The Triumph Dolomite Club - Discussion Forum

The Number One Club for owners of Triumph's range of small saloons from the 1960s and 1970s.
It is currently Sat Oct 20, 2018 12:19 pm

All times are UTC




Post new topic  Reply to topic  [ 19 posts ]  Go to page 1 2 Next
Author Message
 Post subject: Gearbox tunnel sealing
PostPosted: Mon Sep 24, 2018 8:04 pm 
Offline
TDC Oxfordshire Area Organiser

Joined: Sun Oct 08, 2006 3:32 pm
Posts: 157
Hi all. I am sure this has been covered many times before, but does anyone have any recommendations for sealing a gearbox tunnel?

I've removed mine to deal with some grot (caused likely by the seal failing in the first place), so after I have cleaned it all up and dealt with the rust I will want to seal it properly.

Any ideas much appreciated.

Kind Regards

MC


Top
   
PostPosted: Mon Sep 24, 2018 9:24 pm 
Offline
TDC Member

Joined: Fri Apr 13, 2018 10:38 pm
Posts: 32
Location: Berkshire
I bought this for my Toledo, but it's going to be some months before I try it:

https://shop.tssc.org.uk/product/gearbo ... l-seal-kit

I didn't measure to see if 3m was long enough!

I don't think the fixing are any good, but hopefully the seal itself will be.


Top
   
PostPosted: Mon Sep 24, 2018 9:52 pm 
Offline
TDC Member

Joined: Mon Dec 03, 2012 6:04 pm
Posts: 851
Quote:
Hi all. I am sure this has been covered many times before, but does anyone have any recommendations for sealing a gearbox tunnel?

I've removed mine to deal with some grot (caused likely by the seal failing in the first place), so after I have cleaned it all up and dealt with the rust I will want to seal it properly.

Any ideas much appreciated.

Kind Regards

MC
What you need is dumdum sealant, but they stopped making it. Basically a flexible sealant that doesn't set.

I am going to try a couple of strips of universal weather seals on mine, to see if they will work.


Top
   
PostPosted: Mon Sep 24, 2018 10:14 pm 
Offline
TDC Motorsport Registrar
User avatar

Joined: Sun Apr 06, 2014 9:49 pm
Posts: 776
Location: Northwich
As my Sprint is ostensibly a racer it is stripped bare inside. I have used a type of draught seal tape that is adhesive on one side.

I have been to quite a few very wet events this year, namely Croft at Easter during the Beast from the East and later at 3 Sisters where I was literally going through water splashes.....as there's no carpet I can see if any water comes in....result, no leaks!

Something like this....

https://rover.ebay.com/rover/0/0/0?mpre ... 2385847929

_________________
Still searching for Sprint UUW 410M....If you know it or see it, I want it back! Now known to be in the Llandudno area....
Please get in touch!


Top
   
PostPosted: Tue Sep 25, 2018 7:55 am 
Offline
TDC Member

Joined: Fri Jan 08, 2016 9:00 pm
Posts: 860
Old fashioned windscreen sealant, still available from motor factors, in plastic tubes. It's pretty much non-setting.


Top
   
PostPosted: Tue Sep 25, 2018 8:14 am 
Offline
TDC Staffs Area Organiser
User avatar

Joined: Wed Oct 18, 2006 1:08 pm
Posts: 5559
Location: The Old Asylum
Silicone sealant or butyl strip. The strip though is quite messy to remove if you need to whereas silicone sealant often peals away quite nicely.

_________________
Mark

1961 Chevrolet Corvair Greenbrier Sportswagon
1980 Dolomite Sprint project using brand new shell
2009 Mazda MX5 2.0 Sport
2015 BMW 118d Sport


Top
   
PostPosted: Tue Sep 25, 2018 9:19 am 
Offline
TDC Sprint Registrar
User avatar

Joined: Wed Jul 22, 2015 11:58 am
Posts: 1292
Location: London
I used a neoprene sponge which is waterproof when compressed, roughly 15mm thick from Ebay.

The self adhesive was not doing a good job, so a bit of glue and some bulldog clips helped stick it down overnight.

The picture was taken after removing the tunnel to change a O/D switch, and put back with no extra works to the strip.


Attachments:
20161018_154024.jpg
20161018_154024.jpg [ 236.38 KiB | Viewed 240 times ]

_________________
NRW 581W Sprint


On the motorway no one can hear me sing!
Construed as a public service, self preservation in reality.
Top
   
PostPosted: Tue Sep 25, 2018 9:30 am 
Offline
TDC Staffs Area Organiser
User avatar

Joined: Wed Oct 18, 2006 1:08 pm
Posts: 5559
Location: The Old Asylum
The neoprene foam idea is spot on. I think I might go with that.

_________________
Mark

1961 Chevrolet Corvair Greenbrier Sportswagon
1980 Dolomite Sprint project using brand new shell
2009 Mazda MX5 2.0 Sport
2015 BMW 118d Sport


Top
   
PostPosted: Tue Sep 25, 2018 3:37 pm 
Offline
TDC Member
User avatar

Joined: Fri Jan 06, 2017 11:14 pm
Posts: 223
Quote:
Quote:
Hi all. I am sure this has been covered many times before, but does anyone have any recommendations for sealing a gearbox tunnel?

