20 Tips on a 2-Stroke Top End Rebuild with Phil Valdez

We took a trip over to the ‪@PrecisionConceptsRacing‬ shop and followed Head Mechanic Phil Valdez's 2003 KX125 to KX144 top end rebuild. Take note of these 20 tips to help you along with your next 2-stroke top end rebuild!

[@mikebrown41182]

Eric Sorbys old PC 125 kx. Valdéz have truly kept it in pristine condition 👌🏼

[@dirtyburd71]

Just reassembled the top end on my 79 husky 250cr. Wiseco piston and rings of course! The engine has been sitting dormant for almost 20 years. Got it back in the frame (replacing the 390cr engine that took it's place years ago) and took 4 kicks and it's alive again! Great video with good advice
Thanks!

[@walterandrews3077]

Always wash cylinder with hot soapy water and lube immediately to prevent flash rusting.

[@rufusrunsgsp4610]

At about the 4-minute mark you glaze over the surface prep, Im very curious because many use razorblades, some 3m scour pads, and such. But I do not want the gasket to fail. The razor blades leave tiny little scratches which can be a problem. Thank You!

[@criticalthinking3709]

The Wiseco piston set I got specifically said it didn’t matter if rings are facing up or down?

[@BikerBenny]

7:33. I dont know if its necessary or not cause the torq is so low but maybe do it in two steps. 5 or 10ft pounds then finishing torq

[@RandomLifeBOXING]

Broh.... What about the dots on the chamber... If we make dots with a marking-drill then what's the use of that...

[@kirbylee57]

Man I dig that music. "I like to put oil all over stuff" too.
This video was helpful, but I expected Wiseco to have a little more professional video, like Rocky Mountain's.

[@teacherpaco]

Does wiseco make a piston for the Suzuki ax100? It’s a 50mmx50mm

[@user-ys1eo2fc9x]

What are you living it with

[@reallyitzrowe]

is the piston ring pre gapped or did you have to gap it with a feeler gauge

[@bigguy-ow6rd]

sometimes they come pre gapped but its always good to check with feeler gauges

[@reallyitzrowe]

@@bigguy-ow6rd thanks bro

[@joaquinmoreno8151]

What are you using to lube the parts?

[@bigguy-ow6rd]

2 stroke oil

[@andya857]

Great video, but, the music sucks..

[@wisecopistoninc]

Royalty-free music typically does.

[@legenderekonwheels]

These arent tips. This is instructions on how to reassemble a 144 big bore kit on a kx125

[@mikeford5106]

SHITTY ... "music" !!!

[@pitsterprohill1595]

Wisco sucks 😕 they sold out

[@jimbo7042]

Great music but the video sucks