Posts
849
Joined
7/12/2014
Location
GB
Fantasy
866th
RussB
7/10/2017 2:41am
7/10/2017 2:41am
Ive got a bone stock, 10 hour old 2008 Suzuki RM250.
I'm mainly going to be using it for MX but would like to be able to have a go at an enduro every now and again.
I had a go at a Fast Eddy enduro here in the UK yesterday and struggled big time! My main issue was the abruptness of the motor and how difficult it was to get through tight sections smoothly. The bike was also very tiring over the 2 hour period as the RM is a handful in stock form.
I don't want to make any permanent enduro mods, such as porting or base gaskets etc. I'm just looking to get advice on the best bolt on mods for the bike to make it more rideable at an enduro.
I have a 13oz FWW so will use that.
What is the best pipe/silencer to go for?
Any recommendations on gearing?
Can I do much in terms of jetting, ignition timing and powervalve adjustments to smooth the delivery and make it more friendly?
Any advice would be great!
I'm mainly going to be using it for MX but would like to be able to have a go at an enduro every now and again.
I had a go at a Fast Eddy enduro here in the UK yesterday and struggled big time! My main issue was the abruptness of the motor and how difficult it was to get through tight sections smoothly. The bike was also very tiring over the 2 hour period as the RM is a handful in stock form.
I don't want to make any permanent enduro mods, such as porting or base gaskets etc. I'm just looking to get advice on the best bolt on mods for the bike to make it more rideable at an enduro.
I have a 13oz FWW so will use that.
What is the best pipe/silencer to go for?
Any recommendations on gearing?
Can I do much in terms of jetting, ignition timing and powervalve adjustments to smooth the delivery and make it more friendly?
Any advice would be great!
www.karlzracing.com
For comfort I ran an 18" rear and had RG3 rubber mounted clamps with PT 1-1/8 bars.
Of all the mods, I feel the Rekluse made the biggest difference, when you start to get tired and remind yourself you dont need to pull the clutch its so easy just to lug around.
I will start with the FWW and look around for a Gnarly pipe. I have an R-304 but cant imagine the shorty silencer being good for enduro as it makes the bike even more snappy?
I also have a Rekluse clutch system from my RMZ450 (which I'm not using) which will fit into the 250 so will definitely try that as well.
Will report back with any progress.
The Shop
Not tested anything as of yet but will be this weekend.
I'm going to fit the 13oz FWW.
I also picked up an FMF Q Stealth Silencer. It's massive! Nearly 2 inches longer than the stocker. It looks pretty ridiculous but I think it will work well.
I'm also going to add 1/4 - 1/2 of a turn more tension onto the powervalve spring to delay the opening and smooth the power.
I'm hoping to test this before I go to my next enduro race this Sunday. So will report back if I get chance.
I still plan on fitting the Rekluse clutch but would like to spend a day at a practice track with it first before going straight to an enduro race with it
On the flip side, I have the full kit on my YZ and it was a huge PITA to get adjusted because you have to pull the clutch cover off every time but now that I have it set it works flawlessly.
I can't pinpoint which mod made the most difference but I expect the 13oz FWW had the biggest effect. Then the combination of the silencer and 1/4 turn more preload on the powervalve spring really tamed the hit and made the transition into the power a lot smoother and more manageable.
I finished 54th out of a total of 144 riders, which I'm pretty damn happy with considering this was only my 2nd ever enduro!
Definitely need to sort the suspension next. Motocross valving on a 3 hour enduro race is just brutal. I'm sore today!
mattman631 - I really wish I'd have fitted the rekluse now! I have experience with it from using it on my 450 but just had a bad feeling about taking an untested clutch system to a race. Plus I am unsure of fibre and basket condition as I haven't opened up this clutch yet. But it will definitely be the next thing I do with the bike as it will make the bike even better
I won't be at Tyn Twll though unfortunately.
I've got 0 experience with RMZ250's. I've never owned or even rode one. So don't have much knowledge with the KYB air forks either.
I do have an RMZ450. Although I've never done an enduro on it. I would definitely recommend experimenting with the engine mounts, particularly the upper mounts. Remove one of the 2 bolts that screw into the frame on each side. This allows the mount to twist and flex a little, which will help soften the feel of the frame and take the edge out of the nasty stuff. I often do this on my RMZ at choppy, hardpack tracks and find it makes a difference.
I would also recommend going up 1-2 teeth on the rear sprocket to help with the lower speeds of enduro. Run thick tubes or mouses. and a set of handguards are always nice as well.
Nick.
Yep that was me! I will be doing more Cotswold enduros so will no doubt see you at one soon enough.
Post a reply to: Basic RM250 Enduro/Woods Mods