Is it worth sticking the bigger 05-06 sump (with pick-up) on an 03-04 and shimming the pump? Less windage and a few more horses or oil starvation and associated joys?
The bike's engine has a few mods, all little things add up is my reasoning for this one……...and it's cheap...if it works.
Last edited by greenmeeny; 12-10-2012 at 05:56 PM.
Kawi said they reduced losses by regearing and modifying the oil pump. Less losses = less powerful oil pump = less pump displacement per rotation = less pressure.
I have to check the numbers but 05/06 has a lot lower oil pressure than 03/04 at 4000rpm. Of course after 7000rpm it's probably neglible. I have no idea what the contribution of the restrictor is but I'd guess that a 05/06 without it will have quite low oil pressure on idle.
Check the attachment for what I mean. I can't double check on the 03/04 gasket as I don't have it anymore but it's definately there with the newer gasket.
Cheers man. Do you know if the kit gaskets are the same (the restrictor I mean)?
Or, if it would be worth drilling out the restrictor, if there is one, on a .45mm kit head gasket (05-06 RR) for my 05-06 RR headed 03 636?
Paging White Hendrix…....White Hendrix to the forum, please.
Last edited by greenmeeny; 01-11-2013 at 07:01 AM.