diff ratio?

[payne'e]

can someone please tell me what ratio for an english diff, it has 36 teeth and i can turn the front flange just under 4 turns to 1 turn of the crown wheel. is it a 4.1, 3.89 ?

cheers karl

[Vista]

If it's just under 4 turns then I guess it's either a 3.77 or a 3.89 but I'm not sure how many teeth either of those crownwheels have.

[Posse]

Count all the teeth on the crane wheel and the same on the pinion and ill tell you i think lol

[X FLOW EDDY]

8 tooth pinion and 33 tooth crown wheel is a 4.1.

[payne'e]

there are 36 on crown and 9 on pinion

[over_head_cam]

36 and 9 would make it 4 dead

[DAZZA]

Ratman has a list

[Col-ashtonmobile]

you sure it,s not 34 crown wheel and 9 pinion cos that,s 3.7

[DAZZA]

39 x 11 =3.54

34 x 9 = 3.7

35 x 9 =3.89

39 x 10 =3.9

37 x 9 = 4.11

33 x 9 = 4.125

40 x 9 = 4.44

[X FLOW EDDY]

39 x 11 =3.54

34 x 9 = 3.7

35 x 9 =3.89

39 x 10 =3.9

37 x 9 = 4.11

33 x 9 = 4.125

40 x 9 = 4.44

 

How come my genuine ford 4.1 CWP set is stamped 8-33 then ? Have just been into the shed and double checked !!!

[BaileyMex]

35 x 9 =3.89

39 x 10 =3.9

 

sorry to butt in, but would there be any noticable difference in drive between the above two ratio's and what would they have come out of?

 

[payne'e]

cheers peeps just double checked and it's 35 crown 9 pinion lol,so that makes it 3.89 anyone wanna buy it

[BaileyMex]

cheers peeps just double checked and it's 35 crown 9 pinion lol,so that makes it 3.89 anyone wanna buy it

 

Possibly, it it just the CWP or a complete diff?

 

Pm me if you wanna sell it

[Vista]

35 x 9 =3.89

39 x 10 =3.9

 

sorry to butt in, but would there be any noticable difference in drive between the above two ratio's and what would they have come out of?

 

 

No I doubt very much you'd notice it mate, it might make a few nanoseconds difference up the 1/4 mile though.

 

39 x 11 =3.54

34 x 9 = 3.7

35 x 9 =3.89

39 x 10 =3.9

37 x 9 = 4.11

33 x 9 = 4.125

40 x 9 = 4.44

 

How come my genuine ford 4.1 CWP set is stamped 8-33 then ? Have just been into the shed and double checked !!!

 

The man has a point, do the maths. 33 x 9 is actually 3.66:1. It should be 33 x 8 for 4.125:1

[Tom]

35 x 9 =3.89

39 x 10 =3.9

 

sorry to butt in, but would there be any noticable difference in drive between the above two ratio's and what would they have come out of?

 

 

not really, but if you think if they both did 100 revolutions the 3.9 would be 1 whole turn ahead of the 3.89 and it doesn't take long to do 100 turns