Off to Maxton

30 min till I leave Red Wing for Sun Prairie, then leaving right away for Maxton, NC.

My Dad has been having a few problems with the Triumph (Hummer isnt going to make the trip)
Here is a message I got from him earlier today.

Kind of at end here with the Triumph.  Spent the last 3 days trying to uncover the reason why I am not getting the Rt cylinder to run on the motor.

Have re-checked the following:  Ignition timing, point gap, rebuilt the Rt side carb, changed mag rotor and cap,  exchanged plug wires.

Left cylinder runs great, right fires sporadically, and backfires with a nice blue flame out the exhaust every now and then.  When I pull the Rt plug it is often wet.  Great spark from that side however, (put in two sets of new plugs during the process). Compression test shows almost identical compression on both sides, (low, but given the radical cam timing I am guessing it is ok, and the left side runs strong with  the same compression reading as the left).

First time I have run the motor since I re-timed the cams,  but I can not see how if I have it timed incorrectly, that the right side could be off if the left side is running good?

It might be possible that I have one of the cams in 180 deg off, but since both sides are on the same camshaft I can not visualize how one side could be running good and the other not, still trying to get that whole thing pictured in my head.

Any thoughts?   We may be running a 375cc motor at Maxton if I can not get this figured out.

Mz

 

 

Its hard not being home to help with the prep process.

Then just an hour ago I got this.

I think it is the valve timing. Will need to pull the mag and timing cover off an re-degree the cams.

Should be able to get a start on it after work today.  Rest we can do in the van on the way there and at Maxton.

 

Almost feels like we are going to Bonneville,  bike half finished the day of departure!

 

 

Mz

 

 

For future reference Triumph owners, found the below info on the  Jockey  Journal forum.   Will help me decide which, or if both cams need to be degreed.

 

Sounds like your valve timing is out...you can track it by following the pistons up and down and ensuring the valves are opening and closing when they should...you don't need a degree wheel to do a rough-guess-test, the exhaust should begin to open at roughly 3/4 of the power stroke, the exhaust and intake should be rocking closed and opening respectively just when the piston is at top center between the exhaust and intake stroke and the intake should close fully at about 1/4 the way into the compression stroke. The exhaust and intake rocking at top center is a test I have always done upon final reassembly to make sure the timing is correct...it may be a little primitive, but it has never let me down. I hope this helps...if everything seems OK there may be a problem with the valves not seating properly.

 

+1 on the above. Conversely, both valves should be closed and not moving the when the piston is at TDC on compression.

Looks like this is going to be a fun vacation.