| [ Total Views: 678 | Total Replies: 8 | Thread Id: 107866 ] |
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 blompod
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| posted on December 10th, 2014 at 05:38 PM |
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Gear boxes 60ies and 70ies
Is there a difference? I have a 1600tp in my 62 Beetle and I assume it has the 1200 gear box in it. Would it go better with a later gear box?
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fish26
A.k.a.: benito
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| posted on December 10th, 2014 at 07:50 PM |
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Look up your gearbox code located on the bottom right side if viewing from the rear, might have been changed at some point.
bitten by the bug..........several times
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psimitar
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| posted on December 11th, 2014 at 10:27 PM |
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Yea, you need to look up the code so you can see what gearing you have in there but in essence a 1200 box will run out of revs on the motorway more so
than a 1600 box but apart from the GT box, freeway flyer, none were really meant to cruise at 70mph all day long. 
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hus22l
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| posted on December 12th, 2014 at 04:34 AM |
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Are there any recommended local shops that can refurb a gearbox?
Is it better to get a 70's (1600) box or can you change the gearing in an earlier one?
Also what changes need to be considered given the different suspension setups?
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psimitar
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| posted on December 12th, 2014 at 12:02 PM |
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Dangerous is the guy most people trust on this forum. He's very good at building a strong box and knows the specific parts that need changing to make
it a better box.
I bet most local gearbox rebuilders wouldn't know this type of info and would use the most economical parts to rebuild your box but you never know
what state the internals are in until the box is apart and then a quote can be made on the rebuild cost.
Now if you are meaning just swapping gearsets from one box to another then that's pretty straighforward as not much changed internally on Beetle box
casings. Changing ratios requires the gears stripping from the main and lay shafts with all the baulk rings and then gets tricky putting that back
together.
Suspension is no different on swing axles but the driveshaft length did change from early to late boxes but I think the springplate position didn't
change but the hub housing length. I'm no expert on this but know the basic differences but never had a need to change driveshaft lengths so I hope
someone else can fill in the gaps
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fish26
A.k.a.: benito
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| posted on December 12th, 2014 at 12:09 PM |
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As mentioned, there's Dave Butler, Shimmo
If you want someone local Hans Klaack in Fairfield will build you a nice box
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blompod
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| posted on December 14th, 2014 at 07:01 AM |
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| Quote: | Originally
posted by psimitar
Yea, you need to look up the code so you can see what gearing you have in there but in essence a 1200 box will run out of revs on the motorway more so
than a 1600 box but apart from the GT box, freeway flyer, none were really meant to cruise at 70mph all day long.
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So if its a 1200 box what would be the recomended highway speed as to not stress the box or 1600 engine on a long trip? 80-90 kph?
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hellbugged
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| posted on December 14th, 2014 at 09:01 AM |
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My stock 66 pulls along at 100km/h no problem
1300 single port
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psimitar
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| posted on December 14th, 2014 at 05:01 PM |
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From my knowledge the most constant engine revs you want to pull is 4500rpm on a 13-1600 engine. Any engine guru's feel free to correct me.
Then you have to do the maths of the tyre circumference and gearset/differential ratio to see what gearing would let you cruise all day at your
desired speed.
I mean at the moment does it sound like it is screaming it's head off at 90-100KPH?
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