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GS 750 Engine interchange question

  • Thread starter Thread starter Anonymous
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A

Anonymous

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I would like to know if the engines are the same between an '82 GS 750 and a '79-'80 GS 750? Thanks, Mike
 
If it's got rectangular cam end covers, it's a 16 valve,if they're round, it's an 8 valve, they should swap fine
 
Re: GS 750 Engine interchange question

The engine mounts between those years are all the same. However, starting with 1980, the carbs were 32 mm CV's instead of the earlier 26 or 28mm (I forget which size) VM style. Therefore, the airbox boots on a 79 will be too small to fit over the 32mm CV carbs. You will need to modify the airbox to accept the 32mm boots. You will not be able to simply install a later model airbox as it will not fit the 79.

Earl

cheetah-bike said:
I would like to know if the engines are the same between an '82 GS 750 and a '79-'80 GS 750? Thanks, Mike
 
Re: GS 750 Engine interchange question

earlfor said:
The engine mounts between those years are all the same. However, starting with 1980, the carbs were 32 mm CV's instead of the earlier 26 or 28mm (I forget which size) VM style. Therefore, the airbox boots on a 79 will be too small to fit over the 32mm CV carbs. You will need to modify the airbox to accept the 32mm boots. You will not be able to simply install a later model airbox as it will not fit the 79.

Earl

cheetah-bike said:
I would like to know if the engines are the same between an '82 GS 750 and a '79-'80 GS 750? Thanks, Mike

What you could do is get an airbox from a 1980 or later GS850GT or GS1000GT. This is the same as the 77-79 750 box, but has the larger carb boots. This does work, I've done it.
 
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