How to Improve my GT3076R Response?
Easy fix = T3 Header + T3 .63 turbine housing and modify downpipe...
yes exhaust manifold or wastegate leak will cause slow spool
or even leaky dumpvalve...
Easy test - discontect EBC to see how the turbo spools on just the wastegate spring pressure.
regards
Sal
.
Evolving Member
Joined: Jun 2004
Posts: 371
Likes: 0
From: Australia
These are my opinions of those turbochargers and I think most of the problems revolve around firstly not having a twin scroll turbine housing and secondly that large (84) turbine trim size .
You can say what you like about twin scroll turbo systems , I think they do have function especially where low engine speed torque is needed .
Those Garrett UHP turbines . Same old same old , Big trim turbines are great for reducing turbine inlet pressure if the turbo size is marginal compared to the engines capacity . Where the engine size is a bit limited like in this instance with an around 500 Hp capacity turbo a big trim turbine is working against you IMO . If you look at some Mitsy TD06 turbines they tend to have more blades and at times smaller trims .
Actually the HKS GTII7460R is good to draw comparisons from because it uses a 60mm turbine in I think 69 trim and is twin scroll as well . Said to be a lot more responsive though these are an engine specific unit rather than a generic like a GT3076R .
IMO Garrett needs to look at the turbine trims with BB type GT30 and GT35 turbines , they reduced the turbine trims of their BB specific GT37 and GT40 turbines to 78T and I think its high time they did the same with the GT30 and GT35 turbines .
Generally peoples biggest ***** with these turbos is the bottom end not the top end and most of it can be sorted with slightly smaller trim turbines to make them react faster to increasing exhaust gas flow .
I've been nagging Garrett for years to give us the TR30R competition turbine which is the 60mm version of the BB GT28s 53.8mm NS111 turbine . Nine bladed , very open bladed and high tip width turbines that should be lighter than the aging GT30 UHP turbine .
Actually they could give us all the wheel options from the TR30R family because they were designed with power and response in mind . That 60mm 76T turbine with the 76mm 56T I think 5/5 bladed compressor wheel would be a real blast in GT3076R housings .
I'd really REALLY like JCavs take on this GT3076R TR30R issue .
Cheers A .
PS You can source a 52 compressor trim version of these GT3076R turbos which are essentially the same as the HKS GT3037"S" turbos . Not something thats economic to change in the 56T version but if the boost threshold is of any concern anything that brings a turbo on even a little faster is gold .
I put a lot of research into these HKS spec Garrett turbos a few years ago and have the part numbers for most cartridge and complete unit numbers .
52T cartridge 700177-5006 52T turbo 700382-10
56T cartridge 700177-5007 56T turbo 700382-12
Order ex Japan .
You can say what you like about twin scroll turbo systems , I think they do have function especially where low engine speed torque is needed .
Those Garrett UHP turbines . Same old same old , Big trim turbines are great for reducing turbine inlet pressure if the turbo size is marginal compared to the engines capacity . Where the engine size is a bit limited like in this instance with an around 500 Hp capacity turbo a big trim turbine is working against you IMO . If you look at some Mitsy TD06 turbines they tend to have more blades and at times smaller trims .
Actually the HKS GTII7460R is good to draw comparisons from because it uses a 60mm turbine in I think 69 trim and is twin scroll as well . Said to be a lot more responsive though these are an engine specific unit rather than a generic like a GT3076R .
IMO Garrett needs to look at the turbine trims with BB type GT30 and GT35 turbines , they reduced the turbine trims of their BB specific GT37 and GT40 turbines to 78T and I think its high time they did the same with the GT30 and GT35 turbines .
Generally peoples biggest ***** with these turbos is the bottom end not the top end and most of it can be sorted with slightly smaller trim turbines to make them react faster to increasing exhaust gas flow .
I've been nagging Garrett for years to give us the TR30R competition turbine which is the 60mm version of the BB GT28s 53.8mm NS111 turbine . Nine bladed , very open bladed and high tip width turbines that should be lighter than the aging GT30 UHP turbine .
Actually they could give us all the wheel options from the TR30R family because they were designed with power and response in mind . That 60mm 76T turbine with the 76mm 56T I think 5/5 bladed compressor wheel would be a real blast in GT3076R housings .
I'd really REALLY like JCavs take on this GT3076R TR30R issue .
Cheers A .
PS You can source a 52 compressor trim version of these GT3076R turbos which are essentially the same as the HKS GT3037"S" turbos . Not something thats economic to change in the 56T version but if the boost threshold is of any concern anything that brings a turbo on even a little faster is gold .
I put a lot of research into these HKS spec Garrett turbos a few years ago and have the part numbers for most cartridge and complete unit numbers .
52T cartridge 700177-5006 52T turbo 700382-10
56T cartridge 700177-5007 56T turbo 700382-12
Order ex Japan .
thats about right if youre in a 2.0. Im running a tomei 2.3 with a hta 3076 with the .82 hot side and i hit full boost @ 4 on pump gas, running e85 were gonna try to hit the same target but @ 35psi not 23psi.
Thread Starter
Evolved Member
Joined: Aug 2010
Posts: 1,426
Likes: 2
From: The Universe
These are my opinions of those turbochargers and I think most of the problems revolve around firstly not having a twin scroll turbine housing and secondly that large (84) turbine trim size .
You can say what you like about twin scroll turbo systems , I think they do have function especially where low engine speed torque is needed .
Those Garrett UHP turbines . Same old same old , Big trim turbines are great for reducing turbine inlet pressure if the turbo size is marginal compared to the engines capacity . Where the engine size is a bit limited like in this instance with an around 500 Hp capacity turbo a big trim turbine is working against you IMO . If you look at some Mitsy TD06 turbines they tend to have more blades and at times smaller trims .
