Dyno Results...

[MustGoFaster]

Originally posted by fievel@Sep 15 2004, 05:32 PM
chris just got back from the dyno again, and they said hey buddy how come your car has no motor?
Maybe it:

[fievel]

it didnt walk, it ran.

[Jakey]

Has there been any sort of obvious reason show up as to why Chris' car walked?

[Raptor]

Actually, now that the string of longblocks is settling down a bit, I should be able to pull the rest of his apart tomorrow and find out if there is any indication. I am guessing there won't be since the cap didn't have any ability to shift or otherwise. Beyond that, or some obvious oiling issue, anything else would be speculation. I mainly just want to find no damage to the crank or block surfaces. It didn't walk as far as it seemed at first, the damage may be contained to just the bearing itself. Keep your fingers crossed. If all is good, higher load bearings, and a twin disk clutch should prevent it from going again. I found 1 place in the cities that will polish the thrust surface of a crank which we will also probably do. The machine to do that work is about 80K I have been told and this is the only one in the Midwest supposedly.

[Jakey]

How does running a twin disc clutch potentially reduce the risk of walking again?

[Super Bleeder!!]

as i understand it, they provide a lot of clamp, but not so much "thrust" against the crank/flywheel

[MustGoFaster]

Not quite. They use less clamp (stock or lighter pedal pressure) and more area. They have 2 disks (who would’a thunk it?), so they have double the friction area of a single disc clutch and thus can hold a lot of power with little force.

So some were around stock force on the thrust bearing VS. ACT 2900. Hmmm...

[JustROLLIN]

Mike, I know that Gopher will do polishing of cranks.

[LightningGSX]

Originally posted by MustGoFaster@Sep 15 2004, 09:33 PM
Not quite. They use less clamp (stock or lighter pedal pressure) and more area. They have 2 disks (who would’a thunk it?), so they have double the friction area of a single disc clutch and thus can hold a lot of power with little force.

So some were around stock force on the thrust bearing VS. ACT 2900. Hmmm...
I think most of them use a considerably less than stock pressure plate.

[niterydr]

most of them are equal to or less than stock pressure plate force, the 'grab' is found from the greater surface area and different choice of material (almost like having 2 clutches, to hold 800hp, you only need 2 @400hp capible). Pretty much what ryan said.