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Best gearbox for 1.8t conversion

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Best gearbox for 1.8t conversion

My mk1 is running a 1.8t conversion but the ratios are pretty low making 1st 2nd pointless it's an O2J EMR I believe from a mk4 2.0 Gti what would you recommend using instead for better cruising speed in top and slightly longer gears so I can put a little more power down ?

The box has the side bolt through mounting holes for the mount

Cheers

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g60 or a diesel box

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JonP said

g60 or a diesel box

Apologies hijacking this thread, Is there a suitable mk4 diesel gearbox that could be used?

If so, which gearbox code would folk recommend?

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02J with 100mm cups is a proven choice

Speeding is like masturbation, everyone does it ,but it's not something you should record and put on the internet!! 

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collo16v said

02J with 100mm cups is a proven choice

Anyone know how much power/torque can these handle?

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Lhasa2008 said

collo16v said

02J with 100mm cups is a proven choice

Anyone know how much power/torque can these handle?

No idea but i had both 02J and 02A, looked at the gearing and the 02J will hit almost 70 in second unlike the 02A just about 60 at 7k rpm but the the 02J was almost flat out at 135 mph and the G60 box was 168 mph at 7k in 5th.

G60 box is the way togo if you want lower rpm to speed..

02J with 100mm cups are only from the very early 20v mk4 golfs, not sure on other models if any…

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Climbatize said


the 02J was almost flat out at 135 mph and the G60 box was 168 mph at 7k in 5th.

02J with 100mm cups are only from the very early 20v mk4 golfs, not sure on other models if any…

I can only imagine what 168mph feels like in a mk1..  8O

Useful info on the mk4 box, thanks.  Lhasa2008

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After looking into it the ENJ or EHA have the highest petrol ratio boxes of the o2j range il be fitting a ENJ in the new year

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Has anyone tried a DQY tdi 1.9 mk4 gearbox, approx 148 mph @ 7000rpm?

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higher1 said

After looking into it the ENJ or EHA have the highest petrol ratio boxes of the o2j range il be fitting a ENJ in the new year

Hi, it would be good to see how you get on with the ENJ.

Cheers

Lhasa2008

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Lhasa2008 said

higher1 said

After looking into it the ENJ or EHA have the highest petrol ratio boxes of the o2j range il be fitting a ENJ in the new year

Hi, it would be good to see how you get on with the ENJ.

Cheers

Lhasa2008

I will update the post once it's fitted will be a while yet as the car is stripped ready for painting in January

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hi mate did you want my ENJ box??

Birmingham

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c11rgd said

hi mate did you want my ENJ box??

Hi I bought one local to me in the end

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VW Tranny Code Chart

have a look at the ratios to make up your mind .

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02a and 02j are basically the same box so no worries in regards to power, just a case of get one with the ratios you want. as said diesel ones have the taller ratios that suit booooost.

the later mk4 boxes have an improved shifter setup over the 02j and early mk4 02j you can convert an older box by sweappign the shifter tower as well as the gear shifter box and cables. if the mk4 cables are too long polo and seat have shorter ones which may help but again you need the right shifter and cable setup to match the tower on the box

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Hi, I know this is years old but just curious as to how the ENJ box worked out for you.....

1983 VW Golf GTi  

2014 VW Transporter 2.0 TDi Daily 9A6BDAFE-3080-4430-8FE7-47D066D2E592.jpeg

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I fitted an 02J in to mine yesterday, when I had it built I asked for the same ratios as my Skoda Fabia 1.9 TDI which revs at 2500 rpm at 80 mph.

I can confirm that in the wet at 6000 rpm it is very exiting! For some reason the speedo has decided to not work since the dash and gearbox swap.

I was hoping to put the newer shifter/selector in as well yesterday but have some parts missing, can anyone point me in the right direction please?
The Audi short shifter is on my list to buy but the ones I'm looking at online are just the big cast metal piece with the pins to go in the ends of the newer shifter but it looks like I need a bracket of some sort?


