sure we dont need to debate here.

[STR8E180]

just get an RB30 block and build it

save the f**k around

the OS giken RB30 stroke kit is alot less f**king around compared to using a RB30 block

my is under going a RB30 + RB26 cylinder head in his R32 GTR and nothing fits

he regrets not going with the OS giken 3L stroker kit now

[GTRNUR]

That the reason right there. Its not as big a deal in a 2wd skyline (althoough it does take some effort), a gtr is a whole diferent situation.

It makes looking at short rod stroker engines like the Tomei 2.8 kit and what Mark99 did with a 2.9lt in an RB26 block worth investigating.

[Dahtone Racing]

the only thing a OS kit will help with fitting is the sump because you wont need an adapter plate

your still gonna have issues with the height using an OS motor or an RB30 block

personally i just dnt like the idea of spacer plates and extra gaskets etc

i like to keep things simple

i had no problems fitting my RB30 but then again it wasn't in a GTR

Edited April 19, 2008 by Dahtone_Racing