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by Tim Miller
Sat Aug 08, 2020 12:49 pm
Forum: Ignition - Mechanical | Electronic
Topic: Engine seizure/advance repair
Replies: 5
Views: 5344

Re: Engine seizure/advance repair

Thanks Larry, and you’re welcome.

In the last couple months, I’ve rebuilt quite a few advancers. People can’t believe how much better they run once the timing is corrected.

If I can help anyone else email me at:
1964honda250@gmail.com

Tim
by Tim Miller
Sun Jun 07, 2020 4:03 pm
Forum: Motors - 247cc | 305cc | 337cc | 350cc
Topic: Cl77 piston to bore clearance
Replies: 1
Views: 1900

Re: Cl77 piston to bore clearance

Bill, Shop manual shows rebore limit at a loose.0039”. I would expect with that much ring end gap it would certainly start consuming some oil and possibly some piston slap noise. I go with .002 to .0025”. Oh yeah and if your sleeves are loose in the cylinder that’s a problem for heat transfer. Tim
by Tim Miller
Thu May 07, 2020 12:16 pm
Forum: Ignition - Mechanical | Electronic
Topic: Engine seizure/advance repair
Replies: 5
Views: 5344

Re: Engine seizure/advance repair

Thanks Larry! I’ve been modifying these for 15+ years and it’s by far the best performance modification you can do. It also fixes the loose rivets/gear problem. When I first tried this I was concerned about excessive noise when the bob weight stops made contact with cam gear, but there’s no noise. I...
by Tim Miller
Mon Apr 06, 2020 2:40 pm
Forum: Ignition - Mechanical | Electronic
Topic: CB77 ignition advance
Replies: 10
Views: 9408

Re: CB77 ignition advance

Larry,

Yes, I still rebuild a lot of them for folks all over the country. PM me.

FYI just replacing the spring won’t fix the over advancing problem that causes engine to seize on long freeway rides.

Tim
by Tim Miller
Tue Mar 31, 2020 2:52 pm
Forum: Honda Scrambler - CL72 | CL77
Topic: CL77 Clutch cable and perch question
Replies: 10
Views: 5684

Re: CL77 Clutch cable and perch question

DJM is correct that the late model CL’s changed to the CB part. Clearly the parts book shows perch was charged to the CB style at frame 1047978. Good grief!

Tim
by Tim Miller
Fri Mar 27, 2020 4:04 pm
Forum: Honda Scrambler - CL72 | CL77
Topic: Firing on right cylinder only
Replies: 26
Views: 34595

Re: Firing on right cylinder only

According to all of Honda's literature, the compression is lower on the Dream motor, even though the dome height is similar, the profile/shape is obviously different. I agree with Mike in Idaho, and decided it would be best if I did my own test on these two combustion chambers, to determine the prec...
by Tim Miller
Tue Mar 17, 2020 5:50 pm
Forum: Everything Else
Topic: Late model cb77 footrests - spring?
Replies: 4
Views: 3315

Re: Late model cb77 footrests - spring?

No return spring was ever used on CB’s.

Tim




 

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