can anyone tell me how to tell the differance between a petrol and diesel Felicia box. I really think my pickup has a petrol box.

iirc no markings apart from a part number on the bellhousing

not an awefull lot of difference except gear ratios/final drive ratio.

there are 2 different 'series' of gearboxes in the felicia but they are all interchangeable between models

Gear ratios are the same, just the final drive. If your diesel has a petrol box in it, it'll rev more, but I don't have figures here, nor a rev counter on my mum's diesel felly to go from.... if I get a chance I'll drive it on the rev limiter in a gear and let you know how fast it is...

Petrol boxes can have either a 3.83 or 4.12 final drive, whereas diesels are 3.58. The are a few small differences in ratios pre-1997, but nothing major. I remember this coming up a while back so I'll see if I can find the thread with more numbers in it.

Couldn't see the one I was thinking of, but found the one with all the numbers.

In brief, using the '97 onward figures, 60mph in 5th would show:

2470 rpm with a diesel box - code 1

2646 rpm with a 3.83 (1.3/1.6) box - code 6

2842 rpm with a 4.12 (1.3) box - code 4

Hope that helps.

edit 2: In fact, it seems the serial number stamped on the top casing between the bellhousing and the diff is in the format XXXXXXX A B C D, where A and B give the year/month of manufacture and C gives the final drive type - I've added the codes above.

Edited 24 January, 201115 yr by RobinSLXi

diesel box should see around 95mph on the goverenor where a petrol one would be around 82ish (all on private roads of course ossifer)

diesel box should see around 95mph on the goverenor where a petrol one would be around 82ish (all on private roads of course ossifer)

In my Fun I have seen the needle get to 100 Mph. (No truckman, rear seats deployed and the windows open). Not entirely sure what the BMW driver I was behind must have thought when he looked in the mirror.

In my Fun I have seen the needle get to 100 Mph. (No truckman, rear seats deployed and the windows open). Not entirely sure what the BMW driver I was behind must have thought when he looked in the mirror.

Well, according to the AA road test the 1.6 hatch will top out at 104, so that's not bad going!

mine bounces off the rev limited at about 120mph but I have a 1300mpi box on mine, the engine still wants to give more though

Edited 25 January, 201115 yr by TeflonTom

so if i can get this right, the difference from a 13gearbox to a 19diesel is just the final drive? also anyone using a 13 petrol gbox on 19diesel engine? does it sound a bit noisy ?

the diff unit is a lot stronger on a diesel box and you will find that the engine is revving harder at 60mph with a 1.3 box