Click here to sign up  Click here to go to the galleries  Click here to go to the code of conduct  Click here to go to the video page  Click here to go to the SW Meets page

Thread: Marina / Ital gearbox parts.

Results 1 to 9 of 9
  1. #1 Marina / Ital gearbox parts. 
    frequent forum contributor Club Member
    Join Date
    Jul 2016
    Location
    St Austell, Cornwall
    Posts
    538
    Hi guys,
    As in my rebuild diary I have got my gearbox in pieces and struggling to find a replacement reverse gear and idler.
    I can get a rebuild kit which includes bearings, seals and gaskets.
    I have put this pile of bits to one side to work on other bits and hopefully find replacements before I forget how it all goes back together.
    If anyone has any spares I would be very interested.
    Cheers, Martin.
    Reply With Quote  
     

  2. #2 Re: Marina / Ital gearbox parts. 
    frequent forum contributor Club Member stevejgreen's Avatar
    Join Date
    Nov 2011
    Location
    Somewhere in the world
    Posts
    2,997
    There are two different reverse gears 21 teeth on the earlier cars and 17 teeth on the later cars that were fitted to a Marina gearbox. As far as I am aware, you only find out what you have got once you have stripped the gearbox down, there are no external indications.
    Rimmer Bros should be able to help, or any other Triumph parts dealer.
    MOC member since 05/97
    1984 Marlin Roadster SWB.
    1800TC, Unleaded ported head, stage 2 cam. Ford Type 9 gearbox, Dolomite Sprint rear axle fitted with MGF disc brakes.
    Three core radiator, Renault Clio vented front discs.
    The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.

    Loads of Marlin Reference can be found documents here or there.
    Reply With Quote  
     

  3. #3 Re: Marina / Ital gearbox parts. 
    frequent forum contributor Club Member
    Join Date
    Jul 2016
    Location
    St Austell, Cornwall
    Posts
    538
    Ok thanks Steve,
    I have got 21 teeth on the idler and 33 teeth on the reverse gear.
    Are they interchangeable by using the matching pairs?
    Cheers,
    Reply With Quote  
     

  4. #4 Re: Marina / Ital gearbox parts. 
    Club Member lil_red_roadster's Avatar
    Join Date
    Nov 2011
    Location
    Telford, Shropshire
    Posts
    634
    I don't know the relevant part numbers to verify but might this be part of what you're looking for..?
    Early TR7 used a very similar 4-speed box.
    Marlin Roadster, LWB...1860 B Series + Ford Type 9
    Renault Espace 54mm front calipers, vented discs, cycle wings and adjustable tie-bars.
    Reply With Quote  
     

  5. #5 Re: Marina / Ital gearbox parts. 
    frequent forum contributor Club Member
    Join Date
    Jul 2016
    Location
    St Austell, Cornwall
    Posts
    538
    Thanks for that, asked the seller for dimensions on this idler and hopefully same size. Be able to purchase the rebuild kit then all I will need is the reverse gear then be able to rebuild.
    Cheers,
    Reply With Quote  
     

  6. #6 Re: Marina / Ital gearbox parts. 
    frequent forum contributor Club Member b_caswell's Avatar
    Join Date
    Nov 2011
    Location
    SE London
    Posts
    2,163
    Quote Originally Posted by meverett View Post
    Ok thanks Steve,
    I have got 21 teeth on the idler and 33 teeth on the reverse gear.
    Are they interchangeable by using the matching pairs?
    Cheers,
    Answer no the number of teeth are dependent also on the number of teeth on the lay gear(15) for 33 and 21 or 13 on the lay gear for 29 and 17 try this site the reverse gear is actually the synchro hub and costs 173. https://www.scparts.co.uk/sc_en/brit...e-1500.html#32
    Ben Caswell probably not the last word on anything here!!
    Reply With Quote  
     

  7. #7 Re: Marina / Ital gearbox parts. 
    frequent forum contributor Club Member
    Join Date
    Jul 2016
    Location
    St Austell, Cornwall
    Posts
    538
    With a donor gearbox purchased for a bargain 10 from eBay and a trip to Exeter to collect and I have got the gearbox rebuilt.
    Swapped the reverse gear, idler and laygear, new seals and gaskets and not forgetting the copper washer in the bell housing. Bit of paint and should be good to go. Selects gears nicely so must have gone back together correctly.

    IMG_3609.JPG
    Reply With Quote  
     

  8. #8 Re: Marina / Ital gearbox parts. 
    frequent forum contributor Club Member
    Join Date
    Jul 2016
    Location
    St Austell, Cornwall
    Posts
    538
    Ok, now I have rebuilt this gearbox ready for fitting I thought it would be a good idea to fill up with ep90 oil and spin it over with the drill on the first motion shaft.
    It was making a bit of noise in first gear (ticking) when the teeth are engaging. I have lifted the lid to inspect and tied it down to the reverse idler that seems to be slightly engaged when in first gear. All the other gears are quiet.
    I have used the 17 teeth idler, 29 teeth hub on the 13 teeth laygear from the donor gearbox and all the other gears are the same between both boxes. The donor gears looked in good condition with no major wear.
    Is this common on these gearboxes? I will try to upload a video and hopefully be able to hear it.
    Last edited by meverett; 12-05-2017 at 01:45 PM.
    Reply With Quote  
     

  9. #9 Re: Marina / Ital gearbox parts. 
    frequent forum contributor Club Member
    Join Date
    Jul 2016
    Location
    St Austell, Cornwall
    Posts
    538
    Reply With Quote  
     

Similar Threads

  1. Ital 1.3 gearbox
    By tonygards in forum Marlin parts For Loan or Swap
    Replies: 3
    Last Post: 27-05-2019, 12:09 AM
  2. Marina Ital brake pedal
    By beattock roadster in forum eBay:
    Replies: 0
    Last Post: 09-03-2017, 09:05 PM
  3. Marina/Ital switches
    By dcunn in forum Roadster
    Replies: 2
    Last Post: 08-12-2014, 11:06 AM
  4. Marina / Ital Rear Hub: Key and Oilseal
    By stevejgreen in forum Roadster
    Replies: 0
    Last Post: 07-06-2012, 09:37 AM
  5. Marina/Ital Spares
    By amalgamated users from prior forum in forum Roadster
    Replies: 0
    Last Post: 13-10-2004, 12:51 AM
Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •