I bent one on Sunday AM at a dead cold start - another Sunday afternoon "playing". I'm going to have to quit hopping it up and start taking care of business elsewhere (making it live). These are original 56 parts in there........Had a box of "Clevite" tubular spares (4) - now down to two. No more "test" runs without a full set of tubular pushrods. The new spark curve (changed springs) and carb have ended up with a rate of engine acceleration these parts cannot live with.

Mummert lists them - how about the outfit on e-bay? Anyone tried that source - $50 with shipping? The tubing is so much stronger than the solid bar that weight is more of an issue than anything else. Last fall Charlie had a problem with hardening of a cup I believe but can't remember what brand. The Clevite parts look well made - may not even be available anymore -and were spinning nicely while I ran it with the covers off.

Pulled the fuel filter apart (old post) and had some rust in it - not too bad - but also a helping of sand (?) - funny what 50 years of fillups will put in your tank. Disconnected (no back pressure) fuel pump flow looks OK - but without a regulator for loading it - no telling what the real capacity might be.   

The new 525 Demon Jr. doesn't drain the primary bowl (and flat spot) quite like the Holley 4160 - more bowl capacity I think, even with this side-hung float version. The throttle return spring in the carb is much stiffer than the original or Holley either one - so the kickdown linkage is screwed up big time. I finally resorted to the old "heavy washer and bolt" through the linkage arrangement to get on with tuning. This throttle thing will have to be re-invented I'm sure - Frakes send me an e-mail.....please.

The Demon 525 is congfigured with a bit bigger accelerator pump orfices and the engine definitely likes that better - must have been starving it a bit before. The secondary barrels are 1-11/16 - a full 1/8 bigger than the Holley 600 cfm I was working with - but they have stuffed the secondary with some very restrictive (flowwise) downleg boosters that really must tone down the total flow.

 
 Steve Metzger       Tucson, Arizona