My-stery Turbo

[tridentt150v]

Sorry was going to post this earlier but had to watch Top Gear first .

Up until Sunday i thought I had a run of the mill std R33 turbo, Until I tried to fit a split dump pipe and found that it wasn't going to fit.....damn!

About 18 months ago I had the turbo highflowed by GCG from 51.2/71mm to 56.3/76mm, and they never said a thing about it [the fact that it wasn't a std one]. It is a ball bearing water and oil turbo with steel wheels and I can get 240rwkw before cams on 18psi, so its probably a good turbo - but all else is a mystery.

Things to note:

The back flange of the turbo has the wastegate dump valve spindle going through it.

The actuator has a recessed face, should be flat.

The arm is adjustable.

And now some pics............

[leech_]

so hang on you are saying it had a steel wheel before you got it highflowed ???

[tridentt150v]

Yep, and ball bearing, but they were binned when they highflowed it and replaced them with their own steel wheels.

[CEF11E]

alrighty

you jave garrett housings both compressor and turbine

your compressor housing is A/R 60

your turbine housing has a bolted on wastegate adapter plate.

so it goes:

Garrett Turbine housing/Captive wastegate plate adapter/Dump pipe.

I would give GCG a call and ask them what sort of dump suits.

Alternativly take off the dump pipe and trace the flange on paper and get the shape.

The only thing is you will prob need to get one custom made as it will be to long if you use a pre fabbed one

Looks like a fairly large turbine housing too

[tridentt150v]

Thanks Cef11e, I sort of new a bit of this [you can see garrett and the A/R 0.60 on the front of the compressor housing, and I knew only too bl##dy well that I had an inbuilt wastegate spindle on the back flange ggrrr......but other than that, I had no idea. I already have a non std dump on it - but not a split dump - it sort of looks like they used the top and bottom flange and welded it to a length of 90mm pipe with the appropriate bend in it. Its well made, I was just going to try a split dump - - because I could - - till I found out I couldn't lol.

It's nice to have someone answer that can supply me with the correct terminology though. And the size and type helps, maybe I don't need to upgrade my turbo at all now, I might have a good enough one as it is for the moment [was looking at a 2835proS].

BTW I have an apexi 90mm front pipe [and HKS hyper system].

PS I didn't know, because I've actually never seen a std turbo.............the joys of isolation in the country

[Stevie]

240rwkw at 18psi?

Thats interesting. Sounds like a lot of boost for a fairly moderatre figure.

[Stevie]

not dissing the power output but just interesting that its running so much boost at that output.

[tridentt150v]

1.2bar and 243 actually, I thought it was OK. I see ppl claiming the same power figure from 10psi etc, but I question that.

[JaiJai]

1.2bar and 243 actually, I thought it was OK. I see ppl claiming the same power figure from 10psi etc, but I question that.

yeah still sounds a little low though - what else have you done to it? maybe a good tune

[race_snooze]

good to see that you have nutted it out.

[tridentt150v]

good to see that you have nutted it out.

Yeah, thanks to Cef11e, but, still really don't know what its good for yet, probably be an all right thing. Doesn't appear to be any worse than a std hiflo one, question now is 'Can it be Better'. Guess I'll get the answers to that when I get the cams tuned by Ed on the dyno.

if it runs out of puff then its no good, but (and I think this will be the case) if it continues to make good power and gives a healthy increase then it will be sweet. When I was resetting my evc I saw boost levels of 1.8-2.0 bar so I'm optimistic the turbo can deliver [i backed off real quick from those boost spikes, worried about engine damage etc].

Thanks for the help everyone!

And Steve and JaiJai if you go and have a look at the turbo results for other cars in the Forced Induction section you will see that what my car is making is about std run of the mill stuff for a highflow. i looked through several pages and most hiflo gtst's are doing about what I am and with similar boost, or doing commensurately less with less boost.

[Stevie]

And Steve and JaiJai if you go and have a look at the turbo results for other cars in the Forced Induction section you will see that what my car is making is about std run of the mill stuff for a highflow. i looked through several pages and most hiflo gtst's are doing about what I am and with similar boost, or doing commensurately less with less boost.

Well yeah like I said not having a dig or anything pal, just seemed like a lot of boost to me. Then again i've got a very different set up, never really did much with my std turbo and havent really seen a highflow in action. And to top it all of yours is neither of the two! So i've no idea what im on about haha.

What computer are your running? And presumably stock internals? Whats it like to drive? Lag a factor?

Edited September 20, 2006 by Stevie

[tridentt150v]

Nah, its all Ok, you made me think twice........so I went searching and looking for comparisons, and thats pretty much what I came up with [R33 turbo results forum].

Mines a highflow..............just don't know what highflow....lol

Power fc, stock internals, drives fine, boost starts at around 2700-3000 and hits harder at 3500-4000. PM'd you.

[GIGOLO]

I have a turbo that looks very similar to your turbo, but with a larger turbine housing. From memory I think is a 0.63.

Either way, I have the same swing valve/dump pipe combo.

Your options as far as the dump is concearned are to either "high flow" your existing dump, which I had done at Liverpool exhaust in Sydney for $300. Or you could buy an off the shelf item from the USA, check out www.atpturbo.com. Neither option will split your exhaust gases as I was told that it was not possible with this flange???

When riging around tell the exhaust shop that your dump flange is similar to a VL turbo and they will understand. I found that most places in Sydney don't want to touch them and I only went to Liverpool as a last resort.

I am getting 1 - 1.5 more psi than before high flowing the dump, although I did fit a batmbl 5" cat at the same time to replace my 3" high flow.

Before the upgrade I was getting 240rwkw at 16psi

Cheers

[tridentt150v]

yeah, I should qualify my initial 243 at 18psi by saying that - that is the setting I have dialed in on my evc.

When looked at on the dyno printout I make 16psi, I don't get to 18.

And Gigolo are you happy with your turbo?

[leech_]

If you decide to get rid of it give it to me i will give you my stocker + i will come down and get it hehe

[tridentt150v]

Sounds good, how may $$$$ you talking about? [as I here him running away in the distance].

On second thoughts, just buy a 2835proS or GTRS and bring it down with you and we'll have a deal!!!

[leech_]

hehe no i don't think my budget permits me to do anything after my latest purchase...

Sounds good, how may $$$$ you talking about? [as I here him running away in the distance].

On second thoughts, just buy a 2835proS or GTRS and bring it down with you and we'll have a deal!!!

[Sinista32]

No Idea Danny on your turbs, though

Find it interesting when comparisons are made about Turbo's and set ups. It's nice to have a comparisons but there appears to many variances in results due to all the other factors. Note the thread in NSW where ppl list there build and rwkw or hp. eg 18 PSI 305rwkw's all depends on the build and bolt ons down to the tune.

Bottom line is if your smiling while your driving thats good enuff. Like everyone I'd like to have enuff grunt that i'm too scared to use it all.

[race_snooze]

well sin then your would scared driving a hyndi excell. lol sorry couldnt help that one.