DT125R ARCHIVE

Getting a flywheel would slow it down if it hasn't got one already?

Or maybe I'm completely wrong...

What makes you think its not the standard cylinder cal?

Arent the barrel and cylinder two different things? You know what im like with engines cal

Where the hell am i suppose to find a cylinder? None on ebay i'll have to go oem but its all from america

Obviously get one for your year, but there are plenty here to choose from...

 

http://www.ebay.co.uk/itm/RM-250-CYLINDER-BARREL-BORE-2000-99-1999-B111-/151657193783?pt=LH_DefaultDomain_3&hash=item234f792137

 

http://www.ebay.co.uk/itm/Suzuki-RM-250-barrel-jug-off-2001-01-rm-250-needs-replate-/201340574323?pt=LH_DefaultDomain_3&hash=item2ee0d55a73

 

http://www.ebay.co.uk/itm/Suzuki-RM250-RM-250-Need-Sleeved-Engine-Top-End-Cylinder-Barrel-2004-2005-/181746313692?hash=item2a50eca9dc

 

http://www.ebay.co.uk/itm/Suzuki-RM-250-barrel-jug-off-2000-00-rm-250-good-lining-has-no-power-valves-/191588513732?pt=LH_DefaultDomain_3&hash=item2c9b90b7c4

 

http://www.ebay.co.uk/itm/Suzuki-RM250-RM-250-Need-Sleeved-or-Replated-Engine-Top-End-Cylinder-Barrel-1999-/181749360294?hash=item2a511b26a6

 

Just a suggestion anyway. There are loads of the net. You just have to look.

 

Bare in mind most of those wanta replate, which is not cheap. That second before last one says it doesn't, but doesn't come with powervalves. You should be able to use yours.

 

It's more expensive but a replate is £200 so it's actually a cheaper option.

 

-- Edited by Calum122 on Wednesday 27th of May 2015 08:00:15 AM

Would seem so. A quick look o the web, or ring up a Suzuki Dealer, or AJSUtton maybe? SHould give the same part number : D

Literally just new base gasket, new piston, rings, small end bearing, gudgeon pin and then take the barrel off and the new barrel on. On a motorcross bike shouldn't take more than an hour with a cost of about £50. Really simple mate, and if you got a two stroke motocross bike then this is something you should be familiar with as they need to be done after x amount of hours anyway. When racing this would be done like every other if not every race.

Literally, easy. The only thing you can fck up is putting the piston in the wrong way round.

Mixed opinion on this. If it were a road bike I'd go forged Wossner. Bit more expensive but you get what you pay for. Mx could go Mitaka, be about £40-50. It's not much. Or go OEM. It's all preference. I don't know what the MX lads use. Serious people will swear by a forged piston. A lot of people who ride mx casually will swear by Mitaka. Some will use OEM.

Again, mx you need to change the piston, often and preferrably before it seizes, so I'd be half tempted to go Mitaka with the fact in mind I'd do another one before the end of the season, depending how often you ride.

2strokemx wrote:

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Allright cheers

So cal earlier you mentioned a replate, does this mean i can get the cylinder/barrel replated to return it to normal? What is a replate

-- Edited by 2strokemx on Wednesday 27th of May 2015 03:14:27 PM

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http://en.wikipedia.org/wiki/Nikasil

 

http://www.poetonaptec.co.uk/

 

A method of protecting the bore from damage. There are other methods of doing this, DT's for example you have a steel liner in the middle that protects the aluminium barrel. I've seen on higher application motors, Nikasil plated bores.

 

This method requires no steel liner, instead electrostatically plated bores coated in Nikasil allow you to run a piston on an aluminium bore without a steel liner. Only protected by the plating.

 

These types cannot be rebored. They are replated. If you damage the bore significantly then it will require welding. If an oversize piston is available then it's possible to bore and plate up.

 

But read those links if you want more detail.

 

Looks like the same as the ones I sent you mate. As said you've got a v force reed block which is not always standard on bikes

Allright cheers for the offer james im sure my dad kinda knows what to do but whether he wants to or not

m.ebay.co.uk/itm/391153859145

What do you think guys should i get this one? Offer £200 i spose

Yeah mate that's crisp. That's not scratches, they're honing marks. Look allow piston ring seal.

Yeah looks lovely mate.

They look like the head gasket mate. One for the combustion chamber, one for the coolant jacket.

Still need base gasket, powervalve, exhaust and maybe something else.

That's the gudgeon pin. The small end bearing sits in there and that goes through the small eye of the connecting rod.

Yeah looking sweet. Notice that Arrow, that needs to face the exhaust port. Don't forget that.

Scratches are fine mate. It won't have any effect.