Author Topic: no gasket!!!!  (Read 4108 times)

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Offline edbikerii

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Re: no gasket!!!!
« Reply #25 on: January 07, 2008, 09:20:16 PM »
So, Kevin400F and Paulages, what oil do you run?  Do you have any issues with low oil pressure light coming on at idle or otherwise?  Have you run for long with these o-rings in place?

What was your source for the o-ring, Kevin400F?  How did you determine the measurements?

Thank you!
SOHC4 #289
1977 CB550K - SOLD
1997 YAMAHA XJ600S - SOLD
1986 GL1200I - SOLD
2004 BMW R1150R

Jetting: http://forums.sohc4.net/index.php?topic=20869.msg258435#msg258435
Needles:  http://forums.sohc4.net/index.php?topic=20869.msg253711#msg253711

Offline paulages

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Re: no gasket!!!!
« Reply #26 on: January 07, 2008, 09:42:05 PM »
So, Kevin400F and Paulages, what oil do you run?  Do you have any issues with low oil pressure light coming on at idle or otherwise?  Have you run for long with these o-rings in place?

What was your source for the o-ring, Kevin400F?  How did you determine the measurements?

Thank you!

i usually run 10W-40 year round (though i ride much less in the winter obviously). my oil pressure light always goes off immediately after starting, and doesn't ever come on at idle. i use motorcycle formula when i can, but often have to top it with whatever if i'm on a ride and notice it's low.
paul
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1974 CB550 (735cc)
1976 CB550 (590cc) road racer
1973 CB750K3
1972 NORTON Commando Combat
1996 KLX650 R

Offline Kevin400F

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Re: no gasket!!!!
« Reply #27 on: January 07, 2008, 09:56:14 PM »
I use various brands of 15W-40 "diesel-spec" oil, i.e. Delo 400.   No issues with low oil pressure.  The cap registers to the oil pump body with a metal-to-metal fit, and the O-ring is compressed in a defined gap.  As long as it is not leaking or so grossly oversize that it distorts the cap and/or prevents the metal-to-metal contact from occurring, there can be no effect on oil pressure.

One of my pumps was leaking, so I simply disassembled it and measured the old, compressed O-ring, as well as the cap.   

I've run the Buna-N oil rings from American Seal (Dichtomatik) for several years.  Viton material would be a potential upgrade, but I'm convinced from inspecting the Honda original that it must have been Buna.

Offline edbikerii

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Re: no gasket!!!!
« Reply #28 on: January 08, 2008, 05:50:33 AM »
Alright, thanks guys!
SOHC4 #289
1977 CB550K - SOLD
1997 YAMAHA XJ600S - SOLD
1986 GL1200I - SOLD
2004 BMW R1150R

Jetting: http://forums.sohc4.net/index.php?topic=20869.msg258435#msg258435
Needles:  http://forums.sohc4.net/index.php?topic=20869.msg253711#msg253711