can i fit a 1.9 petrol gearbox to my 1.6 diesel

Post by **dridgy** » 02 Jul 2007, 11:41

hi i have a 1.6d and i want to fit a 1.9 petrol gearbox to it.

is it a straightforward swop?

cheers
johnny

Post by **skell** » 02 Jul 2007, 12:59

Yes, you just swap the bellhousings and the input shaft (to swap input shaft all you have to do is remove a circlip, then pull a splined sleeve off the shaft, then the input shaft screws off. Not sure that the ratios in a petrol box will be right for a 1.6na diesel though.... and swap the mountings from the front end of the box too

What you do have to watch is what type of gearbox's you are swapping, there are three different types of case, if you are swapping like case for like case it is possible:

091 early four speed
091/1 later four speed
094 five speed

Post by **dridgy** » 02 Jul 2007, 16:21

thanks its a 1.6d but i have put a 1.9d engine in and the gearings to low now.
i rekon a petrol box would be better as my brothers old dg petrol used to fly down the motorway.
so i rekon a box off one of these might do the trick.

how do you know its the same casing? just by looking or do they have a number or code on them?
cheers
johnny

Post by **oldiguana** » 02 Jul 2007, 20:02

eyup duck,im think i put a 1.9 petrol box in my 1.9n/a diesbag.....as mine would only do about 40mph ........does 55/60 nicely now...........nice easy remedy/swap............

Post by **dridgy** » 03 Jul 2007, 08:50

did you have to match the casings oldie?
or did you just go buy a petrol gearbox and put it on?

cheers
johnny

Post by **"WEAZLECHIN"** » 03 Jul 2007, 10:18

youll still be revving the knackers out of it though(need an extra gear)

Post by **dridgy** » 03 Jul 2007, 11:48

so would i be better with a 5 speed box?
what would i need to swop that i spose extra gear linkges and leavers and stuff? seems like a lot of messing about?

would have thought a petrol 4 speed will be as good?

johnny

Post by **skell** » 03 Jul 2007, 12:52

johnny

check out ratios here

http://www.brick-yard.co.uk/VehicleSpec ... fo/gbx.htm

you can translate that into theoritical mph per rpm here

http://www.ukmotorsport.com/misc/gears.html

there's not a great deal of difference between four and five speed boxes, five speed will cost you much more and you will need the linkage too

I'm running a 1.9TD with a DU petrol box, it dropped the revs plenty compared with the box from the 1.6na that it replaced (can't remember what the code was but final drive was 5.86). I'm running slight oversize tyres too.

which end of kent are you? if you need a hand let me know, I'm probably not too far from you.

Post by **"WEAZLECHIN"** » 03 Jul 2007, 19:12

better off altering the ratio by putting some 16" or 17" ml alloys with 275 tyres on. they look good too