Bloody thrust washers.....

[BenR]

Hello BCF I'm currently restoring an old suzuki RG125UN wolf. Having just received the barrel back from re-plating I'm trying to put it together. I ordered two new thrust washers from the lovely people at the tuning works but I can only fit one. There is absolutely no clearance to fit both of them so my question is can I just fit the one? Will anything untoward happen by running only one thrust washer? Ta in advance.

[Bunny Lingus]

[BenR]

Hi thanks for the reply I should've said it's the ones on the piston itself sorry. I've got a feeling the small end bearing is too big although I ordered for the right bike.

[Bunny Lingus]

[BenR]

Thanks dude I'll try it without the washers as you say if it's too noisy or too much vibration I can always strip it again before the barrel gets wrecked a top end gasket set doesn't cost a great deal. I've a feeling it's more to do with the piston being too narrow where it fits to the gudgeon pin or the small end bearing is too wide (slightly). Both parts come off of eBay that should say it all really.

[BenR]

Is it possible to machine the inner surfaces of the piston down without weakening it? It's only out a few thou.

[bladerunner]

I wouldn't advise running without as the Suzuki's use the thrust washers to keep the condos in line ..ie massive big end side float compared to yams etc. Last batchof Suzuki pistons I got for the RGV were crap with under size ring grooves etc so wonder if you have a similar issue
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Current bikes...cbr929, KDX200's, Rd125lc mk2, RGV250's

[bladerunner]

Also forgot to add if it's had a replete that you need to either relieve the plating on the exhaust bridge or the piston at that point or you will be suffering seizure when it's hot! Depending on who sent it off for you....some do it for you...others don't so you'll need to do it yourself.
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Current bikes...cbr929, KDX200's, Rd125lc mk2, RGV250's