Top end speed

[antonia]

Hi, just incase you don't read the post on my previous topic (transit not starting and smoking) you were all right, it was the timing and is now fixed so thanks so much!

Anyway, new issue,

Our new (to us) transit, P reg is quicker that our old H reg up hills, has more grunt (technical term which Kev told me!) but the top speed on the flat is 75-80, whereas our old H reg would do 85-90 (the proudest moment was when it finally hit 100 going down a 3 mile long mountain raod in Spain).

Kev has taken out the butterflies, blocked off the exhaust gases and put a quarter turn on the pump (once again, apologies if this doesn't make sense)

Any ideas?

[100ps_drw_hicube]

what stud wheels have you got? you could try another diff

[100ps_drw_hicube]

just looked in your other post a 100 will be 5 studded wheels so you should be able to get another diff madmark will know more about the different ratio's you could get
what ratio diff is in there at the mo it should be on a little tag round the diff area

[madmark]

4.56 is the normal for a 100 , this could be changed to 4.11 but these are very hard to find now! this will give you better motorway speed but not good for towing!
i had a brandnew 2ltr dohc i orderd it with a 4.1 diff on the motorway with me caravan i was in 3rd gear up the hills, when i had the 100 td that was 4.56 it stayed in 5th all the time even overtook all the big range rovers on the hills!

[100ps_drw_hicube]

can you still get the 4.11 diff from fords???

[madmark]

mate yes you would be able to buy a diff from fords! i think they are around £1000 plus vat! but this is only for the swb or long wheelbase 100 you cant get one in yours mate!

[100ps_drw_hicube]

mate yes you would be able to buy a diff from fords! i think they are around £1000 plus vat! but this is only for the swb or long wheelbase 100 you cant get one in yours mate!

i know thats why as soon as summer is here i am going to sell her and get a 100 lwb cant decide for td or dohc

is there any transmission people who would know more on this as they probably see loads of these diffs

[stevew]

Bah! That's just giving up too easy!
Is there no way of changing the internals in the diff?
What about in the gearbox?
Fitting and overdrive to the MT75?
Some where in the prop shaft?
Something must be possible!
Steve

[Luke]

Bah! That's just giving up too easy!

Something must be possible!
Steve

bigger tyres

[stevew]

Yes! Jumbo tractor wheels on enormous hub extensions!

[100ps_drw_hicube]

what about foreign transits do they use the same diff ratios as us ?? is there anything else out there that uses a similar diff??

[stevew]

Like this:



Economy probably not too good though!

[Luke]

and i wonder what ratio diffs that has in 25:1 ?????

[100ps_drw_hicube]

i saw that once at a display was an awesome sight

[stevew]

Good round town then!

Seriously though, what about transits for other contries as hicube says?
Can I fit a five stud type axle and switch the hubs for 6 stud? I don't need the loading capcity but appreciate the ground clearance. In fact I only bought a van with 6 stud wheels because I thought it looked cooler!
Steve