Hello.

I have been doing a little bit too much wrenching these days between the 4 trucks.

But one thing I noticed that I thought would be in interesting share here at DTR is the differences in flywheels. The 1990 flywheel out of the W250 is about half the thickness and weight of the 1993 w250 flywheel... Interesting in what differences all that extra rotating mass will do... I guess that's why my 1989 and 1990 engines seem to slam to a hault quicker than the 1993 during shutoff.. and it isn't just the higher compression!

Both flywheels are the same in dimension, but the fatter one is about twice as thick all the way to the back and the lighter 1990 one cones out in the middle on the back to get the same overall depth...

 

PapeCAT that may be the reason the non i/c engines seem to wind up quicker than the i/c engine. They may not really wind up faster but it sure sounds like it. Lighter rotating mass will do wonders in the speed of wind up, but on the other hand the heavier the mass the longer it will hold it's torque. Or am I thinking wrong?

 

Does anyone know the pros/cons of the different flywheels from non i/c to i/c trucks?

The one I have out from my 1990 W250 is about half the mass as my 1993 W250's.... Which is the preffered style and why?

I agree, RollingCoalSmoke - I assume that the thick one from teh 1993 will give you more instant clutch popping momemtum/torque but the lighter one will allow it to rev faster...