Jump to content
SAU Community

Recommended Posts

You answer your own question the h has a bigger turbine wheel I had the td06h-20g on my 20 and was seeing full boost at 4200 18psi so it's only a few rpm if you want bigger numbers

Not really. Ill word it better this time lol.

In terms of 350KW going the 12CM housings on the TD06SH 25G and the T67 25G both can do it but would the TD06SH bigger wheel (more lag) would it be worth it for the extra power it make. As if it makes say 15more HP with much more lag then it wouldnt be worth it?

But i cant find much info comparing the 2 or in 12cm housings, so im just asking opinions.

If you were looking for a easy 350KW on 98 would it be better to go as TD06SH 25G 12cm or T67 25G 12cm?

Is that a fair statement? An easy 350rwkws on 98? I suspect it would take 20-22psi on a well tuned RB25 to make that power....I still go by Dyno Dynamics numbers...I dont know if that makes a difference but I think you can say the T67 and TD06H-25G will both make an easy 310rwkws at 16-17psi. The "H" version may make in the vicinity of up to 10-15rwks more?

I am not sure that going to a bigger exhaust housing will also give you significantly more power as the 10cm doesnt appear to be a restriction. Agree that if you went from a restrictive housing to a more free flowing housing you would bet results.

I suppose I am a bit of a scratched record but think we should all be careful about throwing numbers around, especially numbers that may be a little high

The td06 is a good turbo fairly responsive yet gives good top end the td06h-25g is bigger then the t67

Well I noticed one of the guys is making 400+ kw off his t67 and my aim is around 300-350. So maybe I need to look at the 20G instead of the 25G?

Simon's car is an animal and makes whatever power it does...its a big number because the thing runs 11 flat on the quarter and blitzes around race tracks. He has various dyno sheets from various shops where the car has been run. He runs a 50:50 E85 mix, so that helps with power, but still not a full E85 tune (is there much difference in outright power? I got no idea...but I know its helping his power over std 98)

I think it was a dynapak that put it at 410rwkws. A dyno dynamics put it at 480rwhp (or 360rwkws)...so as BSA GTScoT and others have been saying...do your own research and look at other sources rather then just SAU. If you want 350rwkws from an RB25 I think you need to push a 25G based turbo.

the way I see it, the last thing the h wheel will do is add power anywhere in the band. What it will do is add a little more scope to the compressors maximum flow.

Simon has already noted that his compressor has maxed out before the hotside, what more do you need?

that being said its no science to see the h wheel will be application specific. For example if i wanted blitzing 350kw and i put a t67 on a bad ass rb34 but the thing maxed out at 5500rpm, i would know the restriction was in the hotside. I would then try move to a larger housing, and if that did not yield the result inwas after I would then move to a h optioned unit.

Obviously the idea is bring the thing on later and keep it on longer. It would be trial and error between 10cm H or 12cm L2 in my eyes.

And again Simon is reving his to 8 with no sign of turbine cap. Now lets all forget about the h turbine until someone builds that bad ass rb34 i mentioned.

Simon's car is an animal and makes whatever power it does...its a big number because the thing runs 11 flat on the quarter and blitzes around race tracks. He has various dyno sheets from various shops where the car has been run. He runs a 50:50 E85 mix, so that helps with power, but still not a full E85 tune (is there much difference in outright power? I got no idea...but I know its helping his power over std 98)

I think it was a dynapak that put it at 410rwkws. A dyno dynamics put it at 480rwhp (or 360rwkws)...so as BSA GTScoT and others have been saying...do your own research and look at other sources rather then just SAU. If you want 350rwkws from an RB25 I think you need to push a 25G based turbo.

Roy is pretty much spot on here... 410kw at the hubs on a happy hub dynapak 360rwkw on a dyno dynamics roller.

My mix has a huge advantage over a 98 tune. It probably would not make any extra power with E85 as we can wind as much timing as we want in without detonation as it is

the way I see it, the last thing the h wheel will do is add power anywhere in the band. What it will do is add a little more scope to the compressors maximum flow.

Simon has already noted that his compressor has maxed out before the hotside, what more do you need?

that being said its no science to see the h wheel will be application specific. For example if i wanted blitzing 350kw and i put a t67 on a bad ass rb34 but the thing maxed out at 5500rpm, i would know the restriction was in the hotside. I would then try move to a larger housing, and if that did not yield the result inwas after I would then move to a h optioned unit.

Obviously the idea is bring the thing on later and keep it on longer. It would be trial and error between 10cm H or 12cm L2 in my eyes.

And again Simon is reving his to 8 with no sign of turbine cap. Now lets all forget about the h turbine until someone builds that bad ass rb34 i mentioned.

