Greenie Posted August 30, 2012 Share Posted August 30, 2012 I need a gearbox to go with a Spitfire Mk3 FD engine but having a bit of trouble tracking one down at a suitable price (cheap). Will a 3 rail box from a Mk4 fit as is?CheersSimon Quote Link to comment Share on other sites More sharing options...
Richard B Posted August 30, 2012 Share Posted August 30, 2012 Yes, actually its a better box. It has a synchromesh 1st gear :) Quote Link to comment Share on other sites More sharing options...
herald948 Posted August 30, 2012 Share Posted August 30, 2012 Richard_B wrote:Yes, actually its a better box. It has a synchromesh 1st gear :) ...and a slightly higher (lower numerically) 1st gear at that. Said all-synchro box is also a whopping 5/8" or so longer, but that usually isn't a fitting problem, as there's enough give in mounts and such. You will need to change the front u-joint flange on the propeller shaft to match the larger output shaft on the all-synchro box, though. Quote Link to comment Share on other sites More sharing options...
Greenie Posted August 31, 2012 Author Share Posted August 31, 2012 Many thanks - that should makes things a bit easier. Quote Link to comment Share on other sites More sharing options...
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