Leebo3 Posted April 29, 2005 Share Posted April 29, 2005 Can someone please tell me what the diff ratios were in the mk1 escort's? My MK 2 is 2.2:1, trying to work out what it is out of. Thanks Quote Link to comment Share on other sites More sharing options...
Pushrod Posted April 29, 2005 Share Posted April 29, 2005 errrrrrrr are you sure ????? it's 2.2:1 Quote Link to comment Share on other sites More sharing options...
Leebo3 Posted April 29, 2005 Author Share Posted April 29, 2005 Yep, seems strange aye? Quote Link to comment Share on other sites More sharing options...
Pushrod Posted April 29, 2005 Share Posted April 29, 2005 In mk1's you could get from 3.7 to 4.4 and pretty much everything in between Quote Link to comment Share on other sites More sharing options...
Leebo3 Posted April 29, 2005 Author Share Posted April 29, 2005 Thanks, with my ratio it will mean SLOW acceleration but a high top end wont it? Quote Link to comment Share on other sites More sharing options...
Guest WESTCORT Posted April 29, 2005 Share Posted April 29, 2005 it cant be 2.2 bro... you would probly have a lower top end if it is.. ie you would get to like 70k's then wouldnt be able to go any faster haha unless of course you dropped a smallblock 8 in Quote Link to comment Share on other sites More sharing options...
Leebo3 Posted April 29, 2005 Author Share Posted April 29, 2005 Sorry, some idiot told me it was 2.2, just checked and it is 4.12!!! Quote Link to comment Share on other sites More sharing options...
atropine Posted April 29, 2005 Share Posted April 29, 2005 lol yeah.. ive seen very few under 3.2:1.. 2.7 was the lowest i can think of... 2.2 in a esky wouldnt move Quote Link to comment Share on other sites More sharing options...
Guest Eddie W Posted April 29, 2005 Share Posted April 29, 2005 Common standard ratio for an Esky was 3.9 with 12" wheels and 4.1 when on 13s . I think autos and sports had a higher diff. Eddie Quote Link to comment Share on other sites More sharing options...
Leebo3 Posted April 29, 2005 Author Share Posted April 29, 2005 Sports ran a 3.54 with 13's but mine is 4.12 with 13's. What advantage does this give over a lower diff? Quote Link to comment Share on other sites More sharing options...
atropine Posted April 29, 2005 Share Posted April 29, 2005 simply enough, higher acceleration, lower top speed.. well i guess thats the simple form.. but its not quite that simple.. mated to a sierra5 a 4.1 sounds pretty good to me Quote Link to comment Share on other sites More sharing options...
SYKOV6 Posted April 30, 2005 Share Posted April 30, 2005 when i first got the corty it had a 2.79 diff in it but ive seen 2.5 ratio 9in diffs Quote Link to comment Share on other sites More sharing options...
Guest dreadedretard Posted April 30, 2005 Share Posted April 30, 2005 What do they ratio's on the diffs even mean? lol i dont know anything. i got a FWD Quote Link to comment Share on other sites More sharing options...
SYKOV6 Posted April 30, 2005 Share Posted April 30, 2005 roughly translated a 3.55-1 diff = 3.55 turns of the driveshaft = 1 turn of the axle there are a few variables eg what gear your in and the size in dia of your tyres but most eskys with a 3.45 diff and a 4 speed gear box and 13in rims will do roughly 3200rpm-3500rpm in top gear at 100ks. most 4 cyl cars have quite low ratio diffs because they donot have a lot of hp they need a low ratio eg 4.11-1 to give the engine the required leaverage to drive the car forward at a reasonable pace. whereas 6 / 8 cyl cars have a lot more torque and can push a taller ratio eg 3.08-1 for the same effect as the other car. as 6/8 cyl cars generally do not have a high revving engine the top speed is not much higher than the 1600 esky with a low diff and may in fact have slighly less acceleration . more or less thats how it works very simple there are a lot of variables between makes and models so this theory is not acurate for all applications Quote Link to comment Share on other sites More sharing options...
Guest Eddie W Posted May 1, 2005 Share Posted May 1, 2005 In performance terms the ideal diff ratio will let you just max out the revs in top gear. I f you can't pull max revs in top then your diff ratio is quite possibly costing you acceleration and top speed. However for road use this would cost you fuel and possibly engine life. Eddie Quote Link to comment Share on other sites More sharing options...
Guest dreadedretard Posted May 1, 2005 Share Posted May 1, 2005 Cheers guys. Quote Link to comment Share on other sites More sharing options...
craigt Posted May 5, 2005 Share Posted May 5, 2005 I think the factory ratios are 4.4, 4.1, 3.9, 3.7, 3.5. There are plenty of aftermarket crownwheel and pinion sets available. I have seen 5.3:1 ratios in BDA rally cars Quote Link to comment Share on other sites More sharing options...
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