Snatchy Throttle?

I very recently finished my late-winter project, a 1982 XJ650 Maxim. As far as mechanical mods, it has just a 4-1 exhaust of unknown origin (it was on there when I got it) and some generic pod filters. After a little tweaking and tuning, the bike idles acceptably and pulls cleanly from idle all the way to redline. I say it idles acceptably because I don't have a sync setup, and I've been too lazy to build one from tubing, so they aren't synced exactly and it shows through by way of a kind of lopey idle.

My issue (if it is an issue) is this: I have a long unpaved driveway, so I spend the length of it in 1st gear at really low revs, dodging sinkholes and the like. I've noticed, in this situation, that the bike is REALLY snatchy right off idle. The transition from closed throttle to light throttle isn't smooth at all. Is this normal for these bikes? I modified a spare GSX750F throttle tube to work on the XJ because the XJ one was broken...... and the GSX tube is actually smaller in diameter where it counts, so it SHOULD be slowing down that snatchiness.

Honestly, this bike will be up for sale in the next week or so (have to finance finishing another project bike), so if this is not normal, and requires a lot of work to correct, then I'll probably just leave it this way. It's only in this scenario that it is even noticeable. Thanks in advance for any insight!

 

mine is the same way - it's more noticable when the engine is cold. i think that's just the way it is.

 

These aren't a good low power engine and will buck a bit if not warmed up well first. You will run better with a good carb synch however. The clear-tubing-using-a-yard-stick-on-the-wall idea works well. I use it for both bikes.

 

Nothing wrong with a lil' snatch now and then in my opinion.

Snatch on my friend...

Rob

 

Ah, I agree..... but if my wife finds out that I'm getting snatch while I'm out on the bike, there's going to be hell to pay! 8O

 

LOL!!! Hilarious
Yeah I think these bad boys are just cold natured. Gotta give em a little warm up time. Little lovin and shes good to go

 

You could mitigate the condition greatly by doing a carb sync.