Chirping cb160

[Hoosier Tom]

Did you check the oil pump behind the right side cover for any obstruction to the intake screen and for proper function?

HT

[Jlovvorn]

Will check that next Tom.
Put a fine wire into each oil passage under base gasket.
Right side went in a good two to three inches.
Left side went in one inch and stopped.
Is that normal, or should the left go further?

[Hoosier Tom]

I see you have been posting this problem on the Honda twins site and Steve has offered help over the phone. I would take him up on it.

HT

[Jlovvorn]

Yes, we spoke by phone a bit ago.
My first two stops are confirming the pump and those two passages under the base gasket.

[bikedoctor99]

Russ,
Sorry to read that the top end is toasted, but as you know it can be rebuilt after a meticulous and methodical cleaning.
However you should determine why your motor lost its oil distribution.
Keep us posted.
Allan

[Jlovvorn]

Update: I found a layer of steel wool shavings stuck to the bottom of the oil pump, coating the screen. It peeled off like dust on a dryer vent.

Before I knew better, I used steel wool to clean the engine cases when they were apart.

I learned this was a really bad idea half way through, and thought I blew it all out and rinsed it out, but apparently not.

I have finished flushing everything and the engine is back together with NOS cam and tappets.

Hoping to get it started this weekend.

[Jlovvorn]

Bike is all finished.

Had horrible time with carbs, as has been the case since I got the bike.

Bolted on PE22 carbs this weekend, and zoom! Idles and runs great.

Wondering if PE22 would be a possible option on my 305, which also has very cranky carbs.

Here it is running https://flic.kr/p/nrLnZm