Kinetic Racing Engines

[Shoo]

Originally Posted by Cobra #3170

I have had Kinetic build 4 different engines for me over the past 15 years, two with carbs and 2 with Fuel injection, all these engines were absolutely excellent. These guys really know their stuff, they do not do high volume low cost engines, they do build high quality engines that live and make great horsepower. I regularly rev my 498 CID FE to 7500 rpm and occasionally to 7800 and have had absolutely no issues.

Thank you for sharing your experience. Based on the above I can only conclude that there is nothing inherently wrong with fuel injected FE's. The key seems to be that "guys really know their stuff".

Originally Posted by Cobra #3170

I know you will see some big HP numbers posted here and other places but having seen some of these engines with big numbers run I have good reason to doubt the numbers. The biggest problem I have had with my Kinetic engines over the years was hooking them up! I would not go to any other builder for my next engine.

May I ask what kind hp and torque are you getting? Are you running pump or race gas?

I saw a couple of videos on Youtube of what I think is your car. All I can say is respect to both the car and the driver.

[Cobra #3170]

Originally Posted by Shoo

Thank you for sharing your experience. Based on the above I can only conclude that there is nothing inherently wrong with fuel injected FE's. The key seems to be that "guys really know their stuff".



May I ask what kind hp and torque are you getting? Are you running pump or race gas?

I saw a couple of videos on Youtube of what I think is your car. All I can say is respect to both the car and the driver.

Horse power @ Flywheel 806@ 7600 torque 652 @5500 this was on a Superflow dyno that was calibrated before running and with a new load cell. It also repeated on a number of different pulls so I am very confident in the numbers. We got these numbers with the car exhaust system, we also tried an 1150 Dominator and it made 819@7600. I can't deal with the stumbles that inevitably come with carbs at high g loading. This thing makes just short of 600 lb/ft and 450 hp @ 4000 rpm so it has a broad power band given the fairly radical cam.

EFI The car uses a F.A.S.T. system with a Wilson 1600 CFM throttle body and Alpha N program. I actually program it for what ever my MAP sensor reads when I run it at different altitudes and barometric pressures but the new XFI system does that automatically. I can log air fuel ratios because it has a wide band sensor but cannot use a closed loop approach because of cam overlap. If you will notice from the video the engine pulls cleanly from 2500 RPM in the slow autox corner and it never stumbles even though it is cornering at 1.6 g's in the video. When I ran a carb (a highly modified Dominator) it used to die under hard stops and run unevenly under high cornering loads so I really like the fuel injection. It always starts when hot or cold because you can program everything from a lap top including acceleration enrichment and temperature compensation. I have run many different combinations of carbs over the years including duel 4 short bowls, duel 4 center pivots mounted side ways, duel 500 cfm center pivot 2 barrels and single 4's of 750, 850, 900 and 1150 cfm.
I would never go back from fuel injection unless it was on a street or drag race car that would never be asked to handle high g cornering or stops.

The engine is on race gas and is 14.7 to 1 and has about 29 d. advance at 6500 which says a lot about the cylinder heads.

[Shoo]

Thank you #3170. You have cleared up many key issues in my mind.

[gsharapa]

Cobra #3170

Awesome Cobra and your driving ain't bad either. Are you running a solid roller cam and what heads?

[Rare Iron]

Well, for what it's worth, both owners of Kinetic (Chris Gesek & I can't remember the other guy) used to work for Roush years ago. They use my mufflers whenever they do a Cobra, & even other vehicles, so I've been to their facility on numerous occasions. As far as I know, they have a very good reputation & the shop is pretty extensive & clean. I can't say firsthand though as I've never had a motor built by them. They used to do a lot of prototype work for GM & Ford.

-Eric

[Cobra #3170]

Originally Posted by gsharapa

Cobra #3170

Awesome Cobra and your driving ain't bad either. Are you running a solid roller cam and what heads?

Cam= solid roller 287@.050 292 @.050 .780 lift

Heads= Blue Thunder raised port CNC'd and then hand ported about 50 cfm better than my best ported Edelbrocks. The chambers are also way better than Edelbrock. The valves are relocated so that an offset rocker is needed but that helps flow.

Exhausts are 2 1/8 primarys with a 3 1/2 collector, I had to have a new stainless system fabricated because the ports are about .4" higher so we went up in primary size.

Dailey dry sump with Steffs pan and tank worth about 13 hp

[gsharapa]

Awesome......just love the sound of your motor and was pretty sure it had a solid roller in it. Having another Cobra built (Turn Key Minus) myself and trying to decide on the motor now... I think I'm going to do a 496 FE with solid roller and a bunch of goodies but will be more like 650 HP...

[Cobra #3170]

Originally Posted by gsharapa

Awesome......just love the sound of your motor and was pretty sure it had a solid roller in it. Having another Cobra built (Turn Key Minus) myself and trying to decide on the motor now... I think I'm going to do a 496 FE with solid roller and a bunch of goodies but will be more like 650 HP...

Thank You,

I agree with your approach it can be down right dangerous when you get much over a true 600hp, you really need to be careful with tire choice, I run 40 tread wear Hoosiers, anything less will bite you at big throttle openings. I had some road racing slicks on a couple of years ago that would really light up if you went to full throttle in 4th with a 3:31 rear end at well over 120, they were about an 80 tread wear rating and were very scary. I can't imagine one of these things on say a Pilot Sport with a 220 tread wear rating and 650 hp.