Topic: 1974 CB750 Oil filter housing help!

[Czapski]

Hey guys, I couldn''t get the dreaded Oil filter housing off and absolutely destroyed it (good times) I had ordered Hiflo Oil filter (hf401) which I am just now confirming wouldn't have even worked as the current one is a completely sealed filter that threads on.

I am in Canada so that may be the first problem.

My question is where am I getting the filters that come in the complete casing and screw on to the bike. Photos are attached to show what I did but it looks like I need a filter which is also encased and thread on to the bike.

The bike currently has no oil in it for obvious reasons. Is this a huge deal if all holes are plugged and it sits while I source the correct filter.

Any help is greatly appreciated.

Thank you.

[MauiK3]

Yamiya.com

[Bodi]

I can't help with that filter, I have seen them but don't know what filter would fit your adapter.
Any SOHC4 filter housing and bolt will fit, if you want to go back to stock and use the filter you bought. Just don't over tighten it, and put some antiseize or grease under the bolt head flange as this is where they seize up.

[bryanj]

Correct any sohc4 oil filter housing with bolt, spring and washer will fit the hf401.
The"spin on" adaptor was a US custom mod years ago but the filters are no cheaper and dont last any longer so WHY

[Czapski]

Ya I did some digging and a past oil change the Hi-Flo hf171rc was put on. I do like the look of the black and looks a little more sleek. I wasn't aware it was some type of an aftermarket. I bought this bike with some modifications. This being one of them.

[ekpent]

 See they make that filter in chrome also. This one was 12 bucks on Amazon. Not sure in Canada. Maybe there is a cross reference to a different maker that you can get in your neck of the woods.

[Czapski]

See they make that filter in chrome also. This one was 12 bucks on Amazon. Not sure in Canada. Maybe there is a cross reference to a different maker that you can get in your neck of the woods.

Ya my biggest concern is that although that was on it and that's the part number that the next one won't thread on lol. I'll have to take my chances and chalk it up and a lesson.

[Don R]

 It's 12 bucks, take a crazy chance.

[dave500]

dont over tighten it putting it on,just touch the o ring home then 3/4 of a turn more,use a strap wrench to remove it,those silly tapered nut shapes often just fold.

[pjlogue]

If you put on another "spin on" oil filter be sure to oil the rubber gasket surface on the new filter otherwise they are very hard to remove come the next oil/filter change.

-P.

[HondaMan]

...and...order Honda's own O-ring for the filter housing, if you go to the Honda style filter cover. The ones that come in the filter kits are not thick enough. One O-ring lasts 15 years or more, costs about $5.

[70CB750]

I searched for a spin on flter for a long time.  Closest i got was one from NAPA - the size matched and the thread was the corect one - M20x1.5 - but the plate with holes was not concaved enough to clear the nipple on the engine.

Yes i know there are chome filters from some vendors but i wanted oil filter i could buy or order locally for $5 or so. 

[Czapski]

Alright so process complete and no leaks. I figure I'd post this if anyone does have the stock cover setup on theirs.

The filter in the photo comes with the o-ring needed and screws on for proper fit.

Photo shows the part number. It is available in chrome as well.

One last question. I put 3 quarts in, let it warms up and it was not touching the dipstick. I added 0.3 quarts and let it run for a few minutes. It still doesn't touch the dip stick but I can see the oil in the tank. Is this enough or do I still need more? I am getting conflicting answers on how much to put in.

[ekpent]

 I think it calls for 3.7 quarts. Don't check the level until the engine has run for awhile so as to get the oil up out of the engine and into the tank at the proper level. In my earlier days I would just toss in all 4 qts and call it good but try to be a little more careful nowadays.
  If your filter holds more oil your results may vary slightly.

[Czapski]

Ya I just did a top up before end of season because I didn't know about it lowering back into the case when cold. Went for a decent ride and oil was all over the back end from the overflow. I do not want that to happen again lol. I'll add a bit more.

This filter seems like it would be equivalent to the stock size casing. At least now I know how much oil is actually in there.

Thanks everyone!