Rb30det Into Lc Gtr Torana

[frogstomp_R31]

im realy not looking for major power just a steady 200 rwkw maybe a tad more but looking for shit loads of torque

[mr_rbman]

i also just noticed that you said its a rb30et bottom end, if thats true then having a turbo bottom end with that head i possibly think could be worse than a bog stock rb20, i know its a big call but i think you could've wasted the little money you spent!

[Bl4cK32]

rb30et and rb30e bottom ends are the same

[sky30]

rb30et and rb30e bottom ends are the same

They have different compression pistons.

[culater]

who said old holdens have no brakes?....

[mr_rbman]

They have different compression pistons.

cheers, andrew!

Rb30et is 7:8:1 and rb30e is 9:0:1, he said he didn't touch the bottom end so that leads me to believe he is going to be a tad dissappointed with what he has!

[Cubes]

Ahh well these garret internal gate gt30/gt35 turbine housings are supposed to be out at the end of this month.

Low comp... All the more reason to bolt on a big huffer and force some boost down the rb30det's throad.

[Bl4cK32]

depends on what head gasket he is using, and what cc the head is, or if the block had been decked as to what comp ratio he is running does it not?

[Cubes]

Yes but those things (apart from if your running a thick arsed headgasket) only make minimal difference to comp ratio.

[mr_rbman]

i guess we'll just wait an c once its tuned, will be very interesting to see! Will be able to run plenty of boost and timing though!

[culater]

erm.. old aussy cars don't stop.....

no they dont.. but they can if u spend the dollars.....

[culater]

rb30et and rb30e bottom ends are the same

the rb30 et block has oil squirters to cool the pistons.. the rb30 e does not.

[Cubes]

the rb30 et block has oil squirters to cool the pistons.. the rb30 e does not.

Where did you hear this culater?

I've seen both a turbo and n/a block and they were identical apart from the pistons.

I bought the n/a one sitting next to it for $150.

[mr_rbman]

i've heard that too on the grape vine joel but never seen any proof!

[Cubes]

I remember it was mentioned some time ago by some one who confused the bore/rod squirters or what ever they are called with the piston crown oil squirters.

The bore/rod squirters squirt oil on to the load side of the bore.

Not sure of the exact terminology.

[Cubes]

I've dug up a couple pics of an RB30ET piston. As can be seen there are no skirt cut outs for the piston crown oil squirter.

I've also attached a CP piston with the oil squirter cut out.

[S3_Girl]

They defintily don't have oil squirters, i just transfered everything

across into a Na block for a cheap rebuild. Pistons , cam, oil pump, intake manifold are about it.

cheers

darren

[frogstomp_R31]

the rb20 head has a smaller chamber but has been cc d it also has the turbo et bottem end so it should not be 7.8.1 it should work out around the 8.5 -9.0.1 witch should be great just gotta finish painting my bay then motor goes in and car goes down to boostworks

[mr_rbman]

the rb20 head has a smaller chamber but has been cc d it also has the turbo et bottem end so it should not be 7.8.1 it should work out around the 8.5 -9.0.1 witch should be great just gotta finish painting my bay then motor goes in and car goes down to boostworks

: I'm afraid you've got it round the wrong way buddy, having the turbo bottom end with the turbo pistons will lower your compression, not raise it. I'd be guessing somewhere round the 7:1 mark which should be interesting to say the least!

[Cubes]

With the 52-53cc RB25 head it works out to some where around 7:1 but as the rb20 head has a smaller combustion chamber it will be slightly higher.

What did the rb20 head cc up as?