View previous topic :: View next topic |
Author |
Message |
4x4M38 Member
Joined: May 30, 2014 Posts: 3440 Location: Texas Hill Country
|
|
Back to top |
|
|
Kendall Member
Joined: Feb 25, 2006 Posts: 344 Location: Wichita, KS
|
Posted: Sat Nov 11, 2017 10:38 am Post subject: |
|
|
These are what I modified and currently have on my M38-
Trico 7017830. Then there is a paper sticker on the back side that has the number SK 527-16.
Kendall _________________ 1951 M38
1952 M38
1952 M38A1
1942 Dodge WC-55
1951 M100 trailer
1942 Ben Hur trailer |
|
Back to top |
|
|
4x4M38 Member
Joined: May 30, 2014 Posts: 3440 Location: Texas Hill Country
|
|
Back to top |
|
|
Kendall Member
Joined: Feb 25, 2006 Posts: 344 Location: Wichita, KS
|
Posted: Sun Nov 12, 2017 7:47 am Post subject: |
|
|
Brian,
What I would recommend is for you to buy one (or two) of the above mentioned wiper motors. Then instead of comparing spec sheets you have it in hand and can make the necessary modifications work. I don't know what it means that the shafts are too short. The MUTT shafts are too long and have to be cut shorter and then narrowed down and threaded to accept the acorn nut. That is what I have done and they work (except I don't drive this jeep in the rain so can't say for sure how well they do work. I know that the motors worked very well while I was testing them).
Kendall _________________ 1951 M38
1952 M38
1952 M38A1
1942 Dodge WC-55
1951 M100 trailer
1942 Ben Hur trailer |
|
Back to top |
|
|
4x4M38 Member
Joined: May 30, 2014 Posts: 3440 Location: Texas Hill Country
|
|
Back to top |
|
|
oilleaker1 Member
Joined: May 14, 2009 Posts: 971 Location: South Dakota
|
Posted: Thu Nov 16, 2017 7:29 am Post subject: |
|
|
All the M38 and M151 wiper motors are simply a joke. Even brand new ones. I think the vacuum case on them which is smaller than a CJ3A type trico is the reason. Not enough power. All the double acting fuel pumps I've tried, M38, civi CJ, and even Chevrolet are also a waste of money. They do not help. I was looking into a electric vacuum pump to try and boost the vacuum supply when it finally hit me, why do that? Just buy a electric wiper motor and be done. The best are the American Bosch series. Some have 2 speeds, some are 6 volt, some are 12 volt, switch on the motor, or separate dash switch. They are metal fabricated and very tough. They also are small enough to fit right in place of the vacuum units. They show up on ebay if you watch.
So, the only thing in my mind the vacuum units are good for is looks, correctness, and a good work out for your free hand! John |
|
Back to top |
|
|
dpcd67 Member
Joined: Nov 25, 2016 Posts: 187 Location: Iowa
|
Posted: Fri Dec 08, 2017 10:19 pm Post subject: |
|
|
Yes, I am installing 151 wiper motors on my M38 now. The shafts are indeed longer, as stated, so I will cut them off, file the ends and thread them for the brass nut that holds the M38 wiper arms. I think they are 10-32.
The other difference is the inlet tubes are straight on the 151s and curved 180 degrees on the M38s. I don't care how vacuum wipers work as I don't drive my vehicles in the rain. And use rain ex. But most of them work well enough. Maybe your vacuum system has a leak. |
|
Back to top |
|
|
wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16225 Location: Wisconsin
|
Posted: Fri Dec 08, 2017 10:48 pm Post subject: |
|
|
I ran the stock Vacuum wipers on my M38A1 from 86 thru 90 in Rapid City SD no issues. Having started out in the early 60's with my first three cars having vacuum wipers I learned to properly maintain them and not expect more than they were capable of like trying to pass another vehicle going up hill while accelerating with a 4 or 6 cyl engine in a driving rain! I ran stock vacuum on my GPW 71-73 in Louisiana, on my 60 CJ3B 96 thru 2002 and my Dodge M37 from 2006 thru today all without any serious handicap. The GPW and M38A1 were both daily drivers. The M38A1 got me the 20 miles each way from Blackhawk SD to Ellsworth AFB SD and back in freezing rain, snow with no difficulties.
If I planned on driving my current M38 over 55 on highways everyday I obviously would not have a bone stock M38 and would use electric wipers so I wouldn't have to slow down so much. _________________ Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100
Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php |
|
Back to top |
|
|
RonD2 Member
Joined: Oct 02, 2014 Posts: 1887 Location: South Carolina, Dorchester County
|
Posted: Fri Dec 08, 2017 10:52 pm Post subject: |
|
|
I'm going to take the shortcut with a pair of M151 wiper motors and mount them behind a couple of spacers each so I don't have to disassemble and cut-weld the shafts. A little light filing to get a die on the shaft for an acorn nut is about my top speed.
Best compromise I can do right now. Sure as h*ll ain't paying $150 for a NOS M38 motor. That seems to be the asking rate now and there appears to be plenty of them popping up lately. What are they made of --- gold? Good grief.
I paid $60 for a pair of NOS M151 motors - delivered. That's more like it. Especially since the truck isn't likely to get wet anyway. And I've got goggles. _________________ Ron D.
1951 M38 Unknown Serial Number
1951 M100 Dunbar Kapple 01169903 dod 5-51
“The only good sports car that America ever made was the Jeep."
--- Enzo Ferrari
|
|
Back to top |
|
|
4x4M38 Member
Joined: May 30, 2014 Posts: 3440 Location: Texas Hill Country
|
|
Back to top |
|
|
oilleaker1 Member
Joined: May 14, 2009 Posts: 971 Location: South Dakota
|
Posted: Sat Dec 09, 2017 8:28 am Post subject: |
|
|
Just don't turn them on until you are going down hill.! Also turn on one at a time while shutting off the other, but on M38's the shutoff feeds both, so maybe a extra shutoff is in order. |
|
Back to top |
|
|
Bretto Member
Joined: Nov 24, 2010 Posts: 1390 Location: Orem, UT
|
Posted: Sat Dec 09, 2017 9:05 am Post subject: |
|
|
oilleaker1 wrote: | Just don't turn them on until you are going down hill.! Also turn on one at a time while shutting off the other, but on M38's the shutoff feeds both, so maybe a extra shutoff is in order. |
An extra valve would be nice. In a pinch Ive had to pull off and kink the rubber line of the passenger side in order to get more out of the driver. _________________ Brett
'51 M38
PHOTO DIARY OF MY BUILD |
|
Back to top |
|
|
4x4M38 Member
Joined: May 30, 2014 Posts: 3440 Location: Texas Hill Country
|
|
Back to top |
|
|
wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16225 Location: Wisconsin
|
|
Back to top |
|
|
oilleaker1 Member
Joined: May 14, 2009 Posts: 971 Location: South Dakota
|
Posted: Sat Dec 09, 2017 10:33 am Post subject: |
|
|
Just pull the hose off and suck on it! |
|
Back to top |
|
|
|