Hi All, Chasing a FZR250R 3LN1 - 3LN3 engine to replace the track bike engine. Require head, barrels and bottom end. Everything else will come from the track bike. Australia only please. Queensland would be great. Prepared to buy complete bike at right price.
Out of interest, what went wrong? I know both @gregt and @Mike Green have some advanced insights on preparing the cranks in their various threads
I have a Zeal that you can have.... all you would need to do is pay for the transport from Sydney.....not sure how the engines differ though. It does have 100,000 km on it though
Bottom end let go 'again'!! I will take a look at the threads you mention. I have also been told of some other 'tricks' to ensure better oil delivery.. Thanks @ruckusman.
Yes, I'm not certain where the information lives - @Mike Green also has a large thread on Kiwi bikers I think it is about his turbo half and I know both Mike and @gregt have discussed radiusing the oil feeds to the mains and big ends to improve flow - but I don't want to misquote them and steer you wrong There's a really serious depth of knowledge between those two Now one thing which I cannot find the original source for is putting a shim in the oil pressure bypass - it was related to FZR400's because the oil pressure bypass is very close to the oil pressure at high RPM Wow I just found it, I was searching for oil pressure bypass, the correct search term was oil pressure relief Mentions the oil pressure at peak RPM being close to the relief valve working pressure https://bdkraceeng.co.uk/tc/products.php?357&sid=5ekskbctc0oqduumtsep0unk66 Mention of using the shim in an FZR400 https://www.gtamotorcycle.com/xf/threads/fzr400-winter-overhaul.178050/page-4
