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<DIV><FONT size=2 face=Arial>In regard to TR-3 & 4 lifters and cams. It is
true that the original cam lobes were flat and not taperred. I do not believe
that the original lifters were flat. I had purchased OE> lifters from
the TR dealer, Kramer Motors in Santa Monica back in 1966 when I put my first
Kastner "D" cam in my Morgan. I am quite certian that the new lifters that I
bought had a "crown" to their base. </FONT></DIV>
<DIV><FONT size=2 face=Arial> We have found over
the years, almost every single wet sleeve engine which we torn down had at least
2, sometimes 3 lifters that were not rotating. Usually these lifters were near
the rear of the block. The wear pattern they wouldl develop looked like a
butterfly on the bottom of the lifter. They had been occilating, not
rotating!</FONT></DIV>
<DIV><FONT size=2 face=Arial> We did some research
with the cam grinder that we have been working with for over 35 years now, and
have concluded that if the cam lobes are reground with a taper, & the
lifters are ground with a matching taper, then the lifters will rotate reliably
and cam and lifter life will be dramatically exteneded. This of course assumes
that the lifters are at least Rc 55 or so as were the originals.
</FONT></DIV>
<DIV><FONT size=2 face=Arial> Thecam lobes are
tapered in pairs, each pair tapered toward each other so as to match the offset
of the lifter bores from the cam lobes. </FONT></DIV>
<DIV><FONT size=2 face=Arial>This requires grinding the cam lobes in two
different set ups with the grinding wheel of the cam grinder set to taper 4
lobes in one direction and 4 lobes in the other direction. Thus the thrust
developed by the cam/lifter offset is equel and the only fore and aft load on
the cam is from the oil pump drive gear. . </FONT></DIV>
<DIV><FONT size=2 face=Arial> All of the
cams that we have had reground in the last 30 years have all had tapered lobes.
</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2
face=Arial>
Greg Solow</FONT></DIV>
<DIV><FONT size=2 face=Arial>
The Engine Room</FONT></DIV>
<DIV> </DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=fot@autox.team.net href="mailto:fot@autox.team.net">Jerry Van Vlack
via Fot</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=ofracer@gmail.com
href="mailto:ofracer@gmail.com">Mike Harmuth</A> ; <A title=fot@autox.team.net
href="mailto:fot@autox.team.net">FoTTriumph</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, November 17, 2017 4:49
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [Fot] Peugeot lifters
504</DIV>
<DIV><BR></DIV>
<DIV dir=ltr>
<DIV style="FONT-FAMILY: 'Arial'; COLOR: #000000; FONT-SIZE: 12pt">
<DIV>The discussion on lifters is of interest to me. I’d like to see some
independent verification of the recent statement regarding lifter bore
being at some angle relative to the cam bore. </DIV>
<DIV> </DIV>
<DIV>What I believe is the bores are perpendicular to the cam bore but offset
from lobe centerline to facilitate lifter rotation. I recently did some
research on cams and lifters for the wet sleeve engines and have concluded
that factory stock cams and lifters are ground flat and lifter bores are
offset to facilitate lifter rotation. My bases for the conclusion is via
verification at a cam grinder that the stock lobes (and my Kastner D cam) are
ground flat by installing several OE cams between centers in the cam grinders
equipment and sweeping a dial indicator across the lobes and the heals which
verified dead flat grind. </DIV>
<DIV> </DIV>
<DIV>With regard to lifters I took several used but known to be OE lifters
that were in good shape and placed them end to end, there was no rocking and
they mated as though they were lapped together. I did the same with new
lifters from a well know supplier and placed them end to end and they rocked
showing a slight radius. These radiused lifters combined with a flat cam are
not matched for lifter rotation and can lead to rapid cam and lifter wear. If
using a cam that has a taper ground lobe with the radiused lifters you will
get rotation. </DIV>
<DIV> </DIV>
<DIV>I have no idea what effect on wear an offset lifter bore has with a
tapered lobe cam and radiused lifter. Maybe someone else can comment on
that.</DIV>
<DIV> </DIV>
<DIV>Perhaps this is old news to many racers but I suspect that some engines
have been built with mismatched cams and lifters that led to rapid cam and
lifter wear which was wrongly blamed on oil and break-in procedures.</DIV>
<DIV> </DIV>
<DIV>JVV</DIV>
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<DIV> </DIV>
<DIV style="BACKGROUND: #f5f5f5">
<DIV style="font-color: black"><B>From:</B> <A title=fot@autox.team.net>Mike
Harmuth via Fot</A> </DIV>
<DIV><B>Sent:</B> Thursday, November 16, 2017 8:47 AM</DIV>
<DIV><B>To:</B> <A title=fot@autox.team.net>FoTTriumph</A> </DIV>
<DIV><B>Subject:</B> Re: [Fot] Peugot lifters 504</DIV></DIV></DIV>
<DIV> </DIV></DIV>
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<DIV>
<DIV>
<DIV>"And they've been used in at least one 1296 Spitfire engine, where
they're much larger in diameter than stock."<BR><BR></DIV>Now you have my
interest, I have a small block 1296 block with worn lifter bores and my engine
builder couldn't find a slightly larger lifter. I'm guessing he didn't look at
a Peugeot parts catalog. Does anyone have a lifter part number or a spec so I
can investigate bringing this block back from the dead? It was mentioned that
the TR bores holes are not parallel to the block, are the small journal 1296
bore the same?<BR><BR></DIV>thanks<BR></DIV>mike h<BR></DIV>
<DIV class=gmail_extra>
<DIV> </DIV>
<DIV class=gmail_quote>
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