rb30 bottom end?

[GiJOr33]

bugger... doesn't explain how to do it with a VCT head!

[MegaGTS4]

http://www.autospeed.com/A_0004/article.html

This one says something about the variable inlet cam timing!

MEGA

[Roy]

Can you source more than one Apexi turbo, if so one may suit my needs??? Could you PM me a price??

As for the VCT, as i understand it the RB25DE head does not use the VCT, which is the reason a lot of people use these heads as it simplifies the process a little.

I have read that the VCT can be used with the RB30 bottom end as mentioned above by tapping into oil pressure line.

People have used the RB20DET ECU to run a non VCT RB25/30 engine , but if you want to use the VCT it means aftermarket ECU, or maybe OE R33 with Power FC.

I understand that they use the same stud diameter but ive heard different people tell different tales about oil and water lines. Either way budget some $$$ for this and have it done when you have the block drilled and tapped for the new timing belt.

As for not worth the money, well if insurance and rego wasnt as issue i would be building an RB25/30. Even if your not chasing huge HP, extra 500cc help spool up larger turbos & plenty of locally developed perfromance parts for RB30 bottom. Hell you dont even really have to run aftermarket rods and pistons to make a lazy 250kws at the treads. Use a 6000rpm readline with 1bar of boost from a large turbo. Just make sure you use decent bearings, rod bolts etc, and have the OE stuff x-rayed and balanced/linished etc.

There are plent of VLs using 12 valve head making far more power then this and running in the low 10s and high 9s, some of the 10-11sec cars use std internals.

Look no further then the Sammut Bros old 300ZX drag car that ran an RB30, i recall it even beat Victor Bray one year. Dont know extent of mods though! Nizpro also has a long list of 9-11 sec streetable VLs.

[GiJOr33]

what gearbox and diff do they use? cos i'm sure a standard skyline box and diff wouldn't hack much more than 300kw at the treads... especially not with a few hard launches!

does the VCT make that much of a difference when talking RB30DET? Where would you notice the power difference, bottom or top end?

Thanks

Andrew

[meggala]

the skylien gear box and diff can be up rated no problems they are basically the same as an rb 26 gear box