stunthanger.com

Engine basics => Engine set up tips => Topic started by: Bob Reeves on September 11, 2009, 10:18:59 AM

Title: Combat flyers ST G21-35?
Post by: Bob Reeves on September 11, 2009, 10:18:59 AM

Was looking through my ST's and discovered a G21-35 MK-2 Perry port that had obviously been reworked. The entire insides have been polished including the rod, case, crank and back plate. Also the crank has been opened up a little. Pretty obvious it has had quite a bit of run time as the compression was low. Just happened to have a like new Perry Port P&L I dropped in it. Comparing the old and new liners it looks like nothing was done to the liner timing.

Plan on selling it, probably eBay as I have no idea what it's worth. The question is does the polishing job give any clues of who might have done the rework on this engine? No marks or initials on the case.

Title: Re: Combat flyers ST G21-35?
Post by: Clayton Smith on September 11, 2009, 01:19:21 PM

Polishing and grindng were commonplace as combat flyers searched for ways of matching the performance of the newer Fox Mark III and Mark IV.  Doubtful benefit.  A stock one might be worth collector attention.  Modified really not worth anything.