Count the teeth. If there are 130, it's a "12V" flywheel (and yes there were 40 SAE HP 1200cc engines made with them, just none sold in the US - or someone could've fit one to it) and you'll need to clearance the bellhousing. If there are 109 teeth it's a 6V flywheel and should fit with no modification. THE SIZE OF THE CLUTCH DOES NOT DETERMINE THE OUTSIDE DIAMETER OF THE FLYWHEEL. VW produced both 6V and 12V flywheels with both clutch sizes. Be sure the clutch cover is the type with a center ring, too. To use a 130-tooth flywheel you'll also need a 12V starter. A "normal" one from a 4-speed car will work IF you install a special thick-walled adapter bushing (the 12V starter's pinion shaft is smaller than the 6V's). Or, find a starter from an AutoStick or full-automatic that's self-supporting and doesn't require any bushing - they're called "SR17" (SR17X for rebuilt). One last issue - if you still have the original `56 factory rear transmission mounts (or identical replacements) their studs are slightly longer than those of the later mounts and will need to be shortened by about 1½ threads for the 130-tooth flywheel to clear them.
--- "S. Truong" <[EMAIL PROTECTED]> wrote: > * Bill May <[EMAIL PROTECTED]> [07/05/07 01:04:41 PM > -0700]: > > > a 40 hp would have the 6 volt flywheel. no > grinding needed unless you have a > > 12 volt flywheel on your 40 hp. > > I might be misled about the hp output because I > bought the motor a long > time ago. The motor definitely has a bigger > flywheel. It also has a 12v > regulator and came delivered with a 12v starter. > > The tip from Eric about using a rasp on a hand drill > sounds like a good > plan to me. Thanks for the responses, everyone. > > Regards, > Sammy > > > > ----- Original Message ----- > > From: "S. Truong" <[EMAIL PROTECTED]> > > To: <[email protected]> > > Sent: Thursday, July 05, 2007 11:04 AM > > Subject: [vintagvw] 6v/12v conversion question > > > > > > > Hello, > > > > > > So the time has come to install my ebay'd 40 > horser in > > > my '56 beetle and I realized I hadn't dealt with > the bell > > > housing situation. > > > > > > Is it still suggested to just grind that thing > out to get > > > the flywheel to fit? I heard a fun rumor about > firing up > > > the motor and actually using the flywheel's > teeth to > > > cut the material out; sounds... exciting! Do > other less > > > adventurous people just use an angle grinder and > go to > > > town? What's a good way to determine how much > material > > > to remove? (Does this area include the tranny > mount > > > bolts?) ____________________________________________________________________________________ Be a better Globetrotter. Get better travel answers from someone who knows. Yahoo! Answers - Check it out. http://answers.yahoo.com/dir/?link=list&sid=396545469 _______________________________________________ vintagvw site list [email protected] http://lists.sjsu.edu/mailman/listinfo/vintagvw
