OzVMX Forum

Marque Remarks => Suzuki => Topic started by: maxi81 on January 18, 2011, 09:29:44 pm

Title: Advice needed
Post by: maxi81 on January 18, 2011, 09:29:44 pm

I have a RM 400T and recently I took my crankshaft to br rebuilt at Serco in Brisbane. Alan rang me up a few days ago and told me I may need a new rod as it has two pit marks in the big end. I contacted a few suzuki dealers and they don't have any NOS rods and it looks like I may have trouble finding one. Serco did say that if I cant find a new rod they can use my old rod but does not know how long it will last. As I will not be racing the bike he said it may last a few years or maybe for ever, who knows.

Any advice on whether I should use the rod I have?

Title: Re: Advice needed
Post by: LWC82PE on January 18, 2011, 09:59:16 pm

Bore out the eye and press in a new ground and hardened ring. Done it heaps of times when rods have been NLA. Not sure if theres enough meat in the RM rod though. whats the ID & OD?

Title: Re: Advice needed
Post by: Lozza on January 18, 2011, 10:12:15 pm

Do you have or can you get the rod dimensions?
Crank Pin diameter
Big end eye dia
Small end eye dia
centre to centre length
widths top and bottom

Title: Re: Advice needed
Post by: maxi81 on January 18, 2011, 10:15:21 pm

   Rod centres   135mm
        B/E   ID         30 mm
        S/E   ID         21.95
        B/E width       20.05
        S/E width       21.95
        B/E pin OD      24mm
        S/E pin OD      16m

Title: Re: Advice needed
Post by: Lozza on January 18, 2011, 10:39:33 pm

measuring with digital calipers? ;D
Sure that's not a 18mm gudgeon ?

A KTM 360/380 has a 135mm rod but 17mm big end width see if Serco have some 2.5mm wide thrusts? If no BBI in Perth will have them.

http://www.ktmworld.com/ktm_oem_parts_schematic.asp?schematicId=37787&itemNumber=0888030050




Hmmm wonder why Serco can't do this type of thing?