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Topic: New Clutch - 67 Split window bus  (Read 4850 times)

Offline vwherb

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New Clutch - 67 Split window bus

« on: June 27, 2004, 10:05:17 PM »
Ritchie came up to the house this morning and helped me finish pulling the engine out of my 67 Bus. I had to pull the engine for a clutch and presure plate replacement.

Once on the ground, I found out my biggest problem was the size of the old assembly. Lucille had a 180mm clutch, presure plate and flywheel bolted up to a 1600 dual port engine. Unless I'm way off in left field (Zen told me I wasn't) that engine should have the 200mm clutch assembly and flywheel. The teeth were badly worn on the flywheel and that explains why she always sounded wierd when I cranked her. I have had to adjust the clutch 4 or 5 times in the 5 years I've owned her and now I pretty much know why. The 180mm assembly just wasn't large enough to pull her around.

If you're haveing any clutch problems with anything that seems abnormal, pull your engine and find out what the problem is.  :(

Offline Ret.Bugtech

New Clutch - 67 Split window bus

« Reply #1 on: June 28, 2004, 08:51:06 AM »
Yes indeed,  200mm is correct. Sounds like you had a 109 tooth flywheel (6volt) and a 12V starter motor or a 6V starter motor cranking with 12Volts. You had better look at the starter bushing in the tranny real close. There is a flywheel that carried the 180mm clutch but had the "O"ring seal and 120 teeth ??? (I forget) . It came on the 1966 Ghia only. Does your engine have the "long shank" crankshaft that carries the "O" ring type flywheel ? Its suppose to. If it does and you can put a 200mm wheel on , you need to check or adjust your crankshaft endplay. God only know what someone has installed. If by chance you have a "short shank" crank, you can`t install a "O" ring wheel , but alls not lost. Let me know.

Offline Zen

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New Clutch - 67 Split window bus

« Reply #2 on: June 29, 2004, 02:01:20 AM »
Didn't all 69mm stroke cranks use a flywheel with the 0-ring?  I'm not real familiar with 67 and back stuff, but I'm thinking I've seen "6 volt" flywheels that used an O-ring.  When did they add the O-ring?

I bought a 40 horse engine to go in my still 6 volt 63, but couldn't get it in the transaxle.  It turned out to have a "12 volt" flywheel, but with a 180mm clutch and (if I remember correctly) no 0-ring grove.  I've seen and heard all kinds of other "situations" with the flywheels, and the more I learn/see/hear, the more confused I get.

Here's what I "think."  David, please let me know if these are true assumptions.

There are two sizes of clutch disc.  Anything that originally came with a 1300cc or smaller engine used the 180mm disc.  All 15-1600cc engines used the 200mm disc.

Before a certain date, all flywheels sealed to the crankshaft with a paper gasket, after that date they had an o-ring.  I have no idea the date.  There is something different about the crankshaft as well as flywheel (I don't remember exactlly what it is with the crank) so these don't just mix and match.

All VWs with 6 volt electrical systems used a 109 tooth starter ring gear on the flywheel.  All 12 volt VWs used a slightly larger gear with a few more teeth.

If all we ever had to deal with were Beetles made in Germany and bound for the US, it would be cut and dry.  But it's not that easy . . . 12 volts came out as an option on the buses as early '64(?).  The buses got larger engines sooner than the cars.  So did the type 3s.  A 12 Volt 40 horse was an option as late as the mid-80s, maybe even into the 90's on Mexican Beetles.  Overseas, 1300 dual ports were offered . . . who knows what kind of flywheel they had.  Then, there is the issue of industrial engines . . . they were offered in all kinds of sizes and configurations for many, many years.  Somewhere I've seen (In Muir's Idiot Book, I think) a referance to an engine code for a 36 HP industrial engine built in the late 60s or early 70s.

Anyway, it's late.  I gotta get up early.  Now I have a headache 'cause my next to the last working brain cell is going into overload.  I'm going to bed.  Maybe it'll all make sense tomorrow.   ???

Maybe not.   :p  

 :cool:

Offline Ret.Bugtech

New Clutch - 67 Split window bus

« Reply #3 on: June 29, 2004, 09:24:21 AM »
OK Zen , You are starting to mess with my head.
     There is 2 types of 69mm cranks. Long shank and short shank. Shank meaning the distance between the end face of the crank to the main brg. journal.
      Long shank uses "O" ring.  Short shank uses paper/metal shim around the dowel pins. The "End play" shims were different. The I.D. of the long shank end play shims is less than the short shank crank shim. The 1200cc crank can be called a short shank crank. You can use a shim type flywheel on a long shank crank, but you can not use a " O" flywheel on a short shank crank.
       The 1963 type 2 could be had with the 1200 or 1500 early on and later on only the 1500cc engine. The `631/2---`64--65 came with the shim type flywheel ,200mm clutch , but 6 volt. The `66 came with 200mm "O" flywheel.6 volt. `67 200mm 12volt. the rest is history.
       The 1966 Ghia came with 180mm clutch,"O" ring ,12volt pattern ,but was still 6volt .One year only.
       I think the first type2  "O" was in 1967
   Whew!!!!!

Offline Zen

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New Clutch - 67 Split window bus

« Reply #4 on: June 29, 2004, 11:51:42 PM »
OK, let's keep it simple.

