top end kit trail boss 250
Jul 24, 2008 | 06:27 PM
#2
Weekend Warrior
Joined: Jul 2008
Posts: 4
Likes: 0
top end kit trail boss 250
Are you trying to install a reed cage on the 250?! I've never seen a set up like that available but have thought about building something like that many times. Those motors can really rip with some porting and planing the head.
Jul 24, 2008 | 07:38 PM
#3
Quad Patrol
Don't let the hp numbers fool you. Its all in how you get it to the ground. Clutching clutching clutching!
Don't let the hp numbers fool you. Its all in how you get it to the ground. Clutching clutching clutching!
Joined: Apr 2000
Posts: 6,688
Likes: 1
top end kit trail boss 250
HPD used to make a reed conversion for the 250s
But you can get good power by porting the cylinder and milling the head .020
But you can get good power by porting the cylinder and milling the head .020
Jul 25, 2008 | 09:09 AM
#4
Weekend Warrior
Joined: Jul 2008
Posts: 4
Likes: 0
top end kit trail boss 250
If you are really looking to make some power out of the 86 trailboss, look at the 87 cyclone service manual. the cyclone was basically a factory modified trailboss engine. The head on the cyclone has .060 to .080 less squish than the trailboss. The timing is advanced almost as far as it will go and it runs a 34mm carb instead of the trailboss's 28mm. The cylinder is ported much more than the trailboss as well.... These things as well as the correct exhaust and clutching and you should be able to beat some stock 400Ls in a drag race.
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