Honda CX 500 Forum banner
1 - 9 of 9 Posts

·
Registered
Joined
·
2 Posts
Discussion Starter · #1 ·
Hey guys,

I posted my 78 CX on Craigslist to sell as is, and someone replied offering to sell me an engine from an 81 GL 500 Silverwing. From what I could tell online it seems that the ignition is different so I was wondering what the compatibility would be, and how much work it would take to install it.

Thanks
 

·
Registered
Joined
·
4,104 Posts
I have a Eurosport TI motor in a 78 frame

I believe the GL motor is TI too?

they will fit but they are are longer so you'll have to move the expansion bottle

and decide which rad and thermostat system to use.

You'll also need TI spark units and coils plus sections of the GL ignition harness

and enough knowledge of the few but important differences of both systems not to make any serious cock ups.

It isnt difficult as long as you have the parts and know what you're doing
 
G

·
I have a Eurosport TI motor in a 78 frame

You'll also need ......enough knowledge of the few but important differences of both systems not to make any serious cock ups.

It isnt difficult as long as you have the parts and know what you're doing


Eloquent Reg-

It isnt difficult as long as you have the parts and know what you're doing.



Worked for Mary Shelley and my plummer too. I'm writing that line on my cell wall, TY.
 

·
Registered
Joined
·
977 Posts
It isn't difficult as long as you have the parts and know what you're doing.



That sounds like one of those posts from a movie.
 

·
Registered
Joined
·
3,999 Posts
I have a Eurosport TI motor in a 78 frame

I believe the GL motor is TI too?

they will fit but they are are longer so you'll have to move the expansion bottle

and decide which rad and thermostat system to use.

You'll also need TI spark units and coils plus sections of the GL ignition harness

and enough knowledge of the few but important differences of both systems not to make any serious cock ups.

It isnt difficult as long as you have the parts and know what you're doing


Wouldn't it be simpler to put the rear cover and flywheel from the CX engine on the Gl engine?
 

·
Registered
Joined
·
2 Posts
Discussion Starter · #7 ·
What's wrong with your 78CX?


It was given to me by a friend of a friend who had begun disassembling the engine to find the source of a knocking sound. I took it apart and found that one of the main bearings was extremely worn. But I have been told that there are no oversized bearings for this engine so I cannot just get the crankshaft turned. So I have been trying to find a working replacement engine because the frame and gas tank are in great shape.
 

·
Registered
Joined
·
8,423 Posts
It was given to me by a friend of a friend who had begun disassembling the engine to find the source of a knocking sound. I took it apart and found that one of the main bearings was extremely worn. But I have been told that there are no oversized bearings for this engine so I cannot just get the crankshaft turned. So I have been trying to find a working replacement engine because the frame and gas tank are in great shape.


Shipping could be a bind but,





http://cgi.ebay.com/ebaymotors/1980...9190833QQptZMotorcyclesQ5fPartsQ5fAccessories



Another alternative if you can source the stock shells would be another crank but you would need to get it checked at a local engine/engineering specialist and the engine needs completely internally flushing to remove any chance of metal debris,



http://motors.shop.ebay.com/__?_from=R40&_trksid=m39&_nkw=cx500+crank





This is how both my CX engines have been re-built.



Note:For all intents and purposes ALL CX/GL 500 crankshafts can be used in ALL CX/GL 500 none turbo engines without need to replace the main bearings which even on the worst basket case engine I have had were still usable,unlike the big-ends.
 

·
Registered
Joined
·
851 Posts
Hi,

If the GL500 motor has a manual cam chain adjuster ( some here in the UK had auto adj.), just swap the rear cover from the cx and the rotor/flywheel. The flywheels look identical but the CX has a small brass plug in the side which it needs to trigger the pulsers for the cdi ignition. If the GL has an auto chain adjuster you would need to blank the hole in the rear case for the manual one.
 
1 - 9 of 9 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top