I think it may be maxed out, don't know that for sure... May be another issue, either way I don't really need any more power

In saying that, I may be going from Nistune to Vipec and dropping some cams in soon... Someone stop me FFS

Is that a fair statement? An easy 350rwkws on 98? I suspect it would take 20-22psi on a well tuned RB25 to make that power....I still go by Dyno Dynamics numbers...I dont know if that makes a difference but I think you can say the T67 and TD06H-25G will both make an easy 310rwkws at 16-17psi. The "H" version may make in the vicinity of up to 10-15rwks more?

I am not sure that going to a bigger exhaust housing will also give you significantly more power as the 10cm doesnt appear to be a restriction. Agree that if you went from a restrictive housing to a more free flowing housing you would bet results.

I suppose I am a bit of a scratched record but think we should all be careful about throwing numbers around, especially numbers that may be a little high

24-25psi and that would the least amount in that turbo sizing..

cheers

darren

... may be going from Nistune to Vipec and dropping some cams in soon... Someone stop me FFS

Why the change from Nistune to Vipec? I Interested to know what cams you are looking at as well. I would be tempted to stick with the std inelt cam and go baby 256 exhaust cam

Why the change from Nistune to Vipec? I Interested to know what cams you are looking at as well. I would be tempted to stick with the std inelt cam and go baby 256 exhaust cam

Remove the AFM from the equation... The Z32 is out of its depth already and makes the cooler piping a lot better!

Cams would most likely be a set of poncams.

Remove the AFM from the equation... The Z32 is out of its depth already and makes the cooler piping a lot better!

Cams would most likely be a set of poncams.

cheap ponnies on american ebay atm mate autocat51 is the seller..

http://www.ebay.com.au/itm/Tomei-PonCam-Cams-Camshaft-ECR33-R33-RB25-RB25DET-/190486773888?pt=Motors_Car_Truck_Parts_Accessories&hash=item2c59e58080

Neo

http://www.ebay.com.au/itm/Tomei-PonCam-Type-B-Cams-Camshaft-R34-RB25-RB25DET-Neo-/360291534189?pt=Motors_Car_Truck_Parts_Accessories&hash=item53e30c856d

I got Neo ones and they where $640 to my door...and delivered fast..

cheers

darren

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • The German place in Cabramatta was rock solid, fresh pretzel cooked to order back then. Then it went all quiet, after all the poker machines were removed, then I believe it closed for good. I did drive past the other week and noticed outdoor lighting a big screen, but no idea what is there now.  
    • Yeah I suspect even if you hold airmass per cycle/cylinder constant if you get too far away from stock you're still going to have problems running the factory tune within the bounds of the factory load scale. Cams, different displacement/rod ratio, etc. I'm just lucky that the GTIII-SS with wastegate boost + CA compliance cats is pretty much equivalent to stock turbos. When I have actual space I can finally get it tuned and modify the fuel system for flex fuel to 100% handle any detonation concerns when cranking the boost to whatever those dinky turbos can put out.
    • I would say no, why, because my daughter, who also lives in Goulburn, hasn't recommended us going there Pity, as we miss all the German joints around in Sydney, actually, the restaurants are the only thing I really miss about Sydney, and a special mention to Ishibanboshi at Bondi Junction, their Kara-age Don is heart cloggingly deliciousness (always added a special boiled egg...or 2) 😋 
    • Does that German restaurant still exist in the old place out the NW end of Goulburn? When I say "out the NW end of"...I am really being vague. It was 1997 when I was last there, and the only point of reference I can recall is that it was on the opposite side of the main drag from the big merino. And when I say "opposite side of the main drag", I don't mean "on the main drag". It was either a couple of streets back from there, or might have even been out in the sticks a bit further. Was an old farm building or mill or somesuch. And when I say "the big merino" I might actually be thinking of a completely different part of town, because I just looked on maps and the big bugger is not where I remembered him to be! The food was good, consisting largely of various German mystery-meat sausage/loaf things and kartofflen.
    • So while the second sentence is completely correct and the whole point of the conversation, the first sentence bears consideration. If this bloke is just hoping to throw big turbos on and drive it around, because there are no helpful facilities at all in his tropical paradise** then he likely has zero chance of even knowing what the TP is on the last column in the stock maps, let alone know whether the ECU is operating anywhere near it or past it. So the point is very very moot. And, per what I said before, at stock boost on those turbos, you may well be off the end of the map. **I'm just back from Vanuatu, so I know exactly what small Pacific nations can be like wrt paradise without requisite facilities. But it's not even that simple. I put a high flow on my car and had to drive it around without a proper tune because of the lack of opportunity*** to put the bigger AFM and injectors into it to allow it to be tuned. I had to turn the boost down to less than I had before, and back off the boost controller's ramp, because it was exploring parts of the map that it didn't drive in before, and really couldn't access for tuning on the dyno either, and so was pinging. It was still well within the last column, because when I first**** set up the Nistune on the Neo I rescaled all axes of the maps to give some more space to explore. ***Family dyno was broken ****This was 13 years ago, and the TIM thing wasn't a thing then and so TP would definitely grow when pushing past the stock tune's limits.
×
×
  • Create New...