Im going to remove the 2 balencers o my spare blackbird engine to remove a load of inertia. They weigh s**t loads and only a little if the weight
looks to be eccentric.
Ive heard a few peope have done this with a bird engine but does anyone know how much difference it will make?
I know the engine is likely to be a bit more vibey but im confident that if I block up the oil gallerys to the balancers i should also get a bit of
extra oil pressure which would help the blackbirds crank a bit.
Carnut
i;m told it makes it rev like a 600 rather than a 1100, (faster pick up), most of the grass track lads do it, id'e love too myself but i have too run a standard engine. It also helps with oil feed like you say to #3 this is allways the one to go and it feeds the balancer as well as the big end.
Cheers John,
Looks lke im going to go ahead and do it.
If there anything wrong then ill just put them back in again.
How much difference does it make to acceleration?
Interesting...
I'd expect it to make a considerable difference to the acceleration of the engine in neutral and a tiny amount to the acceleration of the car!
I did the sums for a lightened flywheel and got a few percent in 0-60 time for a normal car. A lanchester shaft will have very small moment of inertia
compared to a flywheel.
Just compare the kinetic energy of the car at 60 to that of the flywheel at 6000revs.
Bob
it does make then "rev up" quicker, but talking too the guys that have done it the main benifit is better oil flow to #3 rod as it is shared with a feed too the balancer, not forgetting a fair amount of "rotating weight" loss.
I remove the balancers from ZZR1100 engines for better oil flow and to save a heap of weight. I weld the holes up in the case, so it's not possible to refit the balancer later, but you wouldn't really want to anyway.
Hi Rorty,
Do you notice any difference in acceleration or even engine breaking etc?
quote:
Originally posted by carnut
Hi Rorty,
Do you notice any difference in acceleration or even engine breaking etc?