Jump to content
SAU Community

Recommended Posts

Ok, I couldn't find anything of value so I thought I would ask how the T70 turbo's go with an RB25 motor?

.82 exhaust size with a 60.5mm front wheel is the one I am looking at.

I am ok with a little lag, ie it starts boosting at 3500rpm.

but do they come on at 5k or something ridiculous?

Not after opinions on the quality of a T70, just what they are like on a 25 please.

Link to comment
https://www.sau.com.au/forums/topic/140893-t70/
Share on other sites

My mate one tuned one for a customer rb25det and it made 420rwhp on 19 psi. it made full boost at around 4000rpm

Ok, I couldn't find anything of value so I thought I would ask how the T70 turbo's go with an RB25 motor?

.82 exhaust size with a 60.5mm front wheel is the one I am looking at.

I am ok with a little lag, ie it starts boosting at 3500rpm.

but do they come on at 5k or something ridiculous?

Not after opinions on the quality of a T70, just what they are like on a 25 please.

Link to comment
https://www.sau.com.au/forums/topic/140893-t70/#findComment-2624026
Share on other sites

My mate one tuned one for a customer rb25det and it made 420rwhp on 19 psi. it made full boost at around 4000rpm

that's the answer I was hoping for.

have got 550cc injectors, haltech ecu etc etc, so I figure if I see full boost by 4k and I am making high 200rwkw's, they must be a good "cheaper" turbo then.

cheers

Link to comment
https://www.sau.com.au/forums/topic/140893-t70/#findComment-2624032
Share on other sites

420rwhp is about 300rwkw :sick:

that's the answer I was hoping for.

have got 550cc injectors, haltech ecu etc etc, so I figure if I see full boost by 4k and I am making high 200rwkw's, they must be a good "cheaper" turbo then.

cheers

Link to comment
https://www.sau.com.au/forums/topic/140893-t70/#findComment-2624074
Share on other sites

assumptions?

Why do you think I am asking the question here?

Got an answer that relates to an answer I got elsewhere that they are pretty good on a 25, but laggy on a 20.

The 20 I speak of made 24orwkw on 19psi.

I plan on running 16psi in the 25 and anything between 250-300 rwkw will be a big jump from 204rwkw that I had last tune.

Saying that, it's more a question about lag.

Link to comment
https://www.sau.com.au/forums/topic/140893-t70/#findComment-2624080
Share on other sites

yep thats right boosting at 4800, i had power fc, the usuals no internals, too get it to boost early like 4k you would need a good set of cams. and im now running a gt3040. your better to save your money and do the job right first than waste $500 or however much they are, i learnt the hard way money down the drain and i had a lag monster.

Link to comment
https://www.sau.com.au/forums/topic/140893-t70/#findComment-2624094
Share on other sites

gt3040 or a gt3540, is a million times better. you can choose your ex. housing size for your response you want. there excellent quality, ball bearing, water cooled. i really wish i went that to start with instead of trying to get cheap power that just cost more in the end.

Link to comment
https://www.sau.com.au/forums/topic/140893-t70/#findComment-2624119
Share on other sites

I had one also on my rb25 and didnt see full boost till about 4800-5000rpm...was a mass lag monster. On 17psi i made 350rwhp with supporting mods and all, no cams though.

then it ceased up cause the shitty oil line i used got blocked up and starved the turbo of oil.

Now have a gt3040 with .63 rear, much much better :)

Link to comment
https://www.sau.com.au/forums/topic/140893-t70/#findComment-2624947
Share on other sites

i got a friend who has one of these t70 turbo's off ebay..its making around 293rwkw @ 18psi,bit of a lagg monster but once it comes it comes on HARD..has been for last 5months..never missed a beat..i dont understand how u guys break them so easily?

Link to comment
https://www.sau.com.au/forums/topic/140893-t70/#findComment-2627344
Share on other sites

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


  • Latest Posts

    • Can u check this way it works for power supply?
    • These coils draw 10amps that what i read online
    • I appreciate the detailed explanation, think I understand now. I spent the better part of last night reading what I could about shuffle and potential solutions. I had replaced the OEM twin turbo pipe with an alternate Y pipe that is separated further away from the turbo. The current one is from HKS and I had a previous pipe that was separated even further away, both have shuffle. I had heard that a divider can be welded in to the OEM pipe to remove turbulence, and figure that aftermarket pipes that are more separated would achieve the same thing. From what I read, most people with -10 turbos get shuffle due to their size, though it's a bit less common with -5s on a standard RB26. I think Nismoid mentioned somewhere it's because OEM recirculation piping is common in Australia with -5 cars. It seems that the recommendation tends to vary between a few options, which I've ordered in what I think is most feasible for me:  1. Retune the MAP or boost controller to try to eliminate shuffle 2. Install OEM recirculation piping 3. Something called a 'balance pipe' welded onto the exhaust manifolds. I don't know if kits for this are available, seems like pure fabrication work 4. simply go single turbo My current layout is as follows: Garrett 2860 -5s HKS Racing Suction intake MAF delete pipes HKS racing chamber intake piping hard intercooler piping,  ARC intercooler HKS SSQV BOV and pipe Haltech 2500 elite ECU and boost solenoid/controller HPI dump pipes OEM exhaust manifolds HKS VCAM step 1 and supporting head modifications Built 2.6 bottom end All OEM recirculation piping was removed, relevant areas sealed off I'll keep an eye out for any alternative solutions but can get started with this.  Only other question is, does shuffle harm the turbo (or anything else)? It seems like some people say your turbo shafts will explode because of the opposing forces after a while and others say they just live with it and adjust their pedal foot accordingly. 
    • That worked out PERFECTLY! Thank you big time to JJ. He was able to swap me his stock diff. He drove all the way to me as well. Killer! Removal & install was pretty straightforward. The diff itself is HEAVY. So that’s a 2 man job.  Man does the car drive nice now! Couldn’t have worked out any better 👌
×
×
  • Create New...