Advice

peterporsche · Post by **peterporsche** » Wed Jul 27, 2011 8:18 am

Hello everyone and and let me start by saying Sorry for some many questions all the time.
The thing I am wanting to know is when I have my propshafts (drive shafts)
shortned do i messure them when there all the way in or do i pull them out of the shaft a little i hope that makes sence lol

Post by **wesk** » Wed Jul 27, 2011 9:15 am

Collapsed length is the basic measurement method. Measure center of U joint to center of U joint.

53a1 · Post by **53a1** » Wed Jul 27, 2011 9:17 am

Go buy some stock ones off Epay and sell yours to bubba.

peterporsche · Post by **peterporsche** » Wed Jul 27, 2011 11:08 am

So when the jeep is sitting on the ground they would be closed?

53a1 · Post by **53a1** » Wed Jul 27, 2011 11:57 am

If they are closed and you compress the suspension, what do you think will happen? I suspect they should be in the middle.

peterporsche · Post by **peterporsche** » Wed Jul 27, 2011 12:10 pm

Yea thats a really good point but if thats the case it means when someone made them longer they put loads extra in becasue when there closed there only a few inch 2 long if i have them half way open they will be more like 4 or even 5 inch.

Bretto · Post by **Bretto** » Wed Jul 27, 2011 12:43 pm

Why are you shortening them anyay? Was she lifted and your going back to stock height?
Any good driveline shop will be able to remake them. Just get an accurate measurement center to center of the yokes with vehicle sitting level and stock weight on the suspenion.

peterporsche · Post by **peterporsche** » Wed Jul 27, 2011 1:04 pm

Yea putting it back to stock there's a machine shop just down the road from me that will do them then balance them for me.
I just have to tell him what size they should be I am just not sure where they should be when the jeep is unloaded on the floor as in closed half open etc

Post by **wesk** » Wed Jul 27, 2011 1:19 pm

All you need to get them corrected is the specified length measured in the accepted manner. Take all measurements with them removed from the jeep, fully collapsed and make the measurement between the centers of the U joints.

If you will tell me what model jeep you have I can give you the specific measurement for each shaft.

In the future when posting if you include your jeep model in the post title this will be much simpler.

To answer the other questions that popped up here I would not expect a gent in Great Britain to be seeking a new pair of shafts which would most likely have to be shipped across the Atlantic. And some folks try to arrive at a working driveshaft length by measuring the shaft installed at max travel points but this can lead to some problems if the shaft is either too short or too long to allow full travel. This is why it is best to deal with the factory blueprint specs when returning to stock configuration and leave the on vehicle measurements to the high performance mod guys.

RICKG · Post by **RICKG** » Wed Jul 27, 2011 1:21 pm

I REMEMBER IN AN EARLIER POST YOU SAID IT WAS
A '44 GPW CORRECT? YOU MIGHT WANT TO TRAILER IT
TO YOUR DRIVELINE SHOP SO THEY HAVE THE WHOLE
PACKAGE IN FRONT OF THEM WHEN THEY BUILD THE
NEW PARTS. THEY'LL BE ABLE TO GET CORRECT
MEASUREMENTS. JUST MY NICKEL'S WORTH.
IF YOU GO ARMED WITH THE MFG SPECS THEY'LL
BE ABLE TO SEE IF THERE'S BEEN ANOTHER MODIFICATION
PREVIOUS THAT WILL AFFECT MFG SPECS.

peterporsche · Post by **peterporsche** » Wed Jul 27, 2011 2:10 pm

Sorry I didnt think to put what year the jeep is Its a 1944 GPW

artificer · Post by **artificer** » Wed Jul 27, 2011 3:36 pm

P0900-85 TM 10 1513 [free download from JeepDraw] shows dimensions centre to centre front 21 11/16" rear 20 1/32" but you better check carefully or have whoever is doing the job measure.

peterporsche · Post by **peterporsche** » Wed Jul 27, 2011 3:53 pm

Thats a great help thank you very much

peterporsche · Post by **peterporsche** » Thu Aug 04, 2011 8:19 am

I know this may make me sound really dumb but I can't seem to find it on jeep draw

artificer · Post by **artificer** » Thu Aug 04, 2011 3:04 pm

Google jeepdraw TM 10 1513