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Precision Billet Turbos

R32GTR/Iceland
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XRATED Veteran

XRATED

Posted
Posted

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

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SimonR32
SimonR32

The 6262 sillyness is never ending... New cams just got the most power and torque it's ever made

SimonR32
SimonR32
Mick_o
Mick_o

Dale is 100% correct its a well proven fact that smaller cams in RB's aid in response. Even going from a stock cam to a type b pon cam will cost you response. Been many track guys that have thrown the

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Girorostar Experienced

Girorostar

Posted
Posted

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...
GTScotT Grand Master

GTScotT

Posted
Posted

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.

XRATED Veteran

XRATED

Posted
Posted

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...
GTScotT Grand Master

GTScotT

Posted
Posted

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!

XRATED Veteran

XRATED

Posted
Posted

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...
kn6gtr Collaborator

kn6gtr

Posted
Posted

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...
Lithium Grand Master

Lithium

Posted
Posted

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

kn6gtr Collaborator

kn6gtr

Posted
Posted

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

Ryan1200 Proficient

Ryan1200

Posted
Posted

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...

kn6gtr Collaborator

kn6gtr

Posted
Posted

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

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