Rb30 Blocks R31 V's Vl

[Simon-S14]

40 psi would be fine on a internally stock RB30 if the tuning and support system is spot on

boost doesnt kill engines

[mitchum]

Has anyone ever got concrete evidence that there are in fact stronger RB30 blocks?

I know this thread is old, but surely some of the big names in the game could shed some light on this

Edited June 29, 2015 by mitchum

[iruvyouskyrine]

Yes there is and they are called RD28. Apart from that all RB30 blocks are exactly the same besides a few minor things that would have no affect on block strength.

[NZ-GTT]

This is my first post here but I have been trawling on here for some time and I would like to thank SAU for the valuable information I have found here.

Anyway I know this is an old thread but I would like to share a difference here between the blocks.I have 2 VL blocks and one R31 RB30. I noticed that the bearing caps of the girdle on the R31 is 2mm thicker and it ways 9.6 kg vs 9.2kg for the VL ones, so it would definitely seem that the R31 crank girdle is beefier. I would be interested to know if this is consistent between these blocks if anybody else has an old R31 or VL block laying around.Some pictures below:

[GTRPSI]

What is the difference between the VL and R31 block where the tensioner goes on, on the front face?

Do they both have oil and water feeds drilled and taped on the hot side of the engine block?

[NZ-GTT]

All 3 blocks I have used in this comparison have the oil and water feeds drilled and tapped on the hot side of the engine block. They all have tapped holes below the water pump for an idler and tensioner and all are machined flat above the water pump where the relocated tensioner would go.So I presume they are all S2.