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2014 Yamaha XT660Z with the following extras: Givi Crash Bars Barkbusters Wide Footpeg High Windshield Headlight Guard Adjustable Shorties Clutch and Break Lever Auxiliary Power Point Tail Tidy Aftermarket Bezerker (Scorch) Exhaust DNA Stage 2 Filter Setup High Performance Open/Close Circuit...

Very very easy. Sent from my Xperia Z3 using Tapatalk

Header back from Tim Bosson Engineering. Honed taper cylinder, intake tappet replaced, and all reseated. Sent from my Xperia Z3 using Tapatalk

This can help too with the bearings, worked on my brothers klr650 with the same situation where a guide pipe in the wheel hub prevent us knocking the bearing out from the other side, here is what we did: Remove the bearing seal and start pulling out the ball bearings soft metal plates that...

Made some progress last weekend, just did not have time to post yet, here they are: Frame is in for powdercoating. Still waiting for Cylinder and Header from engineering shop. Sent from my Xperia Z3 using Tapatalk

Bappas, you were right (that is some fine eyes you have) the existing piston is a .50, so I will be looking for the .75 piston then.

That is so kind of you @Swanniebraai thank you very very much!

Oh yeah, much respect for him, helpful and really clued-up. The issue is manufactures are like a sealed book when it comes to their designs, they figured everything out and even proved DynoJet that their CO2 resistance plug does not work, they pulled the product back then and came up with...

I am happy that it helped out someone :)

Nah Babbas, I actually have no idea where to find one. Will ask around as soon as I have time. I live close to Motaque Gardens in Cape Town, Buying parts from Craigs Motorcycle Spares.

Ok so I am waiting for topend parts and will also hand in the cylinder to get bored, valves etc. Sent from my Xperia Z3 using Tapatalk

Yeah, I decided to not split the bottom half, overall the conrod has almost no up and down play. The main bearing looks and feel solid, so I am going to just do the topend, piston, cylinder and rings, timing chain, except if there is a good reason to dig deeper. Don't fix whats not broken may...

Yeah sorry I am talking about the needle bearing on which conrod (big side) runs on from the flywheel, or is there no bearing there? I had a guy around that rebuilds classics, he recons there is no play on that conrod. If I am not in need to split the case I am going to start reassembly. Sorry I...

Ai dit is jammer. Polish is nog 'n manier maar ongelooflike baie werk.

I just had to share this: https://www.youtube.com/watch?v=r8lCGTltAm4

Here the blowby can be seen on the piston. Sent from my Xperia Z3 using Tapatalk

@Bappas The conrod up and down (also checked on youtube how to) has no play, the main bearings also seems very solid and the engine so far looked really good. I will be replacing as with your suggestion the the piston and do the head. With this: Clutch plates (they are 3mm service limit is...

So if you pull that sprocket off, can you refit it? Sent from my Xperia Z3 using Tapatalk

Hi Bappas what do you look for in a damaged piston to know that it is damaged. I am trying to figure out how to evaluate the situation. Does 0.50 mean its been bored already, I do not think this engine was ever opened. Also if I replace the piston do I replace the conrod too? If I take it to...

Actually you seem to be quite right.