What power is possable for 850s all round
#1
imitek
Thread Starter
What power is possable for 850s all round
Just so i get an idea the engine has a street port and t70 just wondering
Whats the max power these 850s can deliver at 100% i no combind its 56.666 cc a sec
But im looking for a hp is their a calculation im wondering why peope always upgrade to 1600 and 2000 it sounds like overkill
Say u want to acheve 450rwhp
Whats the max power these 850s can deliver at 100% i no combind its 56.666 cc a sec
But im looking for a hp is their a calculation im wondering why peope always upgrade to 1600 and 2000 it sounds like overkill
Say u want to acheve 450rwhp
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#9
imitek
Thread Starter
Thins is why i ask all you guys
Its running fine on idle with 850 primry I was just thinkin im not sure what pump im runnn but i think its the 255
Do you guys run duel pumps or inline wen goin to 2000s
Thanks
#10
imitek
Thread Starter
Yea just calculated the 255 pump can only deliver 4250cc min so if i wen with 1600 or 2000 injectors i might have to go duel pump
walbro sell a 400lph pump has any 1 used it ?
walbro sell a 400lph pump has any 1 used it ?
#12
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You can get 850 primaries to run fine as long as they are setup properly. Make sure you get the injectors cleaned by WitchHunter.com first and then use these settings in the PowerFC.
FR-PR %65.0 -0.04
FR-SC------- +0.00
RR-PR %65.0 -0.04
RR-SC------- +0.00
PR 850cc
SC 850cc
Most cars run fine after just using these settings but any decent tuner could adjust things further if you need more fine tuning.
Also, the machining is not that big of a deal. All you have to do is remove 1/8" of a inch of material off the top of the rail so that the injectors sit lower in the rail. I did this with a belt sander in 10 minutes. I once read on the forum that a guy did this with the sandpaper like material on the top a skateboard!
I ran 4x850's years ago and on stock twins the most boost I could safely tune for was 13psi and that was at around 80% duty cycle. I still run stock side-feed 850cc injectors now.
I haven't heard much about the new Walbro 400lph fuel pump but I run 850 primary/1600 secondaries and use the Aeromotive 340lph Stealth in-tank pump. Fuel pressure has been rock solid and I'm making 452whp.
FR-PR %65.0 -0.04
FR-SC------- +0.00
RR-PR %65.0 -0.04
RR-SC------- +0.00
PR 850cc
SC 850cc
Most cars run fine after just using these settings but any decent tuner could adjust things further if you need more fine tuning.
Also, the machining is not that big of a deal. All you have to do is remove 1/8" of a inch of material off the top of the rail so that the injectors sit lower in the rail. I did this with a belt sander in 10 minutes. I once read on the forum that a guy did this with the sandpaper like material on the top a skateboard!
I ran 4x850's years ago and on stock twins the most boost I could safely tune for was 13psi and that was at around 80% duty cycle. I still run stock side-feed 850cc injectors now.
I haven't heard much about the new Walbro 400lph fuel pump but I run 850 primary/1600 secondaries and use the Aeromotive 340lph Stealth in-tank pump. Fuel pressure has been rock solid and I'm making 452whp.
#14
imitek
Thread Starter
Thanks balljoint
Thanks m8 mice info you may have changed my mind might leave the primry 850 and upgrade 1600 sec
Also is the 1600 limmiting ur power in any way i mean if u wanted 500 whp would they hold up,
And will have to check the fuelpump proply and check if it is 255
And what psi boost u running at the moment and what turbo to get that power
Thanks m8 mice info you may have changed my mind might leave the primry 850 and upgrade 1600 sec
Also is the 1600 limmiting ur power in any way i mean if u wanted 500 whp would they hold up,
And will have to check the fuelpump proply and check if it is 255
And what psi boost u running at the moment and what turbo to get that power
#15
GorillaRaceEngineering.co
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I asked due to my tuner told me he can get 420 whp from 850s all round he the 1 that told me i can run 100%
Thins is why i ask all you guys
Its running fine on idle with 850 primry I was just thinkin im not sure what pump im runnn but i think its the 255
Do you guys run duel pumps or inline wen goin to 2000s
Thanks
Thins is why i ask all you guys
Its running fine on idle with 850 primry I was just thinkin im not sure what pump im runnn but i think its the 255
Do you guys run duel pumps or inline wen goin to 2000s
Thanks
-J
#17
GorillaRaceEngineering.co
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-J
#18
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Thanks balljoint
Thanks m8 mice info you may have changed my mind might leave the primry 850 and upgrade 1600 sec
Also is the 1600 limmiting ur power in any way i mean if u wanted 500 whp would they hold up,
And will have to check the fuelpump proply and check if it is 255
And what psi boost u running at the moment and what turbo to get that power
Thanks m8 mice info you may have changed my mind might leave the primry 850 and upgrade 1600 sec
Also is the 1600 limmiting ur power in any way i mean if u wanted 500 whp would they hold up,
And will have to check the fuelpump proply and check if it is 255
And what psi boost u running at the moment and what turbo to get that power
The Walbro 255 usually max's out at around 400whp. People used to run two Walbro 255's when they wre going for big power, but with new pumps like the Aeromotive Stealth 340 and Walbro 400 you should have enough flow out of the one pump to hit 500whp.
I run BNR stage 3's upgraded twin's non-sequentially at 21psi. Made 452whp. Except for a better intercooler (and a few other tricks ) I've pretty much maxed out the turbo's. I'm more then happy with the power already but I want to see how far I can go.
#19
imitek
Thread Starter
The 850/1600 injector combo has been proven good for 500whp with some making more than that. The Injector Dynamics ID2000 injectors have newer technology behind them and obviously flow more then the 1600's but the 1600's are cheaper and 850/1600 combo has been proven on high HP cars. So if you have the money for ID2000's then do that, but if not there's nothing wrong with 1600's.
The Walbro 255 usually max's out at around 400whp. People used to run two Walbro 255's when they wre going for big power, but with new pumps like the Aeromotive Stealth 340 and Walbro 400 you should have enough flow out of the one pump to hit 500whp.
I run BNR stage 3's upgraded twin's non-sequentially at 21psi. Made 452whp. Except for a better intercooler (and a few other tricks ) I've pretty much maxed out the turbo's. I'm more then happy with the power already but I want to see how far I can go.
The Walbro 255 usually max's out at around 400whp. People used to run two Walbro 255's when they wre going for big power, but with new pumps like the Aeromotive Stealth 340 and Walbro 400 you should have enough flow out of the one pump to hit 500whp.
I run BNR stage 3's upgraded twin's non-sequentially at 21psi. Made 452whp. Except for a better intercooler (and a few other tricks ) I've pretty much maxed out the turbo's. I'm more then happy with the power already but I want to see how far I can go.
What tips u running and the power u have i would be over joyed with your power
You running pump gas and no hidden nitro or meth injection
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