Hi everyone i got timing issues

Davidchopperking

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Liverpool N.S
The internet tells me that the mark on the crank has to be set at 12 o'clock on my c92 benly.but then I set it a TDC the 0 mark is at 6 o clock. Also my timing mark at the cam is on the bottom and not at 12 like the info I found.i am lost and don't know what to do at this point. My bike is a 1961 honda benly c92 125 twin . Any one know how how this should be set correctly it would be greatly appreciated. Thanks in advance.
 
Smaller twins, particularly the early versions pre 64 have some terrible manuals, and really vague timing sections.

IMG_0569.jpeg

Ideally you could post a photo of what you’re seeing, but from sound of it, the static timing just needs to be set properly.

Luckily, that engine has a clip-type master link so you don’t have to hunt up a whole new chain if that one isn’t stretched. (Procedures and specs on that are in the manual)

It also doesn’t require total disassembly. Do you have a copy of the older twins service manual? Cover looks like this:

IMG_0570.jpeg

Before tearing anything apart though, post a photo of what you’re seeing just to make sure that’s indeed the case.
 
I'm fairly confident that the C92 and the CA95 timing is the same. I too, at one point, thought that the timing marks of 12 and 6 o'clock meant vertical 12 & 6. No. The engine, as you know, is slanted.
Below is a pic of my 1962/63 CA95 timing marks as indicated by my straight edge. Also, as an additional note to EzPete's post regarding the master link for the timing chain. The cam chain ends must be at the 8 o'clock position to have room to slide in the master link. Please assure all openings into the engine cavity are blocked to avoid "oops" parts lost into the engine case. I found inserting the master link into the cam chain frustrating. Perhaps it was just me. Good Luck!
 

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Davidchopperking said:
The internet tells me that the mark on the crank has to be set at 12 o'clock on my c92 benly.but then I set it a TDC the 0 mark is at 6 o clock. Also my timing mark at the cam is on the bottom and not at 12 like the info I found.i am lost and don't know what to do at this point. My bike is a 1961 honda benly c92 125 twin . Any one know how how this should be set correctly it would be greatly appreciated. Thanks in advance.
Click to expand...
Roll the crank ahead one full turn and the O mark will be at 12 o'clock.
 
Last edited:
Spokes said:
I'm fairly confident that the C92 and the CA95 timing is the same. I too, at one point, thought that the timing marks of 12 and 6 o'clock meant vertical 12 & 6. No. The engine, as you know, is slanted.
Below is a pic of my 1962/63 CA95 timing marks as indicated by my straight edge. Also, as an additional note to EzPete's post regarding the master link for the timing chain. The cam chain ends must be at the 8 o'clock position to have room to slide in the master link. Please assure all openings into the engine cavity are blocked to avoid "oops" parts lost into the engine case. I found inserting the master link into the cam chain frustrating. Perhaps it was just me. Good Luck!
Click to expand...
So your 0 on the crank is on the bottom as well. Is the 0 on the cam on top?
 
Maybe this will help

The 62 CA95 Basket Case Rescue Log, Start Date June 1st 2024

At the risk of sounding daft about crankshaft bearings I want to enter into my log what I know (or mystified by) and what I find confusing. Consulting parts book for the CA95 and confirmation from member Ballbearian, who's advice I seek and trust, I find the following. My recent pdf parts list...
www.vintagehondatwins.com www.vintagehondatwins.com
 
Davidchopperking said:
If the fly wheel is in a key way and you turn it a full turn it will still be on bottom when the timing marks are lined up wouldn't they.
Click to expand...
After disconnecting the cam chain, you rotate the crank to match the correct timing position shown in the manual. Then you reconnect the chain.
 
EzPete said:
After disconnecting the cam chain, you rotate the crank to match the correct timing position shown in the manual. Then you reconnect the chain.
Click to expand...
Maybe I am doing it wrong. I marked where TDC was on the case then I put the chain together and the mark was on the bottom. When I pot it together and lined the t mark with the mark it lined up the same. Here is my problem shoul I not be over thinking it and just line the 0 marks up where they are saying they should be.
 
EzPete said:
Smaller twins, particularly the early versions pre 64 have some terrible manuals, and really vague timing sections.

View attachment 59713

Ideally you could post a photo of what you’re seeing, but from sound of it, the static timing just needs to be set properly.

Luckily, that engine has a clip-type master link so you don’t have to hunt up a whole new chain if that one isn’t stretched. (Procedures and specs on that are in the manual)

It also doesn’t require total disassembly. Do you have a copy of the older twins service manual? Cover looks like this:

View attachment 59714

Before tearing anything apart though, post a photo of what you’re seeing just to make sure that’s indeed the case.
Click to expand...
It is hard to see from this pic. Is the 0 on the crank on top.
 
Davidchopperking said:
It is hard to see from this pic. Is the 0 on the crank on top.
Click to expand...
Yes.

Again, it would be extremely helpful and far easier to describe if you posted a picture of what you're seeing. per @mike in idaho , who knows these older engines really well, you may just need to turn the crank one more revolution - it spins at a different rate than the cam sprocket does. If you properly aligned the chain when you installed it (both marks on top) and have spun the crank since then, you may just need to rotate it until they line up again.

Here's a slightly better view of where the arrows point to in the manual.

IMG_0569.jpeg
 
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