Ffz gearbox

Post Reply
Prinolin
Enlisted
Posts: 6
Joined: Thu Apr 19, 2018 6:07 pm

Ffz gearbox

Post by Prinolin » Thu Apr 19, 2018 6:30 pm

Howsit guys just need some help

I currently have an ffz gearbox on my velociti,decided to drop the box on saturday and found a big hole in the belhousing on the diff side
My friend gave me an AEN box,now i dont know whether i should just put the AEN box on or swap the gears?


Sent from my iPhone using Tapatalk
User avatar
panic-mechanic
Panic's Place
Posts: 25239
Joined: Mon Jul 29, 2002 9:08 am
Membership No: 79
Location: Benoni, putfontein.

Re: Ffz gearbox

Post by panic-mechanic » Thu Apr 19, 2018 8:42 pm

AEN has MUCH MUCH longer gear ratios. So it will feel a lot slower and will be much slower accelerating. it might be lighter on fuel but it will feel very different to drive.
Stephan van Tonder - Jhb - Putfontein Benoni
'07 Audi S6 V10 - beast !!!!!
'05 Audi A6 3.0L TDI Avant
'09 Audi Q5 3l tdi
'95 Audi 90 coupe quattro
'13 VW CC 2l tdi (repair project)
'05 Touareg v10

Perfect Power dealer. I do dyno tuning.
Prinolin
Enlisted
Posts: 6
Joined: Thu Apr 19, 2018 6:07 pm

Re: Ffz gearbox

Post by Prinolin » Thu Apr 19, 2018 8:44 pm

panic-mechanic wrote:AEN has MUCH MUCH longer gear ratios. So it will feel a lot slower and will be much slower accelerating. it might be lighter on fuel but it will feel very different to drive.
So it will be better to put my internals in that casing,ive read else where that the 3rd and 4th gear on the AEN box is stronger than FFz


Sent from my iPhone using Tapatalk
User avatar
panic-mechanic
Panic's Place
Posts: 25239
Joined: Mon Jul 29, 2002 9:08 am
Membership No: 79
Location: Benoni, putfontein.

Re: Ffz gearbox

Post by panic-mechanic » Thu Apr 19, 2018 9:04 pm

Don't they can be physically stronger no but the ratios will not suit your car either. It was made for a 1.8 and 2l injection engined jetta which had a lot more torque.
Stephan van Tonder - Jhb - Putfontein Benoni
'07 Audi S6 V10 - beast !!!!!
'05 Audi A6 3.0L TDI Avant
'09 Audi Q5 3l tdi
'95 Audi 90 coupe quattro
'13 VW CC 2l tdi (repair project)
'05 Touareg v10

Perfect Power dealer. I do dyno tuning.
Prinolin
Enlisted
Posts: 6
Joined: Thu Apr 19, 2018 6:07 pm

Re: Ffz gearbox

Post by Prinolin » Thu Apr 19, 2018 9:08 pm

panic-mechanic wrote:Don't they can be physically stronger no but the ratios will not suit your car either. It was made for a 1.8 and 2l injection engined jetta which had a lot more torque.

Thanks for the advice bud,will just use the casing from the AEN,any idea where could i get the repair manual for a ffz gearbox?


Sent from my iPhone using Tapatalk
User avatar
PapaJo
Lieutenant-Colonel
Posts: 4645
Joined: Sat Apr 10, 2010 8:01 pm
Car Make: VW
Car Model: '16 Golf 7R, 86 Caddy 16V ITBs
Membership No: missing
Location: Vaal Triangle SA or Vitoria Brazil

Re: Ffz gearbox

Post by PapaJo » Thu Apr 19, 2018 10:19 pm

Prinolin wrote:
Thu Apr 19, 2018 9:08 pm
panic-mechanic wrote:Don't they can be physically stronger no but the ratios will not suit your car either. It was made for a 1.8 and 2l injection engined jetta which had a lot more torque.

Thanks for the advice bud,will just use the casing from the AEN,any idea where could i get the repair manual for a ffz gearbox?


Sent from my iPhone using Tapatalk
This link will tell you how to and what to do.
http://www.brokevw.com/
VAG Fan
Cadet
Posts: 698
Joined: Tue Mar 15, 2016 1:54 pm
Location: Pretoria

Re: Ffz gearbox

Post by VAG Fan » Fri Apr 20, 2018 1:59 pm

Stephan, are you sure about the AEN having such long ratios?

My 1990 Fox (HM) has an AEN, very much OEM. And while the ratios are slightly longer than on my 1983 GTS, they are really very similar. IIRC, 3000 rpm comes to
about 40 km/h in 2nd
very close to 60 km/h in 3rd
very close to 80 km/h in 4th
and just shy of 100 km/h in 5th.

Highway at 120 is about 3500-3600, at 4000 rpm I cruise about 130.

(This is with both the original 165/85/13 or with the 185/65/14 that I later put on.)

