The 1200 cc 40 hp crank has a slightly different ID on the end of the crank. So the shims for this crank has a different ID than for the 69 mm stoke crank.Nope.
When I built VWs for pay I had a shop in Denver that did my rods in bulk. They matched the sets for me. Since then I farm out this kind of work to a local shop that specializes in balancing.
When I needed to DIY I cobbled something together using my chemistry lab equipment.
It has been a few years and my memory isn't 100% today but I seem to remember that the older gasket style flywheel/crank used larger ID shims and I had a selection of both sizes on the pegboard at the rebuild station?
It over-sped in a shallow dive with a 30" pitch propeller (3400 rpm). Red line in the UK for the VW is 3300, although some racing types exceed this. Initial tests were performed with a fine prop and in a TV dive at 125 mph IAS the tips reached Mach 1. The noise was shattering at nearly a mile distant! :0) The present airscrew was modified with some under camber and maintains 3000. The Aerovee -powered Z-21 operated by Hercules Propellers turns a 65" dia x 32" pitch prop @ 3000 throughout continuous aerobatic routines with a full throttle setting. I intend to replace my propeller in due course with a Herk prop.but I am fairly happy with this one - although it's been cropped slightly after an altercation with a charging deer on take-off a few years ago, which forced me to enter standing crop.I believe if you went to less pitch you will get more climb with the same top speed.
Pops, how big is the woods buggy engine going to be?Worked on the VW engine for the mud buggy today. Pressed the cam gear on the crank and now about ready to close the case. This engine also has the Bob Hoover HVX oil mods. Also will be using single port heads for slower off road use.
Pressed on?Pressed the cam gear on the crank
I have a stock set of 85.5's but think I'll buy a set of bolt on 87's. Don't need a lot of power, just running the back logging roads and trails. Also have a 40 hp , 1200 cc, I might put in if I want to get some high mileage. Will not be much running in 4 th gear. My aluminum fuel tank holds 13.5 gal.Pops, how big is the woods buggy engine going to be?
Jake raby used to sell single port big vw’s for busses back in the day, he posted a good combo a while back. I bwlieve it was a 2100 cc engine
Another way to do it, for those of us without lathes. Sketch courtesy of R.S. Hoover, who was a friend of mine.Opening the middle bore of the shims would be super simple in a lathe with a tool to hold them. Just do a big stack of them all at once held in an OD fixture that clamps them in place
Pops, Thanks for your videos, they are informative. However, I would like to make a suggestion: locate the camera where we can get a closer view of your matter subjects. I believe a closer view of your home made tools and other engine mods would be easier to understand if we could get a better view. Thanks.Another short video.
To find the simple formula for working out the length of the torque extender for the length of your torque wrench go to utube and type in a search of " torque wrench extender bar". Several videos on the subject.
I agree, after watching the video. I do no editing, so I should have redone it with the camera closer.Pops, Thanks for your videos, they are informative. However, I would like to make a suggestion: locate the camera where we can get a closer view of your matter subjects. I believe a closer view of your home made tools and other engine mods would be easier to understand if we could get a better view. Thanks.
If it's a flywheel drive , you use the large Gland nut that holds the flywheel on. If you are using a prop hub on the pulley end and large bolt comes with the prop hub that GP's sells with either the Shrunk on or the tapered hub.Pop's, what nut are you using to hold the "prop hub" onto the crankshaft? Is it the gland nut that would be there anyway for a car, or something else?