eyeteeth wrote:
I usually look for engine parts in the '78 range. But he dash design, and quad headlights are from '79-80... makes this all that much more difficult.
It does have A/C... not that it works... but the parts are still there.
Changed oil and filter a couple weeks ago. Pressure seems a little low. The gauge is just barely under half.
Yea, the blocked passage definitely would not be nice. I wonder if a 'flush' would clear that.
Oil pressure is okay ... that's where the needle usually is. (Plus, dash gauges aren't all that accurate ... a corroded or loose connection between the sensor and gauge would cause a lower reading.)
Engine flush is a definite recommendation. You might even want to do two or three.
Find a reputable radiator shop and ask if they can do a more thorough flush.
Headlights and dash are a clear indication the chassis is a 1979.
I have a CarQuest commercial account, which gives me access to the same data as the counter people.
In your case, look up parts for 1979 CB300. The main difference between a MB300 and a CB300 is the factory had passenger seat as standard in MB300 and optional in CB300. There may be other minor differences but the two chassis were effectively identical.
Looking up parts for 1978 CB300 is okay as long as you keep the possibility of differences in mind and compare old parts to new parts. Most of the changes between the two years was probably cosmetic, with engine, drivetrain, suspension, etc. probably identical.
The CarQuest listing for '79 CB300/440 didn't include lower radiator hose. (GRRRRR!) So, I went to the '78 CB300/440 listing and crosschecked to verify the likelihood of correct parts.
Upper radiator hose, with A/C, for both is C70461 or 81161
Lower radiator hose, with A/C, for '78 is C70438 or 813321
(First number is OEM style cut-to-fit hose and second is suitable flex hose.)
No radiator cap listed for '79 CB300/440. (Double GRRRRRRRRRR!!!) Only cap listed for '78 CB300/440 was a Mr Gasket aftermarket, with built-in thermometer (?? ... and more expensive), P/N 2476BK. Crosschecked with '78 B300/440, which showed same cap plus OEM style caps by Stant. (Less expensive and, in my mind, preferable.) Stant standard cap is P/N 10231 and with pressure release lever is P/N 10331. Pressure rating for all these caps is 16 PSI.
Also crosschecked radiator cap for '79 B300/360 and same numbers were listed.
