Gearbox ratios

Mad Manx KombiKroozin

456 posts · joined Aug 2002 · 1 Mar 2003, 12:10 am

#29103

Can some wise person tell me what type of vw gearbox has the lowest ratios (in particular 1st & 2nd) and what identifying features it has to pick it from the rest. Its to fit in my manx (type 1 1600TP engine).
Thanks very much😎

- '71 Kombi (Died 24/11/05😢 ) - '65 manx (smick) -'63 beetle (bent) -'73 Singlecab (new to the stable)

70AutoStik Insano Dub Head

730 posts · joined Aug 2002 · 1 Mar 2003, 12:35 am

#29106

Beetles all had pretty much the same ratios and they're pretty well chosen - you're better off choosing a higher diff ratio for most engines (all-out drag engines being the exception.)

Mad Manx KombiKroozin

456 posts · joined Aug 2002 · 1 Mar 2003, 12:40 am

#29109

31 inch tires and a standard type 1 box dont mix in the sand.....
Are other ratios available for beetle boxes that i can drop in?????
🙁

- '71 Kombi (Died 24/11/05😢 ) - '65 manx (smick) -'63 beetle (bent) -'73 Singlecab (new to the stable)

Buger Gary Seriously Crusin Dubber

159 posts · joined Aug 2002 · 3 Mar 2003, 9:05 pm

#29555

We fitted kombi reduction boxes to our beach buggies and with 4x4 tyres or implement tyres the made the gearing spot on for the sand.You have to make up blocks as they are wider.The only draw back is they lift the back up when you boot it, which is ok untill you are in a slide because then your wheel track is narrower then they tend to fall off their wheels! I don't know what they are like on the road as we only use them off road.I hope this is some use to you.
Gary.

type82e Wolfsburg Wizard

591 posts · joined Aug 2002 · 3 Mar 2003, 9:54 pm

#29578

convert it to irs and fit a bay kombi gearbox they have much lower final drive ratio's and are much stronger
marcel

aussiebug Officially Full-On Dubber

246 posts · joined Sep 2002 · 3 Mar 2003, 10:35 pm

#29595

If you have a swing axle gearbox, the best you can do is to put the 1200/1300 final drive in there (assuming it doesn't already have one).

That's 4.375 which will lower all gears.

the other common size is the 1500/early 1600 final drive of 4.125, but the actual gear ratios are the same for both boxes.

The 1200 boxes should have a AA cast into the right side - above the VW logo and case part number - it's sometimes faint and hard to see.

AB is the same box in a 1300. AC should be the 1500/1600 box with the 4.125 final drive.

Country buggies had the 1200/1300 box and reduction boxes (1.2:1?) from the early bus/kombi - now THAT would give you some low ratios to make up for the 31 inch dia tyres - the normal daimeter of bug tyres is about 24 inches.

Rob
Rob and Dave's aircooled VW pages
Repairs and maintenance for the home mechanic
http://www.vw-resource.com

Mad Manx KombiKroozin

456 posts · joined Aug 2002 · 4 Mar 2003, 7:47 pm

#29775

Thanks guys:thumb
I have a '63 1300 bug out the back... Its got a 1600SP in it now but I will have to check the gearbox.... my solution may have been staring at me the whole time!

- '71 Kombi (Died 24/11/05😢 ) - '65 manx (smick) -'63 beetle (bent) -'73 Singlecab (new to the stable)