I've removed mine to deal with some grot (caused likely by the seal failing in the first place), so after I have cleaned it all up and dealt with the rust I will want to seal it properly.

Any ideas much appreciated.

Kind Regards

MC
What you need is dumdum sealant, but they stopped making it. Basically a flexible sealant that doesn't set.

I am going to try a couple of strips of universal weather seals on mine, to see if they will work.
There is panel sealant which comes as a tape - a modern version of dumdum

_________________
1972 Spitfire MK IV
1972 Stag
1980 Sprint

1962 Land Rover Series 2a
1961 Land Rover Series 2a (under restoration)
1983 Land Rover Series 3

1995 Suzuki Samurai SJ413

1972 MGB GT (banished for being too tight to fit in it)


Top
   
PostPosted: Tue Sep 25, 2018 4:46 pm 
Offline
TDC Member
User avatar

Joined: Mon Aug 10, 2015 7:20 pm
Posts: 1185
Location: Huntingdon
I would have thought that something modern like Sikaflex 512, Tiger Seal or butyl rubber caulking strips would outperform that old Eldro Dumdum stuff anyway.

_________________
Current fleet: Triumph Dolomite Sprint '75, Daihatsu Fourtrak, Honda CG125, Yamaha Fazer 600, Shetland 570

Disposal fleet: Golf GTi 16v MK3 Anniversary

Past fleet: Triumph 2000, Lancia Beta Coupe, BL Mini Clubman, Austin Metro, Vauxhall Cavalier MK1 & MK2, Renault 18 D, Rover 216 GSI, Honda Accord (most expensive car purchase, hated it on pickup from dealer, was made out of magnetic metal as only car I've ever been crashed into, 4 times), Golf GTi MK3 16v x 3


Top
   
PostPosted: Tue Sep 25, 2018 5:21 pm 
Offline
TDC Member

Joined: Fri Jan 08, 2016 9:00 pm
Posts: 860
Quote:
I would have thought that something modern like Sikaflex 512, Tiger Seal or butyl rubber caulking strips would outperform that old Eldro Dumdum stuff anyway.
I don't know anything about Sikaflex 512 but I wouldn't use Tiger Seal - you want to get the tunnel off now and then! :D


Top
   
PostPosted: Tue Sep 25, 2018 5:47 pm 
Offline
TDC Member
User avatar

Joined: Mon Aug 10, 2015 7:20 pm
Posts: 1185
Location: Huntingdon
Oh yeah, good point! :oops: Forget those first two then, seal really well, permanently... A non setting mastic such as a poly butyl rubber caulking then, I've used IDL99 on my boat windows and deck, definitely waterproof and flexible.

_________________
Current fleet: Triumph Dolomite Sprint '75, Daihatsu Fourtrak, Honda CG125, Yamaha Fazer 600, Shetland 570

Disposal fleet: Golf GTi 16v MK3 Anniversary

Past fleet: Triumph 2000, Lancia Beta Coupe, BL Mini Clubman, Austin Metro, Vauxhall Cavalier MK1 & MK2, Renault 18 D, Rover 216 GSI, Honda Accord (most expensive car purchase, hated it on pickup from dealer, was made out of magnetic metal as only car I've ever been crashed into, 4 times), Golf GTi MK3 16v x 3


Top
   
PostPosted: Tue Sep 25, 2018 7:11 pm 
Offline
TDC Oxfordshire Area Organiser

Joined: Sun Oct 08, 2006 3:32 pm
Posts: 157
Spot on gents, thanks for the replies.

These all look like viable options and I will look at a 'Dum Dum' equivalent or the neoprene option.

Cheers.

MC


Top
   
PostPosted: Thu Sep 27, 2018 6:12 pm 
Offline
TDC Member
User avatar

Joined: Fri May 06, 2011 5:11 pm
Posts: 334
I used this:-

http://www.jamespaddock.co.uk/gearbox-tunnel-seal-3


Top
   
PostPosted: Sun Sep 30, 2018 10:07 am 
Offline
TDC Member

Joined: Sun Jul 08, 2012 7:22 pm
Posts: 146
I went through this a few weeks ago, butyl strip was recommended by a member and this I used. 8mm strip, on a roll, warm it up it goes nice and soft, I then bolted it down with 6mm nuts and bolts for added strength. The strip takes up all the varying gaps around the tunnel and never sets so can be easily removed.
I did get some rolls of neoprene foam but found this a little tricky on the varying bends plus then adding all the bolt holes, I did however use the foam on the straight bits at the very top front.

Hope that helps.

Got the butyl from eBay, the branded one in a yellow box if you search.

Chris.


Top
   
Display posts from previous:  Sort by  
Post new topic  Reply to topic  [ 19 posts ]  Go to page 1 2 Next

All times are UTC


Who is online

Users browsing this forum: Google [Bot] and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Limited