Vigo

Yeah, what so bad about GT3076R turbo?

RSGuy

iTrader: (12)

Actually, the GT3076R doesn't spool much faster than the GT35R so that just makes it kind of obsolete since the GT35R can make so much more power. I think that's David's reasoning behind his statement.

~fred

David Buschur

iTrader: (53)

It is my opinion that it is a turd. If you'd like a 3076 I'll gladly sell one to you to match to your combination of parts that you bought somewhere else or from Ebay even. For our loyal customers I'll sell you something that will kick the 3076 butt

Please, as always, buy what you feel is best for your combination, it's your money after all.

Vigo

How is the spool-up time compared to the stock turbo for the GT3076R? If I was going for 500whp on a Dynojet at maximum boost pressure and go into the tens in the quarter mile, I would go with the 20glt. Going with a GT3076R or 50 trim is just pointless and a waste of money for the amount of power gained compared to the 20glt. These three turbos are basically the same when it comes to maximum horsepower output and quarter mile potential.

20glt for the win when it comes to cost effectiveness and for stock like spool up time!

discopotato03

Getting a little OT David I know but I have noticed people like RC (Garrett) had good things to say about the GT3076R in 52 trim ie GT3037S 52T cartridge or Pn 700177-5006 .

I've always wondered about Garretts choice of the 56 trim size in their GT3076R and GT3582R . The GT3037 was available in 48/52/56 trims and surprisingly the 3582R only in 56 trim . I'd really like to know what JKav thinks a GT3582R in 52 or 50 trim would perform like (82mm GT40 or BCCW-18C comp family) . As he said if the comp load is reduced so is the turbine so its going to be more responsive to exhaust gas flow just like a 48 or 52T GT3037 compared to its 56T option right ?

Cheers Adrian .

PS : David very interested to know of any turbo of comparable power output with better response and less turbine inlet pressure than a GT3076R in 52T anyway .

David Buschur

iTrader: (53)

The green is going to have a very hard time making 500 whp on a Dynojet, so if 500 whp is your goal, I'd look to a different turbo.

discopotato, I know very little about all the numbers and trims they stick on turbo descriptions. When I need a turbo I call the guys who build our turbos (multiple shops) and ask what I need to do such and such. They give me a recommendation, we buy it and then we test it. If it works we use it, if not we buy another and report the results of the test so the next turbo can be adjusted for our use.

I don't really care what inside the turbo, I just don't care. What I care about is if I ask for a turbo that will make 20 psi on a 2 liter by 4,000 rpm that when I get it, it does in fact make 20 psi by 4,000 rpm. I also care that if I say with that spool up I need 500 whp that it will actually make 500 whp.

Case in point, this new GT35r. Robert called me, said he had a turbo he thought would work really well. Less back pressure, better low/mid range no losses up top. Asked if I would test it on my RS. He told me the specs on the wheel, I listened, did not write them down, didn't care. I care about results. The turbo came, we tested it and it performed just like he said it would. The turbo did have a surging problem, so as I said that made it not ideal. It was taken off and sent back to be modified.

dustin03

iTrader: (54)

hey dave I wouldlike to get a gt35 but with all the great results out of the fpgreen I am having a hard time picking one. what is the spool diffrence in the 2 turbos ? Also what do you belive the max HP the green will put out? Thanks for all the great testing you do. Dustin

David Buschur

iTrader: (53)

dustin, the difference in spool up isn't even comparable. The GT35r is laggy. If you want quick spooling the 35r is not for you. I've done three stock block, stock block cars with the Green that have made over 400 whp on our dyno. The turbo is capable of running 10's and makes 20 psi at 3500 rpm.

Frenchy4g63

Dave, did Robert at FP give you a time frame on when you should expect the new turbo with the ported shroud back?

As I understood it, when testing is done, hopefully pretty soon, that they will offer all of Garrett's turbo's with this new wheel design. Any idea on when to expect the rest of the lineup?

David Buschur

iTrader: (53)

We were suppose to ship him the turbo overnight and there was some confusion so it was shipped ground. He has the turbo now and is maching the housing.

My car, when it goes back together, will be changed quite a bit from the last time.

I am sticking to the HTA35R but have changed every other piece of the turbo kit in quest for even more power. I have maxed out the turbo with the turbine housing. I think I can make more power with a turbine housing change which regretably for now means I had to change the cast manifold to a header too. Robert is working on new turbine housing that will flow even more and will be out in the future.

discopotato03

Fair enough David , thanks for your thoughts . I'll be very keen to hear more about it when it lands and maybe even see some pics of the thing from the compressor side .

It will also be interesting to see how they went about port shrouding the thing but all in good time .

Thanks for your efforts , its good to see people thinking outside the square .

Cheers Adrian .

ItalianEvo

David,

I just come in now, at your nth advice and test,
and, first of all, I'd like to thank you for sharing all these info without getting back any benefit, if not a good name.

As I ported shroud my comp cover too, I'm just curious to know if you'll report any loss in spool up.

Bye.

discopotato03

Hi David , can you tell me if this HTA Turbo is externally the same size as a regular GT3582R please . Also any more test results available now ?

Cheers and thanks Adrian .

monies41

iTrader: (14)

Very awesome info thanks

David Buschur

iTrader: (53)

Externally it looks exactly the same.