[stratos23]

Hello,

I'm about to replace the oil cooler hoses and fittings on my 750 F1B. I'm wanting to use Earl's type fittings with stainless braided hose. Earl's fittings are coded in size with numbers - for example "-8" or "-10". Can anyone tell me what the thread sizes/pitch are for the oil hoses on the F1 - both at the oil cooler end and the crankcase end? Are they metric? Has anyone used Earl's type fittings on a std F1 oil cooler? (most Earl's fittings are imperial).

Any leads would be greatly appreciated.

Cheers,

Greg

 

[wdietz186]

Greg, I have an F1 racebike that has -8 hoses on it but it is also running an Earls cooler and the stock cooler fittings might be different.The threads in the engine cases are 14x1.50 and Earls does sell fittings that screw right in. The stock nipples might work but I can't tell you for sure.If there are any race shops or aircraft maint. shops around you they could probably tell you if the std. fittings would do.The later 750 and 900 SS/Monster etc. use -6 hoses and those coolers and fittings will work too.