87 Vmax Project

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chrisc543
Posts: 3
Joined: Tue Sep 08, 2015 3:39 pm

87 Vmax Project

Post by chrisc543 »

Well I've began trying to get my 87 Vmax to run for a second time tonight. Its been parked in a garage or shed for the last 4 years after I acquired it.

A little history on the sled it was given to me by my second cousin about 4 years ago. He said it was recently rebuilt and parked. I being young/dumb/excited dumped gas and oil in the cylinders and started pulling. Later to find out that a carb was seized and a rats nest in the airbox. It sucked in tons of crap and only ran for like 30 seconds.

So I went online and ordered 44mm carbs as bigger is better, mentality of a young adult. Once I received them I realized the throttle cables wouldn't work. It was at that time I gave to a friends Dad that specializes in vintage sleds to take a look at it. He got the carbs hooked up and told me I'd need a rebuild most likely. Didn't have money at the time so got sled back and it sat.

My wife brought up this year after we have bought our house and our kids are getting a little older she thought it would be a cool project to do together. So tonight we began took airbox and carbs back off. Put Mystery Oil in cylinders and pb blaster on intake side of carbs.

My questions are as follows:
1. Any good topics for how to hook up 44mm carbs? Or should I find a set of 38mm? The 44mm do not have spots for carb switch. Can I bypass?
2. Should i just remove engine and rebuild since it sucked rats nest into it?
3. If pistons measure out with micrometers, rings should do?

We are not looking to make it perfect. Just looking to make it worthy to drive around on some trails. No long trail days. Definitely do not want to spend thousands making it perfect.
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chrisc543
Posts: 3
Joined: Tue Sep 08, 2015 3:39 pm

Re: 87 Vmax Project

Post by chrisc543 »

Well tried to turn over a little bit from the clutch bolt but it just came loose. Does the engine turn clockwise or counterclockwise from clutch side? Is there a bolt on the other side to try and free it up from? Trying to get to turn to test compression to see if I have to fully tear down or not.
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Vmax540
Posts: 1521
Joined: Thu Jan 26, 2006 8:36 pm
Location: Shippenville Pa.
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Re: 87 Vmax Project

Post by Vmax540 »

Some good reading here... On a 30 year old sled it would be very wise to do a complete tear down.
http://www.vintagevmax.com/
http://www.vintagevmax.com/86porting.htm
"Larger carbs will not increase airflow or horsepower on this engine."
viewtopic.php?f=2&t=1529
https://www.youtube.com/watch?v=PFb6NU1giRA
"I prefer dangerous freedom over peaceful slavery." Thomas Jefferson
chrisc543
Posts: 3
Joined: Tue Sep 08, 2015 3:39 pm

Re: 87 Vmax Project

Post by chrisc543 »

Well clutch puller is on its way so I tore down more preparing to remove engine.

I did have a question come up. How do I remove whole track from bottom of tunnel. The manual I have does not explain the process. I removed the drive chain. Didn't know if I should flip sled on side or jack up.

Any advice is appreciated.
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Vmax540
Posts: 1521
Joined: Thu Jan 26, 2006 8:36 pm
Location: Shippenville Pa.
Contact:

Re: 87 Vmax Project

Post by Vmax540 »

On the side is the best way and B.T.W. heat, let cool, tap with a hammer and soak with penetrating fluid is the only way to loosen the 3mm set screws in the shaft.
https://www.youtube.com/watch?v=PFb6NU1giRA
"I prefer dangerous freedom over peaceful slavery." Thomas Jefferson
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