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750 carb reversal

  • Thread starter Thread starter Scudder
  • Start date Start date
S

Scudder

Guest
This is a very long story so I'll cut to the chase. My 1978 gs750 is now blowing air out of the carbs instead of taking air in. I was forced to remove the head awhile back and I thought I got the cams and chain back in place appropriately. However, now I'm pretty sure I goofed it up. How could the the carbs be blowing out air instead of sucking it in. Obviously I've messed something up, but what?

By the way... the bike ran prior.

Scudder
 
If you had the cams off, double-check the cam timing before something goes
nuke1.gif
and then you go
cus.gif
and
banghead.gif


.
 
timing is wrong most likely and your valves are backwards, if thats even possible.
 
Intake valves are opening on exhaust stroke of pistons, instead of the exhaust valves.

That's the cam. It's not timed properly.

You need to fix that.
 
Thanks so much for the responses. I suspected something like that. Looks like I'm headed back in. :|

Scudder
 
You could always put a big v-twin carb on the end of your exhaust and have one of the most interesting sounding bikes ever. That'd probably be more trouble than it's worth though.
 
Or just attach the carbs to the front of the engine... exhaust going straight out the back... :)
 
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