Headgames ported my HTA35R you must see it!
Dec 20, 2007, 04:33 PM
#46
there have been more amazing cyl heads born on that bench than anywhere else ive ever been. Ive grinded on a bunch of my personal projects over there, and cant even come sort of close to this guy, hes soo good. never seen anyone take metal away so well, its really badass. if AMS stocks these on the shelf with no wait, thats a deal
thats ridiculous, it doesnt make any sense
unless "killed" was a good thing
awww youre so sweet, good thing all your friends cant read, makes me look good!! (j/k) i dont think porting the compressor cover is a bad thing at all, I just dont expect it to have gains. weve done so much stupid things to compressor housings, they never make much of a difference.... that turbine housing on the other hand, youre gonna be sorry you showed me these pics, i got a box of housings for us to work on 
i hope you dont hate me, but i got so much cast iron for us now haha
wtf is that?? a p trim turbine with an 7 blade 66-67mm compressor?
i feel that porting the turbine housing is very beneficial, particularly if using a tubular manifold.
thats ridiculous, it doesnt make any sense
unless "killed" was a good thing i hope you dont hate me, but i got so much cast iron for us now hahai feel that porting the turbine housing is very beneficial, particularly if using a tubular manifold.
Last edited by Geoff Raicer; Dec 20, 2007 at 04:35 PM.
Dec 20, 2007, 04:54 PM
#48
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[QUOTE=Full-Race Geoff;5077628]
that turbine housing on the other hand, youre gonna be sorry you showed me these pics, i got a box of housings for us to work on i hope you dont hate me, but i got so much cast iron for us now haha
Forget every nice thing I ever said about you...
that turbine housing on the other hand, youre gonna be sorry you showed me these pics, i got a box of housings for us to work on
i hope you dont hate me, but i got so much cast iron for us now hahaForget every nice thing I ever said about you...
Dec 20, 2007, 07:16 PM
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I also think the turbine housing is the place you're more likely to get results . I think it stands to reason because the exhaust gasses being really hot and at much greater velocity you stand to gain more by reducing restrictions where possible - gvie it the best shot at the turbine so to speak .
I always though that if you can at least smooth the cast finish inside a turbine housing you slightly reduce its surface area (heat transfer) and possibly reduce the depth of the boundry layer as exhaust gas flows through it .
I don't think I've ever seen major mods to the volute or outlet of a compressor housing achieve anything breathtaking . A little smoothing probably wouldn't do any harm and and with sharp edges inside you could take any burrs off with a bit of emery paper .
We have a sort of "modified" GT3582R as an OEM on a 4 L DOHC 24V Ford 6 here in Australia , basically it uses a T3 flanged 1.06 IW GT35 turbine housing and of all things a non port shrouded T04E 0.50 A/R compressor housing (I think 2.75" in/2" out) . The engines seem to run alright though on low boost (5 psi) and crank out ~ 240 Kw . GCG Turbos over here sell a Garrett factory comp housing thats a 0.70 A/R and suits the hybrid turbos T04E backplate/adapter ring and the 82mm Gt40 compressor . Its supposed to be some wacky T04S housing with the same sized 2.75"/2" bosses . Anyhow it goes bolt and somehow almost mimics what the more normal T04S housing does . I don't know how - maybe soft state of tune .
I think if you really want more from a compressor housing you need a larger A/R or go up a family in size .
There may be something to be learnt by looking at the "HTA" compressor wheels native housing , for example with Garrett they used their 76mm T04S compressors in obviously T04S housings . I'm not sure but I wonder sometimes if the higher blade count (7/14 vs 6/12) makes a compressor work better at times with large family comp housings - more blades more paddles ?
Should mention Garetts GT4088R here , late mid trim 7/14 blade compressor in a large but not huge 0.72 A/R GT40 comp housing , don't they use a 2.5" outlet boss like the T04S housing does ?
Before I go I noticed the inlet boss of your comp housing in the first shot has an insert inside it , is this a retro HKS GT3037 type thing or is it done because the "HTA" compressor may be dimensionally slightly smaller than the GT35R's original wheel - filler piece ?
To all have a happy and safe time over the festive season .
Cheers A .
I always though that if you can at least smooth the cast finish inside a turbine housing you slightly reduce its surface area (heat transfer) and possibly reduce the depth of the boundry layer as exhaust gas flows through it .
I don't think I've ever seen major mods to the volute or outlet of a compressor housing achieve anything breathtaking . A little smoothing probably wouldn't do any harm and and with sharp edges inside you could take any burrs off with a bit of emery paper .
We have a sort of "modified" GT3582R as an OEM on a 4 L DOHC 24V Ford 6 here in Australia , basically it uses a T3 flanged 1.06 IW GT35 turbine housing and of all things a non port shrouded T04E 0.50 A/R compressor housing (I think 2.75" in/2" out) . The engines seem to run alright though on low boost (5 psi) and crank out ~ 240 Kw . GCG Turbos over here sell a Garrett factory comp housing thats a 0.70 A/R and suits the hybrid turbos T04E backplate/adapter ring and the 82mm Gt40 compressor . Its supposed to be some wacky T04S housing with the same sized 2.75"/2" bosses . Anyhow it goes bolt and somehow almost mimics what the more normal T04S housing does . I don't know how - maybe soft state of tune .
I think if you really want more from a compressor housing you need a larger A/R or go up a family in size .
There may be something to be learnt by looking at the "HTA" compressor wheels native housing , for example with Garrett they used their 76mm T04S compressors in obviously T04S housings . I'm not sure but I wonder sometimes if the higher blade count (7/14 vs 6/12) makes a compressor work better at times with large family comp housings - more blades more paddles ?
Should mention Garetts GT4088R here , late mid trim 7/14 blade compressor in a large but not huge 0.72 A/R GT40 comp housing , don't they use a 2.5" outlet boss like the T04S housing does ?
Before I go I noticed the inlet boss of your comp housing in the first shot has an insert inside it , is this a retro HKS GT3037 type thing or is it done because the "HTA" compressor may be dimensionally slightly smaller than the GT35R's original wheel - filler piece ?
To all have a happy and safe time over the festive season .
Cheers A .
Dec 21, 2007, 10:36 AM
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Dude, I didn't reply to your comment, as I've took your advise and asked Force Performance why?
Ok, I've just got of the phone with Robert Yang from Force Performance, the legendary man which designed and making with he's hands the legendary
Evogreen and the HTA35R Turbos, and that's what Robert Yang told me:
"No downside doing that, no way you killed your Turbo, you should have some improvement"
I was discussing with Robert the potential benefit of porting, and he believe that if I've upgraded everything around (cams, head, etc. ) that should be one of the last upgrades to push a bit extra, how much extra? That's a good question, so I will let you know...
Ok, I've just got of the phone with Robert Yang from Force Performance, the legendary man which designed and making with he's hands the legendary
Evogreen and the HTA35R Turbos, and that's what Robert Yang told me:
"No downside doing that, no way you killed your Turbo, you should have some improvement"
I was discussing with Robert the potential benefit of porting, and he believe that if I've upgraded everything around (cams, head, etc. ) that should be one of the last upgrades to push a bit extra, how much extra? That's a good question, so I will let you know...
Haha you just owned warp9
