Doctorot

Not a problem area for a stock engine, but for the brave souls going for bigger power its a small difference that might prevent the rod from creating additional crankcase breathing.

interesting, so its a secondary pump system just for the cooler. Very tidy bike as well. I see you have it badged as a 865, what pistons are you running? other engine mods? I’m in the middle of a big bore build myself. Nice work. thanks for sharing.

-vic

Hi Chris. I’m interested in your oil pump setup, are you bypassing the filter? Can you elaborate or show some photos? The last engine I built I had a miss-shift and violent over rev resulting in oil pump cavitation and ended up with rod knock shortly after. I have been considering running a stand-alone electric oil pump to avoid this in the future.

-Vic

thanks fellas.

-Gizburn, its a custom ignition cover I designed and cast myself.if you want to see my complete documented build you can find it here> https://kzrider.com/forum/11-projects/598240-saving-a-1980-750-twin?start=0

the casting process starts on page 22

Here are some pics from my ongoing 906cc engine build with custom JE pistons and…[Read more]

Hey Michael, I sent you an email and never heard back. Maybe it went in your spam?

Hey Michael

thanks for that link, very cool build for sure. i wish google translate worked on handwritten text as it looks like there is a ton of info there. I haven’t been able to find what his static compression was, are you aware if he has written it in the notes?

thanks for sharing

-Vic

Wow, great build!

So many questions as I am in the process of doing my own 906cc engine! Sorry if it seems overwhelming but its cool to see someone else hot rodding these engines.

The “dry block” – because you are bypassing the oil jets between the cylinder and the head how do you increase oil pressure after the crankcase to the head?

Have you…[Read more]

Thanks for the welcome guys.

I have been in touch with Arias pistons and without sending in my exact requirements they said it would be around $160 USD per piston with a minimum order of 4, discounts for more. That is not bad at all, and I think I may be pursuing this as an option. After reading through Michael’s big bore thread I found the link…[Read more]