Skip to content
Aussieveedubbers

Tallest Type1 Diff Ratio?

0 likes
Share Share on Facebook Share on X Share on Reddit
Log in to reply

tassupervee That really hurts doesnt it!

1,171 posts · joined Sep 2003 ·

#179275
Guys
Whats the tallest ratio diff for a type 1 barrel box.
I have the usual 4.3 & 4.1 but I was wondering iffen there was anything taller.
Reason is I have some close ratio straight cut gears but the 4th gear is 1.2:1
This is a mighty short top gear.
L8tr
E

[Edited on 27/5/04 by tassupervee]

[Edited on 27/5/04 by tassupervee]
Im not a complete idiot, quite a few parts are missing....

1303Steve Scirocco Rare

8,650 posts · joined Aug 2002 ·

#179285
Hi

Its 3.88. Im using 3.55 1st, 2.00 2nd, 1.30 3rd and .93 4th woth a 3.88

1302Steve

tassupervee That really hurts doesnt it!

1,171 posts · joined Sep 2003 ·

#179293
Cewl
What car uses that diff ratio dude?
L8tr
E
Im not a complete idiot, quite a few parts are missing....

1303Steve Scirocco Rare

8,650 posts · joined Aug 2002 ·

#179303
Hi

73 on L bugs, single side plate, careful you dont end up with a late Type 3 box, they use 4.125.

1302Steve

gayanne Officially Full-On Dubber

307 posts · joined May 2004 ·

#179346

twoguns simply aircooled

4,275 posts · joined Nov 2002 ·

#179380
? are these all IRS boxes?
Simply Cruzin'...

56astro Custom Title Time!

1,772 posts · joined Aug 2002 ·

#179391
I never ended up finding out 2G

I played around with the gear calculator and compared that R&P with std L-Bug gears -vs- 3.88 R&P / L-Bug box with 0.82 4th. The 4th gear final drive was almost a perfect match with each other, and 1st, 2nd, 3rd would have all been taller. Great for a light car with torquey motor.

But the $$ scared me off! :cry

VW car, VW engine ...... keepin it "real"
35MPG on 101.3kPa

tassupervee That really hurts doesnt it!

1,171 posts · joined Sep 2003 ·

#179609
Guys
Excuse my ignorance here but WTF is an "L bug"
I saw '73 on but how do I identify the boxes if they are outside the car??
Im not up on this kind of stuff.....

L8tr
E
Im not a complete idiot, quite a few parts are missing....

AdrianH Officially Full-On Dubber

257 posts · joined Mar 2004 ·

#179637
They are a single side cover box. Looking from the rear of the car the RHS diff side cover is cast integral with the tranny...

FWIW - 3.88 r and p and a std 1.26 3rd gets you 100mph with 205/70 s at 7000 rpm ---- or there abouts

1303Steve Scirocco Rare

8,650 posts · joined Aug 2002 ·

#179750
Hi

An L bug is a 73 - 75 bug with curved front screen, also called a 1303. The last bugs made in aus in 1976 also used a 3.88, you can easily see if the box has 1 side palte from under the car.

1302Steve

tassupervee That really hurts doesnt it!

1,171 posts · joined Sep 2003 ·

#179791
Ahh kay thanks for that info men.
I wont be running the tall third.
My gears are aftermarket straightcut things and third is about 1.5 and fourth is somewhere around 1.2 (from memory)

Thanks for the tips men
L8tr
E
Im not a complete idiot, quite a few parts are missing....

56astro Custom Title Time!

1,772 posts · joined Aug 2002 ·

#180238
Here's a graph showing the comparisons of an

L-bug box with 3.88 R&P -vs- L-bug box with 3.66R&P



[Edited on 30-5-2004 by 56astro]

VW car, VW engine ...... keepin it "real"
35MPG on 101.3kPa

Craig Torrens 6 times Australian, 7 times State Hillclimb Class Champion

8,040 posts · joined Jan 2003 ·

#180565
3.88 ratio gear boxes have weaker gears, maybe stick with a 4.1 and play with gear ratios.

just a thought.


Cam Custom Title Time!

1,535 posts · joined Aug 2002 ·

#180570
Should be tough enough for a formula vee tho?

Craig Torrens 6 times Australian, 7 times State Hillclimb Class Champion

8,040 posts · joined Jan 2003 ·

#180585
is it for the vee ?


and he's already using modified gears, so that should be alright


Cam Custom Title Time!

1,535 posts · joined Aug 2002 ·

#180591
Just had another thought tho, aren't the IRS diffs non transferable to S/A?
If so, get onto someone in the UK and ask for them to get hold of a "GT" beetle diff. These were UK only cars, they were swingaxle, had the 3.88 diff, but the diff was a limited slip item.

tassupervee That really hurts doesnt it!

1,171 posts · joined Sep 2003 ·

#180681
Hmm all interesting food for thought.

Im using the stock 1st & 2nd gears but using straight cut close ratio third and fourth in a T1 swingaxle arse end.

The engine is a turbocharged but otherwise stock 1600 TP. Only a light blowjob. Ill keep it at 8 Lb boost pulling thru a 45mm HIF SU.

