Subject: Rotary Reliability (Corner Seal Inserts)
From: ACRE NL
Date: 11/22/2002, 10:43 AM


Paul wrote:
I assume you mean the little cylindrical pieces with a slot
in them for the apex seal ends. I was unaware that they had
rubber in them. Must be a third gen feature. Here is an illustration
out of the third gen shop manual.

If so you should try a set made from solid teflon Brian.
I suspect you would not be able to notice any reduction
in HP due to increased (if any) leakage. It is probably
mostly a smog thing at idle.

Paul Lamar

Huuummm-
I have taken apart and rebuilt a few engines and those 'plastic' inserts
were always there in the high mileage rotaries I did (almost all in one
piece). They were kind of stiff compared to new ones (always replace
that insert). AND use the FD flat springs under them instead of the wire
spring if doing engines before the FD version.
[Marc Wiese]

Mark Wrathall wrote:
Sorry, this is an old mail, but I just catching up from a business trip.

Marc, what were the reasons behind these statements? "They were kind of
stiff compared to few ones (always replace that insert). AND use the FD flat
springs under them instead of the wire spring if doing engines before the FD
version."

Sounds like the sort of thing I should capture on the rotary best practises
site. Could you write your recommendation and the reason for it and email it
to me wrathall@aon.at or just post it on this newsletter. Thanks.

Mark Wrathall
www.rotary.microcosman.com

 
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