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Unread 08-13-2017, 06:33 PM   #11
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Default Re: Comet clutch question

Great, I think I'll order the clutch then. I'll keep everyone posted. Thanks!
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Unread 08-13-2017, 06:35 PM   #12
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Default Re: Comet clutch question

On a side note I'm going to run a fuel pump on my 420. Carb spacer ok for pulse or should I use the valve cover?
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Unread 08-13-2017, 07:45 PM   #13
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Default Re: Comet clutch question

Use the carb spacer, much cleaned and reliable
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Unread 08-13-2017, 07:53 PM   #14
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Default Re: Comet clutch question

Great, that's just what I'll do! Thanks
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Unread 08-13-2017, 08:54 PM   #15
Vegas modded 420
 
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Default Re: Comet clutch question

Usually need a return line using the spacer. I prefer the valve cover but in winter I get water in the line. I rebuilt the engine with a cam and rod now gotten oil in the line a couple times. Only takes a little bit to cut the fuel down. But I been hotrodding it around breaking it in. It never got oil in it before so could be new rings settling in. Not getting any oil out of the rocker cover vent.
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Unread 08-13-2017, 10:09 PM   #16
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Default Re: Comet clutch question

Can the factory valve cover hole be used or would I need to tap? Why the water in the line?
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Unread 08-13-2017, 10:16 PM   #17
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Default Re: Comet clutch question

Does the carb spacer need a return?
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Unread 08-13-2017, 10:39 PM   #18
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Default Re: Comet clutch question

Quote:
Originally Posted by 68chevy2nova View Post
Can the factory valve cover hole be used or would I need to tap? Why the water in the line?
If you plan on using the crankcase pulse --- it will work the best if you make a hole and put the fitting in the valve cover on the inside or engine side of the valve cover. Check out the pictures on AGK's site below. Water or condensation in your engine happens mainly in cool to cold weather and is a sign that the engine is not being broth up to operating temperature -- engine oil temp should be between 180 and 200 to start driving the water out of the engines interior.

https://affordablegokarts.com/pages/fuel-pump-setup
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Unread 08-14-2017, 11:55 AM   #19
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Default Re: Comet clutch question

All great info! Guess I'll make a hole in the valve cover and do it with the barb fitting. I might as well put heavier valve spring in too since I took the gov out. Just about every project I work on ends up nickel and diming me, but I'm sure I'm not the only one.... The cart is turing out sweet tho.
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Unread 08-15-2017, 08:55 PM   #20
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Default Re: Comet clutch question

Quote:
Originally Posted by 68chevy2nova View Post
Can the factory valve cover hole be used or would I need to tap? Why the water in the line?
Yes but you have to drill in the right spot so it comes out inside, and I used a 1/8 npt fitting not a larger 1/4npt that is more common. I also put a fitting in the hose hole and ran hose to my airbox.

Water is condensation. It was 18F out that day and about the same other days when I was running it before the snow got too deep. I took video of it. Anyway I ran it for a while each time and it was on the floor most of the time so it was warmed up alright. It was so cold I think, that caused it. Like I said only a thimble full will mess it up and it starts cutting out at WOT. Just pull the hose off the pump and its gone, once I realized what was going on.

https://www.youtube.com/watch?v=Y4bj1weMSKw

You can do the intake spacer pulse, I did that on the first clone I put in. It overflowed. I put a return line on it. Someone changed it and one time it came off and started puking fuel all over the engine. I decided I didn't like that business and put it in the rocker cover for this one. What should do is check out that valve on my stock yamaha and use something like that. It was hooked up to go from the block to the rocker with that pcv type valve and the pump was teed into it. I think it circulates and that way the pump stays clean. I could run it to the other hose I bet.
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