Actually the HKS GTII7460R is good to draw comparisons from because it uses a 60mm turbine in I think 69 trim and is twin scroll as well . Said to be a lot more responsive though these are an engine specific unit rather than a generic like a GT3076R .
IMO Garrett needs to look at the turbine trims with BB type GT30 and GT35 turbines , they reduced the turbine trims of their BB specific GT37 and GT40 turbines to 78T and I think its high time they did the same with the GT30 and GT35 turbines .
Generally peoples biggest ***** with these turbos is the bottom end not the top end and most of it can be sorted with slightly smaller trim turbines to make them react faster to increasing exhaust gas flow .
I've been nagging Garrett for years to give us the TR30R competition turbine which is the 60mm version of the BB GT28s 53.8mm NS111 turbine . Nine bladed , very open bladed and high tip width turbines that should be lighter than the aging GT30 UHP turbine .
Actually they could give us all the wheel options from the TR30R family because they were designed with power and response in mind . That 60mm 76T turbine with the 76mm 56T I think 5/5 bladed compressor wheel would be a real blast in GT3076R housings .
I'd really REALLY like JCavs take on this GT3076R TR30R issue .
Cheers A .
PS You can source a 52 compressor trim version of these GT3076R turbos which are essentially the same as the HKS GT3037"S" turbos . Not something thats economic to change in the 56T version but if the boost threshold is of any concern anything that brings a turbo on even a little faster is gold .
I put a lot of research into these HKS spec Garrett turbos a few years ago and have the part numbers for most cartridge and complete unit numbers .
52T cartridge 700177-5006 52T turbo 700382-10
56T cartridge 700177-5007 56T turbo 700382-12
Order ex Japan .
You can say what you like about twin scroll turbo systems , I think they do have function especially where low engine speed torque is needed .
Those Garrett UHP turbines . Same old same old , Big trim turbines are great for reducing turbine inlet pressure if the turbo size is marginal compared to the engines capacity . Where the engine size is a bit limited like in this instance with an around 500 Hp capacity turbo a big trim turbine is working against you IMO . If you look at some Mitsy TD06 turbines they tend to have more blades and at times smaller trims .
Actually the HKS GTII7460R is good to draw comparisons from because it uses a 60mm turbine in I think 69 trim and is twin scroll as well . Said to be a lot more responsive though these are an engine specific unit rather than a generic like a GT3076R .
IMO Garrett needs to look at the turbine trims with BB type GT30 and GT35 turbines , they reduced the turbine trims of their BB specific GT37 and GT40 turbines to 78T and I think its high time they did the same with the GT30 and GT35 turbines .
Generally peoples biggest ***** with these turbos is the bottom end not the top end and most of it can be sorted with slightly smaller trim turbines to make them react faster to increasing exhaust gas flow .
I've been nagging Garrett for years to give us the TR30R competition turbine which is the 60mm version of the BB GT28s 53.8mm NS111 turbine . Nine bladed , very open bladed and high tip width turbines that should be lighter than the aging GT30 UHP turbine .
Actually they could give us all the wheel options from the TR30R family because they were designed with power and response in mind . That 60mm 76T turbine with the 76mm 56T I think 5/5 bladed compressor wheel would be a real blast in GT3076R housings .
I'd really REALLY like JCavs take on this GT3076R TR30R issue .
Cheers A .
PS You can source a 52 compressor trim version of these GT3076R turbos which are essentially the same as the HKS GT3037"S" turbos . Not something thats economic to change in the 56T version but if the boost threshold is of any concern anything that brings a turbo on even a little faster is gold .
I put a lot of research into these HKS spec Garrett turbos a few years ago and have the part numbers for most cartridge and complete unit numbers .
52T cartridge 700177-5006 52T turbo 700382-10
56T cartridge 700177-5007 56T turbo 700382-12
Order ex Japan .
Thread Starter
Evolved Member
Joined: Aug 2010
Posts: 1,426
Likes: 2
From: The Universe
Hi Sal, you mean i just switch of my ebc and try boosting the car?
Thread Starter
Evolved Member
Joined: Aug 2010
Posts: 1,426
Likes: 2
From: The Universe
Omg! I didnt manage to get my car tune today but have checked boost leak again and what we found is a small leak but eventually get bigger when the boost pressure reached 1.5 bar...
My car responded much better now...
The location is near the compressor outlet silicon hose to the ic pipe.
http://www.atpturbo.com/mm5/merchant...egory_Code=BCS
My car responded much better now...
The location is near the compressor outlet silicon hose to the ic pipe.
http://www.atpturbo.com/mm5/merchant...egory_Code=BCS
Evolved Member
Joined: Aug 2008
Posts: 1,387
Likes: 3
From: riverside, ca
there ya go james, boost leak duh da dah...(tell him what hes won johnny) a faster spooling car ...haha sounded like a game show host for a second haha...glad you got it figured out told ya it had to be a boost leak...ahha
Thread Starter
Evolved Member
Joined: Aug 2010
Posts: 1,426
Likes: 2
From: The Universe
Evolved Member
Joined: Aug 2008
Posts: 1,387
Likes: 3
From: riverside, ca
yea thats comin right off the compressor housing coupler, so no matter what its always losing air pressure.... reguardless of wot partial throttle or vacuum shifting...so get a new coupler and t bolt clamps unless you have them, dependin on how bad the leak,you could improve a couple 100 rpms sooner hittin full boost, maybe more.
how about a quick spool valve from sound performance. switch the hot side to a twinscroll and get the quick spool valve. Great increase in low end torque and still retain top end power. They have one on their drag evo. Give them a call.