Author Topic: Wtd: '69-'71 Poptop Westy  (Read 709 times)

Offline RevBug

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Re: Wtd: '69-'71 Poptop Westy
« Reply #15 on: April 22, 2016, 07:37:27 AM »
Bummer. Hope comes back together soon.

Offline Mark Evans

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Re: Wtd: '69-'71 Poptop Westy
« Reply #16 on: April 29, 2016, 06:14:33 AM »
Case, crank, flywheel are toast. Since I needed a new case, Mark said they come pre machined so, 74x92 with Engle 110, lightened flywheel, H rods. Should be a little better on the hills!
« Last Edit: April 30, 2016, 05:09:26 AM by Mark Evans »
  • '55 ragtop, '63 ragtop, '69 beetle, '68 Riviera bus

Offline B. Fye

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Re: Wtd: '69-'71 Poptop Westy
« Reply #17 on: April 29, 2016, 09:32:52 AM »
I would suggest bigger than the 74 in a bus.  While my 1904cc went up hills nicely in a squareback, it was much less to push than a westy.  82x90.5 would give you the grunt to climb!
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Offline Mark Evans

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Re: Wtd: '69-'71 Poptop Westy
« Reply #18 on: April 29, 2016, 03:53:00 PM »
With a 74 crank, assembly will be a bit easier as far as clearances to deal with. As it is, I plan to still use the dual Solex 32/34 carbs but will rejet them. After all, it is still a bus, and isn't going to pull hills like it would with a Subi conversion!
  • '55 ragtop, '63 ragtop, '69 beetle, '68 Riviera bus

Offline Mark Evans

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Re: Wtd: '69-'71 Poptop Westy
« Reply #19 on: September 22, 2016, 06:17:28 AM »
I received my new set of reworked "KaddieShack" Kadron carbs. Gonna try these, rejetted/rebushed and wow do they look great! Just hope they perform as well. Just wanted Kadrons for ease of tuning. Also got new Scat linkage and larger venturis and also ported for vacuum lines so I can run a dual advance dizzy (when I get one). I also had the air cleaner mounts reworked, you can see the difference in the pics. He claims a 6-8 hp dyno increase just by this modification. Yes, I am going to add spring tabs for the way he ran the upper part of the spring. I may just run the 1 larger spring on the linkage.
« Last Edit: September 22, 2016, 06:19:15 AM by Mark Evans »
  • '55 ragtop, '63 ragtop, '69 beetle, '68 Riviera bus

Offline Otto

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Re: Wtd: '69-'71 Poptop Westy
« Reply #20 on: September 22, 2016, 12:49:02 PM »
Mark, do you have any pictures of your gas heater?
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Offline Mark Evans

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Re: Wtd: '69-'71 Poptop Westy
« Reply #21 on: September 23, 2016, 06:04:39 AM »
Would be hard to get a shot of it. It has the complete belly pan underneath. I was told it's a late bay or Vanagon heater.
  • '55 ragtop, '63 ragtop, '69 beetle, '68 Riviera bus

Offline sideshow

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Re: Wtd: '69-'71 Poptop Westy
« Reply #22 on: September 26, 2016, 05:22:50 AM »
I would keep the stock venturis/jets handy. My observation is that expert sizing is wrong. Small is always better.
They are pretty thou.
Warning preceding post may contain trace amounts of nut

Offline Mark Evans

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Re: Wtd: '69-'71 Poptop Westy
« Reply #23 on: October 23, 2016, 06:03:57 AM »
I've had a lot of "prep" work to do on this setup. Open up the inner diameter of the manifolds for the 44mm throttle bodies. The bases on the manifolds wouldn't clear the head tins, so I had to grind off over 1/4" at the top and nearly 1/8" at the bottoms. The center post stand that bolts on the case was too long at the bottom, so had to remove nearly 1/8" there. I finished the spring tabs and they feel much smoother than having the spring "pop" off the side of the cam lobe of the throttle shaft. Here's a before and after...
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Offline Mark Evans

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Re: Wtd: '69-'71 Poptop Westy
« Reply #24 on: October 29, 2016, 06:07:21 AM »
What I hope is the last fabrication for this install was the center mount support bracket. The top would not clear the linkage arm. I saw many others having to do this in Samba forum posts. Hopefully, now I have only fuel and vacuum lines to route.
  • '55 ragtop, '63 ragtop, '69 beetle, '68 Riviera bus

Offline Mark Evans

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Re: Wtd: '69-'71 Poptop Westy
« Reply #25 on: December 10, 2016, 05:19:20 AM »
As I finish things up on the bus, I went ahead and bought all new ignition components. Along with that, I have the gauge package I need to install. Cyl head temp, oil pressure, oil temp, and voltage. Also managed to finally get a Westy jumpseat!
  • '55 ragtop, '63 ragtop, '69 beetle, '68 Riviera bus

Offline notched

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Re: Wtd: '69-'71 Poptop Westy
« Reply #26 on: December 19, 2016, 02:01:57 PM »
Fancy!
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Offline Mark Evans

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Re: Wtd: '69-'71 Poptop Westy
« Reply #27 on: May 14, 2017, 04:31:11 AM »
I've been battling an ignition problem for months on the bus. After installing the new carbs, I couldn't get it to run. It would fire, but not keep running. I hooked up a remote starter switch so I could monkey with things while trying to start it. It turns out, the ignition switch will make contact while trying to start it, but when you release it after firing, it would die. So, with the key on and actually making contact, this thing fired up! Come to find out, this is a somewhat difficult replacement part to find (in good quality) that doesn't start a fire!
  • '55 ragtop, '63 ragtop, '69 beetle, '68 Riviera bus

Offline enzo

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Re: Wtd: '69-'71 Poptop Westy
« Reply #28 on: May 14, 2017, 05:27:54 PM »
Isn't that a difficult switch to replace?  How are the quality of the switches Wolfsburg West sells?

Offline Mark Evans

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Re: Wtd: '69-'71 Poptop Westy
« Reply #29 on: May 16, 2017, 04:48:20 AM »
It will require taking apart the column a bit. From what I've read, it shouldn't be too bad. The lock will stay in place, just the contact part  to be changed. Apparently, there are a few aftermarket switches known to cause fires so I need to find a "good" one.
  • '55 ragtop, '63 ragtop, '69 beetle, '68 Riviera bus