How Much Power can a NA 968 Motor Make?
12-19-2007, 11:33 PM
#16
Nordschleife Master
233 rwhp with a pca legal engine is a major work of art!!!!!! What doe you think the driveline loss is? The guy who runs the Dyno I go to says IRS has an 18%-20% loss.
191 is 88% of 217 so that's a 12% driveline loss on an '86 944 turbo with (at the time) no LSD. (not sure if that makes a difference)
No WAY IN HELL we are losing 18-20%.
12-20-2007, 04:02 AM
#18
Rennlist Member
You have to come to the dark side to get any real gains. Having said that, I know that Dave McGrath / Evil 944 has had something to do with a 944 n/a that spins to something stupid like 10k rpm. Ask him.
12-20-2007, 10:25 AM
#19
Drifting
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Russ, we plan to doing something in the next few months and will share results with everyone. As Damian stated, it will be a bunch of bolt-on and dyno tuning.
I do agree with your statement though, bolt on stuff is nice and all, but for an all out motor, you need to look at all the components. Unfortunately, the price starts creeping up very quickly. I know of a guy who could build you a 320hp NA motor which like you said, will rev like crazy, but it will also cost you upwards of $20K.
For most people its just too expensive and most of the gains would not be visible on the street where many of us drive. Kinda becomes hard to justify it for most.
Raj
I do agree with your statement though, bolt on stuff is nice and all, but for an all out motor, you need to look at all the components. Unfortunately, the price starts creeping up very quickly. I know of a guy who could build you a 320hp NA motor which like you said, will rev like crazy, but it will also cost you upwards of $20K.
For most people its just too expensive and most of the gains would not be visible on the street where many of us drive. Kinda becomes hard to justify it for most.
Raj
Haven't received it yet.
No doubt. Curious that.
12-20-2007, 10:26 AM
#20
Drifting
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12-20-2007, 10:30 AM
#21
Rennlist Member
You have the luxury to make some real hp in your turbo so I see it hard for you to justify it.
At the end of the day NA power bumps are maginal at best. I see people ranting and raving but its mostly hype. If only they could see what kind of performance bumps turbo's get.
Raj
12-20-2007, 08:04 PM
#22
Without fear of being bashed, I have seen 239.6hp on a dynocom dyno. No head work just bolt-ons. There is more to be had but real money has to be spent beyond that. A well devloped motor should be able of 250+ at the rear wheels. But the price may not be worth the reward.
12-20-2007, 08:57 PM
#23
Milledge uses 11% for estimated driveline loss. It's a little conservative, but seems to be right in line with what you're saying.
12-20-2007, 09:42 PM
#24
Rennlist Member
The guys I am talking with say that a Nascar truck with live axle looses like 13 to 15% and an irs looses more than a live axle with the additional joints. Porsche is always know for more hp than advertised. I guess the only real way to know is engine dyno followed by a chassis dyno
Rich, regardless that is a strong engine. I know a guy who balanced and blueprinted and is about 225-230 rwhp.
Mike
Rich, regardless that is a strong engine. I know a guy who balanced and blueprinted and is about 225-230 rwhp.
Mike
12-20-2007, 10:59 PM
#25
Mike,
That engine (233 rwhp) threw a rod at Pocono last May. The top end was salvageable. Current engine dyno'd at 221 rwhp. In fact, I'm hoping to dyno the car in another week or so to see how it held up to a full race season. The car has michael mount headers into a slightly larger-than-stock diameter exhaust and magnaflow muffler. Crank, pistons, rods, etc., are all stock. Cheapest additional 3 hp were realized from 4-hole airbox mod!
For 944 SuperCup this year the car weighed 3350lbs (w/driver) which was too heavy - 3050lbs is more like it (although for one of the vintage race specs, the 968 can weigh 2650, which should be a fast car).
That engine (233 rwhp) threw a rod at Pocono last May. The top end was salvageable. Current engine dyno'd at 221 rwhp. In fact, I'm hoping to dyno the car in another week or so to see how it held up to a full race season. The car has michael mount headers into a slightly larger-than-stock diameter exhaust and magnaflow muffler. Crank, pistons, rods, etc., are all stock. Cheapest additional 3 hp were realized from 4-hole airbox mod!
For 944 SuperCup this year the car weighed 3350lbs (w/driver) which was too heavy - 3050lbs is more like it (although for one of the vintage race specs, the 968 can weigh 2650, which should be a fast car).
12-21-2007, 09:13 AM
#26
Nordschleife Master
12-21-2007, 11:28 AM
#27
Rennlist Member
I am sure that is a much more accurate number.
Raj
01-05-2008, 10:59 PM
#30
Race Car
Perhaps he means air box mod and K&N?
Is the 247 hp figure at the rear wheels? All the dyno numbers I've seen quoted from Ninemeister were converted to hp @ the flywheel.
Is the 247 hp figure at the rear wheels? All the dyno numbers I've seen quoted from Ninemeister were converted to hp @ the flywheel.