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How much HP can a gearbox stand???

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1916baja Custom Title Time!

1,990 posts · joined Sep 2007 ·

#815441
Hi guys, Just wondering how much i horsepower i could throw at a stock 1500 beetle gearbox before blowing it to peices? Keep in mind its a really good stocker. gears are nice and tight no crunching.... And what would be the effects if i throw a set of slicks into the equation????

cheers
Mick.

RISKY4LIFE Officially Full-On Dubber

308 posts · joined Jul 2010 ·

#815460
thats a good question
who knows ?
but on avrage?
and what kind of hp is it running? 100 ? 200?
now there are a few thing that help it last long
the clutch, shocks tyres,bracing,street use, drag etc
now im just a novice and thats what i have been researching
but i think if your kind to it 100 hp donk the box should last some time
still i don't real know what im talk about 😀 as i dont have 100 hp 😢

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

8,040 posts · joined Jan 2003 ·

#815468
its more how you treat it, rather than just HP. Slicks and hard launches will KILL a standard gearbox 👍


1916baja Custom Title Time!

1,990 posts · joined Sep 2007 ·

#815544
hmmm.... maybe a stronger box is in order as slicks and hard launches are what i'm planning 😁

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

8,040 posts · joined Jan 2003 ·

#815547
its the diff that tends to let go......so maybe just put a super diff into your standard box.


1916baja Custom Title Time!

1,990 posts · joined Sep 2007 ·

#815576
Is it expensive? Hard to do?

matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 ·

#815587
Mmmmm hard launches and slicks..... might need more than just a superdiff, unless you have a very small displacement engine.
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE

vlad01 Compulsive Aussie Vee Dubber

4,270 posts · joined Jun 2010 ·

#815593
how much hp? its more of a question of how much torque til it dies.

71 notchback,
Past owner of, 70 NB, 73 SB and 72 FB TLE

dekkerboy Slammed & Awesome Dubber

96 posts · joined Oct 2009 ·

#817101
Well, they put rotaries on stock gearboxes and provided your easy on them they will last, and a rotary will have alot more power then a VW engine. If your gonna be crule just spend the money on a better gear box, ive seen some strong boxes go on ebay for under $400.

bajachris88 The international telephone dialing code for Antarctica is 6

6,661 posts · joined Apr 2005 ·

#817103
perhaps fit kombi box with a non hardcore clutch to 'ease' heavy launches...

unless u got a fat wallet 😎
(ô_!_/ô) (ô_!_/ô)
69' baja: kombi box, thing spindles, irs, disc front, type 3 rear drums, 2 inch lift kit, 31x10 rears. 👍
New engine in process: 94mm p&bs, 74mm C/w chomol Crank, 35.5x39 SP heads, turbo. Wierd combo, hopeful torque monsta!

1916baja Custom Title Time!

1,990 posts · joined Sep 2007 ·

#817112
It's swingaxle so a kombi box is no good.... I had enough trouble finding a good one for my baja. What you mean by non hardcore clutch? i run a kennedy stage 1 in my baja and its fantastic.

bajachris88 The international telephone dialing code for Antarctica is 6

6,661 posts · joined Apr 2005 ·

#817131
The hardcore clutch would instantly slam that dumped torque when you free the clutch...

By going something not so awesome... it'll slip a little instead progressively applying your torque and not busting your box.
IE: make the weak link in the drive train something that isn't as expensive or depressing as a gearbox rebuild.
(ô_!_/ô) (ô_!_/ô)
69' baja: kombi box, thing spindles, irs, disc front, type 3 rear drums, 2 inch lift kit, 31x10 rears. 👍
New engine in process: 94mm p&bs, 74mm C/w chomol Crank, 35.5x39 SP heads, turbo. Wierd combo, hopeful torque monsta!