2975CAF3-6560-44A1-8124-4E57B2DA2E0F.jpeg D12F8B04-4B1E-443F-853B-FFD54A479881.jpeg

Last edit: by Pete M


1983 MK1 Golf four door 1.8T 20V BAM remapped, MK2 dash and loom, TMI interior.  daily.

2014 VW California 5.1 with full Sportline kit, weekend home.

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you need to change the whole shifter tower that sits in the gearbox as well, you have the 02a style one

the tower you mention is the right one, but ask audi sometimes they are cheaper than ebay ;)

there are 2 types of 'late' 02j tower as well, early-late and late-late. early-late have ball end cables, late-late its pin end like what you have,. if its an early-late you have you can still use it, either put the early end on your cables or swap the linkage piece the cable attaches to match your late-late ends. the cables and gearstick are the same either way

Hello my name is John and I'm a dub addict.



My wiring diagrams and other documents have moved here:

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I was going to purchase this kit!?

Image result for FMVWSQS Shifter
Do I need all of this, that looking like expensive!!!


 
      shift rod, shift rail, selector fork, for 5 speed manual transmiss.     EBF,EGS,EBD,, EGV,EBM,EGW,, EBN,FBX,EGY,, ENJ,EVS,EBJ,, EGR,EWU,EHA,, EUH,EVQ,EXE
1 02J301231A   selector housing   1 EBF,EBJ,EBD,, EBM,EBN,ENJ,, FBX,EWU
1 02J301231B   selector housing   1 EGS,EGV,EHA,, EGR,EGW,EGY,, EVS,EUH,EXE,, EVQ
1 02J301231B   selector housing   1  
2 02A301227M   shaft oil seal 24,3X6,4 1  
2 02A301227C   shaft oil seal 24,3X6,5 1  
3 02K945415K   switch for reversing light   1  
4 02J301127   lock screw M8 1  
5 02A311648C   ball sleeve 15,2X23X23 1  
6 014301485   cap for venting the gearbox   1  
7 02A301320B   stop ring 15,8X28X1 1  
8 02J301233F   shift rod   1 EBF,EBJ,EBD,, EBM,EBN,ENJ,, FBX,EWU
(8) 02J301233R   shift rod, G >> 05 08 1   ;1 EGV,EGS,EGR,, EGW,EGY,EVS,, EHA,EUH,EXE,, EVQ
8 02J301233AC   shift rod, G >> 06 01 3   ;1 EGV,EGS,EGR,, EGW,EGY,EVS,, EHA,EUH,EXE,, EVQ
(8) 02J301233AF   shift rod   1 EGV,EGS,EGR,, EGW,EGY,EVS,, EHA,EUH,EXE,, EVQ
(8) 02R301230D   switch unit, also use:, — MQ250 - 5 GANG—— 0A4 301 256 C 1 EGV,EGS,EGR,, EGW,EGY,EVS,, EHA,EUH,EXE,, EVQ

Last edit: by Pete M


1983 MK1 Golf four door 1.8T 20V BAM remapped, MK2 dash and loom, TMI interior.  daily.

2014 VW California 5.1 with full Sportline kit, weekend home.

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no not that kit! thats for the 6 speed 02M.

yes to convert early 02j to later 02j you need part 1-8 off a donor car in scrappy. plenty of mk4 in there to rob oen from its not specific to the 20v most of the 4 cylinder mk4 use a variant of the 02a/j. just ignore the really poverty spec with 020 type box or luxury spec with 02m 6 speed

the tt shifter ou need is for 5 speed 2wd models only, part number 8N0711051, 8N0711046 or 8N0711051A. this type:
https://www.ebay.co.uk/itm/172144221592

as I say check with audi though, they only want 32.77 for the lever ;)

Hello my name is John and I'm a dub addict.



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