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Re: HIF4 questions

To: "mghirsch" <>, <>
Subject: Re: HIF4 questions
From: "Bill Schooler" <>
Date: Sat, 27 Oct 2001 17:00:35 -0400

Could you give an explanation of the relationship of piston height to rpm?
I suspect that a "hanging piston" would tend to cause an otherwise
well-tuned engine to run rough and stall.  And who ever told you to use
emery cloth on the piston/suction chamber?  From what I've read in the
various workshop and SU manuals, this is considered to be a real "no-no".


----- Original Message -----
From: "mghirsch" <>
To: <>
Sent: Friday, October 26, 2001 3:06 PM
Subject: Re: HIF4 questions

> One reason for the increased rpm when it is hot could be that a piston is
> hanging up and not going all the way down.  Pull the dashposts, check the
> piston and the inside of the dashpot for foreign materials, and
> If there is scoring, you may want to use emery cloth.
> Maynard HIrsch

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