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RE: proper engine break-in (kinda ot)

To: "Gary Boone" <gaboone70@earthlink.net>,
Subject: RE: proper engine break-in (kinda ot)
From: "Philip Erickson" <perickson@quorex.com>
Date: Wed, 17 Sep 2003 12:20:37 -0700
Childs & Albert were the rings of choice when I was building FV engines.  Dykes 
top ring and gapless second ring,  sometimes we used DEVES oil rings, others we 
used cast iron oil rings, but that was 20 years ago and the piston to wall 
clearance was sometimes as large as .008.  I think TRW made a Z ring that was 
gapless also.
Phil

-----Original Message-----
From: Gary Boone [mailto:gaboone70@earthlink.net]
Sent: Wednesday, September 17, 2003 10:37 AM
To: datsun parts.com; datsun parts.com; Philip Erickson; Roadster List
(E-mail)
Cc: Ken Ogi (E-mail)
Subject: Re: proper engine break-in (kinda ot)


The last 2 U20's I built (one is currently in my '70), I installed Total Seal 
gapless rings.  0% leakdown because the top ring has no open gap at all.  
http://www.totalseal.com/gaplesss.html
I had to special order them because they are not set up for the R16 or U20.  If 
anyone wants the # off the box, it might work to order them.  Otherwise you'll 
have to provide ring groove dimensions and cylinder bore and they tool up to 
make them special.  Mine are for 0.020 (.5 mm) oversize pistons.  I think they 
make rings sets now where both the top and 2nd ring are gapless.
Gary


-----Original Message-----
From: "datsun parts.com" <datsunpartsdotcom@yahoo.com>
Sent: Sep 17, 2003 10:57 AM
To: "datsun parts.com" <datsunpartsdotcom@yahoo.com>, 
        Philip Erickson <perickson@quorex.com>, 
        "Roadster List (E-mail)" <datsun-roadsters@autox.team.net>
Cc: "Ken Ogi (E-mail)" <ken@norstargroup.com>
Subject: Re: proper engine break-in (kinda ot)

"datsun parts.com" <datsunpartsdotcom@yahoo.com> wrote:Temperature is 
important. Cool nights driving local runs to the video store etc. I did one 
motor with Sealed power rings. I like these rings the best.You know the rings 
are pretty good when you do a leak down test cold and get 6% in each bore. I 
have used the same machine shop and same pistons and same break in with 
Hastings, Deves and Sealed Power rings as the variables and come up with very 
different results. Dean

Philip Erickson <perickson@quorex.com> wrote: I have always been of the opinion 
"run it they way you want it to run". Just
watch the TEMPERATURE. Maybe that is why I didn't have any trouble with using
DEVES rings. I have also heard that if you break an engine in without going
to high RPM the top ring will get damaged when you stretch the rods ;-) oops

Philip Erickson





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