slade
XS650 Enthusiast
It appears as if Mike's no longer has the high volume oil pump. Does anyone know where one could purchase one? I am installing an oil cooler.
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JohnGoodenough
XS650 Addict
Heiden have them.
I'm wanting to put a cooler on myself
I'm wanting to put a cooler on myself
slade
XS650 Enthusiast
Thank you John. I will check the Heiden site out.
Heiden tuning May stock them, that's where I got my one about 12 months ago when I couldn't get one at mikes. I originally purchased one from mikes 7or & years ago and the quality was much better back then. The Heiden on has a pair of rotors sandwiched in together to make up the extra thickness, and one of the rotors was so sloppy that i replaced it with a half worn out Yamaha one which had a much tighter internal clearance.
JohnGoodenough
XS650 Addict
So the heiden one is not up to the job, 270?
CDNTX650
XS650 Guru
Tje mikes one is shit. I bought one and it wouldnt spin freely at all. Re clearanced my stock one instead
slade
XS650 Enthusiast
at 119 euroes the price is nuts for a marginal quality pump.
I think I will just blue-print a new pump.
I think I will just blue-print a new pump.
Good idea, one with a 12mm wide rotor instead of an 8mm and a 4mm together.
Pretty sure Honda CB750 has a 12mm rotor that looks very similar, may be worth a look.
Johngoodenoug I installed my one the other day but did not use the sloppy rotor provided.
See how it goes!
slade
XS650 Enthusiast
650performance
XS650 Addict
Maybe you have a special set of circumstances, but I can tell you that I am not aware of even one XS650 being raced in AHRMA road or flat track racing that uses a high volume oil pump. The factory race bikes in the '70s didn't use one, nor did the ultra-trick OU versions of these engines.
If a 65 - 70 RWHP XS engine can be held wide open at 8000 - 8300 RPM for as much as a minute around Daytona's road course using a stock oil pump with no evidence - ever - of an lubrication-related failure, I can't imagine any other use that would create an even more hostile set of conditions. Ditto at Willow Springs on 105+ degree days between turns 6 and 1.
So, as I say, unless you are doing something truly onerous to the engine, save your money.
If a 65 - 70 RWHP XS engine can be held wide open at 8000 - 8300 RPM for as much as a minute around Daytona's road course using a stock oil pump with no evidence - ever - of an lubrication-related failure, I can't imagine any other use that would create an even more hostile set of conditions. Ditto at Willow Springs on 105+ degree days between turns 6 and 1.
So, as I say, unless you are doing something truly onerous to the engine, save your money.
slade
XS650 Enthusiast
Thank you very much. That post has heaps of excellent information
650performance
XS650 Addict
And, yes, the stock oil pump is adequate for oil coolers too. Back in the "Battle of the Twins" days there were lots of XS engines on the grid with oil coolers and, again, nobody had upgraded oil pumps and I'm not aware of any engine failures that could be traced to lubrication failure.
slade
XS650 Enthusiast
Thank you for the good information. I once has a high performance VW engine with a very large after market pump .As it turns out the pump just ate up Hp and blew seals. Back with the stock pump, I gained 5Hp and had no more seal problems.
pcoumbe
BicolXS650
I fitted a 50%+ oil pump I bought from The Tired Kraut back in 2010 after a crankshaft bearing and RHS top end failure. I hadn't owned the bike long and didn't really know it's history or even much about the XS650 in general at the time. Seeing as I was going the paper filter/cooler route at the same time I decided a bigger pump couldn't hurt and had to replace the original as it had a cracked rotor ring.
End result was the pump supplied was a beauty, spun freely with minimal clearance and shoves oil everywhere. End result is a quiet engine but I had to sort a few leaks at first.
End result was the pump supplied was a beauty, spun freely with minimal clearance and shoves oil everywhere. End result is a quiet engine but I had to sort a few leaks at first.
slade
XS650 Enthusiast
I will try to find a site for "tired Kraut"
pcoumbe
BicolXS650
http://www.ebay.ph/itm/MOTOR-OLPUMP...pt=Motorrad_Kraftradteile&hash=item58a8abdf85
Not advertising any of the larger pumps just now. May be worth sending him a message though if you really want one. I've bought quite a lot of stuff from him over the years as his shipping to me in Asia is fast. He's not the cheapest seller but has certainly been helpful and honest with me and his products have been good.
Not advertising any of the larger pumps just now. May be worth sending him a message though if you really want one. I've bought quite a lot of stuff from him over the years as his shipping to me in Asia is fast. He's not the cheapest seller but has certainly been helpful and honest with me and his products have been good.
FLEA
XS650 Guru
hes on german ebay and he does it both in english and german
slade
XS650 Enthusiast
Cool I sent 8+ years in Germany and speak German. I will check out his German ebay site.
JohnGoodenough
XS650 Addict
Please let me us know...
