R33 Rb30 Conversion

[Ender]

I am not chasing a particular hp figure, at this stage, at first I will be happy with whatever a fairly stock bottom end and head with a gcg or similar turbo, 550cc injectors gtr cooler and 3" all the way exhaust will give me more than what I had anyway....(more smiles)

I have heard that the os giken twin plates are quite good, happy to spend 1200 ish prolly...I assume a rb30 clutch will fit into rb20 bell housing, it must, they are all pretty similar housings....

I also assume that the rigoli 4k drive in/out thing is for a 33 gtst not a 32. That way they get the heads and other stuff off your car and keep the bottom end etc...

Thanks.

[sik32]

Is there anyway of fitting top feed injectors into the rb25 head???

It would be much cheaper, is there some sort of adapter with modified fuel rail setup???I also have a microtech

thanks

[JNR24]

Ender,

Ouch... RB20 GBox...

Might wanna see if you can grab a RB25 Box, that will hlod the power a little better than the RB20.

Anyhow, considering Matt lowth is only using a full faced, organic

from Exedy Daikan. With only an upgraded pressure plate and a Standard flywheel. I think the Extra Heavy Duty Cushioned Ceramic Button Clutch, that i am buying from Horsepowerinabox.com, will do nicely!

[Cubes]

I stumbled upon this ppls..

http://www.users.bigpond.com/allanreynolds...enewtwinvl.html

Interisting the way he has done the cam belt and also the vvt

[JNR24]

Whata find!

Intresting stuff in here! =)

Thanx Joel!

Also guys i got my RB26 Oil pump and it Fits straight on to the RB30 Crank, No probems!?

Where did this adapter fit?

Trev

[Ender]

Just thought I would use the rb20 g/box til it broke, then get a 25, haven't looked at prices for 25 g/boxes though...can prolly afford one at a pinch...may have to go the cheaper h-p-inabox clutch too then rather than a os unit....

Thanks,

[GiJOr33]

how much better is the RB26DETT oil pump compared to the RB25DE pump?

[JNR24]

There is a huge diffrence between the RB30 Oil & water pump compared to the RB26.

I will post some pics comparing the two side by side.

Two much to put into words.

not too sure about the RB25

[GiJOr33]

yeah i've got an RB25DE pump... I'm not sure if i'm gonna keep the VVT or not. Is it really worth it? or am I better off getting Adjustable Cam Gears?

[JNR24]

In this thread sydneykid explaind the benifts of keeping VVT.

Hope that helps.

[GiJOr33]

cool... i'll go back and check it out

[Sydneykid]

Hi JNR24, You asked "Also guys i got my RB26 Oil pump and it Fits straight on to the RB30 Crank, No probems!? Where did this adapter fit? "

You must have an R32 RB26DETT oil pump, the adaptor is for fitting the R33 RB26DETT oil pump to the R32 RB26DETT crankshaft (which is the same diameter as the RB20/30/25 cranks).

Hope that helps

[Cubes]

If you get a new GTR 32 pump wouldn't that be just as good as a R33 pump?

[JNR24]

Ok thanks for clearing that up sydneykid, Joel i would say that the "Oil pumping factor" would be pretty much the same between the 32 & 33 RB26DETT. So therefor running a R32 RB26DETT oil pump will just save you the hassels of having to by the adapter.

[Cubes]

There is a small issue with the RB25DET VCT head apparently.

They are harder to tune when the VCT turns off around 5000rpm.

Apparently the engine wants to ping when the vct turns off and causes slight power dips even with aftermarket ecu's.?!?!?!

[Steve]

Joel, does this apply to RB2det too? - I have been getting detonation when I floor it, usually just over 5000rpm, got any more info on this? May just have to get rid of the VVT, but it will be a pig to drive off boost. - think I shall test it without the VVT tomorrow.

[Cubes]

I was told today that you gain around 10rwkw in the mid from VCT.

does this apply to RB2det too?

say what?

[MetBlue_GTST]

I run Autronic SM2 with my RB25DET and theres no problems tuning with the VCT, i actually decide when the VCT turns on and off via the laptop... I also find that when it turns off at 5000rpm i get a huge surge of power....

[Cubes]

Not so much problems when tuning the VCT just you have to drop the timing back or something when the VCT turns off??

Is that right? can you check your maps?

[lowlux]

so is every1 here planing to keep the VCT also how well does it work when u have bigger cams fitted?