Jump to content
SAU Community

Recommended Posts

I'm hoping pump gas cause here we dont have 98RON. Dunno what the knock is gonna be on our horrible gas, might have to go water/meth inj. for a save tune.

Hey Girorostar, yeah most of the fuel you get on the islands is fairly poor ( comparitable to a mix of 91 and cheap ethanol)... I spend quite a lot of time in the carib/lower carib/trinidad etc on private superyachts.

I'd suggest buying 20lt drums of toluene and add a 7:1 mix of gasoline:toluene. Your biggest problem will be that the fuel you get where you are isn't of a constant grade and is usually full of water!

If you tune your car on a 'good' batch of fuel then fill up will a different/poor batch of fuel and drive the car hard you may very well damage the engine quite quickly.

Water will damage your fuel system and will also allow sludge/bactiria to grow in your fuel system (it'll gunk it up pretty quick). The biologicals actually live in the water but feed on hydrocarbons (your fuel) then 'poop' out more water and gas/sulfates etc.

I've helped a few guys with they're imports on the islands, this is what I suggest:

Toluene

Good knock sensor and indicator (eg Power FC)

Good knock correction mapping

Very conservative tune

Single point methanol injection... (seperate tank, pump, injector and controller) Not WMI.

We set up a single point meth injector on a s13 in Sint Maartin... worked quite well!

Good luck

Justin

Hey Girorostar, yeah most of the fuel you get on the islands is fairly poor ( comparitable to a mix of 91 and cheap ethanol)... I spend quite a lot of time in the carib/lower carib/trinidad etc on private superyachts.

I'd suggest buying 20lt drums of toluene and add a 7:1 mix of gasoline:toluene. Your biggest problem will be that the fuel you get where you are isn't of a constant grade and is usually full of water!

If you tune your car on a 'good' batch of fuel then fill up will a different/poor batch of fuel and drive the car hard you may very well damage the engine quite quickly.

Water will damage your fuel system and will also allow sludge/bactiria to grow in your fuel system (it'll gunk it up pretty quick). The biologicals actually live in the water but feed on hydrocarbons (your fuel) then 'poop' out more water and gas/sulfates etc.

I've helped a few guys with they're imports on the islands, this is what I suggest:

Toluene

Good knock sensor and indicator (eg Power FC)

Good knock correction mapping

Very conservative tune

Single point methanol injection... (seperate tank, pump, injector and controller) Not WMI.

We set up a single point meth injector on a s13 in Sint Maartin... worked quite well!

Good luck

Justin

Thanks for the advice Justin, yea the biggest issues a lot of RB motors has on this island is fuel, they dont like it! I will start doing some research on this on how to set it up on my car. Hope everything will go right and i dont blow the engine.

A friend of mine with a r33 gtr made 315rwkw on pump gas here but he has a HKS built motor and another friend of mine with a stock motor r33 gtst made 270rwkw on a very conservative tune cause he had a lot of knock on higher power had to lower the boost. He's still searching for a way to drop down the knock levels, I will tell him about this and see what he thinks.

  • 4 weeks later...

i will try the 5857 AR:82 on my RB26 !!! after i saw the result on a 1JZ from the state .

what do you guys think ?

If you plan to run E85 and 35psi I think you will be VERY happy.

If you plan to run E85 and 35psi I think you will be VERY happy.

I think you'll find that's about on the money... They're a great turbo if you'r running BIG boost numbers. Don't expect tooo much from 20psi.

Cheers

Justin

  • 1 month later...
  • 1 month later...

so what did the powertune r34 gtr with the 7175 billet on it make powerwise? the powercruise youtube vid is impressive to say the least....

About 0.0197hp/$1 at the fly.

Find the turbos suggested output and do the math, then consider that as a rough minimum.

Your chasing the wrong product, Honda has the power of dreams!

After the last dyno run, I've changed a few things- most importantly the exhaust. Turns out the center muffler has partially collapsed causing higher backpressure in that section of the exhaust. I'm not shure how that will change the power output, however it feels more responsive now.... either way I was allways changing setups to a top mount TD06 and there's no point re-tuning untill I get the new turbo on.

