Big Power RB30 Engine Build

[Ludders]

Originally Posted by pupsi

So do I stick with the 650bhp and have the turbos kick in at 4500rpm for the time being, untill I source a T51, or bin it all and go all out tooth and nail for the T51??

Maybe the answer lies in a test drive. Have you had a chance to take the car out since returning from holiday? See how it feels. You will soon know if you want something different.


Jeff


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[matt j]

Originally Posted by Cardiff R33

Matt, out of interest who recomended that? Feel free to pm if its a toucjy subject

PM sent, this is not the place to discuss.

[Cardiff R33]

Agreed!

[pupsi]

Originally Posted by matt j

Surely that depends what YOU want from the car Pupsi, what are your goals?

I wanted a 10 second car capable of 200mph+ which was never in a month of Sundays going to come from the T04Z I was recommended to buy, hence I'll be changing to the T51R SPL.

Agreed, no chance of your goal with the T04Z. The SPL kicks in a little later than I would like (was also thinking of the same) but the KAI gives you the power sooner, albeit about 200hp less, (make up for it with the Nos) I'me sure you can also achieve your goal with the Kai, thats what I'me contemplating or should I go for the SPL?? Decisions, decisions.

[pupsi]

[quote=Ludders;879919]Maybe the answer lies in a test drive. Have you had a chance to take the car out since returning from holiday? See how it feels. You will soon know if you want something different.

The turbos dont start making boost till 4500rpm and are on full song at around 5250, 5500rpm, thats useless on a 650bhp car!

[R.I.P.S NZ]

[quote=pupsi;880134]

Originally Posted by Ludders

The turbos dont start making boost till 4500rpm and are on full song at around 5250, 5500rpm, thats useless on a 650bhp car!

The original turbo's I recommended and had installed on your engine before you changed your mind were well in by 3500rpm and made 650hp at 1.7 bar, they were super responsive, awesome on ther road and with a small shot Ludders (with the same turbo's) made 800hp, I REALLY wish you had driven his, it was really nice, just what you wanted in the first place.

Rob

[Hugo]

Do they fit on the current manifold?

[R.I.P.S NZ]

Originally Posted by Hugo

Do they fit on the current manifold?

Yes, the entire build was finished with the other turbo's on the same manifolds, same dump pipes etc, I think the only thing we had to mess round with was the wastegate actuator mounts, I probably still have the first set we made, I also still have the 1st set of brand new turbos (never run)

Maybe contact pupsi, might be a way to keep everyone happy here.

Rob

[Hugo]

Yeah I quite feel for Rob and Pupsi, this awesome build should not end like this!
I'm sure it will come to a good end

[matt j]

Originally Posted by pupsi

Agreed, no chance of your goal with the T04Z. The SPL kicks in a little later than I would like (was also thinking of the same) but the KAI gives you the power sooner, albeit about 200hp less, (make up for it with the Nos) I'me sure you can also achieve your goal with the Kai, thats what I'me contemplating or should I go for the SPL?? Decisions, decisions.

Pupsi, having seen the results John got with his RB28 KAI and what results can be achieved with the SPL - in terms of driveability against performance, I chose to go with the SPL. I'm also going to install a nitrous kit to help spool the turbo on the strip but with having the sequential I don't think keeping it on song on the road will be too difficult or take away the driveability.
There's one way to find out, but I'm sure with the extra displacement your's would be more than capable. Depends what you want but if you go the T51R route at least you have the manifold there if you ever change you mind.

[pupsi]

Originally Posted by matt j

Pupsi, having seen the results John got with his RB28 KAI and what results can be achieved with the SPL - in terms of driveability against performance, I chose to go with the SPL. I'm also going to install a nitrous kit to help spool the turbo on the strip but with having the sequential I don't think keeping it on song on the road will be too difficult or take away the driveability.
There's one way to find out, but I'm sure with the extra displacement your's would be more than capable. Depends what you want but if you go the T51R route at least you have the manifold there if you ever change you mind.

Yep Matt you're right, I'll keep hold of the manifold. Decision, its going to be the T51 Kai, will be ordering the complete kit tomorrow. Game still on!!

[Smokey 1]

Good choice mate, I am sure you wont be disappointed and you will never tire of the sound that's for sure.

But you cant call it the whistely job, as I have the TM on that



Smokey

[pupsi]

Originally Posted by Smokey 1

Good choice mate, I am sure you wont be disappointed and you will never tire of the sound that's for sure.

But you cant call it the whistely job, as I have the TM on that



Smokey

Put a Screamer pipe/Chatter pipe on it, and call it the Screamer/Chatter job?? LOL.

[Dynamix]

Originally Posted by pupsi

Agreed, no chance of your goal with the T04Z. The SPL kicks in a little later than I would like (was also thinking of the same) but the KAI gives you the power sooner, albeit about 200hp less, (make up for it with the Nos) I'me sure you can also achieve your goal with the Kai, thats what I'me contemplating or should I go for the SPL?? Decisions, decisions.

I dunno about 200mph but a few guys in aus are doing 10 second passes with t04z's (standard displacement rb26) with not to much trouble.. your sequential would help the times even more..

Smokey1, when does boost kick in with the kai on your 2.8? I'm interested to know when boost would come on with a 3L with cams/headwork.. Who was the user on here who did the rb30 conversion himself (R32 GT-R) I could ask him if i new his username?

Cheers.

[pupsi]

User name you're looking for is R32Combat (Andy) also known as the Skylab man?? he built his own RB30. Hope that helps.