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how to???

I like the SRV 540 Idea! The SRV was in a higher state of tune as well as having more displacement. Because asking how you make an Exciter faster is kinda like askin' "how do you make a Chevette faster?". You put a 350 in it, of course! You'll never be able to make the Exciter "FAST" as the cylinder...
by ZR800XC
March 4th, 2006, 12:39 pm
 
Forum: Vintage Sleds Board
Topic: how to???
Replies: 18
Views: 1229

how to???

A buddy that I used to race with was always intrigued by the 440 reed valve fanners. He always raced GPXs and really thought the Exciter had potential beyond a little kids sled. One day, it hit the drawing boards. They tried everything.....I mean EVERYTHING. At one time they had GPX cylinders on the...
by ZR800XC
March 3rd, 2006, 4:27 pm
 
Forum: Vintage Sleds Board
Topic: how to???
Replies: 18
Views: 1229

What does this pull or install (pic)!!!

Tool kit for a single cylinder Rotax, check out the flywheel puller....it's uncanny!

[IMG]http://i36.photobucket.com/albums/e46/Zracers77/70tntoly_tools.jpg[/IMG]

Ding, Ding, Ding, Ding..I think the mystery is solved!
by ZR800XC
March 1st, 2006, 11:43 am
 
Forum: Vintage Sleds Board
Topic: What does this pull or install (pic)!!!
Replies: 8
Views: 516

What does this pull or install (pic)!!!

The long puller looking things are probably piston stops...You screw them in to stop the piston to keep the crank from rotating while you tighten the flywheel puller. The straight one would work on straight plug heads and the angled one would work on angle plug heads. ;) Set a spark plug next to 'em...
by ZR800XC
February 28th, 2006, 2:27 pm
 
Forum: Vintage Sleds Board
Topic: What does this pull or install (pic)!!!
Replies: 8
Views: 516

Piston Burn-Down Problems, please help

Also, being "built to the nuts" and all. I'm sure you have a wide exhaust port...Do you have a good chamfer on that baby? Or is it squared right off? And I read on vintagesnowmobile.com you're running 25:1? That's too much oil, can contribute to piston burning.
by ZR800XC
February 25th, 2006, 4:55 pm
 
Forum: Tech Talk
Topic: Piston Burn-Down Problems, please help
Replies: 18
Views: 2287

Piston Burn-Down Problems, please help

could be your midrange jetting is off. If it didn't blow a hole through the piston, then it didn't happen at WideFukinOpen. It most likely happened upon deceleration at a partial throttle position that didn't adequately fuel the engine. If you're "modded to the nuts" than you need to adjust your par...
by ZR800XC
February 25th, 2006, 10:45 am
 
Forum: Tech Talk
Topic: Piston Burn-Down Problems, please help
Replies: 18
Views: 2287

Vintage sleds

There's not really a website that has a list of what's rare. You can look at classified adds and kinda get the picture of how rare something is by it's price. Generally, your high production trail sleds are under 800 bucks. Some higher performance lower build number trail sleds will be a bit more. Y...
by ZR800XC
February 19th, 2006, 1:40 pm
 
Forum: Vintage Sleds Board
Topic: Vintage sleds
Replies: 2
Views: 192

belt measurment, getting pizzed!!!!

as far as the 1082, you could run an Untilmax3 which should have tighter tolerances, but is 3/16" shorter...1254320U3. I've found the Gates Xtreme belts are better. You could use the 25X4320, which is 1/4 inch shorter. Just the way the chaincase bolts on your 340 F/A you could make it work with litt...
by ZR800XC
February 14th, 2006, 2:02 pm
 
Forum: Vintage Sleds Board
Topic: belt measurment, getting pizzed!!!!
Replies: 7
Views: 250

I Bought The 2nd Sled - Please Help Me Diagnose Minor Things

I've had one Bravo through the years and mine did the same thing. The engine moved quite a bit. If this is right I don't know, but I know mine did it. Keeping the engine somewhat stationary will provide better performance by keeping the clutches aligned and the C.D. correct.
by ZR800XC
February 13th, 2006, 2:46 pm
 
Forum: Vintage Sleds Board
Topic: I Bought The 2nd Sled - Please Help Me Diagnose Minor Things
Replies: 5
Views: 349

Rebuilding Engines

OEM ski doo base gaskets come in different thicknesses, at least they do for newer engines, 809-699-670-583 for sure. They come in 0.3, 0.4, and 0.6 thicknesses...Crank Shop makes a cylinder spacer kit, cheap alternative to porting suposedly. I always wondered how efficient it could be having your p...
by ZR800XC
February 13th, 2006, 11:49 am
 
Forum: Vintage Sleds Board
Topic: Rebuilding Engines
Replies: 17
Views: 787
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