First off to start I know there has been tons of discussion of Turbo upgrades, from upgrading the stock greddy with a 20G or a 57 Trim Wheel, to the BNR 60-1 Upgrade to the MM GT3071R. The thing about the 3071R is we don't really know the details of the upgrade(ie: Modifications made to the turbo for it to fit, A/R Sizing and such) and from what I gather he no longer offers it. I came across this turbo while browsing ATP Turbo's site and I was curious if this is possibly a good fit for a bolt on upgrade.

Here are the specs:
Link:
http://www.atpturbo.com/mm5/merchant...egory_Code=GRT



So what do you guys think?
Any insight would be great!

 

You are still going to have to modify the turbine inlet flange.

We are working on a Greddy hybrid upgrade; bolt in, water cooled, billet compressor wheel, bigger turbine wheel...

 

I thought the Greddy Manifold was a T25 flange? Why would it have to be modified?

 

looks like you can order it with a 2.75in inlet.... interesting find Kyle



... and it does come with a t25 flange

 

interesting..

 

good input J

 

The 2.75" inlet is the compressor housing, Turblown mentioned a modification to the Turbine housing

 

yes I know, I was just stating that.

 

Oh ok... Lol

 

Oh for Pete's sake finish it already!

 

any plans for replacing the cast manfiold?

 

I came accross this a while and almost bumped some old threads on the subject for some feedback but I figured the "experts" would jump in and start fighting and just confuse the hell out of me so I just decided to go another route

 

He has a low mount manifold, I'm not sure if it is cast or not.

 

I should have specified. The question was for Turblown

 

some one here long time ago, they use the same greddy manifold, but he jsut made teh extension to the top. so you jsut need to get a new downpipe and discharge..it looks good though because he used the GT25 , somethign like that
steven

 

By he, I meant Turblown. Sorry for the confusion.

 

a bunch of people paid in advance and got strung along for 2 - 3 years, then the last couple got ripped off

what more detail do you need?

 

I'm aware of that whole situation, that's not what I'm referring to and it's irrelevant to this thread.

The details I was referring to were the Turbo Specs and the modifications made to the Turbo so it would physically fit in the stock Greddy location.

I was hoping to start a discussion that would lead to this information becoming readily available for all of us and to give us the option of using a GT3071R or even GT3076R with the Greddy kit. Basically we need to know the housing sizes that would physically fit, this turbo seems like a good option to me and sounds like it should fit.

Can anyone offer any insight as to why it wouldn't? Turblown mentioned a modification to the Turbine inlet would be required but why? It's a T25 Flange.

Also, can anyone comment on the AR sizing and the power potential of this particular turbo combination?

 

You have that backwards the T25 Flange is the inlet for the Turbine/hot side of the turbo, the compressor/cold side has a 2.75" intake, modifying or making a new section of piping to adapt it to the rest of the Greddy piping is the least of my worries, I'm more concerned with whether or not the turbo will physically fit in the Greddy location and also if the housing sizes will offer good spool characteristics and about a 325-350rwhp capability

 

Duh, nevermind. I have been reading so much turbo **** lately my brain is mush

 

Not really something we're interested in doing.

MM had to add a flange to space out the turbo fitment reasons.

 

I think that compressor is a little better than the stock greddy but will still be too small .

The ideal compressor wheel for the renesis for anything below 350whp is the 60-1 wheel (59mm inducer/76mm exducer) used in the BNR upgrade . The fact that nobody has made that power is more to do with the lack of understanding of the issues (or the unwillingness to deal with them) than anything else.

 

well that's your opinion and I have mine. You brought the subject up and it's just as relevant as his whole kit as far as I'm concerned

Oh, and next time try to search because there's no point in this thread that couldn't have been better served by bumping the one that already exists:

https://www.rx8club.com/series-i-major-horsepower-upgrades-93/question-about-mm-greddy-turbo-upgrade-162615/

he basically welded a spacer to the turbine housing, the compressor housing will be too close or hit the Greddy exhaust manifold otherwise as he also put an insulation shield between the manifold and turbo. You can see it more clearly here:







.

 

https://www.rx8club.com/series-i-major-horsepower-upgrades-93/adapting-gt30r-gt35r-greddy-flanges-105690/

https://www.rx8club.com/showpost.php...73&postcount=2

http://www.s2ki.com/s2000/topic/7051...o-kit-upgrade/

http://www.s2ki.com/s2000/topic/9003...-confirmation/


not sure if there is enough room for this external WG housing?




http://www.atpturbo.com/mm5/merchant...egory_Code=GTH



.

 

LOL I know how you feel.

Thanks I see that now.

I wouldn't say it's just a little better than the stock Greddy, overall I think it's a much better option, although I do agree the 60-1 Wheel is probably an even better option.

It's not like I'm trying to promote his kit in any way just discussing the 3071R as an option, I don't agree with his business practices which is why I'm discussing this here and not contacting MM about building me a kit.

I did search I must have missed that thread, Thanks for the info.

Again, thanks for the info, it's much appreciated.

There's a lot of great stuff in that thread on the S2K board still going over everything there.

I saw that External Wastegate housing on ATP Turbo but kind of just wrote it off as I didn't think there was anywhere close to enough room to mount a External WG in that position. It looks pretty close though, possibly with a low profile wastegate, but without actually mounting it up who knows.