A while back, I posted some questions related to a v-twin I am working on.
Here is another puzzling one. The engine is a v-twin, dual overhead cam, 4 valve configuration - designed from a clean sheet of paper - not really a copy of anything.
The motor has severe intake reversion that comes on...
I am looking for a good camshaft design software package that will allow entry of different cam profiles and be able to predict the seat and nose pressures required for proper valvetrain motion.
I would be using this for an overhead cam, direct acting (bucket)lifter design. Are there any good...
The engine is a V-twin with a dry sump oil system. The engine crankcase is basically sealed
and runs at between 5 and 10 inches of vacuum generated by the scavange pumps.
The breathing to atmosphere is done at the remoted oil tank. The tank is vented
to atmosphere through the filler cap...
In a 4 valve head arrangement; per cylinder - how important is it to balance the flows of both intake runners to each other and both exhaust runners to each other? The aplication is a NA carbureted engine. To what degree should each individual runner be balanced say on the flow bench?
The...
We are experimenting with intake manifold designs on a V-twin engine for the street (7000-8000 rpm). We may need to use two carbs and the question is this:
For the manifold design, would it be better to have individual runners to each cylinder (IR) or an open area behind the carbs (open...
I just recently found out about this forum and am very impressed so far with the topics and discussions. I decided to post a question.
Quick background is that I am designing a head for a V twin from a clean sheet of paper. It is a DOHC, 4 valve design. I have a mechanical engineering...
