An educated guess Steve would be when the angle adversely effects the operation of the carb floats.
My Chevy motor in the Cresta was canted back 10° and my guess is that would be about it before things start going wrong, but I stand to be corrected!
engine level
Moderator: Moderators
ive put engines in cars at stupid angles (front to back and side to side) but have always made a plate up to get the carb sitting correctly. the other thing to think abbout is the oil pickup,. other than that you should be able to run an engine at any angle you like. look at realy fast cars they leave the line on the rear wheels, totaly wrong angles but they dont seem to suffer too much.
too much is never enough
-
mopar_mark
- Posts: 6738
- Joined: Fri Jul 14, 06 8:01 pm
- Location: Windlesham, Surrey
Steve,
I assume you have already decided your ride height & ground clearance for your sump. I also assume your axle is already installed.
If yes, it is not a problem, just that you are you are sort of working backwards.
In other words installing engine to suit the rear, as opposed to installing axle to suit the engine. I'm not sure what your rear end set up is, but guess you have adjustment.
You also need to install your engine based on your required ride height & the angle best suited to your car. Basically you want your gearbox in-line with your diff/axle.
A lot of people install the engine with a 2-3 degree negative (Engine down at the front) The negative angle gives better weight transfer to the rear of the car.
Don't forget Engine, axle angle and ride height are all relative to the ground, not the chassis.
Most engines are already set at 3 degrees, hence the angle on the intake manifold. The angle on the manifold means the carb will sit parallel/level when installed in a normal production car.
N.B The 3 degrees in this case is not because of drag racing, but to give more room in the car as this aids in having a smaller prop shaft tunnel
In a street car application it is not good for the engine & axle to be in-line as it doesn't allow the UJ to rotate, but for drag car this is not an issue.
I have tried writing this 2-3 times & still maybe not very clear, I know what I mean but cant seem to put it down in words at the moment.
For the sake of a phone call, why don't you ring Geoff Hausser, as he knows the car, chassis set up, engine etc, he is probably best to advise you.
Cheers, Mark...
I assume you have already decided your ride height & ground clearance for your sump. I also assume your axle is already installed.
If yes, it is not a problem, just that you are you are sort of working backwards.
In other words installing engine to suit the rear, as opposed to installing axle to suit the engine. I'm not sure what your rear end set up is, but guess you have adjustment.
You also need to install your engine based on your required ride height & the angle best suited to your car. Basically you want your gearbox in-line with your diff/axle.
A lot of people install the engine with a 2-3 degree negative (Engine down at the front) The negative angle gives better weight transfer to the rear of the car.
Don't forget Engine, axle angle and ride height are all relative to the ground, not the chassis.
Most engines are already set at 3 degrees, hence the angle on the intake manifold. The angle on the manifold means the carb will sit parallel/level when installed in a normal production car.
N.B The 3 degrees in this case is not because of drag racing, but to give more room in the car as this aids in having a smaller prop shaft tunnel
In a street car application it is not good for the engine & axle to be in-line as it doesn't allow the UJ to rotate, but for drag car this is not an issue.
I have tried writing this 2-3 times & still maybe not very clear, I know what I mean but cant seem to put it down in words at the moment.
For the sake of a phone call, why don't you ring Geoff Hausser, as he knows the car, chassis set up, engine etc, he is probably best to advise you.
Cheers, Mark...