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Manual Petcock you've wanted me to tell you about. (PART 2)

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Manual Petcock you've wanted me to tell you about. (PART 2)

PostAuthor: Jake » Tue May 17, 2011 9:16 pm

PART 1
viewtopic.php?f=75&t=10789


If you read back thru this thread, you will find that a couple or more guys have had the re-route the fuel line, but no big deal.
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Re: Manual Petcock you've wanted me to tell you about.

PostAuthor: Streetmedik » Wed May 18, 2011 9:20 am

May be no big deal for someone that knows what they are doing.. this is me we are talking about!
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Re: Manual Petcock you've wanted me to tell you about.

PostAuthor: wl_walker » Thu Jun 02, 2011 6:10 pm

Regarding the fuel line routing, after installing 1999 Yamaha Wolverine 350 manual petcocks (the $12 pit bike petcocks I bought new were leaky pieces of junk) I wanted a clean somewhat factory looking set of fuel lines. I had a pair of u-turn stainless steel tubes made up and fitted Motion Pro fuel hose over them. Looks real nice to me!
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Re: Manual Petcock you've wanted me to tell you about.

PostAuthor: ms8238 » Thu Jun 02, 2011 6:19 pm

Thats a good idea long as you don't impede flow, which I don't think it does.


on tight turns with rubber hose you can also put hose clamps/zip ties in the turn to force it to stay round.
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Re: Manual Petcock you've wanted me to tell you about.

PostAuthor: Jake » Thu Jun 02, 2011 6:29 pm

wl_walker wrote:(the $12 pit bike petcocks I bought new were leaky pieces of junk)
Sorry you got a bum pair. It's been 3 years now with mine and no problems.
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Re: Manual Petcock you've wanted me to tell you about.

PostAuthor: Streetmedik » Thu Jun 02, 2011 7:50 pm

It seems you are only running fuel to one carb? I dont see the 'T'. But I like that idea and I think that is what I will try to do. (except I will send fuel to both carbs).
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Re: Manual Petcock you've wanted me to tell you about.

PostAuthor: ms8238 » Thu Jun 02, 2011 10:47 pm

SM older bikes had a petcock on each side of the tank. 1 for each carb.
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Re: Manual Petcock you've wanted me to tell you about.

PostAuthor: wl_walker » Fri Jun 03, 2011 1:45 am

Mine is an '82 750 with a petcock for each carb so there is no T on this bike. Flow is great, the inner diameter is the same as the output tube on the petcock. I got the stainless tube wet with fuel and it slid around easily. I highy recommend the Wolverine petcocks. The rubber flow disc that the lever assembly fits into is cup shaped instead of flat. Make a great seal and I expect they will last a good long time. Yamaha part number is 21V-24500-11-00 and cost me $18 each. Money well spent!
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Re: Manual Petcock you've wanted me to tell you about.

PostAuthor: Jake » Fri Jun 03, 2011 5:23 am

wl_walker wrote:Yamaha part number is 21V-24500-11-00
Other Yamaha petcocks with the same mounting bolt spacing as the Wolverine http://viragotech.com/newtech/Manual%20 ... Virago.htm
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Re: Manual Petcock you've wanted me to tell you about.

PostAuthor: JasonWW » Sat Aug 20, 2011 10:58 am

I'm fixing to pick up a manual valve myself.

I think a nice back up device would be to add a vacuum switch after the petcock. That way if you forget to switch it to off, the vacuum switch would catch it.
My 85 XV700 has been sold. Thanks for all the help guys. :)
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Re: Manual Petcock you've wanted me to tell you about.

PostAuthor: JasonWW » Fri Sep 09, 2011 11:58 pm

I got that nice ON/OFF/RES Yamaha petcock, but I didn't want to add a 90 to the line, so I swapped the outlet to the front side.

Image


I was also reading up on filters and found out that the compressed brass screen type filters are not that good. They filter down to 40 to 60 microns which still lets a lot of junk past. Most plastic screened filters are 40 micron. I picked up a WIX 33011 filter which is rated to filter particles down to 12 microns in size.

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I added the blue paint just to train myself which direction to turn it. The shape of the lever is misleading.
My 85 XV700 has been sold. Thanks for all the help guys. :)
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Re: Manual Petcock you've wanted me to tell you about.

PostAuthor: Streetmedik » Sat Sep 10, 2011 9:22 am

How did you swap the outlet to the other side? I liiked at mine and I cant see a way to do that. Mine appears to be the same as the one you have in the photo.
1985 Yamaha Virago XV700 ENGINEcycle

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Re: Manual Petcock you've wanted me to tell you about.

