M38 fuel linkage help

vrod02 · Posted: Wed Nov 30, 2011 1:34 pm Post subject: M38 fuel linkage help

Short story is this.
Bubba installed a f-head.
I installed 2a lhead.
I have no linkage from pedal to carb as well as no vacuum lines.
I have the correct ys installed, correct fuel pump is on the way, oil bath breather is painted and ready to install.

I have searched for a exploded view pic with parts with no luck.
Somebody kick me in the right direction please! Smile

heres some pics
Thanks in advance Barry

Is this part right?

evanso1975 · Posted: Wed Nov 30, 2011 2:56 pm Post subject:

Check out page 65 of the G740 ORD-9, available to download here (5th link down):

http://www.willysmjeeps.com/v2/modules.php?name=Downloads&d_op=viewdownload&cid=39

This may help with the vent lines (late M38 is about half way down the page, early M38 is to the bottom):

http://www.cj3a.info/sibling/m38vent/vent.htm

Gas pedal linkage is very similar to the MB/GPW jeeps. You can probably just make out the M38 linkage here:

Hope Wes doesn't mind me raiding his photo album! Very Happy

And here's a good photo of an MB/GPW linkage:

http://www.g503.com/forums/viewtopic.php?f=4&t=55336

Btw, do you have a copy of Ryan Miller's M38 reference guide? If not, I suggest you get one; it's worth it's weight in gold!
_________________
Owen

1951 US Air Force M38
1944 F-1 1/2-ton Airdrome Trailer
1940 C15 Chevrolet CMP 11-cab
1939 DKW KS200 Motorcycle
MVT # 19406

vrod02 · Posted: Wed Nov 30, 2011 3:30 pm Post subject:

Thank you sir Evan!

SledDog · Posted: Wed Nov 30, 2011 3:48 pm Post subject:

Sorry to barge in but I keep hearing about Ryan's M38 reference book. Who currently sells the book?

wesk · Posted: Wed Nov 30, 2011 4:26 pm Post subject:

Take a peek at my photo album M38 fuel system page:
http://www.willysmjeeps.com/v2/modules.php?set_albumName=album83&op=modload&name=gallery&file=index&include=view_album.php&page=2

_________________
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

vrod02 · Posted: Wed Nov 30, 2011 4:49 pm Post subject:

Well that just got simplifed!
Thank you Wesk!
The oil line your speaking of lubes the timing chain?
Can I rob the foot pedal linkage that bolts to the engine off a parts jeep 2a?

wesk · Posted: Wed Nov 30, 2011 5:13 pm Post subject:

It should work. I believe the only real difference is the rod at the pedal due to the M38 pedal to rod connection.

That oil line is normally the pressure line to the oil filter. You shouldn't run it without the filter. Also it should be at least a 2 ply fabric layered line with a separate liner skin. Saving a dime there can cost you dearly on the road both in money and labor to remove the pump to deal with the barb and hose fitting. A healthy engine in cold weather on startup can throw 80 PSI at that hose no matter where the end of it goes. Is that a timing chain 638632 engine or a timing gear 641087 engine?
_________________
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

vrod02 · Posted: Wed Nov 30, 2011 5:25 pm Post subject:

I believe timing gear. I had the motor overhauled and cover was installed . This picture shows front of motor where the oil line in ? was run to.

vrod02 · Posted: Wed Nov 30, 2011 6:58 pm Post subject:

Got it, oil line. does the exit line out of the oil filter canister go to timing gear cover? The oil filter canister I got with the 2a engine is factory orange original. correct for m38 other than color?

wesk · Posted: Wed Nov 30, 2011 7:22 pm Post subject:

Yes the exit line from the oil filter goes to the timing cover. On the early chain drive cam engines it was helpful in lubricating the chain. On the gear drive cam engines it is not needed since there is a pressure port and nozzle at the front of the block connected to the main oil gallery that sprays at the two gears where they mesh. The timing cover on your block is the later gear drive cover.

The civvy Fram oil filter that came with your engine is not the same as the original Cuno Filter all production M38's came with. Nor is the same as the military Junior filter that often replaced the Cuno's in the field and was used on the WWII MB and the later M38A1.

Here's the Cuno on a M38

Here's the military junior on a MB.
_________________
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

evanso1975 · Posted: Thu Dec 01, 2011 1:21 am Post subject:

vrod02 · Posted: Thu Dec 08, 2011 6:18 pm Post subject:

m38 Fuel pump is in need of repair,sent off. Can I trick the ys to do its job, fuel/air mixturepluging vacuum holes? . would like to fire engine this weekend

wesk · Posted: Thu Dec 08, 2011 8:15 pm Post subject:

Just hook a can of gas and a hose to the inlet port of the carb and hang it from the ceiling so it is a foot or two higher than the carb.
_________________
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

vrod02 · Posted: Thu Dec 08, 2011 8:58 pm Post subject:

Wesk right on time as usual. Thanks! what is the vacuum line on the YS's job?

wesk · Posted: Thu Dec 08, 2011 9:26 pm Post subject:

The YS only has two tubes. Fuel supply and bowel vent. I suspect you are referring to the bowl vent that goes over to the intake crossover pipe and allows dry clean air to replace fuel in the bowl as it feeds the engine and provides for the occasional release of trapped pressure.
_________________
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


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