Yep, its going into the F-Vee as a play toy cum clubday car and mebbe a couple of hillclimbs just for laughs.

Since I have these straightcut 3rd & 4th gears laying about I might as well use them. Prolly wasting my time really but why the hell not?

I expect to see about 100 road wheel HP pushing less that 500 kilos so I imagine it would run out of revs pretty quickly using a 4.1 diff which will go in in the interim.
I may even simply lock (weld) up the diff altogether rather than mess with pricey and rare(ish) LSD's. Its just a play thing remember.

Secondly, I will be using 14" Porsche wheels with more road going tyres on the thing sos I dont have to mess with stripping and remounting the Vee tyres.
I dont yet know what type or size of tyre as yet so the rolling circumference may be a bit smaller than the RA500 Bridgestones Im racing on now.

L8tr
E
Im not a complete idiot, quite a few parts are missing....

gayanne Officially Full-On Dubber

307 posts · joined May 2004 ·

#180794
tassupervee wrote:Hmm all interesting food for thought.

Im using the stock 1st & 2nd gears but using straight cut close ratio third and fourth in a T1 swingaxle arse end.

The engine is a turbocharged but otherwise stock 1600 TP. Only a light blowjob. Ill keep it at 8 Lb boost pulling thru a 45mm HIF SU.

Yep, its going into the F-Vee as a play toy cum clubday car and mebbe a couple of hillclimbs just for laughs.

Since I have these straightcut 3rd & 4th gears laying about I might as well use them. Prolly wasting my time really but why the hell not?

I expect to see about 100 road wheel HP pushing less that 500 kilos so I imagine it would run out of revs pretty quickly using a 4.1 diff which will go in in the interim.
I may even simply lock (weld) up the diff altogether rather than mess with pricey and rare(ish) LSD's. Its just a play thing remember.

Secondly, I will be using 14" Porsche wheels with more road going tyres on the thing sos I dont have to mess with stripping and remounting the Vee tyres.
I dont yet know what type or size of tyre as yet so the rolling circumference may be a bit smaller than the RA500 Bridgestones Im racing on now.

L8tr
E
TextDoes the Fvee use cable or hydraulic driven clutch ?(just thinking)JVLRacing

tassupervee That really hurts doesnt it!

1,171 posts · joined Sep 2003 ·

#180800
Hydraulic
L8tr
E
Im not a complete idiot, quite a few parts are missing....

gayanne Officially Full-On Dubber

307 posts · joined May 2004 ·

#180842
tassupervee wrote:Hydraulic
L8tr
E

tassupervee That really hurts doesnt it!

1,171 posts · joined Sep 2003 ·

#180845
Cewl!
I have got as tough 200mm clutch made for this turbo thing so it may be a bit more than a dab, more like a stomp, but the stock 180mm clutch is light as!

Not many Vees still use cables tho....eyeewwww!

L8tr
E

[Edited on 31/5/04 by tassupervee]
Im not a complete idiot, quite a few parts are missing....

gayanne Officially Full-On Dubber

307 posts · joined May 2004 ·

#180921
[Edited on 31-5-2004 by gayanne]

[Edited on 31-5-2004 by gayanne]

Cam Custom Title Time!

1,535 posts · joined Aug 2002 ·

#181011
gayanne wrote:Good stuff, i use hydraulic as well inthe sportsedan with straight cut gears 3.88.1no need to push clutch to the floor just dabbing almost like a air shifter.JVLRacing
Sports sedan?!?!?! You been holding out on us, dude? 😉 Any chance of seeing some pics and/or a run down on it? Would have to be a new post tho, don't want to hijack this one.😎

Cam

[Edited on 1-6-2004 by Cam]

tassupervee That really hurts doesnt it!

1,171 posts · joined Sep 2003 ·

#181035
Bring the 'Vee to Nambucca?
Hmmmm, fair bit of a drive from Hobart dude!
hawhawhaw
l8tr M8
E
Im not a complete idiot, quite a few parts are missing....

gayanne Officially Full-On Dubber

307 posts · joined May 2004 ·

#181090
Cam wrote:
gayanne wrote:Good stuff, i use hydraulic as well inthe sportsedan with straight cut gears 3.88.1no need to push clutch to the floor just dabbing almost like a air shifter.JVLRacing
Sports sedan?!?!?! You been holding out on us, dude? 😉 Any chance of seeing some pics and/or a run down on it? Would have to be a new post tho, don't want to hijack this one.😎

Cam

[Edited on 1-6-2004 by Cam]

tassupervee That really hurts doesnt it!

1,171 posts · joined Sep 2003 ·

#181113
Looking at that Kraut, how mad would it look with about a 4 inch chop to the roof!!
crikey!
L8tr
E
Im not a complete idiot, quite a few parts are missing....

gayanne Officially Full-On Dubber

307 posts · joined May 2004 ·

#181263
tassupervee wrote:Looking at that Kraut, how mad would it look with about a 4 inch chop to the roof!!
crikey!
L8tr
E