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Early vs late bay beam tube distance
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lightice
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PostPosted: Thu Aug 10, 2017 10:42 pm    Post subject: Early vs late bay beam tube distance Reply with quote

Hi guys, I know that the bolt patterns are different on the early and late bays.
But what about the distance between the tubes?

Are the early same as the splits or the same as the late bays?

Thanks in advance.
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Tcash Premium Member
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PostPosted: Thu Aug 10, 2017 11:36 pm    Post subject: Re: Early vs late bay beam tube distance Reply with quote

https://www.thesamba.com/vw/forum/viewtopic.php?p=1269469#1269469

cker5 wrote:
It's not a black and white answer. I have a 70' and had the same question. I have a replacement 69' beam and it has the same bolt pattern as my 70' beam but the 69' beam is actually wider than my 70' beam. It depends when the 69' was manufactured. VW changed the production line in August each year so if the bus was manufactured after August it could fit. Keep in mind that all beam widths are not created equal, VW had special shims made to fit beams that were wider (good luck finding them). You are out of luck if the replacement beam is too short.


Image may have been reduced in size. Click image to view fullscreen.
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lightice
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PostPosted: Fri Aug 11, 2017 12:08 am    Post subject: Re: Early vs late bay beam tube distance Reply with quote

Hi Tcash,

Actually what I meant was the distance between the 2 torsion leaf tubes, not the track width.

Image may have been reduced in size. Click image to view fullscreen.


As per this image, but this is from someone who wants to make the bolt mounting plate.
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brettsvw
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PostPosted: Fri Aug 11, 2017 3:56 am    Post subject: Re: Early vs late bay beam tube distance Reply with quote

The only differences are bolt pattern and the early bay beams are missing the brake servo mounting bracket.
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lightice
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PostPosted: Fri Aug 11, 2017 8:41 am    Post subject: Re: Early vs late bay beam tube distance Reply with quote

okay cool thank you!
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Tcash Premium Member
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PostPosted: Fri Aug 11, 2017 8:44 am    Post subject: Re: Early vs late bay beam tube distance Reply with quote

lightice wrote:

Are the early same as the splits or the same as the late bays?
Thanks in advance.

Ah, the early is the same as the Bays
Tcash
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busman78
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PostPosted: Fri Aug 11, 2017 9:21 am    Post subject: Re: Early vs late bay beam tube distance Reply with quote

Not exactly, they do not directly interchange due to the mounting bolt pattern. The late beams do not come with six holes, at least I have never seen one.

70-79 the mounting bolt pattern is the same, the 70 does not have the servo bracket.

68-69 beams will bolt to 64-67 splits, upgrade the split to ball joint or down grade your bay to king pin. Drawback being the ball joint front will cause the split to have a higher ride height.

There is something about the 63 and earlier beams that is different, I do not know what that is, whether width, bolt pattern or both.
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Tcash Premium Member
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PostPosted: Fri Aug 11, 2017 9:58 am    Post subject: Re: Early vs late bay beam tube distance Reply with quote

Tcash wrote:

Are the early same as the splits or the same as the late bays?
Thanks in advance.

Ah, the early is the same as the Bays
Tcash


lightice wrote:
lightice wrote:Hi Tcash,

Actually what I meant was the distance between the 2 torsion leaf tubes, not the track width.

Image may have been reduced in size. Click image to view fullscreen.


As per this image, but this is from someone who wants to make the bolt mounting plate.


Ah, I should have quoted this post!
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PostPosted: Fri Aug 11, 2017 10:12 am    Post subject: Re: Early vs late bay beam tube distance Reply with quote

busman78 wrote:
There is something about the 63 and earlier beams that is different, I do not know what that is, whether width, bolt pattern or both.


neither.
the trailing arms are different --63 vs 64-67, so beam bushings and/or bearings are not interchangeable, but the width and bolt patern are the same 3/55 through 67.
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lightice
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PostPosted: Fri Aug 11, 2017 9:10 pm    Post subject: Re: Early vs late bay beam tube distance Reply with quote

Okay cool thanks guys.

Conclusion:
So the tube distances are the same for 68-79.
If I want to mount the late beam to early bay, I'd need to fabricate a new mounting plate with the appropriate bolt patterns as per the CAD diagram.
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Tcash Premium Member
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PostPosted: Sat Aug 12, 2017 8:35 am    Post subject: Re: Early vs late bay beam tube distance Reply with quote

lightice wrote:
Okay cool thanks guys.