If anyone is interested I have my 5557 for sale at the moment. $1400 with 46mm wastegate and professionally made stock manifold adapter.

post-22624-0-87487800-1303338949_thumb.jpg

http://www.skylinesaustralia.com/forums/topic/361517-billet-turbo-hks-manifold-and-a-heap-more-good-gear/page__gopid__5772382#entry5772382

Cheers

Justin

  • 2 months later...
  • 2 months later...

So..... anyone got anymore results with these turbos?

PJ??? anyone?

also wat was the rear housing size on the precision billet 7175 used on the white r34 gtr

i want to go a 6765 divided for street and the exact 7175 used on the powertune 34 for show, race n dyno

  • 2 weeks later...

Here's a suitably ridiculous result from an EVO in the states running a new Precision PT6766 (.82a/r hot side) at just over 40psi on E85:

stm_ricer_846_620_dyno.jpg

Mustang Dynos read in the territory of Dyno Dynamics, they are not generous dynos at all - to put down 850awhp/634awkw this is a ridiculous piece of machinery. Imagine one on an E85 slurping RB30? :D

im ordering 1 monday...

built tomei 2.8, 288 jun cams, 2000cc id injectors... powertune twin 044 in tank setup...

wil b interesting, hope to have running by xmas or just afta...

do u think ported "hp" cover would make much difference over the non ported "h" cover?

cheers

im ordering 1 monday...

built tomei 2.8, 288 jun cams, 2000cc id injectors... powertune twin 044 in tank setup...

wil b interesting, hope to have running by xmas or just afta...

do u think ported "hp" cover would make much difference over the non ported "h" cover?

cheers

On a big capacity good spooling engine you'll need the ported front cover to avoid surge but Rb's are known to spool slowly so you should ok without it...

bigmikespec, just want some advice from an expert.. wat are the pros n con of having and not having the surge cover for "my" application on this turbo?

i want to run about 25-30 psi on the street on e85 and keep winding it up for race til it tapers off the power/boost curve...

cheers

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

    • Actually, that's not entirely true. It's also the same motor in the 1st gen Nissan Cube but they're rare as hen's teeth.  
    • Yeah it is always worth testing and balancing actuators out of the box, just set the pressure regulator on a compressor very low (eg 5 psi) and increase it slowly to see when they both move.....unfortunately while you may be able to adjust the length of the actuator rod to minimise any difference, the actual pressure they move from is not adjustable so you need a well matched pair. And yes, the VCAM is probably contributing; the earlier in the rev range they come on boost and the slower the revs build (I think your demo was in 5th), the more you notice it.  Driving at WOT through 1st, 2nd, 3rd etc you will probably never hear it as any shuffling starts and is over super quickly
    • oh they were with that motor, you need to remove the engine to change the spark plugs (don't have to, but it does make it easier)
    • I certainly fall into the annoyed camp, but glad to hear that if it's happening at low boost then I'm not likely going to blow a turbo and end up with metal shards in my oil. Just feels like it prevents me from really driving it without hesitation and "peak" performance. Wonder if it's the VCAM, it did an impressive job of shifting the torque curve and faster spool, but maybe now it's "too fast" and there's too much air for how open the throttle is.  Based on some other threads, will also do some reading on synchronizing the actuators. They are the default actuators that come on the Garrett's and I would think they would be set the same coming from the factory, but if the turbos don't actually work exactly the same way at the same time as previously mentioned, it would be worth making sure the actuators are actuating together properly
    • I went down this rabbit hole before, ended up sourcing a motor from the UK (I'm in Japan) which also didn't function correctly. With the original motor, I disassembled it and reassembled it and it works somewhat, sometimes. What I could deduce from all my screwing around is that there is calibration of the gears on the inside of the motor and two ramps on the main gear which activate switches that operate the motor and move the sunroof either to retract into the roof or tilt. Where I got stuck was that, it seemed in my case that one or both of the switches that are activated by the ramp on the gear did not always activate and thus the motor did not move, causing it to sometimes not retract or tilt (apologies, I've forgotten which way it didn't work.).  Of course this part is discontinued at Nissan now, it's the same part in the S15 but no other models. I also contacted the manufacturer of the component for schematics - forgot the name, they're based in Gifu - but they declined to share the information due to being bound by an NDA, sadly. Looking through my pictures now, it seems I last had a crack at this in 2022. See, I so kindly wrote "open" and "close" next to the switches. If you figure it out, please do tell me. Those little switches, with the red buttons may need to be replaced.
×
×
  • Create New...