How much HP from Porting FP Red
You can rev higher a little safer but it still comes down to whether it will make power up there or not. No reason to go to 8500 if it dies off up top. Springs are more about the duration and lift than overall rpm range. The stock ones are good on stock cams and S1s to 8300, but they dont last forever at that level and anything bigger requires springs.
Mikey
Did anyone come up with a guess on whp difference between a Ported and Non-Ported Turbo? I'm curious if the numbers are negligible or measurable. I had my FP Black ported, but kind of curious.
Is it possible that the larger wheeled stock appearing turbos such as The FP Red and Black would benefit more from proper turbine housing porting than would the smaller wheeled versions such as a stock IX turbo, or an Old School Green?
I would think that since the 10.5 housing as cast is fairly restrictive in the turbine inlet and outlet areas. For example, even the relatively small diameter turbine wheel exducer on my Old School Green was shrouded by the casting of the turbine outlet area of the 10.5 turbine housing.
I imagine that the Red and Black which both are configured with a larger diameter turbine wheel featuring a relatively large diameter exducer suffer more from the shrouding of the casting in the turbine outlet area. Thus, they may benefit more from proper porting of the turbine outlet area than a turbo with a smaller exducer would.
So, by porting the outlet area of the 10.5 housing on a Red or a Black turbo you would be lowering outlet pressure to a greater extent than on a turbo with a smaller turbine exducer. This would iimprove the pressure differential between the turbine inlet and turbine outlet more on the turbine with a larger exducer diameter than it would on the turbine wheel with a smaller exducer diameter.
What I am getting at is that it might well be easier for R/T Ernie to extract more power from porting a Red or a Black than it would be for him to get it out of a stock IX turbo. On second thought, maybe his chances for getting 15-25 HP out of the Red are not that far fetched after all.
Or, is Sparky, once again, barking up the wrong tree?
I would think that since the 10.5 housing as cast is fairly restrictive in the turbine inlet and outlet areas. For example, even the relatively small diameter turbine wheel exducer on my Old School Green was shrouded by the casting of the turbine outlet area of the 10.5 turbine housing.
I imagine that the Red and Black which both are configured with a larger diameter turbine wheel featuring a relatively large diameter exducer suffer more from the shrouding of the casting in the turbine outlet area. Thus, they may benefit more from proper porting of the turbine outlet area than a turbo with a smaller exducer would.
So, by porting the outlet area of the 10.5 housing on a Red or a Black turbo you would be lowering outlet pressure to a greater extent than on a turbo with a smaller turbine exducer. This would iimprove the pressure differential between the turbine inlet and turbine outlet more on the turbine with a larger exducer diameter than it would on the turbine wheel with a smaller exducer diameter.
What I am getting at is that it might well be easier for R/T Ernie to extract more power from porting a Red or a Black than it would be for him to get it out of a stock IX turbo. On second thought, maybe his chances for getting 15-25 HP out of the Red are not that far fetched after all.
Or, is Sparky, once again, barking up the wrong tree?
Last edited by sparky; Feb 23, 2010 at 02:30 PM.
It was just a quick fix because of a broken rocker that destroyed the old cams (S1's) and me not having time to do do the springs before a dyno day
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I dont know i called fp and robert told me sometimes u lose power and spool he said if it's not broken don't fix it i don't think your gonna make 10 whp or more..Only way is to test it but if i was u i would leave it cars running great maybe to a ported exhaust manifold instead for the 110 whp...
ving higher
I'd take this advice with a grain of salt. If this were true then why does FP offer an in-house turbine housing porting option on their turbos? Originally FP merely gasket matched the turbine inlet together with a shallow throat job. Subsequently, due to popular interest, they improved their turbine housing porting offerings to include deeper inlet porting as well as outlet area contouring. So, why, if it is not beneficial, are they themselves fixing it if it ain't actually broken?
Last edited by sparky; Feb 23, 2010 at 08:22 PM.
.... i called fp and robert told me sometimes u lose power and spool he said if it's not broken don't fix it.....
I think Robert will even start designing his own castings soon, and trust me it will be larger that a 10.5. Thats why I think there is a lot of power to gain from the hotside as long as you have the compressor to flow the amount of air. I don't think a massive port job will benefit a stock turbo near as much as a Red or Black.
Here is a post of the new 10.8 cast that was just designed. https://www.evolutionm.net/forums/ev...sides-now.html
Yes, you will lose spool just like with everything else that you upgrade "larger"... is there a point that things are to large? Yes there is. There needs to be a happy medium and the 10.5 housing is what destroys power. If you look at 90% of all FP Red and Black dynos the tq hits a solid wall anywhere between 6-7k and the turbo begins to fall on its face! I'll post up a few graphs below for eye candy/comparison...
Some people say the tq falls off because of the compressor wheel running outside of its efficiency. I call BS. All of these graphs below are within the efficiency rating of the turbo except for one (AWD FP Black). Look through all the graphs and watch were the tq starts to fall hard. When the tq falls off, well so does hp in most cases. I think the reason behind this is the small 10.5 housing and I think that there is a fix but I have not tested it yet. Enjoy the graphs below.
1) FP Red 400hp/376tq. Well within the efficiency of the compressor and boost holds solid... So what is the reason for the tq falling off like a rock at 6k? I think the 10.5 housing. https://www.evolutionm.net/forums/ev...sh-racing.html
2) FP Red 520hp/406tq Still within the efficiency level. Only 31psi... tq falls off hard at 7k https://www.evolutionm.net/forums/ev...lbs-520hp.html
3) FP Red 521hp/436tq. Still within the efficiency level. Tq falls off at 6k. https://www.evolutionm.net/forums/ev...s-v5-omfg.html
4) FP Red 535hp/438tq. Once again still within the efficiency of the compressor. Tq falls off really hard at 7k. https://www.evolutionm.net/forums/ev...red-535hp.html
5) FP Black 490hp/380tq. WELL within the efficiency of the 82mm compressor. Yet tq still falls off hard between 6.5-7k. Look at the last graph on the first post. https://www.evolutionm.net/forums/ev...lack-pump.html
6) FP Black 593hp/845tq. Still within the efficiency of the compressor. Tq falls hard at 6.5K https://www.evolutionm.net/forums/ev...y-results.html
7) FP Black 719hp/631tq. Starting to exhaust the compressor... However the tq still falls rock bottom at 6.5k https://www.evolutionm.net/forums/ev...-fp-black.html
See a pattern yet? If anyone doesn't believe the hotside is a problem, then you are fooling yourself. I don't know about everyone else but I would not mind losing 200rpms of spool to gain 25+ hp out the top that I think is possible on these larger stock appearing turbos... Now for a discussion where we are all going to see things differently. Sorry for a godly long post...
Mikey
Last edited by BLKCarbonEVO; Feb 24, 2010 at 03:08 PM.
I'll be keeping everyone posted. I think having a currently unported red is really affecting my topend power. I may be wrong but I'll admit to it if I am 
Thanks for the support.
Mikey
Thanks for the support.Mikey
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I just talked to aniel from fp..and he told me from porting u might get 10 whp only when your trying to max out and squeeze out every single whp out of it with maxed out boost..
As far as that 10.8 hotside goodluck ordering it and putting it on cause you have to cut the turbo housing to make it fit not worth it better off getting your gsc cams..lol.