2008 Z06 with Warhawk and ProCharger F-1C at EPP
12-05-2008, 02:41 PM
#47
I will be taking video, right now we're putting a slightly shorter blower belt on it, as the belt we had on there has stretched a little as they do while breaking in, and we need to tighten it up and we're at the tensioners limit. While we are at it we are swapping out the F-1C for a new F-1R that we have here at the shop. The R was going to go on my Camaro, but the C seems to have run out of steam on the Z06 at 15 psi, and just shy of 900 rwhp. We're going to see what the R does then we are going to try it with and without the air filter. Bob
12-05-2008, 04:43 PM
#48
Sounds good Bob...I can't wait to see your results with the F-1R. I know I ran out of steam with the F-1A I had on my 427 and ended up wiping out the impeller on the F-1A trying to spin it too fast to get more boost. So now I have a F-1R on my 427 but haven't got it back on the dyno yet. With a 7.25 crank pulley (SDCE setup) and 4 inch blower pulley with the F-1R I got 17.3 lbs of boost with the air filter on at 6800 rpms. I am curious to see what boost you get with the F-1R on your setup.
12-05-2008, 05:27 PM
#50
The F-1R put us a little closer to our goal. This car is making 540 ft lbs of torque at the rear tires (the blue line on the graph) at just 2400 rpm! This is pretty surprising considering the camshaft that we are using, and the Beck sheetmetal intake manifold. Max rwhp (the red line on the graph) so far is 893 with 18 degrees of timing. Inlet air temps have been fairly cool, the hottest it has gone to is 115 degrees. We are using 93 octane fuel with a can of Torco octane booster. The green line on the graph is the boost, and it peaks out at roughly 5300 at 16.8 as the blower belt is slipping. The black line on the graph is the air/fuel ratio, and as can be seen, it gets richer and richer as the rpm climbs, just like we want it to be.
The next step will more than likely be switching over to a cog drive.
12-06-2008, 02:47 AM
#54
Ricky, take a look at where it is making the 893 rwhp. It is at about 5300. This engine was built to rev easily to 7000+ rpm. If the blower belt had not started slipping this engine would of crested 1000 rwhp quite easily.
We are running an eight rib.
We spent a lot of time on the chassis dyno getting the part throttle tuning nailed down. The engine now has 44 miles on it, all on the dyno. This consisted of a lot of varying rpm driving time, which helps to break in the rings. Bob
We are running an eight rib.
We spent a lot of time on the chassis dyno getting the part throttle tuning nailed down. The engine now has 44 miles on it, all on the dyno. This consisted of a lot of varying rpm driving time, which helps to break in the rings. Bob
Last edited by Exotic Performance Plus; 12-06-2008 at 02:55 AM.
12-06-2008, 07:34 AM
#56
We're thinking of trying the ATI Performance Products sprag drive, which is what was used on Jesse Gese's Corvette above. This is the only way that I can see getting a cog drive to work on a stick car.
http://www.atiautomotive.com/links/p...Widescreen.wmv video of sprag
Bob
Last edited by Exotic Performance Plus; 12-06-2008 at 08:15 AM.
12-06-2008, 08:19 AM
#57
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[QUOTE=Exotic Performance Plus;10609330]Ricky, take a look at where it is making the 893 rwhp. It is at about 5300. This engine was built to rev easily to 7000+ rpm. If the blower belt had not started slipping this engine would of crested 1000 rwhp quite easily.
5300 is about where my car was making 921 rwhp but jordans car makes more torque down low and i am sure his bigger cubic inch is helping tons.My car didnt make anymore power higher to do the afr 205 heads and the baby cam.Jordans car will be a monster.I am guessing hooking that 500+ at just 2400rpm is going to be a challenge.
5300 is about where my car was making 921 rwhp but jordans car makes more torque down low and i am sure his bigger cubic inch is helping tons.My car didnt make anymore power higher to do the afr 205 heads and the baby cam.Jordans car will be a monster.I am guessing hooking that 500+ at just 2400rpm is going to be a challenge.