Those seem like pretty standard "CitiGolf ratios" to me? Just asking, because I wouldn't classify them as "long" by a far cry.
Mark R.
- - - - - - - - - -
1992 Audi 500 SE, type C4, AAR, 335k (2001-current)
1990 VW Fox, type 16, HM, 245k (2005-current)
2004 VW Golf, type 1J, AHF, 231k (2016-current)
Previous:
1978 Audi 100 GLS 5E, type 43, WC (1991-92)
1983 VW Golf GTS, type 17, FR (1992-2005 but still in the family)
- - - - - - - - - -
User avatar
panic-mechanic
Panic's Place
Posts: 25239
Joined: Mon Jul 29, 2002 9:08 am
Membership No: 79
Location: Benoni, putfontein.

Re: Ffz gearbox

Post by panic-mechanic » Mon Apr 23, 2018 9:57 am

http://www.brokevw.com/020ratios.html

AEN gearbox ratios are in there.
0.894 5th with a 3.667 final drive.

SO with your specified tyre it should be doing 140. But did you buy it new? IE knew for sure it was the original box with original ratios in?.


http://www.cargister.com/calculator-gea ... =&teeths[2][]=
Stephan van Tonder - Jhb - Putfontein Benoni
'07 Audi S6 V10 - beast !!!!!
'05 Audi A6 3.0L TDI Avant
'09 Audi Q5 3l tdi
'95 Audi 90 coupe quattro
'13 VW CC 2l tdi (repair project)
'05 Touareg v10

Perfect Power dealer. I do dyno tuning.
VAG Fan
Cadet
Posts: 698
Joined: Tue Mar 15, 2016 1:54 pm
Location: Pretoria

Re: Ffz gearbox

Post by VAG Fan » Mon Apr 23, 2018 11:36 am

The car has been in our family (aunt, then myself) since 1990, bought new. I would have known about gearbox work.

OK, just checked the online speed calculator linked on that page. For my two tyre specs it says 136-137 km/h at 4000 rpm, 102 km/h at 3000 rpm. That's not far from my measurements; there may be a slight error in the speedo or the rev counter.

I wasn't aware that [email protected] would classify as "much much longer" than other Citi boxes. To me, that's still quite short, and the HM doesn't feel slow or slow to accelerate. I had a "4+E" exchange box in my first Audi that did [email protected], where I got my idea of "long".

Sorry to OP, didn't mean to derail thread.
Mark R.
- - - - - - - - - -
1992 Audi 500 SE, type C4, AAR, 335k (2001-current)
1990 VW Fox, type 16, HM, 245k (2005-current)
2004 VW Golf, type 1J, AHF, 231k (2016-current)
Previous:
1978 Audi 100 GLS 5E, type 43, WC (1991-92)
1983 VW Golf GTS, type 17, FR (1992-2005 but still in the family)
- - - - - - - - - -
User avatar
panic-mechanic
Panic's Place
Posts: 25239
Joined: Mon Jul 29, 2002 9:08 am
Membership No: 79
Location: Benoni, putfontein.

Re: Ffz gearbox

Post by panic-mechanic » Mon Apr 23, 2018 8:05 pm

oh well. - to the OP stick it in and see if you like it.
FFZ has a 3.94 diff so for the same 1,2 nd gear it will feel quite a bit lazier
Stephan van Tonder - Jhb - Putfontein Benoni
'07 Audi S6 V10 - beast !!!!!
'05 Audi A6 3.0L TDI Avant
'09 Audi Q5 3l tdi
'95 Audi 90 coupe quattro
'13 VW CC 2l tdi (repair project)
'05 Touareg v10

Perfect Power dealer. I do dyno tuning.
User avatar
PapaJo
Lieutenant-Colonel
Posts: 4645
Joined: Sat Apr 10, 2010 8:01 pm
Car Make: VW
Car Model: '16 Golf 7R, 86 Caddy 16V ITBs
Membership No: missing
Location: Vaal Triangle SA or Vitoria Brazil

Re: Ffz gearbox

Post by PapaJo » Mon Apr 23, 2018 8:32 pm

panic-mechanic wrote:
Mon Apr 23, 2018 8:05 pm
oh well. - to the OP stick it in and see if you like it.
FFZ has a 3.94 diff so for the same 1,2 nd gear it will feel quite a bit lazier
I think it is the other way around, AEN 3.667 would feel lazier as the diff ratio is lower, resulting in longer gears.
User avatar
panic-mechanic
Panic's Place
Posts: 25239
Joined: Mon Jul 29, 2002 9:08 am
Membership No: 79
Location: Benoni, putfontein.

Re: Ffz gearbox

Post by panic-mechanic » Mon Apr 23, 2018 8:35 pm

that is exactly what I said. Put in the AEN it will feel lazier. he had FFZ
Stephan van Tonder - Jhb - Putfontein Benoni
'07 Audi S6 V10 - beast !!!!!
'05 Audi A6 3.0L TDI Avant
'09 Audi Q5 3l tdi
'95 Audi 90 coupe quattro
'13 VW CC 2l tdi (repair project)
'05 Touareg v10

Perfect Power dealer. I do dyno tuning.
Post Reply