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

    • Well, I can recommend the partial AV system translation CD I ordered from Car Audio Workshop in NZ. Whilst it didn't address the date issue, it has conveniently translated on-screen menu items into English, and now allows the GPS-received time to be offset in hours rather than minutes, so I can display Eastern Australian time accurately ( and bump it by another hour when daylight savings starts ).
    • Yuh, if it's 45°C outside, my car is driving in it.
    • I'd be curious to hear more. Otherwise, have you driven a modern x-trail? I wonder how it compares. Here in Australia they are/were popular for rentals and fleet vehicles. I have been in some and my impression was they are bad. But, this may have been very different in the 2000s at a good trim level. Twenty years is plenty of time to make the model worse. I do very much agree with the 2 silver cars in the garage approach. But, not driving because it's too hot would not leave a lot of time in the year for many Australians. I don't think you need to worry too much unless the car has actual issues with overheating. 
    • Back again. I returned to Japan in Jul/Aug to spend time with the car on my birthday and remind myself what all the sacrifice and compromise is for. It happened to line up with the monthly morning meet in Okutama, which I have been wanting to go to for a long time. It's a unique event at a unique spot with really rare, interesting, and quirky cars. It's where all the oldheads and OGs gather. The nighttime scene at DKF certainly has its place and should be experienced if you're into cars, but there's too much bad attention and negativity around it now. IMO the better time is Sunday morning at DKF or Okutama; it's more chill and relaxed. I'm glad I was finally able to go, but not sure it's worth the drive from all the way from Nagoya immediately the day before, unless I was already staying in Tokyo for the days right before the meet, because you have to wake up quite early to make it in time. Funnily enough though I didn't drive the car all that much this trip because it was just too damn hot. While there were zero issues and running temps were nominal and the A/C was strong, RBs already run crazy hot as it is. Sure, it took it all like a champ but something about driving these cars in the ridiculous heat/humidity bothers me and makes me feel like I'm asking too much of it. I'm just me being weird and treating the car like a living thing with feelings; I'm mechanically sympathetic to a fault. Instead I was mainly driving something else around - a KX4(silver) 2001 X-Trail GT, that I acquired in May. There's a few different flavors to choose from with Xs, but visually it's the Nissan version of the Honda CR-V. Mechanically it's a whole different story as this, being the top-trim GT, has an SR20VET mated to a four-speed auto and full-time AWD! It was a very affordable buy in exceptional condition inside and out, with very low mileage...only 48k kms. Most likely it was owned by an older person who kept it garaged and well-maintained, so I'm really happy with how it all worked out. It literally needs zero attention at the moment, albeit except for some minor visual touch-ups. I wanted something quirky, interesting, and practical and for sure it handily delivers on all three of those aspects. I was immediately able to utilize the cargo and passenger capacity to its full extent. It's a lot of fun to drive and is quite punchy through 1st and 2nd. It's very unassuming -in the twisty bits it's a lot more composed than one would think at a glance- and it'll be even better once I get better tires on it(yes, it's an SUV but still a little boat-y for my liking). So...now I have two golden-era Nissans in silver. One sports car and one that does everything else; the perfect two-car solution I think👍 The rest of the trip...I was able to turn my stressed brain off and enjoy it, although I didn't quite get to do as much as I thought. I did some interesting things, met some interesting people, and happened into some interesting situations however, that's all for another post though only if people really want to know. Project-wise, I went back to Mine's again to discuss more plans and am hoping to wrap that up real soon; keep watching this space if that interests you. Additionally, while working in the tormenting sweatbox that is the warehouse, I was able to organize most of the myriad of parts that my friend is storing for me along with the cars, and the 34 has a nice little spot carved out for it: And since it can get so stupid hot in there, that made it all the more easy -after I was standing there looking at the car and said 'f**k it'- to finally remove all the damn gauges that have mostly been an eyesore all this time. Huzzah. The heat basically makes the adhesive backing on the gauge mounts more pliable to work with, so it was far less stressful getting this done. I didn't fully clean it up or chase the wiring though; that will happen once I have the car in closer possession. Another major reason to remove all that stuff is to give people less reasons to get in my car and steal s**t while it's being exported/imported when/if the time comes, which leads us to my next point... ...and that is even though it's time in Japan is technically almost up since it's a November car and the X would be coming in March, I'm still not entirely sure where my life and career is headed; I don't really know what the future looks like and where I'm going to end up. I feel there's a great deal of uncertainty with me and as a result of that, it feels like I'm at a crossroads moreso now than any point in my life thus far and there are some choices I need to make. Yes, I've had some years to consider things and prepare myself, however too much has happened in that time to maintain confidence and everything feels so up in the air; tenuous one might say. Simply put, there's just too much nonsense going on right now from multiple vectors. Admittedly, I'm struggling to stay in the game and keep my eyes on the prize. So much so in fact, that very recently I came the closest I ever have before to calling it quits outright; selling everything and moving on and not looking back. The astute among you will pick up on key subtext within this paragraph. In the meantime I've still managed to slowly acquire some final bits for the car, but it feels nice knowing there's not much left to get and I'm almost across that finish line; I have almost everything I'll ever want for my interpretation and expression on what it is I think an R34 should be. 'til later.
    • Thanks for that, hadn’t used my brain enough to think about that. 
×
×
  • Create New...