Engine Choice: 1100 vs. 1150

[lecroy]

I run an 83 1100 engine in an 84 1150 frame. The mounts are the same between the two. The 84 frame is a bit higher over the top of the head which is nice when it comes time to swap engines. No need to pull the valve cover off.

[Anonymous]

I run an 83 1100 engine in an 84 1150 frame. The mounts are the same between the two.

Awesome. Thanks for the info Lecroy, that is just what I wanted to hear. I will use my 1100 motor as the basis for my layouts until I find an 1150 to work from.

Thanks to all for the replies.


Mark

[gsBert]

i have an 1150 engien in a 1981 1100 frame.
while the mounts line up just fine, here are a few concerns:
- the engien doesn't slide in with the valve cover on it. (that camchain box on top...)
- the left side of the engine (magneto) sticks out more.

i thought the 1150 motor already puts out close to 130 hp stock, doesnt it?

[Anonymous]

the engien doesn't slide in with the valve cover on it. (that camchain box on top...)

No problem, Bert. I am working on a custom spine frame that will not require sliding the engine in at all, it will be hanging from the spine and will simply lift into place from below.

I can't pull the valve cover off my 1100 without pulling the cover off the camchain box first, anyways, so it sounds like they are pretty close in that area.

i thought the 1150 motor already puts out close to 130 hp stock, doesnt it?

Maybe in the advertising brochures. RWHP for a stock 1150 would be maybe 100-105. With pipe/pods/jet kit/degreed stock cams I would expect 115-120rwhp. With 36mm flatslides and G3 cams I would expect a touch over 130rwhp. Add an 1197 Wiseco kit and it should be close to 140rwhp, with over 80ft-lb of torque. Perfect!


Mark