gearbox for 12a · Aussieveedubbers

71superbug · 16 Mar 2005, 9:03 pm

hey, was wondering if a stock 4.125 t1 box could handle an atmo 12a carby motor.

these were about 112hp when NEW.

so say a used one makes about 100hp.

Anthony

71superbug · 16 Mar 2005, 11:22 pm

bump

Che Castro · 17 Mar 2005, 8:32 am

probably. but no box will last if you dump the clutch at 10,000rpm all the time

71superbug · 17 Mar 2005, 3:18 pm

wouldnt be dumping the clutch all the time. just wondering as i MIGHT chuck in an atmo 12a for drag wars which is coming up in a month.

anthony

Doug Sweetman · 17 Mar 2005, 4:57 pm

Absolutely. SSP box should be fine for that power level - there are plenty of NA VW motors around making more than that running stock SSP boxes.

Like any pobjoy steroid engined car - they are ~ 120hp or so.

71superbug · 17 Mar 2005, 7:00 pm

my current box isnt the single side plate box with the 3.88r&p. mine is the 4.125 box with dual plates.

Anthony

Klaus · 12 Apr 2005, 10:46 pm

Don't sell yourself short stock 12a's make about 130 hp , that was even in 71.

malcolm · 12 Apr 2005, 10:53 pm

the question is the rpm difference between the two motors to gearbox say 5500rpm to 8500rpm

seagull · 13 Apr 2005, 1:30 am

Get the one I have before it goes out the door

Secoh · 13 Apr 2005, 11:30 am

Power doesn't break things, torque does. An atmo 12A doesn't have a lot of torque compared to it's turbo counterparts, and is probably comporable to a reasonably worked 1600-1800cc VW motor, so I'd say it'd be fine as long as you don't abuse it.

Well, that and I have seen some 12A VW's getting around on the single sideplate boxes with apparently no issues.