Reply to thread

Message

[QUOTE="Rich Rohrich, post: 322364, member: 16241"]
SFO ran his ~14:1 444cc WRF for 1500 mostly WOT through Baja without overheating it, and there are tons more folks running the same CR on WRs and YZFs without issue including me. Running the bore out to 98mm as you did leaves precious little sealing area for the minimal clamping area designed in by Yamaha. If we assume you don't have air in the cooling system (very common cause of this) a mechanical/flow problem with the cooling system or a detonation problem (unlikely and easy enough to spot) the head gasket is a pretty good bet. If Yamaha had used studs to locate the barrel instead of long bolts and simple dowels it would be much easier to get higher more positive clamping at the cylinder/head junction. Thank a pinhead accountant for that decision because no self-respecting engineer would design it without studs if given the option.

Take a look at the CRF and you'll see it done correctly.

Score at Honda :

CRF Engineers [b]1[/b]
Lunkhead bean counters [b]0[/b]  :D
[/QUOTE]

Verification

Which ocean is California closest to?