Tom-UK
Active Member
hi all
i am new here. i ride a YFM350FW Big Bear which i rescued from deaths door a year ago. it ran occasionally with one out of 4 wheels breaking and only the rears driving. ive spent hundreds of £s on it, largely due to living in the middle of the UK and having to get parts shipped from the USofA, where i know most of this sites users are. another reason that it has cost a lot is because of a few rookie mistakes on my part (my fist bike project), one of which i a going to talk about here.
i know that most people are riding Raptors on here but i have seen that you guys like to install the BB oil cooler so i hope you will find it relevant.
this summer i have taken the bear totally to pieces: cut and shut the rusty frame, baremetal respray, full engine rebuild with Wiseco 83mm piston. when i went to strip it i did notice that the oil cooler line bolts were horrendous to take off, it was almost like the threads were crossed. anyway thought little of it and reassembly came and went and next was the first start. started first time! once oil pressure built up it started to leak oil where the pipes join to the cooler so i broke out the 24mm(!) spanner and swung off it to tighten it, shearing off the fitting >: made a mess on the yard floor (whoops)
IMG 1405
the threads of the hose end nuts were all messed up with aluminium off the cooler
i managed to get a used one from a friend in Wales but it was off a different model year and so the hoses were a different length.
having seen some pictures of a member on here's (917warrior or something like that) i noticed he had used some bits of a BB oil cooler system to put on his Raptor, but what mainly caught my eye was the braided steel hose which looks AWESOME against the satin black frame. i wanted to do something similar on mine but i had serious trouble working out what size the threads were. i have found that
FOR the oil radiator you will need M22x1.5mm female fitting
For the filter housing end you will need M14x1.5mm male fittings (12mm tail)
i used straight hose tails with a few Orings and a bunch of white (teflon?) tape to seal them to the new radiator and filter housing.
you will also need 2m (gives you plenty extra) of 12mm ID steel braid over rubber hose.
the M22 hose tail tend to come in 14mm hose tails, you guys in the USA might be able to get 12, but i couldnt so what i did was dip the end of the pipe in some hot water, about 70 C, to make the rubber a bit more maleable and shoved it onto the hose tail which i had greased. its good if the rubber is damp as it make it REALLY slippy when it goes onto the fitting (theres a joke in there somewhere).
i then wrapped the messy ends of the steel braid with some rubber which also spreads the load of the jubilee hose clamps you need to use.
IMG 1400
you could can get proper rubber ends for the steel hose but i had some decent thickness of rubber lying about so...
hope someone finds this helpful and likes the results. personally i think the steel braid hoses look awesome and am going to upgrade my brake, breathers and fuel hoses to steel braid when i get my next pay cheque.
cheers for reading,
tom
i am new here. i ride a YFM350FW Big Bear which i rescued from deaths door a year ago. it ran occasionally with one out of 4 wheels breaking and only the rears driving. ive spent hundreds of £s on it, largely due to living in the middle of the UK and having to get parts shipped from the USofA, where i know most of this sites users are. another reason that it has cost a lot is because of a few rookie mistakes on my part (my fist bike project), one of which i a going to talk about here.
i know that most people are riding Raptors on here but i have seen that you guys like to install the BB oil cooler so i hope you will find it relevant.
this summer i have taken the bear totally to pieces: cut and shut the rusty frame, baremetal respray, full engine rebuild with Wiseco 83mm piston. when i went to strip it i did notice that the oil cooler line bolts were horrendous to take off, it was almost like the threads were crossed. anyway thought little of it and reassembly came and went and next was the first start. started first time! once oil pressure built up it started to leak oil where the pipes join to the cooler so i broke out the 24mm(!) spanner and swung off it to tighten it, shearing off the fitting >: made a mess on the yard floor (whoops)
IMG 1405
the threads of the hose end nuts were all messed up with aluminium off the cooler
i managed to get a used one from a friend in Wales but it was off a different model year and so the hoses were a different length.
having seen some pictures of a member on here's (917warrior or something like that) i noticed he had used some bits of a BB oil cooler system to put on his Raptor, but what mainly caught my eye was the braided steel hose which looks AWESOME against the satin black frame. i wanted to do something similar on mine but i had serious trouble working out what size the threads were. i have found that
FOR the oil radiator you will need M22x1.5mm female fitting
For the filter housing end you will need M14x1.5mm male fittings (12mm tail)
i used straight hose tails with a few Orings and a bunch of white (teflon?) tape to seal them to the new radiator and filter housing.
you will also need 2m (gives you plenty extra) of 12mm ID steel braid over rubber hose.
the M22 hose tail tend to come in 14mm hose tails, you guys in the USA might be able to get 12, but i couldnt so what i did was dip the end of the pipe in some hot water, about 70 C, to make the rubber a bit more maleable and shoved it onto the hose tail which i had greased. its good if the rubber is damp as it make it REALLY slippy when it goes onto the fitting (theres a joke in there somewhere).
i then wrapped the messy ends of the steel braid with some rubber which also spreads the load of the jubilee hose clamps you need to use.
IMG 1400
you could can get proper rubber ends for the steel hose but i had some decent thickness of rubber lying about so...
hope someone finds this helpful and likes the results. personally i think the steel braid hoses look awesome and am going to upgrade my brake, breathers and fuel hoses to steel braid when i get my next pay cheque.
cheers for reading,
tom
