Rb26dett Head On Rb30

[warpz0r]

Hi all,

from reading though some of the posts i noticed that the head stud holes need to be modified to fit a rb26dett head onto a rb30 block....

is this just drilling and re tapping the holes in the block or is there more that needs to be done?

Thanks

[N I B]

Thats right but its not a do at home job.Cam belt needs work also

[KAWAII_hachi_roku]

it must be diffuiculty conversion?

[N I B]

Not very hard just you want the new head stud threads right and any good machine shop can do it, not an expensive job.

[Warpspeed]

Two ways to tackle the head bolts.

1/ Drill and tap the block to take the 12mm GTR bolts, (that can be tricky).

2/ Use a set of 10mm standard RB25DE head bolts. They fit the RB30 block and are the correct length for the GTR head.

The GTR head fits straight onto the Rb30 block, and the dowels align the head and head gasket. The bolts only clamp down the head, they don't locate anything. Either 10mm or 12mm bolts work fine.

[fatz]

so standard rb25de head bolt are the go

can anyone else confirm this i dont want to retap the bolt hole till i rebuild the motor

pete