[FC] compression check

[Tom St.Amand]

When testing I wait for five pushes of air, I would guess I got two thirds of the PSI on the first stroke and it was pretty much maxed out after three pumps.  The block is a 95 horse FC motor, I just checked and the right head came off a 62 80 horse motor and I could not coax the shroud off the bell housing to read the other side but at this point it is just a mutt motor so I gave up knowing if I got it off it would be just as hard to get back on.  I suppose I could have carbon build up on one side or the original head if those numbers seem high.
The points were good and I timed it by hand turning it over while watching a plug attached to the number 1 wire and the spark looked hot.
Thanks,
Tom
  ----- Original Message ----- 
  From: BobHelt at aol.com<mailto:BobHelt at aol.com> 
  To: corvanatics at corvair.org<mailto:corvanatics at corvair.org> 
  Cc: lumppytom at hotmail.com<mailto:lumppytom at hotmail.com> 
  Sent: Monday, September 26, 2005 10:42 PM
  Subject: Re: [FC] compression check


  In a message dated 9/26/05 10:14:59 PM US Mountain Standard Time, 
  lumppytom at hotmail.com<mailto:lumppytom at hotmail.com> writes:

  > I used a Proto hand held compression gauge to check and did each hole at 
  > least twice with the same readings and the carbs were off when I ran the check. 
  > I got about a teaspoon of oil ( 3 squirts ) in each cylinder to do the ring 
  > check.
  > As a side note I have good spark and have static timed it but no luck 
  > getting it fire up There is gas to the carbs but no luck.  my next test is to take 
  > a known good set of carbs and swap them.
  > 

  A couple of things.......
  When taking a compression reading, you can feel and see the actual 
  compression strokes. So how many compression strokes are you registering?  What reading 
  did you get on the FIRST compression stroke for each cyl?

  Check that your points are in good shape. The contacts tend to corrode and 
  develop a high resistance.

  Before you change carbs, drop a couple of teaspoons of gas down each carb and 
  see if it fires on that amount of gas.
  Regards,
  Bob Helt
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