Differences with R33-34 engines

[owned]

Apart from the neo VCT, what kinds of differences are there with the R34 turbos? There seems to be a massive difference in engine power potential between the 2 cars. Someone help???

[JezR31]

the R33 turbo has a steel compressor wheel

the r34 turbo has a plastic compressor wheel

they both have ceramic exhaust wheels

ive herd that some S2 R33 turbos have the plastic wheel aswell but im not sure.

but i think the plastic compressor wheel is better then the ceramic one from the R32s.

but i think alot of the gained power has been from the VVT. There's less lag aswell.

[JezR31]

hmmm is it possible to have a Titianium Compressor wheel?

[Laurence]

I understand the the R34 NEO engine has solid lifters like the RB26 so you should be able to rev the bejeezus out of it....

[owned]

but bore and stroke are the same with the older (r33) series engines which limits RPM... so im still in the dark here

[Laurence]

Well I guess it depends what limits rpm first, the valvetrain or the bits of metal swinging around underneath...

After hearing the Blitz R34 drifting car screaming on the (sounds like 8,000rpm+) limiter I am guessing that this is the difference.

[Abo Bob]

an RB26 has the same size bore and a longer stroke and revs higher than an RB25 so...

Well I know it probably doesn't mean much cos I don't know what the R33's rev like but at 7000rpm mine absolutely sings. Haven't tried taking it higher though.

[QuickR33Melb]

The turbos for the R33 and R34 bolt on exactly the same. I assume they have exact power comparisons. After my turbo blew I was looking at a rebuild but after alot of frigging around I just brought an R34 turbo yesterday and I get the car from the performance shop today. I will post in the next few days with any differences (if any) I notice with the new turbo and hopefully some dyno sheets to compare

[Yotis]

Well I guess it depends what limits rpm first, the valvetrain or the bits of metal swinging around underneath...

After hearing the Blitz R34 drifting car screaming on the (sounds like 8,000rpm+) limiter I am guessing that this is the difference.

Hit the rev limiter on me GTT for a short time.. oops.. :| But friend of mine reckons its a very sweet sound..

As to the original post.. not sure about the exact diff between the two turbos.. but was told that the standard R34 turbo can take 1bar normally no problem. Tho cant say I'm gamed to do it atm.

[franks]

i get funny noises coming from the turbo after running my car on more than 0.7bar after a few squirts...

r34 turbo's, plastic compressor wheels = the suck

[Yotis]

Hrmm.. 0.7 bar.. what does that read on the standard boost gauge? Think mine is running approx. that, on my boost gauge the needle goes over ~2/3mm after the indicater between the 0 and 1+ (On boost that is) The turbo seems fine, cause I usually drive with more than just a few squirts..

[666DAN]

I've got an R33 turbo on my one so can't really compare....but it's definately smooth to the rev limit ....well when the coils are firing properly

[Bass Junky]

Ppls,

Skylineboy: Titanium wheels? Yes, F1 turbos used to have these. Obvious advantages, and obscene costs.

I've raised my boost upto the factory boost cut point on my R34 (a touch below of course) and and have had zero problems thus far (* frantically knocking on wood *).

I bounce off the rev limiter quite often. The factory tacho in the dash just isn't fast enough and first gear often sees me hit the limiter. oh well, that's what its there for!!

BASS OUT

[IMACUL8]

Mitsi Evo 6.5, 7 and 8 all run Titanium wheels in there td05.

Not bad hey...

Dan

[darkrams69]

the R33 turbo has a steel compressor wheel

the r34 turbo has a plastic compressor wheel

they both have ceramic exhaust wheels

ive herd that some S2 R33 turbos have the plastic wheel aswell but im not sure.

The S2 R33 GTS25t type-m has a turbo charger made by hitachi, and it's had a ceramic compressor wheel.