Rb25 + Gt3076R & Mods, Made Low Power On Dyno Tune Why?

[LTHLRB]

i went the .82 exhaust on my rb25 and i love it. Lag is basically non existant through gear changes. full boost before 4,000rpm and strong power all the way to 7200. The .63 will be more responsive yes, but by how big a margin? Id much rather a fatter mid range and top end than be super responsive and flatten out from high mid to top. but all depends on what you want out of the setup.

[DriftSquad]

Looks like I may have a.82 rear by Monday fingers crossed!

[Guilt-Toy]

grats.

I picked up a cheap gt3082r with a HKS rear housing, the guy said it was a .73 a/r

[LTHLRB]

Looks like I may have a.82 rear by Monday fingers crossed!

Good choice pal. Excellent combo

[Manuel Kasko]

Driftsquad quick question

What pipes did you have to block when you pressure tested the system and did you test from the turbo intake or from the throttle body?

[ARTZ]

You stick a bung in the turbo intake and pump it full of air man

[DriftSquad]

You stick a bung in the turbo intake and pump it full of air man

What he said, my turbo inlet is 4 inch. So I went to bunnings got a 100mm PVC pipe end cap and about 3 inches of 100 mm pipe. Glued them together wile I was there ^^" ... Then drilled a hole and epoxied an air line hose fitting in the end cap. It was a tight fit into the front silicone but it goes on... Used a hose clamp!!! Lol... Then set the reg on the compressor to like 5 psi first. Plug it in and u can hear leaks right away.

No other blocking of anything

Edited February 15, 2014 by DriftSquad

[Guilt-Toy]

yeah its weird how that works.. you would think the air would just go through the valves and out the exhaust but you can get some pressure in there... i got 25psi into mine.

[Blackkers]

25 psi?? makes me think I should re do mine...

[scotty nm35]

You would be surprised how hard it is to stop the leaks at 40psi. lol.

[Manuel Kasko]

So I'm guessing you did it before the blowoff valve recirculation and cam cover thing.

[scotty nm35]

Remove the airbox/afm and plumb it into the rubber or silicone.

If using the rubber, it will stretch out under pressure, don't take it too far...

[scotty nm35]

Have you seen this 3037 housing? If it's to suit the same rear wheel it should be a good option...

http://www.skylinesaustralia.com/forums/topic/438741-fs-hks-3037s-rear-housing-amuse-r1-titan-bride-brix-ii-ikeya-formula-camber-arms-nismo-fpr/#entry7200931

[DriftSquad]

Yeah I have but at 390 I could almost buy brand new. Or I could just get a copy from kando and weld a vband to my exhaust.

[DriftSquad]

So I picked this garret .82 up today for a green back.

Should be installed by the end of the week.

[methz]

good deal

[LTHLRB]

get it hpc coated before you throw it on...

[DriftSquad]

Really? Y? I have a beenie

[LTHLRB]

Aparently beanies can lead to internal bearing damage if left on and raced with. No idea how. Hpc coating increases thermal efficiency in the turbo which leads to better response. Plus if you hpc coat it silver the chicks will flock... hard. But in all seriousness when I do go a steampipe manifold ill be hpc coating the manifold and turbo housing. Looks good, doesn't get that rusted look from heat, serves a purpose.

Edited February 19, 2014 by LTHLRB

[scotty nm35]

Aparently beanies can lead to internal bearing damage if left on and raced with. No idea how. Hpc coating increases thermal efficiency in the turbo which leads to better response. Plus if you hpc coat it silver the chicks will flock... hard. But in all seriousness when I do go a steampipe manifold ill be hpc coating the manifold and turbo housing. Looks good, doesn't get that rusted look from heat, serves a purpose.

I saw 900 degree manifold temps regularly at the track, all with a beanie on. The car has done 6 hard track days and daily driving for many years without issue.

As long as the CHRA is water cooled you should be fine.