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Old February 24th 2016, 02:06
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owdlvr owdlvr is offline
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Join Date: Sep 2008
Location: Canada - West Coast
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So, completed the machine work on my Version 1 adapter piece. Actually finished that up back in January but got swamped with other projects.






…and it was at this point that I realized I’ve screwed up. Somewhere in my initial calculations I carried a one, or something equally silly. Bottom line, there is definitely no where near the space I need to make all this work. The yellow line you can see on the splines is roughly where the face of the bearing is. If you look inside the bearing, you might be able to see the pink dot (or the yellow one close by)…yeah, that’s where the pressure plate spring fingers are with the motor installed. OOPS! I’m roughly 0.585” out. That’s 14.7mm for us metric folk, that is a smoking huge error. I went back and dug up my rough notes, and some how had figured I’d be 0.120” (3mm) short of the space I needed, and figured I could make that up with Rev2 of my aluminum mount. But 0.685…yeah, that’s not gonna happen.

So, back to the drawing board…or Google. First stop, Windrush Evolutions aka WEVO. They make the Porsche 901 hydraulic adapter in gold that pictured in my last post. I believe, from internet searching, that it was originally a Tilton product but ended up under WEVO license/control. Regardless, the WEVO unit is part of their full kit that uses a Tilton multi-plate clutch and custom flywheel. The kit is over $3k USD, and since it’s setup for a Porsche motor not an option. They’ll sell me a hydraulic throwout bearing, but the cost is more than I’ve spent on some vehicles…Porsche tax!

While I waited for the my solutions to ship (which you’ll read about soon), I hammered along on a number of items the car needed. After four years of running, I seemed to have added quite a bit to the electrical system. Heated seats, oil-cooler sprayer, GPS, Phone connections, second intercom system, interior map lighting (red), interior lighting (white), GPS speedometer & antenna, the list goes on. Problem is, each install was done right before an event with the intention of “cleaning it up later”. Basically, zip-tied on top in a hurry. I had a new electrical system to add, and I’ve reached my limit. It was all torn out, and put in cleanly and properly…


The newest electrical system is a dash cam setup with front and rear cameras. I don’t live in an area where fraudulent insurance claims (Russian style) is a huge concern, but I’ve always thought I need one. You see, if I ever DO have an accident…who is going to believe me that I was driving responsibly? Thus, dash cam system. Picked up a used Blackvue 5500 system and did a permanent install. All the wires are tucked away and hidden.


I’ve run out of room for switches on the dash, so the oil-cooler sprayer and interior lighting switch is on the mount for the driver’s seat. Passenger seat has switches in the same location for the red and white reading lamps. The oil cooler sprayer runs automatically with the fan, but I can switch just the liquid sprayer on and off using this switch.


I also tore out the rear shocks and kafer bar, rebuilding as required. Oddly enough, the left spring and right spring were different heights when I pulled them out. So, swapped those out with a fresh pair. One of the Kafer bar ears had cracks in it, so I've started the job of actually rebuilding them all into double-shear mounts. May not be easy to do for each of the mounts, but a good project for later on in the Spring...

And with that, it was back onto the Clutch project. Stop number two on the world-wide-web was much more successful. Kennedy Engineering has a dual-plate clutch system for high-torque applications. Here’s the trick, though: they stuff two clutch plates, and an intermediate plate all into a package that is no deeper than a stock beetle clutch system. Hmmm, that got me thinking. If they’ve squeezed those plates into the same package, the pressure plate must be thinner? A couple of phone calls later, and we worked out that they have a custom pressure plate which is 0.230” thinner than a factory clutch. Kennedy was able to make me one to match the Stage-1 pressure plate I have. So, I’ll use the pressure plate with a single clutch disc by sinking the pressure plate mounting surface 0.230” into the flywheel.


Partway there!

The internet is an awesome, awesome machine sometimes. While looking up the Kennedy double-plate clutch system, trying to work out what the trick was (before I could call them), I found out the current system is actually their Generation 2 system. Get 1 used a standard pressure plate, and a 0.500” spacer between the engine and transmission. Hmmmm…a spacer eh? I knew I didn’t want to go with a full half inch, but I also wanted the proper lip to be machined on either side of the spacer if I’m going to use one. Worked it out with Kennedy Engineering that spacer could be made 0.375”, but probably no thinner. So, I ordered a custom spacer to be made up:


So…
0.120 - Rev 2 of my spacer
0.375 - Spacer
0.230 - Pressure plate
———
0.725” -> More than enough space. You know, presuming my math is correct this time. :P

For the moment, however, I think I need to shelve the Hydraulic clutch system. My first event for Classic Car Adventures is the end of April (Hagerty Spring Thaw), followed three weeks later by the Colorado event (Hagerty Silver Summit). I have a lot of work to do before them, with route books and other details! Warwick’s Escort Rally Car is project #1, he’s hoping to race it in early April…and as you can see I have a lot of work to do. I’m concerned I won’t have enough time to setup the pedal side of the equation, test it all, and swap back if it’s not working correctly.


Having said that…I can’t stop thinking how quickly I could get the engine and and out to see if there is space. Plus these puppies just arrived. More modifications to be done!


-Dave
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'71 Type 1 - Rally Project
'58 Type 1 - I bought an early!?!
'73 Type 1 - Proper Germanlook project
'68 Type 1 - Interm German 'look' project
'75 Type 1 - Family Heirloom
'93 Chevy 3500 pickup - Cummins Swap
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