ranger tech question ? can you help ?


sirwilliammarkley

10+ Year Member

Joined
Mar 24, 2008
Messages
3
Points
3,001
Age
41
Vehicle Year
1989
Transmission
Automatic
I am having problems fitting the flex plate from my 1989 Ranger automatic, onto a motor out of a 1990 ranger that had a manual trans, am i missing something ? a spacer or what ?
 
What motor? That may be needed to try and help you with your problem.
 
I am having problems fitting the flex plate from my 1989 Ranger automatic, onto a motor out of a 1990 ranger that had a manual trans, am i missing something ? a spacer or what ?

Umm... A flex plate is only for automatics.:icon_confused:
You have to put a flywheel on for a manual because an automatic uses the flex plate for the starter and the torque converter is for transfering power to the transmission, on a manual the "flywheel" has teeth for the starter but is thicker because it needs to connect with the clutch.

A flex plate is very thin and is only used on autos to start the car/truck. But a flywheel is like a flex plate with a brake rotor in the middle of it, the brake rotor like thing is a friction surface for the clutch which is like a manual torque converter that you operate and shift the manual trans.

The motors probably have different output shaft sizes for automatic and manual transmissions, look and see if you can take off the mount plate off of the engines. Or look for any differences.
 
I think he is using an engine that used to be in another truck with a manual, and transferring it into his truck with an auto- and I'm thinking the flywheel from his old motor won't fit properly on the new one?

What is making it different, won't fit on the crank, or the spacing is wrong for the starter? More details...
 
Bolt length is different for a flex plate and a flywheel.
 
RE:

The problem is easy to solve. Pull the bushing from the rear of the crankshaft. The auto input shaft is twice as big in diameter as a manuel transmission. It will be a brass bushing or bearing that needs to come out.
Or if the bolt pattern appears to be different, keep spinning the plate around on the mounting face of the crank, as one bolt hole is a smidge different, so the plate or flywheel is balanced to the crank. It will only bolt down in one spot only.
 
Last edited:
he needs the spacer.
 

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