'67 Square continued.....

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937carrera
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Re: '67 Square continued.....

Post by 937carrera » 13th January 2020 - 5:31pm

Hmm, sounds a bit like a FWD car that is on the ramp in full droop with gears engaged. The angle for the CV is excessive and it locks / releases as it rotates. That or the diff locking up / releasing.

Does it bang / make noises when freewheeling ?
David
1974 412LS Variant
1973 412LE 4 door Fastback / Saloon

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sparkywig
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Re: '67 Square continued.....

Post by sparkywig » 13th January 2020 - 8:54pm

Not sure, hasn't been driven enough to find out.
Hopefully it will all be sorted tomorrow.

Update: gearbox has been left for a full strip and rebuild, but no fault has been admitted.

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sparkywig
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Re: '67 Square continued.....

Post by sparkywig » 21st January 2020 - 6:07pm

The transmission is back in the car, just needs to be fitted now.

Image

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937carrera
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Re: '67 Square continued.....

Post by 937carrera » 21st January 2020 - 7:06pm

You had me confused for a moment there, until the picture appeared.

Is there any diagnosis shared ?
David
1974 412LS Variant
1973 412LE 4 door Fastback / Saloon

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sparkywig
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Re: '67 Square continued.....

Post by sparkywig » 21st January 2020 - 7:42pm

Replacement fulcrum plates and side gears apparently.
No fault admitted, but only charged me £40.

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937carrera
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Re: '67 Square continued.....

Post by 937carrera » 21st January 2020 - 9:20pm

I didn't know what they were so had to go searching on Samba. There's a few threads on there - seen this ?

https://www.thesamba.com/vw/forum/viewt ... p?t=576312
David
1974 412LS Variant
1973 412LE 4 door Fastback / Saloon

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sparkywig
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Re: '67 Square continued.....

Post by sparkywig » 21st January 2020 - 9:49pm

Yes, spent a few hours trawling through the Samba looking for similar issues.
I'm not au fait with swing axle transmissions, to be honest they're a pain in the ass. Much prefer IRS where you can remove the gearbox without leaving the vehicle immobile.

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937carrera
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Re: '67 Square continued.....

Post by 937carrera » 21st January 2020 - 11:03pm

My knowledge is pretty poor in that area too.

At the risk of being a numpty...... why is there an "L" for left on the right hand brake disc ?
David
1974 412LS Variant
1973 412LE 4 door Fastback / Saloon

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sparkywig
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Re: '67 Square continued.....

Post by sparkywig » 22nd January 2020 - 9:43am

I presume it was marked by the rebuilder before disassembly.

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937carrera
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Re: '67 Square continued.....

Post by 937carrera » 22nd January 2020 - 10:46pm

So it was worth marking as being from the left but not worth reassembling in that same position.

I'm sure it's fine, just a bit strange and confusing for me
David
1974 412LS Variant
1973 412LE 4 door Fastback / Saloon

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sparkywig
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Re: '67 Square continued.....

Post by sparkywig » 22nd January 2020 - 11:25pm

937carrera wrote:
22nd January 2020 - 10:46pm
So it was worth marking as being from the left but not worth reassembling in that same position.

I'm sure it's fine, just a bit strange and confusing for me
I'm sure it was on his left

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sparkywig
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Re: '67 Square continued.....

Post by sparkywig » 29th January 2020 - 5:06pm

Hopefully this might force a bit more fluid to the rear calipers and get rid of my soft brake pedal.

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muddy
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Re: '67 Square continued.....

Post by muddy » 2nd February 2020 - 7:35pm

If that's a CSP master cylinder I hope you get better joy than I did.

3 master cylinders later, I had to get my money back and fit a porsche 924 master cylinder (Which worked a treat and brakes are awesome).

All the CSP master cylinders that were sent to me weeped out of every orifice. See my build thread. It put me back nearly 8 months.

Hope yours is ok. fingers crossed.
1971 VW Type 3 1600 TE Fastback. Body off Resto completed, now just bits and pieces and niff naff to do.
Volksworld Magazine featured car 2013
Instagram: @type3.fastback

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sparkywig
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Re: '67 Square continued.....

