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Author Topic: YZ 125 H Radiator Hose Bypass  (Read 5020 times)

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Offline rodc

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YZ 125 H Radiator Hose Bypass
« on: October 18, 2012, 07:02:40 pm »
I was wondering if any of you guys have any tips about how to bypass the stem routed water piping on an H or J series 125 or 250.

Any help is appreciated.

Rod
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maico police

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Re: YZ 125 H Radiator Hose Bypass
« Reply #1 on: October 18, 2012, 07:32:03 pm »
I've got a 125 h but I run the coolant through the head. I can't see any other way that wouldn't be bulky, reduce your steering range or be more problematic than the existing system. I'm sure with some fudging of some after market seals (original are  exxy and rare) you can achieve a leak free system.  :)
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Montynut

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Re: YZ 125 H Radiator Hose Bypass
« Reply #2 on: October 18, 2012, 07:40:18 pm »
Go on Ross I know you bought the last 20 sets from Oz/US Yammie a couple of years ago don't keep em all to yourself ;)
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Offline rodc

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Re: YZ 125 H Radiator Hose Bypass
« Reply #3 on: October 18, 2012, 07:48:29 pm »
Quote from: Mont on October 18, 2012, 07:32:03 pm
I've got a 125 h but I run the coolant through the head. I can't see any other way that wouldn't be bulky, reduce your steering range or be more problematic than the existing system. I'm sure with some fudging of some after market seals (original are  exxy and rare) you can achieve a leak free system.  :)

I haven't been able to source seals and the ones on my steerer had perished so I don't really know what I am after. It seems quite common to bypass hence the question.

What do the seals actually look like?

Rod
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Re: YZ 125 H Radiator Hose Bypass
« Reply #4 on: October 18, 2012, 08:44:27 pm »
Quote from: Montynut on October 18, 2012, 07:40:18 pm
Go on Ross I know you bought the last 20 sets from Oz/US Yammie a couple of years ago don't keep em all to yourself ;)

I'm never telling you anything again.....

Sorry Rod. If you can hold off a week I can get some out, measure them and put some pics up for you. I just won't have access to them until then and no I don't have any for sale.

I can tell you that the lower one (the crucial one) looks very normal.
I'll put some pics up in a week.... :-\

Until then, have a look at the link below of my 125 h.
« Last Edit: October 18, 2012, 09:02:35 pm by Mont »
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Tony T

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Re: YZ 125 H Radiator Hose Bypass
« Reply #5 on: October 18, 2012, 09:21:53 pm »
Quote from: Mont on October 18, 2012, 08:44:27 pm
no I don't have any for sale.

Jeez, you're a tough bastard!  >:(

So tough you could nearly getting away with wearing pink riding gear................ nearly..............  ;D ;D ;D ;D ;D
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Montynut

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Re: YZ 125 H Radiator Hose Bypass
« Reply #6 on: October 18, 2012, 09:45:19 pm »
I've heard that Ross actually uses H & J yammie coolant head stock seals as body armour in that pink riding gear he has that many laying around ;D :D

 ;D ;D ;D

Sorry Rodc ummmm just taking the piss. Ross's 125 is a pearler though.

Oh yes Ross take care of all that Monty stuff your bring to NSW for me  ;) 8)
« Last Edit: October 18, 2012, 09:53:07 pm by Montynut »
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Re: YZ 125 H Radiator Hose Bypass
« Reply #7 on: October 19, 2012, 06:23:45 am »
A bunch of funny burgers.  :D. Truth be known I only have two sets left. There have been some on eBay lately however....
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Montynut

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Re: YZ 125 H Radiator Hose Bypass
« Reply #8 on: October 19, 2012, 06:33:22 am »
Well don't keep rodc in suspense post him the bloody links. Drive carefully now Ross
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Offline YZ250H

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Re: YZ 125 H Radiator Hose Bypass
« Reply #9 on: October 19, 2012, 07:04:32 am »
Some info here.

http://ozvmx.com/community/index.php?topic=19610.0
The bottom one is the hard part.  I couldn't find one after a lot of searching and asking all the bearing shops I could find.

I have worked out an alternate system using generic size seals, but I don't know if it seals properly yet  :-\
I had a new steering head turned up from 316 stainless.  That was not cheap  :o :o
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Looking for YZ250C parts NOS if possible

"My inability to use emoticins in the right context is really getting me down :)
Quote from: GMC on May 03, 2014, 10:35:22 am
The only triple jumps he would have been doing are the hop, skip & jump.

maico police

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Re: YZ 125 H Radiator Hose Bypass
« Reply #10 on: October 19, 2012, 07:40:52 pm »
Ooops. I got it the wrong way around. The top one is the easy one. :-[

For some reason the bottom ones I have look different to Tonys..... ???
« Last Edit: October 19, 2012, 09:30:26 pm by Mont »
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Offline YZ250H

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Re: YZ 125 H Radiator Hose Bypass
« Reply #11 on: October 19, 2012, 08:19:52 pm »
The photos are of the set you sold me Ross  :-\ :-\

It's all good mate ;D.  I have my headstem back together and I have a pressure tester from work so I'm going to give it a go.  What sort of pressure should I be testing to - does anyone know ??
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Looking for YZ250C parts NOS if possible

"My inability to use emoticins in the right context is really getting me down :)
Quote from: GMC on May 03, 2014, 10:35:22 am
The only triple jumps he would have been doing are the hop, skip & jump.

Offline TT5 Matt

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Re: YZ 125 H Radiator Hose Bypass
« Reply #12 on: October 19, 2012, 08:27:43 pm »
20 psi or less as they have only a 16psi working pressure
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Offline YZ250H

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Re: YZ 125 H Radiator Hose Bypass
« Reply #13 on: October 19, 2012, 08:55:47 pm »
Awesome thanks Matt.  i will give it a go during next week.
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Looking for YZ250C parts NOS if possible

"My inability to use emoticins in the right context is really getting me down :)
Quote from: GMC on May 03, 2014, 10:35:22 am
The only triple jumps he would have been doing are the hop, skip & jump.
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