OzVMX Forum

Marque Remarks => Suzuki => Topic started by: zman on November 11, 2012, 08:41:04 pm

Title: more bottom end
Post by: zman on November 11, 2012, 08:41:04 pm

hey all just wondering how to get more bottom end out of my 82 rm250. i love the power but its got nothing down low or do i just have  to live with it

Title: Re: more bottom end
Post by: Lozza on November 11, 2012, 11:28:19 pm

Increase the compression ratio, lower the cylinder and add a 20mm spacer between the pipe and cylinder

Title: Re: more bottom end
Post by: Stevo17 on November 12, 2012, 11:12:28 am

I had boyesen reeds in mine which didn't help. I replaced them with stock reeds and it made the bike much smoother and tractable. It was still crazy in the top end but much more rideable.

Title: Re: more bottom end
Post by: D project on November 12, 2012, 09:01:20 pm

Clutch it ;D

Title: Re: more bottom end
Post by: Scunge on November 12, 2012, 09:09:37 pm

Wack a new piston and rings in it.

My 82 was the holeshot king!

Title: Re: more bottom end
Post by: zman on November 12, 2012, 09:14:45 pm

well as a mate who rides an 85 yz250 said yesterday at our practice day its a125 on steroids. yeah your right d project ya gotta clutch it ya just get sick of it  but i will take on lozzas idears

Title: Re: more bottom end
Post by: motomaniac on November 12, 2012, 10:02:41 pm

Sell it and buy a 82 model CR250 , heaps of torque! ;D 83's ain't bad either.

Title: Re: more bottom end
Post by: JohnnyO on November 12, 2012, 10:12:26 pm

Quote from: motomaniac on November 12, 2012, 10:02:41 pm

Sell it and buy a 82 model CR250 , heaps of torque! ;D 83's ain't bad either.

83 CR250's are a great bike!
The 84 RM250 cylinder is more torquey with more bottom end than the '82.
Machining 20 thou from the bottom of your '82 cylinder will help in 2 ways by lowering the exhaust port and raising the compression..