replacement valves stems for '83 GS650L

[sacruickshank]

My rear tire won't hold air and likely has the original valve stem, or at least a very old one.

Does anyone know what type of stem would be needed for these rims? Would generic pop-in valves work?

Part number is 43130-24A40 and still available from partzilla, but I'm curious if there's a generic readily available for less.

Here's a pic of the current one.

PXL_20221118_134902265.jpg

[Gorminrider]

I've used car-tire type...with the rubber stem. The ones used on car-rims are too big but there are smaller sizes (below) Maybe the smaller diameters are used on trailer tyres?....

You need to make a simple tool from a metal valve cap and a nail to pull them through the rim so it's not as simple as the threaded ones and they should be changed whenever you change tires while the screw types last longer...why are you changing those, by the way. You could just replace the internal valves available from everywhere cheap....

from some notes I kept
"TR413 are stated to be .453"=11.5mm) 1-1/4"long
TR418 are 0.453" and 2" long"
that is, these should fit your hole but the lengths are different
Likely available at auto-parts store (I got some at Canadian Tire)

[sacruickshank]

You could just replace the internal valves available from everywhere cheap....

I have a spare core and will try that first. I'm hoping it's either the core or the stem rather than a bad seal on a 40 year old rim that is not easily replaced.

[sacruickshank]

Argggh ... nevermind. It's (at least) a slow leak from the bead. Need to fix that else a new stem will do no good.

PXL_20221118_221820401.jpg

[Rich82GS750TZ]

I had put a lot of info in this thread linked below. Includes info as to what you may need to do whether you have a rim marked “TUBELESS” or not. The little scotchbrite looking dremel wheels work really well in cleaning up corrosion inside the wheel.

https://www.thegsresources.com/_foru...-1980-suzuki-s

[sacruickshank]

I had put a lot of info in this thread linked below. Includes info as to what you may need to do whether you have a rim marked “TUBELESS” or not. The little scotchbrite looking dremel wheels work really well in cleaning up corrosion inside the wheel.

https://www.thegsresources.com/_foru...-1980-suzuki-s

I haven't read through the entire thread yet, but I di thoroughly clean this rim before the current tire was mounted. I had a previous mechanic butcher a tire when he couldn't get it over the tubeless safety humps. After cleaning the rim as shown in the pick below, another shop had no problem mounting it, but I now have the slow leak shown earlier in the thread. My current though it to break the bead and apply some sealant.

PXL_20220123_150448984.jpg

[Gorminrider]

Yikes. That's a pretty bad seal at the bead! ....how old is the tire? I'd be inclined to get a new tire rather than fuss with concoctions to seal an old one

...by the way, it seems a bit odd to have so many balance weights at the tire stem. Possibly the trie itself is poorly made or the tire's "balance mark" was not placed correctly. If you DO get a new one, or WHEN you get a new one, I usually check the balance of the rim+ valve first ( without the tire) and put the tire's balance mark at the" found" heavy point rather than always at the valve stem...usually, there isn't much difference but sometimes there is and it can save adding weights

[sacruickshank]

Yikes. That's a pretty bad seal at the bead! ....how old is the tire? I'd be inclined to get a new tire rather than fuss with concoctions to seal an old one

...by the way, it seems a bit odd to have so many balance weights at the tire stem. Possibly the trie itself is poorly made or the tire's "balance mark" was not placed correctly. If you DO get a new one, or WHEN you get a new one, I usually check the balance of the rim+ valve first ( without the tire) and put the tire's balance mark at the" found" heavy point rather than always at the valve stem...usually, there isn't much difference but sometimes there is and it can save adding weights

That is a new tire, actually the second new tire on this rim since the first was butchered by a heavy handed mechanic. So, I'm not inclined to buy a third new tire.

[Gorminrider]

ah,so. It's worth another try to rebead it....but- um what brand is it? I had similar troubles but much slower leak with sloppy fit of Avons on my gs650..they'd deflate over 500 miles...tried several times to re-bead em but finally gave up especially as they began to crack ! Bridgestones were a much tighter fit.

..ofcourse you might put a tube in but they need a bigger hole for the valve stem.

[sacruickshank]

ah,so. It's worth another try to rebead it....but- um what brand is it? I had similar troubles but much slower leak with sloppy fit of Avons on my gs650..they'd deflate over 500 miles...tried several times to re-bead em but finally gave up especially as they began to crack ! Bridgestones were a much tighter fit.

..ofcourse you might put a tube in but they need a bigger hole for the valve stem.

It's a Kenda Cruz, K673. I've used them on other wheels with no major issues

[Gorminrider]

hmm. Funny that we both had 650s though mine was an 82 and not an "L"-it had a 17" rear wheel and yours is 16"...but it's not impossible that certain tires match particular "tubeless" rims better especially in the early '80s.

[Grimly]

Oddly, the most recent Avon I fitted to the front (an AM26) is in the habit of slowly losing pressure. This is on a wheel which I had properly cleaned before fitting the tyre and I know the valve stem (and valve) is good.
Eventually I gave up and just threw some Goop in that damned thing - Goop being the equivalent of Ride-On.

[sacruickshank]

Oddly, the most recent Avon I fitted to the front (an AM26) is in the habit of slowly losing pressure. This is on a wheel which I had properly cleaned before fitting the tyre and I know the valve stem (and valve) is good.
Eventually I gave up and just threw some Goop in that damned thing - Goop being the equivalent of Ride-On.

Yep, I'm going to give this stuff a try

[Gorminrider]

Nice they include a metal valve cap I've never used goo in my tires. ...Is it trouble to clean from rims when you replace a worn out tire?

Oddly, the most recent Avon I fitted to the front (an AM26) is in the habit of slowly losing pressure. This is on a wheel which I had properly cleaned before fitting the tyre and I know the valve stem (and valve) is good.
Eventually I gave up and just threw some Goop in that damned thing - Goop being the equivalent of Ride-On.

that makes me wonder. My Roadriders were fine on the front 19" rim but the 17" rear was trouble.need say, Putting them on, I was suspicious when they went on so easily..a loose fit compared to a normal struggle. I've a friend with a BMW(tubeless rims) that mentioned checking pressures too so I don't think I would use them again without tubes. Maybe they are really intended for spoked wheels but have been tweaked to market to tubeless rims.
...it's too bad, because they seemed like a pretty good tyre to ride on and had a useful range of sizes for older bikes.

[sacruickshank]

Nice they include a metal valve cap I've never used goo in my tires. ...Is it trouble to clean from rims when you replace a worn out tire?

.

Don't know. this is my first time with any form of sealant.