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Gt3076r Specifications - Clarification Needed

evsr31

By evsr31,
in Engines & Forced Induction

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Aberax Grand Master

Aberax

Posted
Posted
what size rear is that with mate?
I just bought myself this a few weeks ago.

32160820069_large.jpg

32160820071_large.jpg

Some people i have been speaking to in the SA section say that this turbo is too big for a RB25, and that it is going to be real laggy. But i wont really know for a few weeks till i have it installed. That is the 0.82 rear housing i think, it has it stamped inside somewhere.

With that ^^

Haines Rising Star

Haines

Posted
Posted (edited)

Old mate its not a full turbo its just the housing

I believe its the .73 AVO recast nissan housing

I swapped it for the .82 external Grant

so its still the 3076r but now external gate

Edited by Haines
nIsMo86 Experienced

nIsMo86

Posted
Posted (edited)

Is this the twin scroll version that you guys have been using?

I previously had the 3037R which looks identical to the first pictured so called T04S at the start of the thread. It lasted 6 years running 17 or 22 psi and making 250-270atw before having any probs. It dropped a bearing. You guys were saying its crap at the start of this thread but i disagree. I had very good results although it does lag a bit which would be my only complaint. It hit full boost around 4-5k on an rb20 w/ext gate...which are renowned for the lag so it would prob come on alot sooner on a 25.

Anyways, i'm considering getting the 3076R instead of another 3037R due to the twin scroll factor but i'm still unsure. Would this turbo reliably handle 17psi daily and 22psi of boost on and off? Anyone have any experience with this turbo on an rb20? The results look good for rb25's.

Sorry to ask in an rb25 thread...just dont wanna start a new one.

Cheers.

Edited by nIsMo86
discopotato03 Grand Master

discopotato03

Posted
Posted

Well for a start the first one isn't a 3037R or 3037 anything . To be a "3037" you need to have a GT30 turbine and a GT37 compressor wheel .

The 7/14 bladed wheel is not a GT anything , from memory its either a T04S or a 76mm TB41 wheel .

The second one is what you could call a 3037"S" , I believe S is the designation HKS gave their spec Garrett turbos in the GT30 family with port shrouded comp housings and 76.2mm GT37 compressors .

nIsMo86 Experienced

nIsMo86

Posted
Posted
on a 20 22psi will be fine, wont be flowing quiet as much as a 25. i'm running myne at 22psi atm on a 25, loves it

Nice good to hear. Thanks for the feedback.

Well for a start the first one isn't a 3037R or 3037 anything . To be a "3037" you need to have a GT30 turbine and a GT37 compressor wheel .

The 7/14 bladed wheel is not a GT anything , from memory its either a T04S or a 76mm TB41 wheel .

The second one is what you could call a 3037"S" , I believe S is the designation HKS gave their spec Garrett turbos in the GT30 family with port shrouded comp housings and 76.2mm GT37 compressors .

My front housing looks identical to the turbo in the 1st pic and mine is a 3037R. Was just saying. Mine is a 6 year old turbo and looks different to the current 3037's. The turbine wheels are front 7 blade and rear 10 blade. I cant measure them as they are munched :)

Have any of you guys had any experiences with 3076R on a 20?

discopotato03 Grand Master

discopotato03

Posted
Posted

No that one two post above isn't it either , that thing is called a "GT2876R" because it uses a GT28 NS111 turbine and a 76mm 48 trim 7/14 bladed compressor .

The first one in the first post said 60mm by 55mm turbine so it wont be a 53.8mm GT28 turbine , those are the approximate dimensions of an 84 trim GT30 turbine .

According to my lists there are 24 Garrett and HKS spec units in the "GT30BB" family . For these there are only 9 cartridges so to make up those 24 the variations are in the housings .

A couple of years back I typed out most of the GT30 BB range and posted them on this board .

Cartridge wise there are only 3 "real" GT3076R's or you could call them GT3037's because in the real versions terms it means the same thing .

The most common is the largest compressor trim version or GT37 wheel family in 56T , less common is the GT37 52T version , and quite rare is the GT37 48T version . So all the same 76.2mm dia GT37 or BCI-18C wheels with 56/52/48 trim variations .

They all use the same ~ 60mm GT30 UHP 84 trim turbine in these "REAL" 3037/GT3076R turbos .

56T cartridge 700177-5007 , 52T cartridge 700177-5006 , pretty sure the 48T cartridge is 700177-5005 .

Complete units (minus turbine housings)

56T 700382-5012 - with Port shrouded compressor housing . 700382-5011 for with std comp housing inlet .

52T 700382-5010 - with PS housing . 700382-5009 without .

To be confirmed but 48T unit is said to be 700382-5008 and non PS comp housing only .

Not using the force , the 56T ones are easy to find and the 52T I own .

A .

nIsMo86 Experienced

nIsMo86

Posted
Posted

discopotato03...I'll post up my serial number off the garrett plate on my dead 3037R to compare to your list. I'm curious now to see if it matches anything. Maybe a certain workshop who did the work did a dodgy on the old owner telling him it was a 3037 cause thats how i've been led to believe it. I also have the receipt from this workshop.

Also i recently emailed garrett to price up a 3037R with my serial number and he said it was superceded to a new number. Will post up the new number also. Now the just gotta find the email. Thanks for the very indepth reply disco :P

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