Replaced the hard plastic fuel lines today.

[donald branscom]

I am building a bike with a VF100OR engine. today I rebuilt all the carbs and got rid of all those @$##$$#%$^ hard plastic fuel lines with o rings. what a stupid idea!!

I replaced all the plastic fittings with brass hose barbs. I used 1/8 male pipe thread fitting with 1/4 inch hose barbs for the float bowl vents. Then I drilled the float bowl fuel fills with a 7/16 drill and used 1/4 inch pipe thread brass fittings with 1/4 hose barbs. (common size.) This is not a job for a beginner.

I removed the float bowl and float ,needle ,seat etc., first.
I changed the position of two of the float bowl fuel fill lines.

[donald branscom]

Well I put the carbs on but I still do not like them. I also do not like those springs in the throttle cross over linkages. Just a lot of mess and complication.
I took the whole mess off and will make a whole new rig with different carbs.

If you want to rejet you have to take the whole mess off and take them all apart etc.,.No wonder the new generation bikes went to transverse 4's.

[NorcalBoy]

If you want to rejet you have to take the whole mess off and take them all apart etc.,.No wonder the new generation bikes went to PGM-FI

FIXT

[donald branscom]

Yes I agree the new fuel injection systems are much more easily tuned. However the parts are VERY expensive. Like those $1500 dollar garbage can exhausts, INSANE!! But yes the new bikes are better in many ways.

By the way if any VF1000 0r VF1000R owners want that set of carbs for parts whatever I will sell them for $30 and that is to cover the shipping and packaging. Many good parts on them too like the needle jets and floats.
and those two little springs that go between the shafts.

Here are the new carbs I got. Two 40mm 1988 Kawasaki 1500 Vulcan SE carbs and they came from a v twin so the intakes are angled correctly. Since the engine fires 1-3-4-2 I will make 2 intake manifolds that connect cylinders 1 and 3 and another manifold connecting 2 and 4. One carb will go to each manifold.

The main jets are 118's so I will up those to 125's to start and see where that gets me.

[donald branscom]

Well today I found out the guys at the salvage yard did not know what they were talking about -(again).
The carbs were NOT from a 750.
The carbs are from a Kawasaki 1500 1988 model. So that means I should not have to increase the jet size. I will just put them on and see how they work .
If a 1500 can run on a 40mm carb then the VF1000R should work fine.

[crustyrider]

Well today I found out the guys at the salvage yard did not know what they were talking about -(again).
The carbs were NOT from a 750.
The carbs are from a Kawasaki 1500 1988 model. So that means I should not have to increase the jet size. I will just put them on and see how they work .
If a 1500 can run on a 40mm carb then the VF1000R should work fine.

why not try to manufacture a manifold so all you have to use is a small four barrel? nice work by the way... wish I would have thought about the brass fittings it would have saved me...of course I would have had to drill it all with a hand drill

[donald branscom]

why not try to manufacture a manifold so all you have to use is a small four barrel? nice work by the way... wish I would have thought about the brass fittings it would have saved me...of course I would have had to drill it all with a hand drill

You know I thought about that actually but I do not know if those 4 barrel carbs are made to lean on such extreme angles like a motorcycle does.
But we know the Boss Hoss V-8 powered motorcycle works.

Anyway i am waiting for some stainless tubing with pre made bends arrives and I can start fabricating the manifold. I realized I should hook cylinder 3 and 4 together going to one carb, and cylinder 1 and 2 to the other carb.
I did find one large motorcycle carb that was very nice at the salvage yard but it did not have an accelerator pump and I have read that larger engines can stumble on acceleration without that feature.

The newer carbs with accelerator pumps like the Kawasaki 1500 v twins have not shown up at the salvage yard or Ebay yet. Probably because the older guys that ride them are more carful to stay out of accidents. But the sport bike parts are stacked high.

[crustyrider]

it would have to lean..... just biuld a minifold like a V-8 would use .... so it sits in the valley so to speak......the only problem would be the fuel tank .....so you would have to use a carb that was really short....

[donald branscom]

it would have to lean..... just biuld a minifold like a V-8 would use .... so it sits in the valley so to speak......the only problem would be the fuel tank .....so you would have to use a carb that was really short....

Yes, it is fun to contemplate all the possibilities. With more money I would be in big trouble. I would have a large junkyard at my house. HAHhahahha

[donald branscom]

Here is what I have so far. Just waiting for some special clamps and one boot.
The stock rubber boots were hard as a rock and had cracks in them. I am getting Turbo silicone high temp boots. Also in the next 3 days I am supposed to be getting the engine valve covers and side case covers back from being polished. Then I can finally get the engine bolted in place but I need those valve covers first to make sure of the clearances between frame and engine.