Conclusion:
So the tube distances are the same for 68-79.
If I want to mount the late beam to early bay, I'd need to fabricate a new mounting plate with the appropriate bolt patterns as per the CAD diagram.

Need to know what year your bus is and if it is a 69, you are going to have to measure the width of the beam you have under there and determine if it has spacers or not under the mounting plates.

Front beams

Good luck
Tcash
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brettsvw
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PostPosted: Sat Aug 12, 2017 9:38 am    Post subject: Re: Early vs late bay beam tube distance Reply with quote

Tcash wrote:
lightice wrote:

Are the early same as the splits or the same as the late bays?
Thanks in advance.

Ah, the early is the same as the Bays
Tcash


We are talking about type4 beams?

Editing to change mistake, I should be using early bay and late bay to describe type2 parts for buses 1968-79.
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http://www.thesamba.com/vw/forum/viewtopic.php?t=289807


Last edited by brettsvw on Sun Aug 13, 2017 8:11 am; edited 1 time in total
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PostPosted: Sat Aug 12, 2017 10:48 am    Post subject: Re: Early vs late bay beam tube distance Reply with quote

Thanks hazetguy, always wonder about that.

brettsvw, nope, these are Type 2 beams
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lightice
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PostPosted: Sat Aug 12, 2017 11:16 am    Post subject: Re: Early vs late bay beam tube distance Reply with quote

Tcash wrote:

Need to know what year your bus is and if it is a 69, you are going to have to measure the width of the beam you have under there and determine if it has spacers or not under the mounting plates.

Front beams

Tcash


Thanks for the link.

The beam that I intend to use for narrowing/lowering is from a late bay, but unsure which year. I'll have to measure up and follow your guide.

My original beam will be kept and stashed away in case I need it in the future.

In any case, the replacement beam would be cut and new mounting plates would be fabricated to fit.

@busman78
Brettsvw got me confused too in another thread. Laughing

@brettsvw

We are talking about bus beams, splits and bays and their mounting points and torsion leaf tube distances.
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Alan Brase
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PostPosted: Sat Aug 12, 2017 5:56 pm    Post subject: Re: Early vs late bay beam tube distance Reply with quote

brettsvw wrote:
Tcash wrote:
lightice wrote:

Are the early same as the splits or the same as the late bays?
Thanks in advance.

Ah, the early is the same as the Bays
Tcash


We are talking about type4 beams?

Uhh, you do not mean Type 4 beams.
Al
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PostPosted: Sun Aug 13, 2017 8:14 am    Post subject: Re: Early vs late bay beam tube distance Reply with quote

I apologize for the confusion. I have read numerous threads here referring to type2 from 1972-79 as type4.

I stand corrected and will try not to confuse anyone on this matter.

Back on topic. Early Bay verse Late Bay beam tube distance.
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http://www.thesamba.com/vw/forum/viewtopic.php?t=635003&highlight=

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http://www.thesamba.com/vw/forum/viewtopic.php?t=289807
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PostPosted: Sun Aug 13, 2017 8:59 am    Post subject: Re: Early vs late bay beam tube distance Reply with quote

brettsvw wrote:
I apologize for the confusion. I have read numerous threads here referring to type2 from 1972-79 as type4.

I stand corrected and will try not to confuse anyone on this matter.

Back on topic. Early Bay verse Late Bay beam tube distance.

Some 72-79 bays have a type 4 engine, but they are still a type 2 bus aside from what's in the engine compartment.
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lightice
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PostPosted: Sun Aug 13, 2017 9:29 am    Post subject: Re: Early vs late bay beam tube distance Reply with quote

Anyone with more dimensions for this image?

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TDCTDI
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PostPosted: Sun Aug 13, 2017 1:24 pm    Post subject: Re: Early vs late bay beam tube distance Reply with quote

busman78 wrote:


68-69 beams will bolt to 64-67 splits, upgrade the split to ball joint or down grade your bay to king pin. Drawback being the ball joint front will cause the split to have a higher ride height.

So... someone could use the earlier beam to lower a Bay window & still have full suspension travel?
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PostPosted: Sun Aug 13, 2017 2:17 pm    Post subject: Re: Early vs late bay beam tube distance Reply with quote

Yes, it is called a downgrade to handling, for 68-69 as a bolt on, have no idea how much lower it would be, maybe somebody that has done it will pop in.
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