switching out engines


Information and questions on GL1100 Goldwings (1980-1983)
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mcgyver2112
Posts: 70
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Location: Plano,IL
Motorcycle: 1981 GL1100I Interstate
1977 CB750A Hondamatic

switching out engines

Postby mcgyver2112 » Mon Nov 22, 2010 7:56 pm



I recently obtained an engine with trans for my 1100. My original engine is locked up. Will it be easier to replace the motor and trans together or just replace the motor. This will be the first attempt to work on a bike. I've been working on cars and trucks for 30 years. I think i can handle this!



ekcyclerepair
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Re: switching out engines

Postby ekcyclerepair » Mon Nov 22, 2010 9:13 pm

I would install the complete engine/transmission assembly. The trans is located inside the engine cases, so you'd end up pulling the heads, removing the clutch, splitting the cases, etc.. to access the trans.

Here's a few things that come to mind that might make the swap go a little smoother:
-Is the engine the same year as your bike? I think there was a change is the timing advancer on the '83 model, which would bring on a whole new set of challenges to your project. I'm not 100% positive on that. Going from memory :) .
-You might want to replace the timing belts, depending how many miles/years ago they were replaced.
-If you're going to remove the starter, make sure the engine is tilted to the correct position first.
-Check the stator on the replacement engine. A common problem that's easy to fix with the engine already out.

Keep us updated. Hopefully you have a nice warm garage to work in :D .

Ernie

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WingAdmin
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Re: switching out engines

Postby WingAdmin » Mon Nov 22, 2010 9:59 pm

Have a closer look at the engine - it's not like a Harley where the engine and transmission are separate units. If you pull the engine out of the bike, you've also got the transmission - it's all in one big case.

Unless there's something wrong with the internal workings of the transmission of the replacement engine, I'd just put it in as-is, and keep the old seized engine around for spare parts (or practice!).

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mcgyver2112
Posts: 70
Joined: Sun Aug 02, 2009 9:47 am
Location: Plano,IL
Motorcycle: 1981 GL1100I Interstate
1977 CB750A Hondamatic

Re: switching out engines

Postby mcgyver2112 » Wed Dec 01, 2010 5:18 pm

I beleive the units are identical ones. I will make sure first. The new one has a good trans. I will keep you posted as to the progress. I have a huge warm garage to work in. I just need to find the time now. Thanks for the tips.




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