Finding out whats inside your Rancho box

[Stefan Rossi]

Is there any way of finding out from Rancho what my gearbox has in it?

It's a pro street but the guy I brought it off (brand new) didn't know the spec. When I drove it for the first time I found it has a close 3rd gear, then I thought 4th would be close too but I shifted and 4th was very long. maybe 0.89 not sure.

I have no idea on the r&p or anything and I'm looking at selling it to upgrade to a pro drag.

Can I phone up Rancho with the serial number and will they have the spec?

All the other pro streets I've driven didn't have a close 3rd in them :s

Regards,

Stef

[Stefan Rossi]

Can anyone help at all?

stef

[Taylor]

The answer is yes...sort of...maybe ...kind of!  Lol here's what you do, is the trans in the car with an engine?   If so, it's much harder.  If there is no engine, stick a clutch disk on the input shaft and make a mark somewhere on the outside of it.  Mark one of the splines on the axle, or mark the drum and backing plate. Put it in 1st and turn the clutch disk until the axle turns 1 time.  Make note of how many times the clutch disk turns.  Do it in every gear and post them here.  We will be able to tell you what the most likely ratios are.

[Stefan Rossi]

Wow okay haha I will get on it next time the engine is out! Ive just put it back in so may be a couple of weeks yet! Thanks for the help!

[Stefan Rossi]

Just a thought, could I not jack the car up, put it in gear and do the same thing using the crank pulley?

Stef

[dyno don]

Call Rancho performance @ 800 304 8726 and ask for Mike Herbert  and give him your serial number info or e mail them @ WWW.RANCHOTRANSAXLES.COM  with the info and any questions and or concerns and they will be glad to help you. Good Luck, Dyno Don "The Voice"

[Stefan Rossi]

That is a much easier way to find out! Thanks alot for the advice I will shoot them an email!

Stef

[Hippy neil]

The answer is yes...sort of...maybe ...kind of!  Lol here's what you do, is the trans in the car with an engine?   If so, it's much harder.  If there is no engine, stick a clutch disk on the input shaft and make a mark somewhere on the outside of it.  Mark one of the splines on the axle, or mark the drum and backing plate. Put it in 1st and turn the clutch disk until the axle turns 1 time.  Make note of how many times the clutch disk turns.  Do it in every gear and post them here.  We will be able to tell you what the most likely ratios are.

   The next time l've got my motor out l may pm you to let me know wot l have in my gearbox,its a jack knight box built for a 200bhp fiat twin cam motor.but did'nt have the spec when l got it.thanks neil