Dan's 1VJ resto mod

cadno
Almost there
Almost there
Posts: 775
Joined: Fri May 06, 2016 9:38 am
What Bike or Bikes Do You Own?: lot's of Yamahas, quite a few Montesas, two BMWs a KTM and a GPZ1100
Previously Owned Bikes: Far too many to list
Location: Bangor UK

Re: Dan's 1VJ resto mod

Post by cadno »

Had my brother up over the weekend, and managed to get him to give me a hand in the garage.
An afternoon spent on the following.
  • Recheck all the wiring and make sure we're getting a spark....all good.
  • Check all oil tank and oil unions before pouring oil in....all good.
  • Pour oil into tank....not good
I had quite an amount of oil come from the bottom of the tank, so we drained the tank and checked the three O rings on the bottom oil pipe, expecting one to be missing. All good, although I had missed out the mesh strainer. Borrowed a strainer from another bike, refitted everything, torqued to 11Nm (should be 10Nm) and refilled with some more oil.
Same again :bigeek:
Striped all off and compared to another oil tank I have. It appears that original oil tank has an extremely small depression around where the bottom flange mounts which then allows the leak. I fitted the second oil tank and you could see straight away it wasn't leaking. So I'll have to try and improve how flat that area is on the original tank.
Now with an oil tight engine we tried to get oil flow. This was done by removing the spark plug and cranking the starter hoping to see oil on the bleed above the oil filter. Nothing came, so I removed the right side case and checked, there was a very small amount of oil by the strainer and oil pump but nothing else. Checked all the galleries for blockages but found nothing and tried cranking again. This time loads of oil came out, so I cleaned up and put the side cover back on. Cranked again and a geyser came out of the bleed screw, all good.
Then on to starting the engine.
Plug back in, a small separate auxiliary fuel tank with fresh fuel.
I left the fuel turned on and let the fuel fill the float bowls, pressed the starter switch on the Motogadget controls, and the engine started immediately.
It's always a massive point in a complete rebuild and even better when it starts on the button perfectly. To say I'm made up is an under statement :confetti:
We started and stopped it a number of times. The Motogadget is set up for a single press of the right handlebar top button to start the bike, or remotely off my phone and a double tap of the same button switches it off.
scottieh
Financial
Financial
Posts: 796
Joined: Wed Mar 30, 2011 3:58 am
What Bike or Bikes Do You Own?: 1988 XT600Z 3AJ
1987 XT600Z 1VJ
1985 XT 600
1980 TT500
1980 XT250
2001 KTM 300XC
Previously Owned Bikes: 1982 XT550
1981 TT250
1989 Yamaha Virago 750
1994 DR650
1980 Suzuki GR650
1997 KLR 250
1986 Honda Spree
Location: Salt Lake City

Re: Dan's 1VJ resto mod

Post by scottieh »

5 years in the making, nice work. Now break the engine in proper with a hard ride and post some photos!
cadno
Almost there
Almost there
Posts: 775
Joined: Fri May 06, 2016 9:38 am
What Bike or Bikes Do You Own?: lot's of Yamahas, quite a few Montesas, two BMWs a KTM and a GPZ1100
Previously Owned Bikes: Far too many to list
Location: Bangor UK

Re: Dan's 1VJ resto mod

Post by cadno »

where did those five years go :bigeek: :omg:
Scumfrog
On the ladder
On the ladder
Posts: 127
Joined: Sat May 15, 2021 7:31 am
What Bike or Bikes Do You Own?: 1VJ
59x
43F
Previously Owned Bikes: quite a few off and on.
Location: Cymru

Re: Dan's 1VJ resto mod

Post by Scumfrog »

cadno wrote: Sun Jan 19, 2025 9:31 pm So here we have some petcock types.
Starting from the right that's a KTM part that fits.
Middle is what I think is the correct original 1VJ tap, its a little longer and drops the lever lower. Making it easier to use whilst riding.
Left is what I think is off a later Tenere probably 3AJ?
Image

going back to the correct fuel tap question..... neither of those are correct,

This is what I was thinking when I recalled the correct 1VJ one - you'll see the slight drop revealing a number - maybe a batch number? Incidentally there was no reserve on the 1VJ RHS tap.


Image

the 3AJ is higher up, no room for the number.

Image
Post Reply