Rb30 Block Witch One To Use

[blockasR32]

dont know whitch 30 bottom end to use for my 26/30 can someone slarify this for me

this engine is going to be pulled right down fully built as well as the head

[R34GTFOUR]

the series 2 na block will be fine

the only reason people like the series 2 na blocks is that they have the coolant feed and oil feed and return already pre-drilled and tapped ready to go for the turbo. It just one less thing to worry about.

[Dearlove]

where do they come from?? the vl??

[R34GTFOUR]

thats the most common place in aus to get one, get a late model vl and there should be a series 2 block in there somewhere

[blockasR32]

so wats the differencne between the series two block and the turbo block. i had some one telling me that the is something to do with the oil gallieries or squirters or something

[daisu]

The RB30 doesn't have oil squirters in any of the blocks.

The turbo has lower compression compared to the NA, so it is a poor choice if you are retaining standard bottom end. Since you are going to be rebuilding with new pistons/rods etc it wouldn't matter which block you used. Though I think the mentality is that a non turbo block has probably had an easier life compared to a turbo block.

[Bliksem]

S1 Block - No Oil/Water Feed for turbo (Can still use but must be drilled and tapped)

S2 Block - Oil / Water feed provisions supplied

Turbo Block - Same as S2 with low comp pistons, higher capacity oil pump etc.

[blockasR32]

thank you all for ur help it has been muchly appreciated hopefully the engine will be a big success

[JonnoHR31]

most of the NA VL's have s1 blocks. most if not all 31s have s2 blocks

[R34GTFOUR]

true but in oz its much easier to find a vl then a r31

[fatz]

any r31 block has the shit you want

less thrashed as well