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Which petcock do you recommend?

  • Thread starter Thread starter gonzo
  • Start date Start date
G

gonzo

Guest
Hi,

I have a 1978 Suzuki GS 1000 E - and a bad petcock. What do y'all recommend I replace it with?

I'm also working on rebuilding the carbs - wish me luck with THAT adventure!
 
gonzo said:
Hi,

I have a 1978 Suzuki GS 1000 E - and a bad petcock. What do y'all recommend I replace it with?

I'm also working on rebuilding the carbs - wish me luck with THAT adventure!
Click to expand...

Buy a new vacuum operated petcock. The bike's carb system is designed for this type of petcock. You will get many years of reliable service from the stock unit. Some here will advocate going to a manual version. I believe that the vacuum controlled unit is safer to use.
One thing we all agree on though, is that using the cheap aftermarket rebuild kits is a no brainer. They all seem to leak from new.
Check on this site for the carb rebuild sticky covering your VM carbs. It is exellent and will help you through the rebuild process.
 
I don't see what the benefit is of running a manual petcock. The first time you run the carbs dry on a busy road and you are scratching your head trying to figure out why your bike died you will want that automatic petcock.
 
I like my vacuum petcock as well, as I have the memory of a goldfish at times. It's nice not having to remember to turn the thing on and off. I also like my reserve as I always forget how much fuel I have.
 
gonzo said:
I'm also working on rebuilding the carbs - wish me luck with THAT adventure!
Click to expand...

Don't let the task intimidate you. It's not that difficult, it just takes time, patience, and an impact screwdriver. You can follow the rebuild series on the homepage, even though it only covers the CV type carbs. The only major thing you'll have to do differently is synching them. The CV's have the adjustment screw outside of the carbs. While the VM's adjustment screws are located inside the top of each carb body.

Brad bt
 
Next question

Next question

Which brings me to my next question. . .

When I rebuild the carbs, I dont have the air box - the bike came with 4 individual air filters. Will I need to 1, get new jets. And 2, take it to somebody to get the carbs adjusted so they work. I've heard a lot of people say to never screw with the carbs, but mine are in great need of repair. How hard is it to adjust the air/fuel mixture without a calibration tool?
 
bradleymaynar said:
Don't let the task intimidate you. It's not that difficult, it just takes time, patience, and an impact screwdriver. You can follow the rebuild series on the homepage, even though it only covers the CV type carbs. The only major thing you'll have to do differently is synching them. The CV's have the adjustment screw outside of the carbs. While the VM's adjustment screws are located inside the top of each carb body.

Brad bt
Click to expand...

The VM carb rebuild document can be found on the homepage under "In the garage". The link entitled "VM Carburetor Rebuild" is written by Paul Musser.
There may not be as many pics as the one for the CV series rebuild, but the diagrams are clear, easy to follow and well explained. If you get stuck, ask in this forum.
 
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