What turbo does familia gtr use and can you fit on gtx engine?

pointzer0 · 02-03-2011, 04:16 PM

Hi there,
just wondering if someone could tell me if i am able to fit a gtr turbo on my bpt engine? also where i could purchase the gtr manifold to replace my current one?

Many thanks

Cosmo Dude · 02-03-2011, 04:55 PM

GTR uses an IHI VJ23 and is a direct replacement for your VJ21. The GTR manifold does flow better then the GTX so is worth while if you can find one.
I'd ring round some engine importers and watch Rupewrechts' JDM page, they don't come up often.

project.r.racing · 02-03-2011, 04:58 PM

VJ23 (GTR) and VJ20 (GTX) flanges/exhaust manifolds are different. they are not interchangable unless you swap turbos also.

89sp1.8 · 03-03-2011, 12:21 AM

in addition when fitting vj23 and gtr manifold,the water and oil lines will need to be changed

Rupewrecht · 03-03-2011, 09:48 AM

What about dump pipe? I assume the turbo->dump pipe and dump pipe->exhaust is different as well?

Fosgate · 03-03-2011, 01:46 PM

Yes VJ23 uses different dump pipe to VJ20 actually the flange on VF23 exhaust housing is different to VJ20. Also if you install the VJ23 on GTX you will need to get GTR front engine mount as that mount has been specifically designed to clear the piping going to the turbo.
So not a simple bolt in upgrade.

323 dam · 13-08-2013, 01:56 PM

So if the vj 23 isn't a straight bolt on what turbo is? I believe that a gtx has a VJ 20? what flange type is that? as im looking at a T28 and not sure if it will be a simple change without having to do manifold?

derb · 13-08-2013, 02:01 PM

A replacement VJ20 is the only bolt on option, however you can use the VJ20 exhaust housing and mate it up with a VF10 or VF8 core and compressor housing. A T28 based turbo will not fit the GTX nor GTR manifolds.

TheMAN · 13-08-2013, 02:40 PM

Quote:

Originally Posted by Fosgate

Yes VJ23 uses different dump pipe to VJ20 actually the flange on VF23 exhaust housing is different to VJ20. Also if you install the VJ23 on GTX you will need to get GTR front engine mount as that mount has been specifically designed to clear the piping going to the turbo.
So not a simple bolt in upgrade.

I know this was an old post, but the mount in question on the GTR is the same as the GTX, the bracket that goes to the gearbox are different however!

323 dam · 14-08-2013, 02:26 PM

Thanks Derb, i will have to get a manifold made and purchase a bigger turbo.

project.r.racing · 14-08-2013, 02:34 PM

T25 and T28 manifolds for BP engines are available off the shelf. just make sure the one you order will fit between the head and radiator.

02-03-2011, 04:16 PM	#1
pointzer0 Junior Member Join Date: Jan 2011 Location: Bankstown Car: Mazda Astina SP 1990 Posts: 14	What turbo does familia gtr use and can you fit on gtx engine? Hi there, just wondering if someone could tell me if i am able to fit a gtr turbo on my bpt engine? also where i could purchase the gtr manifold to replace my current one? Many thanks

02-03-2011, 04:55 PM	#2
Cosmo Dude コスモ Join Date: Dec 2002 Location: Location: Vic Car: Mazda '95 Astina I4, '86 B2K and '10 3 MZR-CD Posts: 7,888 View Photos By: Cosmo Dude	GTR uses an IHI VJ23 and is a direct replacement for your VJ21. The GTR manifold does flow better then the GTX so is worth while if you can find one. I'd ring round some engine importers and watch Rupewrechts' JDM page, they don't come up often. __________________ My 'stina Hatch

02-03-2011, 04:58 PM	#3
project.r.racing Senior Member Join Date: Sep 2004 Location: n/a Car: n/a Posts: 10,929	VJ23 (GTR) and VJ20 (GTX) flanges/exhaust manifolds are different. they are not interchangable unless you swap turbos also. Last edited by project.r.racing; 02-03-2011 at 05:02 PM.

03-03-2011, 09:48 AM	#5
Rupewrecht Administrator Join Date: Mar 2002 Location: melb.vic.au Car: AZ-1, Astina Hardtop Turbo, BJ Protege, Beetle Posts: 16,525 View Photos By: Rupewrecht	What about dump pipe? I assume the turbo->dump pipe and dump pipe->exhaust is different as well? __________________ jdmparts.rupewrecht.com Sourcing your not-quite-overnight parts from Japan WRECHT--\|--SLOWTEGE--\|--BEETLE--\|--SUBSTITUTE--\|--AZ-1

13-08-2013, 01:56 PM	#7
323 dam Junior Member Join Date: Nov 2011 Location: Brisbane Car: 323 familia Posts: 6	What is a straight bolt on So if the vj 23 isn't a straight bolt on what turbo is? I believe that a gtx has a VJ 20? what flange type is that? as im looking at a T28 and not sure if it will be a simple change without having to do manifold?

03-03-2011, 12:21 AM	#4
89sp1.8 Senior Member Join Date: May 2005 Location: brisbane Car: bg astina Posts: 1,186	in addition when fitting vj23 and gtr manifold,the water and oil lines will need to be changed

03-03-2011, 01:46 PM	#6
Fosgate AstinaGT Regular Join Date: Dec 2002 Location: Sydney Australia Car: Mazda BG Familia GTR Posts: 259 View Photos By: Fosgate	Yes VJ23 uses different dump pipe to VJ20 actually the flange on VF23 exhaust housing is different to VJ20. Also if you install the VJ23 on GTX you will need to get GTR front engine mount as that mount has been specifically designed to clear the piping going to the turbo. So not a simple bolt in upgrade.

13-08-2013, 02:01 PM	#8
derb Senior Member Join Date: Oct 2008 Location: Brisbane Car: 1993 BG Astina GT-X Posts: 1,822 View Photos By: derb	A replacement VJ20 is the only bolt on option, however you can use the VJ20 exhaust housing and mate it up with a VF10 or VF8 core and compressor housing. A T28 based turbo will not fit the GTX nor GTR manifolds. __________________ 1993 BG Astina 'GT-X'

14-08-2013, 02:26 PM	#10
323 dam Junior Member Join Date: Nov 2011 Location: Brisbane Car: 323 familia Posts: 6	Thanks Derb, i will have to get a manifold made and purchase a bigger turbo.

14-08-2013, 02:34 PM	#11
project.r.racing Senior Member Join Date: Sep 2004 Location: n/a Car: n/a Posts: 10,929	T25 and T28 manifolds for BP engines are available off the shelf. just make sure the one you order will fit between the head and radiator.