diff ratio

[westy12]

gday! why is it that i cant see the photos posted here? all im getting is a box with a cross in it?  i run a 3.08 diff behind a 202 on gas. im not sure if its the best for fuel economy but it takes off alright and cruises at 100 at about 2700 rpm. ill be swapping it for a 3.36 soon and comparing it with the 3.08 to see which has better ecomony, then sticking with the best one. take it easy.

[able]

where is this ratio stamp meant to be? or do i have to drop the tail shaft?
i have looked everywhere and i can only see the make.

[Warren]

able

get a wire brush and clean the disc that the black arrow is pointing at, that is were it normally is

Warren

[able]

the easiest way ive found.. cause i do it a bit lol.. love diff ratios! (only works on non lsd diffs which is almost all of em in beddys) is to jackup one wheel.. get someone to watch the wheel spin twice while you spin the tail shaft counting the no of turns.. so if the tail shaft turned 3 and a half to 2 turns of the 1 wheel then its a 3.5:1 ratio..

the reason for 2 turns not 1 is cause usually you would be turning the other wheel at the same time so it would be one.. this way you only have to jack up one wheel rather than 2!!

hope this helps..

ben

their is no stamp on mine but i just followed bens advice and i got exactly his example.

i put tape on the top dead center of my wheel and top dead center of the tail shaft.

i turned the wheel 2 turns and the tail shaft spun 3.5 times.

so that is a 3.5:1 ratio? like bens example?

if it is...  is that highway or the stranded i need to change type?

[ben]

you may have a beddy housing with a different centre.. rumors tell us the cresta gears fits straight into the centre of the beddy centre..

3.5:1 is good!!

ben

[able]

i cannot find a smiley face big enough! 

[Catcher]

Hi guys I hate to throw a spanner in the works but I have camper with a 202 and a trimatic, and a chev 12 bolt with a tall ratio of 2.3. On the freeway no problems, runs beautifully. Around the suburbs, a little sluggish off the the mark. I  have used this set up for a number of years and the guy who owned the car before me found it OK as well. I am going to change it to a 2.78 just to help with take off but otherwise very happy.

Phill

[ben]

hey catcher are you sure its 2.3:1? i have never herd of anything that low. the lowest i know is the salsbury 2.6 something :1

the tallest diff i ever herd of being used behind a 202 is morgans 2.92. and thats pretty tall. 2.3 would be insane with nothing in the van.. with all the camping gear you wouldnt get anywhere.

ben

[Bas NZ]

Hi guys. 3.5 behind a 202 is great, you won't get much better for low down and top end. Have had many ratio's but after saying that I do run a overdrive on the trimatic for the higher end on the open roads but more than not the overdrive stays off.

[JOE RYAN]

I have a SWB 78 camper fitted out with cupboards, water tanks etc on gas and petrol, 186 with trimatic and 3.55 HZ diff OK around town but a bit sluggish on the hwy. At 100 klm 3000 revs, 60klm 2000 rpm when the van was a manual revs about 400 less at 100 klm. I have a 2.78 to try out but I am concerned that it will be too tall around town


Joe