What is the difference between a rh and Lh rotation engine

[tfg111]

What is the difference between rh and Lh engines? Is it just a matter of cranking the engine the opposite way and changing the firing order or are there major mechanical differences?

[scott_s]

yes

[tfg111]

yes what?

[scott_s]

sorry for the cheap shot. couldn't help myself. many differences. not just spinning backward. what did You have in mind?

[tfg111]

my engine is a rh rotation and the salt water has rotted the water jacket thru to the outside so now it is leaking water into the bildge. I came across a low mileage car motor with a good block and I wanted to know if it could be converted to run rh?

[BJ]

"It is doable, but hardly a reasonable project. By the time your thru swapping out cam, distributor. manifolds. fuel pumps, etc.etc. you would be far ahead to replace engine with a good used or rebuilt marine rh engine."

[BJ]

"It is doable, but hardly a reasonable project. By the time your thru swapping out cam, distributor. manifolds. fuel pumps, etc.etc. you would be far ahead to replace engine with a good used or rebuilt marine rh engine."

[fastjeff]

"A reverse rotating engine has the pistons in backwards, along with a cam that has the distributor gear ground backwards (so it turns the distributor and oil pump the right way). Some engines---Chrysler, for example--use a different rear main seal, but the rest of the engine is pretty straight forward.

Jeff

PS: Be sure to use brass freeze out plugs and marine stainless head gaskets."

[tfg111]

thanks for all the info.