ElCamMan515
XS650 Addict
Well some bad news. Got home and found out the boots are the wrong ones. I was sent a set for BS34 carbs not BS38. Will contact the company tomorrow. The saga continues haha.
Tim
Tim
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1978 Xs650SE Barn Find
- Thread starter ElCamMan515
- Start date
ElCamMan515
XS650 Addict
77 BS38 carb holders can be found.
pm if needed.
ElCamMan515
XS650 Addict
ElCamMan515
XS650 Addict
I made contact with PartsGiant. I have shipped the boots back for an exchange for the correct boots.
Tim
Tim
ElCamMan515
XS650 Addict
ElCamMan515
XS650 Addict
ElCamMan515
XS650 Addict
Good evening everyone,
Small, but big update. After waiting over a week for the new correct carb boots to come in, I was eager to get out to garage. I got everything back installed and got the bike running after charging the battery.
The bike seems to run way better than before and the rpms does not hang like it used to. I have attached pictures below of the right and left cylinder timing. Left is first picture. Right is second picture .
At 3k rpms the advance is near the mark. (Sorry no pictures). Also below is a short video of how it idles with some throttle blips (you can see rpms in video). What are your thoughts everyone?
Also, I checked the voltage across the battery terminals and it was 22.6v. What can cause the high reading??
Thanks,
Tim
Small, but big update. After waiting over a week for the new correct carb boots to come in, I was eager to get out to garage. I got everything back installed and got the bike running after charging the battery.
The bike seems to run way better than before and the rpms does not hang like it used to. I have attached pictures below of the right and left cylinder timing. Left is first picture. Right is second picture .
At 3k rpms the advance is near the mark. (Sorry no pictures). Also below is a short video of how it idles with some throttle blips (you can see rpms in video). What are your thoughts everyone?
Also, I checked the voltage across the battery terminals and it was 22.6v. What can cause the high reading??
Thanks,
Tim
Attachments
ElCamMan515
XS650 Addict
The voltage must be around 14 V running
Engine running
Sounds more or less right .I get the impression it is a fraction very very very very little
late although the strobe pictures don't show that
I don't remember at what rpm the check should be done please check that
I would leave it there for now and get some miles ..checking how plugs look.
Later on a video on the cylinder heads with sound and blipping gives better info
Now it is the Exhaust note dominating but again it sounds OK adjusted.
Was it 5T that Nailed it the Intake Leak ?
Engine running
Sounds more or less right .I get the impression it is a fraction very very very very little
late although the strobe pictures don't show that
I don't remember at what rpm the check should be done please check that
I would leave it there for now and get some miles ..checking how plugs look.
Later on a video on the cylinder heads with sound and blipping gives better info
Now it is the Exhaust note dominating but again it sounds OK adjusted.
Was it 5T that Nailed it the Intake Leak ?
ElCamMan515
XS650 Addict
Jan- it was you and 5twins that suggested an air leak. I believe I had an air leak with the old boots and the advance rod sticking. Now that I lubricated the advance rod it does not hang when rev'd up as noted in previous posts and videos.
I really appreciate everyone's help! I plan to take bike out for a good ride this weekend with a buddy.
Tim
I really appreciate everyone's help! I plan to take bike out for a good ride this weekend with a buddy.
Tim
Yes Sir
Please drive carefully ...It happens when riding ..with a fresh serviced bike + friends that shall I say " Throttle Blipping "
Happens out on the road also But since there might still be things unknown with the bike
Some sort of Running in Driving can be a good starting point.
Some leak would not be Impossible happen Have you Checked the Head Bolts ?
ElCamMan515
XS650 Addict
I have not checked headbolts yet, I have to borrow a torque wrench from my father in law. I'll check them this week.
Do you know torque specs off hand?
Tim
Do you know torque specs off hand?
Tim
The nuts are 27.5 ft lbs. 15 ft lbs for the other four bolts.
Your timing looks pretty good. It's not perfectly matched cylinder to cylinder but that's no easy task, lol. You said the advance is around the mark. You want it at or before it but never past. If it's going past, you'll want to retard the idle timing a little more. You have a little more you can go because neither cylinder is at the right hash mark of the idle timing range yet.
Here's a drawing for torquing the cylinder head. I've revised my thinking on the big acorn nuts (#1 - 8). I wouldn't go over 30 on them. Going tighter doesn't really seem to help and just puts more of a strain on the studs .....
ElCamMan515
XS650 Addict
Jet and 5twins - thank you for the torque specs. When Leo was here he noticed some seeping from the head and told me that I should re-torque the head.
5t- to clarify when rev'd to 3k rpm the timing mark is a sliver to the right of advance mark. This is a huge improvement from before when it was so far left you could barley see the mark bc it would go extremely advanced.
5t- to clarify when rev'd to 3k rpm the timing mark is a sliver to the right of advance mark. This is a huge improvement from before when it was so far left you could barley see the mark bc it would go extremely advanced.