Two sizes of gears on the starter. Two sizes of starter ring gears on the flywheel.  They have to match.

Two sizes of Clutch discs. Two sizes of Pressure Plates. They have to match.  They also have to match the size of the flywheel surface (again, two of those).

Two different styles of Crankshaft shanks. Two different styles of flywheel centers.  They have to match.

Two different sizes of starter shafts. Two different starter bushings. Two different size holes for the bushing. Two different voltages for the starter.  All those have to match.  Well, that's if you don't count the 66 Ghia's 12 volt size starter that was 6 volt and if you don't ever run a 6 volt starter with 12 volts (by the way, that works pretty well . . . as long as you don't grind on it for long at a time).

Two different size openings in the transaxle bell housing. Two different starter ring gears on the flywheel.  Those don't have to match, but one combination requires a little clearancing work inside the bellhousing.

There.  It's simple.  Stuff has to match.  It's like a jigsaw puzzle.  If a piece doesn't fit, pick up another piece and try it.  Sooner or later you'll find the pieces that fit together.
 :cool:

Offline Ret.Bugtech

New Clutch - 67 Split window bus

« Reply #5 on: June 30, 2004, 08:42:02 AM »
OK , Simple It is, but its nice to know what fits what and know what it looks like without having to guess or wreck something in the process. Frankly, I don`t like to do these kind jobs but once. I don`t like Abrams Tank style of maintenance where you work on it for 4 days and drive it 1 day and then start over again.
    Zen ,you left out: 2 types of end play shims. There are 3 types of starter bushings.  6-volt, 12-volt and the 6 to 12 transition bushing.

Offline vwherb

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New Clutch - 67 Split window bus

« Reply #6 on: June 30, 2004, 10:44:32 AM »
You guys have succeded in just completely confusing me. I have tried to follow but somehow got lost. I now have a 200mm flywheel with an O ring to go back in Lucille along with a 200mm clutch, presure plate and, I think, the correct throw out bearing. Now I just have to get the flywheel turned as it has some "hard spots" on the face. I'll be locating a machine shop today to take care of that.

                                                                           :cool:

Offline Ret.Bugtech

New Clutch - 67 Split window bus

« Reply #7 on: June 30, 2004, 05:34:55 PM »
Zen, We have totaly "cornfused" the Prez. If we went into the repair business and kept everybody confused,We could make a lot of money.
   Oh ! I just remembered, There is 4 types of starter bushings. I forgot about the little skinny bushing (.008 in.) so you can use a 6 volt starter on a `67 and up tranny. A real b---h to install. :D

Offline Zen

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New Clutch - 67 Split window bus

« Reply #8 on: June 30, 2004, 09:34:32 PM »
And then there is the automatic starter that can be used on a manual when the hole for the bushing is worn out.

I know all of the autostick Beetles were 12 volt . . . but was there an automatic type 3 that was 6 volt?  If so, then there are two automatic starters.

Offline Zen

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New Clutch - 67 Split window bus

« Reply #9 on: June 30, 2004, 09:39:18 PM »
Quote from: "vwherb"
. . . along with a 200mm clutch, presure plate and, I think, the correct throw out bearing.

Oh yeah.  Two types of pressure plates.  Two types of throwout bearings.  They don't mix and match. :laugh:

Offline vwherb

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New Clutch - 67 Split window bus

« Reply #10 on: July 01, 2004, 06:36:17 AM »
You guys are having entirely too much fun with this. :O

Offline Ret.Bugtech

New Clutch - 67 Split window bus

« Reply #11 on: July 01, 2004, 08:24:38 AM »
No 6 volt automatic starter. The type 3 fully auto. and type 1 auto.stick came in to the U.S.A. as 1968 models.
   Oddly enough, there was a auto-stick type1 in 1961 called a
   Saxomat. This transmission operated like the later auto-stick
  with the exception that it had a centrifugal clutch in place of
  the torque converter. I have only seen and driven one of
  these odd balls. They were really awful and they vanished pretty quickly. I don`t recall what style of starter motor it had,so its possible there was a 6volt automatic starter.

Offline Zen

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New Clutch - 67 Split window bus

« Reply #12 on: July 01, 2004, 07:09:11 PM »
Quote from: "vwherb"
You guys are having entirely too much fun with this. :O

You started it!!!   :laugh:

Offline Ret.Bugtech

New Clutch - 67 Split window bus

« Reply #13 on: July 01, 2004, 11:04:09 PM »
Herb, You better be careful what you ask for or be prepared for things like this to happen. I think Zen and I both are having fun with this.  You are welcome to jump in and start a new topic and then Zen and I will surely have some coments.
   I love It !!!!

Offline vwherb

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New Clutch - 67 Split window bus

« Reply #14 on: July 09, 2004, 09:01:41 PM »
Up until now, Lucille's medical team has consisted of LPN's, one RN, a couple of interns but today, her transmission went to the chief surgeon. Dr. David Johnston has Lucille's entire transaxle in his operating room to do a syncronizer transplant and anything else that may need doing. If complications arise, Lucille could possibly have to have an entire transaxle transplant but let's keep our fingers crossed that Dr. Johnston can save and repair her old unit. Lucille is currently on life support but I have all the confidence in the world in her doctor.

Stay tuned for up dates.............maybe even by the doctor himself.   :)

                                                                        :cool:

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