Jump to content
SAU Community

Recommended Posts

  • 2 weeks later...
  • 2 weeks later...

I'm currently doing a single turbo conversion on my GTR with a 6262. What have people done with the water lines since these turbos don't need them?? I'm trying to figure out best solution.

So the one coming from behind the head connected to the one from the front?? I'm a bit lost here not much info out there.

How about the one on the block down the bottom, just block that one off?

Mate finally bit the bullet and is ditching his GT3076R for a 5858 on his R34 Gt-t, was making a touch under 500 before so I'm guessing it will bump up to around 550 with not too much more lag

Went in for a tune last night. 525rwhp on 1.4bar and 555hp on 1.6bar before it started having valve spring issues top end. Higher boost looked like it was heading just under 600hp with 1.8bar.

Boost comes on around the same as the 3076R but makes a bit more power earlier (200rpm in lower range when ramping boost) and makes an extra 70-90hp on the same boost through the mid range and top end. Overlay with the T67 on my old green car and they were very similar but the 5858 will smash it with the valve springs sorted and some more boost.

Forgot to get a graph printed (will get one when valve springs are done) but it's probably the best mid size turbo I've seen on a RB25

TLDR; Comes on earlier and makes shit loads more power than a GT3076R

Edited by SimonR32
  • Like 4

Awesome results. I thought the 5858 would be laggier then the 3076 by miles and that the 5558 would be a closer match. Apparently not!

Im guessing .82 rear? BB version?

Technically boost builds a little slower on the 5858 but I guess it's flowing a bit more air so more power down low. Owner says it feels better low down on the road than the GT3076R as well

Yes and yes to the other questions

Edited by SimonR32

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

    • I don't think the shuffle can damage the turbos. It only happens at low shaft speeds and loads. It's just annoying (to some people - others are tickled by the effect) and it quite possibly reduces spool performance a little bit.
    • Oh dear. The panel beating needs to be done before the filler work. Do you have a photo of the dent before you started? Hard enough to not flex and only hit the high spots?  What do you mean it was just temporary? 
    • 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. 
×
×
  • Create New...