stevepennington Posted April 19, 2003 Share Posted April 19, 2003 i am currently running a 7 with a ford x flow engine and i presume a ford 4 speed box.I want to fit a 5 speed box and want to know what options are available to me from a straight forward swap onwards-thanks for your help Link to comment Share on other sites More sharing options...
Chris K Posted April 20, 2003 Share Posted April 20, 2003 Hi, do a search in the archives for type 9 conversion or simular n you will find several threads about this.. no such thing as a straight swap Im afraid.. you looking at a prop shaft swap (or modding the old one) gearbox mounts to be fitted (unless car is newer than (91??)) as std Caterham used the 2.8ltr ratios.. but your best bet is to get custom ratios from BGH/RnR trans/etc as most have said here that the 1st on the 2.8Gb is a bit short Rgds Chris Now, Beakie, we'll just flip this switch and 60,000 refreshing volts of electricity will surge through your body. Ready?.. See my CAR here Link to comment Share on other sites More sharing options...
Bananaman Posted April 20, 2003 Share Posted April 20, 2003 west is best Link to comment Share on other sites More sharing options...
Chelspeed Posted April 21, 2003 Share Posted April 21, 2003 Why do you want to change? Better ratios for competition? Stronger gearbox for future power hikes? Relaxed cruising gear for the motorway? Very different answers depending on what you're after. Link to comment Share on other sites More sharing options...
timbo Posted April 22, 2003 Share Posted April 22, 2003 ITS NOT A STRAIGHT FORWARD SWOP FROM 4 TO 5 SPEED 1st - the 4 speed runs a remote shift - the gear lever mounting bracket needs cut out. 2nd - the 4 speed runs has an integral bellhousing. the 5 speed box will need a new bellhousing ( I can't remember - but I think it needs new clutch kit & release bearing aswell??) 3rd - the '4 speed chassis' has a welded steel plate across the transmission tunnel. this acts as the mounting plate for the 4 speed gearbox. It is positioned exactly for the shorter 4 speed box. If you go 5 speed this plate must be axed out altogether (grinder job). The 5 speed won't fit without this action. Then a new plate (from caterham) must be bolted in in the correct position (further back in the tunnel) to secure the 5 speed g/box mount. Easy eh!! 4th - you'll need a new quickshift gear lever 5th - you'll need a new propshaft for the 5 speed (shorter than 4 speed) I can say this with experience. Not easy and costly. Sourcing a 5 speed box is the simple bit. JLZ7447 1.6K this week Link to comment Share on other sites More sharing options...
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