GolfGTIforum.co.uk
Model specific boards => Golf mk2 => Topic started by: Jimmyrallye on 27 November 2012, 22:55
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Recently fitted a abf gearbox flywheel ect on my mk2 20vt and have noticed its realy crap compared to the mk2 8v box i took of to replace it with... Got confirmed tonight when my mate spanked me in hes clio182 whilst given it 4 weeks ago i left him in 3rd with the 8v box on ??? Im confused as i thought a abf box with cables wos a upgrade !!!! :( any help or advice would be great :)
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I'm sure the 8V box will have much lower ratios. From memory, the Mk2 8V had a top speed of about 115mph at getting towards 6000rpm in 5th. The Mk3 16V had a top speed of 135ish mph at just over 6000rpm.
Your car would have been a flyer with the 8V box, but would run out of revs at big speeds. The ABF box will give you the opposite results.
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find the ratio's of the mk3 16v box and then compare them on this, there is a handy speed converter included :)
http://www.scirocco.org/gears/
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Thanks dubber and gambit kind of wish i kept the 8v box on now but it kept slipping with the torque ... Car could do with remapping any way and at least the gear change is nice and smooth now !! Guess il be throwing more money at it :)
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IIRC you can take the abf 5th and put it in the 8v with difficulty... or am I thinkning of 16vs or a 4e? or have I made it up :laugh:
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Nope not made up, 4e on a 16v 020...
http://www.brokevw.com/5thswap.html
So research into 8v box possibilities will be worth it
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Yes but the reason for going cable-change is for a more durable box and stronger clutch.
To resolve the 'speed' problem you have you would need to replace the final drive in the CDA box with a shorter final drive.
If you're still running the 10kg flywheel, get that taken down to 6kg as well - will make a significant difference too.
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Yes im running the standard mk3 16v flywheel as i just robbed everything i needed of the mk3 ,, you say changed the final drive do you mean by changeing 5th gear ? As its pants in all the gears if im totaly honest
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What bhp/torque are you running on the 20vt?
If you gear it down now and increase bhp/torque later you will be in a similar situation.
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you say changed the final drive do you mean by changeing 5th gear ?
No, I mean changing the final drive, which sets the gearing of the whole 'box. Effectively you're making all of the gears shorter.
Good time to put an LSD in if you're that far down the 'box.
Find someone who builds boxes and talk to them about your requirements.
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Just running a standard agu engine on standard management ... Thanks for the imput guys could i fit a 1.8 mk4 gearbox or even a 1.6 on my engine saves getting abf box rebuilt ? Im running a hydro cable as well
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On Dave_iow's Golf2 we've fitted CDA shafts and the cups off the CDA gearbox as well.
That's the five speed box that was on his Golf4 originally, so should work with the engine.... BUT it's probably going to be as long-geared as the CDA box from the ABF as I think you'll find later cars aren't geared for 'sprint' like the Golf2 was.
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A 3.6 FD is std in an ABF box, you can put a 3.9 or a 4 in which will gear down the output of the box in that it will turn .3 or .4 times more per revolution.
The std 8v box has the same FD ratio but is geared a bit lower through the range....
Are you sure you did not have a leaking seal when the clutch started slipping? it only takes a drip or two of oil to get into the friction material to make it slip at peak torque.
I have run a modded KR before with no slip, granted it does not have the torque of a turbo which is a big factor but you should just be lighting up the wheels rather than slipping :undecided:
AS DH says the later boxes are designed to give economy / higher top speed but with a hike in torque that a map/more boost will give you then a longer box makes more sense as you can use the torque to more effect.
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gears are taller and you don't have much power. get it mapped so it has some torque to make use of the gears
will feel quicker with a 020 as previously said 020 is lower geared and flywheel assembly is much lighter as well as whole box is lighter - but made of cheese
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Brilliant thanks very much guys does make sense now you have explained :) will be getting it mapped soon as well .. And now i think about it yes i did have a leak on one of seals so that could of why it been slipping i just put it down to the 198k box i bolted back on tho to get the car driveable.. Thanks everyone :)
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would be rude not to put a 4.2 fd in there :evil: