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willysmjeeps.com :: View topic - L134 Piston question
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L134 Piston question

 
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AeroE
Member


Joined: Aug 31, 2008
Posts: 49
Location: SE MN

PostPosted: Mon Jun 20, 2011 10:20 am    Post subject: L134 Piston question Reply with quote

Are the pistons for the L 134 engine and M38A1 F head the same? Federal lists them as such, but MAHLE lists pistons only for the F head. I prefer MAHLE.
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wesk
Site Administrator
Site Administrator


Joined: Apr 04, 2005
Posts: 16225
Location: Wisconsin

PostPosted: Mon Jun 20, 2011 11:11 am    Post subject: Reply with quote

I see that happen often. Many manufacturers will list them as F-134 when their product fits both. Look at the 09 Mahle catalog http://www.mahleclevite.com/publications/PI-20-09.pdf and go to jeep then down to the Block 1 entry:
Quote:
YEAR VIN PART NUMBER SPECS QTY RINGS PIN DIA COMP HGT
1 134 CID (2.2L) F-HEAD L4 3.13" (80mm) 1
1971-1945
1968-1967
1968-1967
-
J
4
224-2756 Flat Head
L and F, Flat head. 3 rings only
piston.
4 3/32"

3/32"
3/16"
0.812" 2.167"
STD, .020", .030", .040", .060" Pin Hole Location: Center
Piston Ring Sets: Cast Iron: 5007
Premium: 4007


Just to be safe call their 800 number and verify.
_________________
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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AeroE
Member


Joined: Aug 31, 2008
Posts: 49
Location: SE MN

PostPosted: Mon Jun 20, 2011 11:46 am    Post subject: Reply with quote

Thanks-I did confirm with MAHLE that they are the same. On the bottom of the catalog page, as you cited, they show “Flat head, L and F”.

I went with 5007 cast iron rings figuring I’d rather wear the rings than the block, and I don’t put that many mile on it.
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GPA
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Joined: Aug 07, 2008
Posts: 216
Location: Hungary

PostPosted: Tue Jun 21, 2011 2:16 am    Post subject: Reply with quote

There is a difference in crown thickness and weight. F-head is thicker and heavier. But judging from experience in high performance engine building, even the thinner L-head piston is sufficient for F-head use. Wes?
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