Talk Morgan Forums Morgan Sports Cars Classic Morgans (pre-CX) What Did You Do To Your Morgan Today?

Really when it comes to the rear shocks, imho is that they fit your car correctly. (All Morgans are different sir) they need to be “circa” 8.5 in at full compression & 12 in at full extension. You can get a good idea of what your car needs using a tape measure & some trigonometry. (Posted on TM some time ago)
Morgans have so little movement available, in that the car either rides along on the shocks internal stops or hangs on the shock at full extension. Getting ones that fit to prevent that is imho a must.

New tyre only 300 miles ? I assume recently fitted then ?

If so the tyre monkey has caught the inner seal with the lever or the nasty air tool bead breaker, I've had the same & they don't admit catching it - you just find a slow puncture a few days later

You may struggle to get a good seal from a patch-up as silicone does not stick well to existing, I had to grind out all the split area

Spot on I think Cooperman, my thoughts exactly and happens when removing a tyre. You can bodge it but send it to NWS and they will do it properly

Having er hum, adjusted the spokes slightly on the two rear wheels of my Roadster and suffered the consequences of damaged seals/deflated tyres, I can categorically say that your damage is not consistent with the localised damage mine suffered - see below after prep for replacement sealant. As Jon suggests its certainly been caused by clumsy tyre replacement. Although I was able to repair the damage on both of mine, that long stretch would need to be completely dug out and even then may need complete renewal as I note the edges have been damaged as well. Worth calling MWS for advice noting they can supply the correct Dowsil sealant. There are videos on complete seal replacement but its a big task removing old sealant first. Again MWS can perform this service.

A few years ago, my local village garage changed all 5 on my Roadster. They were careful but still damaged three seals. The tyres removed from the inside, not the outside, as I recall. Anyway they had some black silicon, and cleaned up the cracks, which were localised. Left overnight, and they have been fine ever since. I left the Roadster in the garage and just took the wheels down, so it wasn't a problem.

I've also used Tyres on the Drive twice on the VWs and service was excellent.

Couldn’t you just use an inner tube. Ran an MGA for years which had tubes - no problem.

Sir P

An inner tube was suggested by a wire wheel specialist in Cardiff. A solution BUT it means not using the matched stainless valve.
I am going to fit a rim band over the original sealant. As a quick test I might try Duct tape. A mate who was a pro motorbike racer for a top end team did that and no problems.
The existing silicone sealant is quite thick and it does look like the damage was done during fitting a new tyre. I can't see how not.
I want the car back on the road asap for some runs so a full clean, re-seal and rim band as a proper later job.
I'll get the rim band, silicone and make a smoothing profile ready. The cleaning will be the key to a good job.
To cap it all I also have a slow puncture in the other car that started yesterday.

Sospan it's not that easy, As John said a large-ish patch is needed to be repaired for it to be successful using silicone and the close proximity of the spokes sort of prohibits this, couple that with it being a specialised product and it'll end up costing more in time and dosh before you eventually get it sorted properly. If you have a spare just courier it to MWS rapped in good cardboard, It'll be returned all beautiful in an MWS box. Many Mog's don't have a spare these days, It's coming up to the bad weather so I'd just rely on the recovery option if the worst happened!

I had a leak in a tubeless wire wheel on my 2005 Roadster. I researched the recommended repair process and it sounded way too complex. My recollection is it involved removing the old sealant and replacing with a specialist sourced sealant, with a particular application required to insure a leak free wheel. I got ahold of MWS, the supplier of the wheels and they said "put a tube in it." I put a tube in it and haven't had any trouble since. If I would have known that some regular silicone sealant was the answer, I would have avoided the tube, sealed it up and been on my way!

John

My car has a spare so this wheel will be used as a spare in the short term so I can use the Morgan. No long trips planned so local only apart from visiting MMC on Oct 3rd if I rearrange things to free that up. Then get it fully sorted.
As an aside, just got back from getting the other car slow puncture sorted. Puncture repair failed twice. Dril/plug method. New tyre ordered for Sunday fitting. It's a VERY slow leak but only one short shopping trip of a 2 mile drive so looks ok for that. Pump ready. Odd thing is the plug insert patch covers a decent area inside that should have sealed it. Two attempts made, patch well rollered to get good contact, good adhesive spread. Ah well. Got a decent discount on the tyre. Shame as plenty of tread left on the original.