As a former Spyder owner and engine master mechanic, I would ditch the mechanical pump for an electrical after my first build seized from fuel leakage. Converting my Corvair engine builds to electric pumps was far superior as the failure rate of these OEM diaphragm units were notoriously too risky especially if tracking it.... BTW this little pump is modeled after a human heart...
I've had two e-pump failures in 5 years so not much better than aftermarket mechanical versions in my experience. It's the owner's choice what to choose. I currently have two Vairs with e-pumps and 5 with mechanical. As they say, your mileage vary. :)
@@TheEDNC In my experience, few pumps fail that way. I've owned and driven Corvairs since 1977. I've never had a pump leak into the crankcase so that is not something I worry about much. I do show how to modify the factory drain path for those who live in fear of rare failures like that.
They are better than a few years back but it's still a gamble some days. I would be sure to order from a place that will honor the warranty like a national chain store Clark's Corvair.
But DON'T order thermostats at the local auto parts store, ALL of them!! There is A CONSPIRACY AMONG ALL of TODAY'S AUTO PARTS STORES, concerning CORVAIRS. THEY HAVE ALL MAGICALLY DECIDED THAT CORVAIRS ARE WATER COOLED and USE ANTIFREEZE!!!!!!!! ALL STORES ARE SELLING WATER COOLED ENGINE TYPES THERMOSTATS, SPECIFICALLY for CORVAIRS!! "This will fit your Corvair", THEY ALL SAY!!!!!!! EVEN IN 1970, Corvairs DID NOT use 180°/192° water thermostats!!! WHAT THE HECK HAPPENED??????
@@slickraft I saw that was a problem as well, so I bought multiples from various sources. We'll see how it goes. The big plus for me is not having to worry about gas diluting my oil and ruining my engine.
Hey...just asking (also) about the spacer and adjusting screw set you may have for sale....and what size drill should i use to make the extra drain hole? Thanks
In theory that would work if the rubber diaphragm material was also identical to the original material. If the rubber is harder or softer than the original then the pressure will be higher or lower than intended.
