Mailing List flyrotary@lancaironline.net Message #16625
From: keltro@att.n <keltro@att.net>
Subject: Re: [FlyRotary] Re: Moroso Oil Pans for 13B
Date: Fri, 04 Feb 2005 23:25:57 +0000
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
ALL.
  Before anyone orders a "Moroso" oil pan be aware that they are made to
fit engines utilizing the early 1974 to 1985 front cover that has the studs
for the front engine mount......The bolt pattern is different than the 1986 to
1995 (And Cosmo) front cover that most are using and that "Conversion
Concepts" mount plates uses........If my memory does not fail me.....FWIW
--
Kelly Troyer
Dyke Delta/13B/RD1C/EC2




-------------- Original message from "Russell Duffy" <13brv3@bellsouth.net>: --------------

The Summit site shows both the 20942 and 20940 be "Rear Sump" oil pans. The Moroso site calls the 20942 a Deep Sump and the 20940 a Rear Sump. I spoke with a Moroso rep this morning in the fab shop and he said the 20942 is a  Front Sump. The instructions on the Moroso site for the 20942 say to install the oil pickup tube in the opposite direction. See note 4.
 
So,,,,, it would make since (to me)  that 20942 is a indeed a front sump in the car. You are building an RV8 right not a pusher.
 
 
Thanks for the instructions.  From the pictures on the Moroso site, I was able to tell that the 20942 was indeed a "front" sump.  Notice that the hole pattern is different on the front cover and rear housings, so you can tell which end is which.  Looks like the dipstick must go to the shallow section of the pan, which seems odd, but OK, I guess.  
 
BTW, the pan bolts are 6MM x 1.0.   With the steel pan, and Fred's mount plate, I was using 20 allen head bolts that were 25mm long, and 2 that were 20mm long.  All of these had one washer under them.  I figure the new bolts need to be 8mm longer, so 20 @ 33mm, and 2 @ 28mm.  I ended up getting several sizes from McMaster Carr, ranging from 22mm to 35mm length.  I also got a bunch of washers, so I should have it covered.  
 
I tried to find studs, but couldn't come up with a good solution, in a strong material.  Remember, these are holding your engine on :-)
 
Cheers,
Rusty (off to work)
  
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