PostAuthor: JasonWW » Sat Sep 10, 2011 9:39 am

The brass fitting is pressed into place. You can remove it with vice grips by twisting it out being careful not to scratch it.

Then I drilled out the other side (slightly larger).

Stuck the brass fitting backwards into a drill and added a groove for the epoxy to better grab it and hold it into place.

I mixed up a little Quiksteel and put it onto the fitting nice and tight and jammed it into the slightly larger hole. Then I put some more epoxy into the old hole to seal it up.

Of course the epoxy putty was over filled, :wacko: so I had to quickly mold it so it would flow nice and fast with minimal restriction through the fitting and into the main chamber.

Quiksteel is similar to JB Weld, but made for gas tank repairs.

I took pictures if you want to see the process.
My 85 XV700 has been sold. Thanks for all the help guys. :)
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Re: Manual Petcock you've wanted me to tell you about.

PostAuthor: Streetmedik » Sat Sep 10, 2011 9:46 am

As the saying goes, A picture is worth a thousand words.
1985 Yamaha Virago XV700 ENGINEcycle

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Re: Manual Petcock you've wanted me to tell you about.

PostAuthor: pofarm » Sat Sep 10, 2011 10:11 am

I used the same petcocks and moved the outlets like you did. My petcocks started leaking around the shut off gaskets. I went through three of them in two seasons. I hope you have better luck with yours. I ended up ordering a set of OEM petcocks from Boats.net. They are part #21V-24500-11.
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'82 XV750
Saddlemen Seat
Hard bags
Travel trunk
Windjammer SS fairing
LED turn/running lights front and rear
'89 XV1100 motor
'86 XV700 front suspension, brakes,
calipers and gauges
progressive springs, front and rear
XS 750 dual brake discs
CB550 handle bars
copper intake
Mikuni HS40 carb


I also have a 96 Royal Star Tour Classic

picture album of my build
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Re: Manual Petcock you've wanted me to tell you about.

PostAuthor: JasonWW » Sat Sep 10, 2011 10:29 am

pofarm wrote:I used the same petcocks and moved the outlets like you did. My petcocks started leaking around the shut off gaskets. I went through three of them in two seasons.

These ARE OEM Yamaha, just for a different model of bike that doesn't use the vacuum shutoff. So if you had 3 OEM petcocks that leaked, then your 4th might leak, too. IDK what to tell you. What would be better than OEM?

Anyway, here are some pics.

StockImage

Image

Image

Image

Image

Image
My 85 XV700 has been sold. Thanks for all the help guys. :)
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Re: Manual Petcock you've wanted me to tell you about.

PostAuthor: pofarm » Sat Sep 10, 2011 9:46 pm

My mistake. They looked like the junk aftermarket pit bike petcocks I had in the first picture.
Image
'82 XV750
Saddlemen Seat
Hard bags
Travel trunk
Windjammer SS fairing
LED turn/running lights front and rear
'89 XV1100 motor
'86 XV700 front suspension, brakes,
calipers and gauges
progressive springs, front and rear
XS 750 dual brake discs
CB550 handle bars
copper intake
Mikuni HS40 carb


I also have a 96 Royal Star Tour Classic

picture album of my build
-s15.photobucket.c0m/albums/a353/pofarm/virago/-
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Re: Manual Petcock you've wanted me to tell you about.

PostAuthor: JasonWW » Sun Sep 11, 2011 12:34 am

pofarm wrote:My mistake. They looked like the junk aftermarket pit bike petcocks I had in the first picture.

I see.
I didn't want to take a chance on a cheap $10 one. This Yamaha valve ran me about $30. Hopefully it is good quality.
My 85 XV700 has been sold. Thanks for all the help guys. :)
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Re: Manual Petcock you've wanted me to tell you about.

PostAuthor: Jake » Sun Sep 11, 2011 6:17 am

Guys, I've been using the same petcock since I started this thread and it's still working fine for me.
_______________________________________________________________________
“It ain’t what you don’t know that gets you in trouble.
It’s what you know for sure that just ain’t so.”

~Mark Twain
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Re: Manual Petcock you've wanted me to tell you about.

PostAuthor: JasonWW » Sun Sep 11, 2011 6:44 am

I'm still weary of leaving the valve on by accident someday.

One solution is convert to a single carb and put it on the left side. That way if the float should stick, the fuel would flow out the filter onto the ground.

The other is to buy a separate vacuum or electric valve and run it before the T fitting.

I'm still pondering on this.
My 85 XV700 has been sold. Thanks for all the help guys. :)
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