A Mazda Engine into a VW Beetle story, or
Memoirs of an Old Fart
(sorry, no photos)
| The
Concept
In those days I wasn't into
taking pictures, so you will just have to use your
imagination, much like I'm doing right now. The photo to the
right was not my car, it's just a reasonable facsimile,
something to get you in the zone!
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It was 1986, I was working at a
Volkswagen dealer in the lower mainland of BC. I came across a good
deal on a 1973 Super Beetle. It just needed a bit of ignition
tweaking to get it running well, so I drove it for a while until I
got to thinking about my old Mazda rotary days. I got to thinking
about what it would take to get one of them rotary engines into the
back of my Beetle. A day with a tape measure confirmed it was
possible.
A Super Beetle was chosen for
several very important reasons. I choose a 1973 Super Beetle for the
new style dash and curved windshield. Yes, a standard or custom Beetle
would have been lighter, but I first wanted fully independent rear
suspension, not a swing axle. Not only does the fully independent
suspension handle better, it is a stronger transaxle design without
the weakness of the swing axle pushing and pulling on the side
cover. Second, a radiator sits better in the spare tire well than
behind the axle beam of the standard Beetle. Also the dash of the
standard Beetle is exposed to the trunk of which now air will be
flowing through. The dash on a standard Beetle is drafty enough as
it is! Also the fuel tank is still mounted in the trunk, ahead of
the drafty dash in the standard Beetle, I never did like thinking
about the gasoline intruding through the dash in a bad accident! The
Super Beetle will also take the disk brakes of the Type-4 with a
little work.
I have good connections with VW
sources and Mazda sources, a friend who is a machinist, another who
is an engineer. So armed with these resources I began. I found an
RX4 that hadn't run in years for $200, towed it home, and tried to
get the engine running. First off it was seized. Out came the
sparkplugs, about a 1/2 can of WD-40 down the carb, let it sit for a
day, and tried to turn it over. No luck. OK, let's get a tow rope
and drag it down the road in gear! After about 20 feet of rubber in
3rd gear it broke loose and spun over, spewing oil all over the
engine compartment. A few trips back and forth and it would spin
over with the starter. Now we are getting somewhere. I put the plugs
back in and put a bit of gas down the carb and turned the key. It
cranked and cranked but I couldn't quite spin it fast enough to
fire. Back to the tow rope!
Well I got it going after about
1/2 a block. It smoked so bad I thought the fire department would
show up! It took nearly 30 minutes before it would rev without
blowing blue smoke. The next day I fired it up with the starter with
no trouble, a bit of blue when it first started, but after that it
was fine. At this point I was fairly sure the engine would be OK so
out it came.
Next
Talk
Rotary Beetle on my forum
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