mantaboy89 Posted March 24, 2010 Share Posted March 24, 2010 Does anyone know what is involved in swapping a four speed for a 5 speed, ive got a 4 speed cav mk1 hatch and the thrust has gone and taken out the fork and since i am doing a v8 conversion on my manta i thought i would pinch the box for the cav but i am not sure how easy it is, can someone please help with info, Thanks Josh Quote Link to comment Share on other sites More sharing options...
spiney_norman Posted March 24, 2010 Share Posted March 24, 2010 Hey Josh, you need the 5 speed box and propshaft from the Manta, as well as the raised section from the top of the 5 speed transmission tunnel. Basically you need to cut a hole in the top of the original 4 speed tunnel and fit the raised 5 speed section in it's place as the gear lever sits further back on the 5 speed box. Oh, you need to modify the rear gearbox mount crossmember as well, as the 5 speed box is longer. If it's any help you're welcome to pop down to Cardiff and see my Sportshatch which has had this conversion done! Quote Link to comment Share on other sites More sharing options...
2908642343 Posted March 24, 2010 Share Posted March 24, 2010 To carry out the change of the transmission tunnel could (and i say could) lead to your car requiring an SVA as you will have altered the shell of the car. There is a thread within the members section that discusse the SVA. There is also another method available that does not involve cutting the transmission tunnel, as i have recently done the 4 to 5 speed conversation without cutting or changing the transmission tunnel. Will be doing a short write up on how it is done when i get an hour or two spare. John Quote Link to comment Share on other sites More sharing options...
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