price Posted January 27, 2010 Share Posted January 27, 2010 i have a herald 1360 and thinking of fitting an overdrive what type can i fit to my standard box it seems to be two types thay use d and j . i now i will need a shorter prop and a few other parts as well but i am trying to fine out best type and as strait foward job Link to comment Share on other sites More sharing options...
Clive Posted January 27, 2010 Share Posted January 27, 2010 Not at all easy to fit an overdrive to a std gearbox, lots of bits needed. Best bet is a complete overdrive gearbox. A fair list of parts needed:Overdrive gearboxCorrect propshaft to suitrubber mountmount plateswitch (either column or on the gearstick)angle drive Speedo cableIf you get a (spitfire 1500) j type overdrive you would also need a different clutch plate.A secondhand overdrive conversion with a few new bits can cost from £200, and you may be lucky and the gearbox be OK. If buying from a trader with recon parts......you really don't want to know :'(As to d type or j, j is a bit stronger, but either will work fine and not struggle in a herald. Just what turns up. Link to comment Share on other sites More sharing options...
Richard B Posted January 27, 2010 Share Posted January 27, 2010 D'type is easier as it uses the standard 1300 clutch. Also the 3-rail is a nicer gearchange & the Vitesse Non-OD 'may' fit. J'Type will handle (lots) more power, but not really relevant to a 1300 engine. ps MkIV Spitfire is the best. D'Type, synchro first and 3-rail! Link to comment Share on other sites More sharing options...
DaveKent Posted January 27, 2010 Share Posted January 27, 2010 mk4 3 rail with j type is best! Link to comment Share on other sites More sharing options...
Richard B Posted January 27, 2010 Share Posted January 27, 2010 If you can find one..... ;) Link to comment Share on other sites More sharing options...
DaveKent Posted January 28, 2010 Share Posted January 28, 2010 yes i had to travel salisbury to get mine!!! ;) Link to comment Share on other sites More sharing options...
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