Rb25 Gt3076R Turbine Housing Size

[R31Nismoid]

Yep, you're doomed. Tried and proven to be rubbish.

To OP: put a proper Garrett .82-IW rear on it and all your problems should be solved. You might also have leaks or otherwise as suggested, but at least you then know the housing isn't the issue (which they all are)

[AngryRB]

If you know what your doing you can try ramping up the boost with the AVCR, ive had the same lazy boost issues recently with my gtx3076, finally found the intake manifold gasket had been blown out , also wondering about the resonator if it has a restrictor inside like the old muffler had in it.

[GTScotT]

Yep, you're doomed. Tried and proven to be rubbish.

To OP: put a proper Garrett .82-IW rear on it and all your problems should be solved. You might also have leaks or otherwise as suggested, but at least you then know the housing isn't the issue (which they all are)

yepp this.

you need to get rid of that Sonic POS before you go any further.

genuine garrett .82 internal gate will be perfect. dont need external gate for your goals.

[GTScotT]

and....... i picked it again

[gts-t 32]

Thinks for your input guys much appreciated

[Mitcho_7]

I can't believe how restrictive that turbine housing is. Did they do any r&d or just slap it on thinking they'd sell like hot cakes to skyline owners without worrying about whether it actually works

[wolverine]

I still reckon there is another issue to be fixed so changing the turbine housing will be a winner in the long run but if you will still need to leak/smoke test the intake and review your exhaust for restriction.

[GTScotT]

there probably is a leak somewhere, yet the point is good luck trying to diagnose poor performance (once the would be leak is found) if that housing is still on it.

I think OP accepts that fact tho, so its fine. it will take some work to get it right, but hes on the right track now.

[86JAP]

Hey guys sorry to hijack, im new to the rb life, looking at buying a r33 rb25, gt3076r .82, highmount steampipe, 40mm ext gate, 880cc injectors, walbro pump and haltech platinum pro, claimed to make 306 rwkw on 14psi.

Does that sound right??

Thanks

Edited June 27, 2012 by 86JAP

[wolverine]

14psi......hmmm

the rest is feasible.

[Mitcho_7]

Does it run e85 or wmi?

If its just 98 the number is plausible on 18-20psi or a really happy hub dyno

Edited June 28, 2012 by Mitcho_7

[86JAP]

Awaiting more info in it, fairly sure its pump fuel, also pretty sure it uses standard inlet manifold as it has a blitz turnflow cooler, unsure of internal mods cam pistons ect. just wanted a rough idea if it possible dyno sheet is supplied for 306 but cant tel from pic what boost its on

[GTScotT]

lithium has made similar numbers on similar boost. i think 17psi makes 300 without stress and a good tune

300 on 14psi is probably a slightly happy dyno and more like 280kw on a more sensible one

still sounds the goods

[GotsWapan]

Would anyone be able to post what this genuine Garrett GT30 .82 IW rear housing looks like please for reference. Now that I know my MTQ housing is rubbish.

Edited June 28, 2012 by GotsWapan

[Rolls]

Internate gate is fine, figure out why it is laggy and not working, the fact that it isn't making 18psi until 5500 means the wastegate is flowing perfectly, if it was a wastegate issue you'd be boost spiking.

Do all the usual stuff like smoke test the intake, check the actuator isn't loose and the gate is sealing, drop exhaust, get the tune checked out etc etc.

edit: those housings get poor results, just do a search to see the guys before you and what they found, 0.63 or 0.82 housing will be a big upgrade, depends how much response you want.

Edited June 28, 2012 by Rolls

[Mitcho_7]

I believe something like this would be a better choice for the gt3076r

http://www.atpturbo.com/mm5/merchant.mvc?Screen=PROD&Store_Code=tp&Product_Code=ATP-HSG-037&Category_Code=

[STATUS]

Does it run e85 or wmi?

If its just 98 the number is plausible on 18-20psi or a really happy hub dyno

generally we see 280 @19psi so yeah 304 on 14psi is extremely unlikely.

Had another on on today, twin scroll dual tials and made 290rwkw @19psi neo motor. full boost around 3400-3500.

[Mitcho_7]

generally we see 280 @19psi so yeah 304 on 14psi is extremely unlikely.

Had another on on today, twin scroll dual tials and made 290rwkw @19psi neo motor. full boost around 3400-3500.

That sounds like it'd be awesome and is a good result for a car on 98, was it with a 6boost manifold?

Bigger cams or stock?

[Rolls]

generally we see 280 @19psi so yeah 304 on 14psi is extremely unlikely.

Had another on on today, twin scroll dual tials and made 290rwkw @19psi neo motor. full boost around 3400-3500.

could you screw much more boost into it on 98?

[GTScotT]

Would anyone be able to post what this genuine Garrett GT30 .82 IW rear housing looks like please for reference. Now that I know my MTQ housing is rubbish.

this is the one, shop around tho..

http://www.gcg.com.au/index.php?page=shop.product_details&flypage=flypage.tpl&product_id=588&category_id=29&option=com_virtuemart&Itemid=101