Garrett .52 vs 15g, which should I keep?

bighornctd · 06-29-2012, 11:30 AM

I'm running a .52 A/R Garrett from a '89 740. It spools nice and pulls pretty good. I picked up a 15g from an 850 at Pull-a-part. Are there advantages to running one over the other? The 15g has the blow-off valve attached which is nice I suppose. Is performance substantially better? I've heard/read it's nearly the same.

Thanks.

530turbo · 07-01-2012, 01:18 PM

15g blow off sucks!!!!!!!!!!! I love my 15 but have never tried a 52 ar. I would use aftermarket blow off with 15g

ovlov760 · 07-01-2012, 04:13 PM

I had one of those T3's on my 760. I think the 15G is a better choice but then I experienced each turbo on different motors. The 15G spools faster and doesn't seem to run out of steam any sooner. It's not hard to find a bigger cold side for you T3 at the JY though....

Longhair · 07-01-2012, 04:28 PM

Quote:

Originally Posted by bighornctd

I'm running a .52 A/R Garrett from a '89 740. It spools nice and pulls pretty good. I picked up a 15g from an 850 at Pull-a-part. Are there advantages to running one over the other? The 15g has the blow-off valve attached which is nice I suppose. Is performance substantially better? I've heard/read it's nearly the same.

Thanks.

If it spools up quick and pulls good at low and mid rpm range and doesn't smoke why mess with it?

As far as I know I've read the Garretts are simpler to rebuild than the Mitsu.
The only reason I didn't use that turbo is because I didn't want to mess with installing a bov,The cbv on my 15g does just what it's supposed to do and my cars are mostly stock.

I have thought about buying a 15g for my 91 945 but the 13c is tight and spools up much quicker than my 94 with a 15g but there's not much left after 4k.

blkaplan · 07-02-2012, 06:11 PM

both are decent/ The 15g is a more mordern turbo.

The standard t3 has a horrible wastegate housing. The flat flange td04hl housing is a really nice design.

If you stay with the t3 get the ATP ultimatewaste gate or a cosworth housing.

MrBill · 07-02-2012, 07:00 PM

Quote:

Originally Posted by 530turbo

15g blow off sucks!!!!!!!!!!! I love my 15 but have never tried a 52 ar. I would use aftermarket blow off with 15g

I think this is the solution.
http://www.forgemotorsport.com/conte...oduct=FMDVK04S

stylngle2003 · 07-02-2012, 09:02 PM

hadn't seen that forge bit yet, pretty slick

BDKR · 07-02-2012, 09:12 PM

Quote:

Originally Posted by blkaplan

If you stay with the t3 get the ATP ultimatewaste gate or a cosworth housing.

+1!

redlinegw · 07-02-2012, 10:14 PM

I got one of those from Viva for my S60R, they are slick, I haven't installed it yet but they have nothing but good reviews.

PEGASUS 6 · 07-02-2012, 11:35 PM

Quote:

Originally Posted by MrBill

I think this is the solution.
http://www.forgemotorsport.com/conte...oduct=FMDVK04S

That is really nice looking, think it would work on 16T?

Lord_Athlon · 07-02-2012, 11:48 PM

530turbo · 07-03-2012, 12:36 PM

PIMPY

ryank · 07-03-2012, 03:48 PM

Quote:

Originally Posted by MrBill

I think this is the solution.
http://www.forgemotorsport.com/conte...oduct=FMDVK04S

Just curious if there's a benefit (other than bling) to running this over ipd's CBV?
http://www.ipdusa.com/products/4898/...r-bypass-valve

redlinegw · 07-03-2012, 03:51 PM

I think the major benefit is consistency because of it being aluminum and more precise.

06-29-2012, 11:30 AM	#1
bighornctd Board Member Join Date: Mar 2012 Location: Louisville, KY	Garrett .52 vs 15g, which should I keep? I'm running a .52 A/R Garrett from a '89 740. It spools nice and pulls pretty good. I picked up a 15g from an 850 at Pull-a-part. Are there advantages to running one over the other? The 15g has the blow-off valve attached which is nice I suppose. Is performance substantially better? I've heard/read it's nearly the same. Thanks. __________________ 1993 Volvo 245+T (garrett T3 for now), auto, b-cam 2006 XC90 2.5t 2006 Ram 2500 cummins, 6-speed manual, 4x4

07-01-2012, 04:13 PM	#3
ovlov760 Daddy. Coma. Join Date: Jun 2003 Location: Midwest - IL	I had one of those T3's on my 760. I think the 15G is a better choice but then I experienced each turbo on different motors. The 15G spools faster and doesn't seem to run out of steam any sooner. It's not hard to find a bigger cold side for you T3 at the JY though.... __________________ 1997 850 200k 1997 850 T5 125k ARD white tune ~~1988 760 Turbo~~ - Sold

07-02-2012, 06:11 PM	#5
blkaplan 50 shades of beige Join Date: Jul 2002 Location: Rockville, MD	both are decent/ The 15g is a more mordern turbo. The standard t3 has a horrible wastegate housing. The flat flange td04hl housing is a really nice design. If you stay with the t3 get the ATP ultimatewaste gate or a cosworth housing. __________________ www.BEIGEPOWER.com Kaplhenke Racing Facebook

07-02-2012, 09:02 PM	#7
stylngle2003 Board Member Join Date: Nov 2002 Location: Two Up, Two Down	hadn't seen that forge bit yet, pretty slick __________________ -Billy 1993 945ti "titebox" (DD) 1985 744GLE (perpetual +t project) 1996 Chevrolet Tahoe Vortec 2WD 1990 Mazda Miata track toy

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07-01-2012, 01:18 PM	#2
530turbo Board Member Join Date: Apr 2012 Location: redding,CA	15g blow off sucks!!!!!!!!!!! I love my 15 but have never tried a 52 ar. I would use aftermarket blow off with 15g

07-02-2012, 10:14 PM	#9
redlinegw Board Member Join Date: Nov 2010	I got one of those from Viva for my S60R, they are slick, I haven't installed it yet but they have nothing but good reviews.

07-03-2012, 12:36 PM	#12
530turbo Board Member Join Date: Apr 2012 Location: redding,CA	PIMPY

07-03-2012, 03:51 PM	#14
redlinegw Board Member Join Date: Nov 2010	I think the major benefit is consistency because of it being aluminum and more precise.