Post by sparkywig » 2nd February 2020 - 7:46pm

Yes, I did read your thread. Was hoping that CSP had sorted the issue by now.
I’ve already got a 944 master cylinder fitted, but can’t get adequate pressure to the rear calipers. The brakes work, but the pedal’s soft.

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muddy
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Re: '67 Square continued.....

Post by muddy » 3rd February 2020 - 9:14pm

Fingers crossed for you :thumbsup:

My pedal is pretty hard and brakes are good. Not had it MOT’d so don’t know what the rear brakes are going to be like, seems fine on the road though. Mines a 944 cylinder not a 924.

I wonder why your 944 cylinder is no good if it’s designed for rear disc brakes?
Last edited by muddy on 3rd February 2020 - 9:19pm, edited 1 time in total.
1971 VW Type 3 1600 TE Fastback. Body off Resto completed, now just bits and pieces and niff naff to do.
Volksworld Magazine featured car 2013
Instagram: @type3.fastback

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sparkywig
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Re: '67 Square continued.....

Post by sparkywig » 3rd February 2020 - 9:19pm

No idea.
The pedal’s soft with the rear discs, but rock hard with rear drums.

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937carrera
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Re: '67 Square continued.....

Post by 937carrera » 3rd February 2020 - 9:52pm

Isn't that to do with the volume of brake fluid being displaced?

More volume in disc calipers so less movement ???
David
1974 412LS Variant
1973 412LE 4 door Fastback / Saloon

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sparkywig
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Re: '67 Square continued.....

Post by sparkywig » 3rd February 2020 - 10:20pm

Yes, I would think so. That's why I'm hoping the larger volume CSP master cylinder will work.
If not, I'll be running a separate solid brake line from the master cylinder to each rear caliper.

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sparkywig
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Re: '67 Square continued.....

Post by sparkywig » 15th February 2020 - 4:31pm

So then here we go again

Image

Off down the M32

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On the ramp

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937carrera wrote:
22nd January 2020 - 10:46pm
So it was worth marking as being from the left but not worth reassembling in that same position.

I'm sure it's fine, just a bit strange and confusing for me
You were right to be concerned @937carrera, note the position of the calipers and carriers in relation to the gearbox in the previous and following pics.

Image

New master cylinder fitted as well, and the brakes are much better, just need the new discs and pads to bed in.
After the test drive

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And back home in the storm under it's own power.
Really need to connect the heat exchanger cables.....

Image

Image

Just one small issue to sort, the brake pedal pushrod needs to be backed off as the brakes were binding, and the higher 4th and final drive really do need a bigger engine. :lol:

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937carrera
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Re: '67 Square continued.....

Post by 937carrera » 15th February 2020 - 9:03pm

Sounds like decent progress :thumbsup:

Do you understand what changes were made and why ??

Time to get some miles on her ?
David
1974 412LS Variant
1973 412LE 4 door Fastback / Saloon

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broady_6
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Re: '67 Square continued.....

Post by broady_6 » 15th February 2020 - 9:04pm

Oh crikey, so he did build it backwards then!? at least you seem to be winning now. Nice to have it back on the road?
The sultan of swing

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sparkywig
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Re: '67 Square continued.....

Post by sparkywig » 15th February 2020 - 10:18pm

The new bearing caps and carrier mounts were refitted 90 degrees out, and at opposite ends.
20 minutes and it was sorted.

Image

Image

Once the weather has improved I'll dry the car out, readjust the brake pushrod and put some miles on it before I decide what I'm going to do.
Although most of that will be done in 3rd gear. :lol:

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sparkywig
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Re: '67 Square continued.....

Post by sparkywig » 20th February 2020 - 12:56pm

Just a quick question for anybody reading this.
Is there any reason why since refitting the engine and gearbox it sits about 10mm higher? The air filters are higher than the decklid now.

Before

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After

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Image

Image

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937carrera
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Re: '67 Square continued.....

Post by 937carrera » 20th February 2020 - 1:00pm

Is it possible to fit the engine bar upside down ? (seen that on an ARB)

Spacers missing ?
David
1974 412LS Variant
1973 412LE 4 door Fastback / Saloon

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sparkywig
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Re: '67 Square continued.....

Post by sparkywig » 20th February 2020 - 1:34pm

It's a swing axle car, so the gearbox is secured to the frame horns by the same gearbox bracket, and the same number of spacers used at the rear engine mount.

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