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20VT 6 Speed Gearbox Swap
#1453479
16/10/2013 00:21
16/10/2013 00:21
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Todger182
Unregistered
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Todger182
Unregistered
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I don't know a massive amount about these cars, but give me a fiat fire and super fire engine and I basically know all the ins and outs of them inc gearboxes.
These are a new game for me so i'll try not to be testing.
My coupe currently has the later 5 speed gearbox, and i'm thinking along the similar lines of the fire engines here. But does the 6 speed allow for better economy as well as slightly raised top speed, or is it still placing the rev ranges at 70mph moderately high?
Thanks
X
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Re: 20VT 6 Speed Gearbox Swap
[Re: ]
#1453499
16/10/2013 09:25
16/10/2013 09:25
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F1ANG
Unregistered
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F1ANG
Unregistered
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Adding the 6 makes a huge difference mate! I went from getting 390 to a tank to low 500's taking it real easy, 70mph is around 2.5/2.6 k revs on the six speed, and sitting at 50/60mph on b-roads also makes a huge economy difference there too, if you have a late 5 speed, it's basically a streight swap. However same as with the centos... you do get slightly reduced steering lock! Best mod by a country mile I've put on my car! And always nice having an extra cog to play with
Last edited by F1ANG; 16/10/2013 09:30.
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Re: 20VT 6 Speed Gearbox Swap
[Re: ]
#1453516
16/10/2013 10:59
16/10/2013 10:59
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Joined: Apr 2011
Posts: 360 England, Devon
lost55
Club member 2057
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Club member 2057
Making a profit
Joined: Apr 2011
Posts: 360
England, Devon
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Adding the 6 makes a huge difference mate! However same as with the centos... you do get slightly reduced steering lock!
Why the change in steering lock? Are the drive shafts different?
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Re: 20VT 6 Speed Gearbox Swap
[Re: Nigel]
#1453563
16/10/2013 16:40
16/10/2013 16:40
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F1ANG
Unregistered
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F1ANG
Unregistered
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I have a feeling that a Plus / LE / VT6 has a slightly wider turning circle than a five-speed Coupe, as the rack is changed to cater for the wider gearbox. However, I had a 6 speed box fitted to my old Sprinty and didn't suffer any loss of steering lock
Pretty sure its a straight replacement for any 5 speed 20VT with the later type gearchange.
Can also be fitted to early-type 20vts, but it will need the gearchange mechanism, cables and lever as well Was your old sprinty an early or late 5 speed? I wasn't aware that LE / plus and 6's had a different rack. My porto is a late 5, and im positive it has reduced lock since I had the 6 fitted?
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Re: 20VT 6 Speed Gearbox Swap
[Re: ]
#1453600
16/10/2013 23:08
16/10/2013 23:08
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Todger182
Unregistered
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Todger182
Unregistered
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Interesting, I may debate on doing this one in the near future then.
Thanks
X
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Re: 20VT 6 Speed Gearbox Swap
[Re: ]
#1454136
20/10/2013 05:44
20/10/2013 05:44
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Joined: Dec 2005
Posts: 1,574 Glasgow,Near Florence..If only...
paul
My life on the forum
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My life on the forum
Joined: Dec 2005
Posts: 1,574
Glasgow,Near Florence..If only...
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I also had that problem........ Might sound strange , but in trying to find out what was causing it .............it sorted itself ,and that was over 12 years ago ,box been in and out several times , and now had a totally different rebuilt box fitted last year ,problem has never appeared again ! But when I think about it ,they developed the first 'short shift' on my car at the same time so it was maybe that ,that was the cause of my problem ( Barbz did the work when he worked for Barry )
was Paul S,now just paul...Member since Oct 2000,Coupe may be FATALLY injured - :(oh no it's not
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Re: 20VT 6 Speed Gearbox Swap
[Re: ]
#1454360
21/10/2013 12:07
21/10/2013 12:07
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Joined: Jan 2006
Posts: 3,034 Sweden
Per
I need some sleep
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I need some sleep
Joined: Jan 2006
Posts: 3,034
Sweden
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At the end of the day, it seems it's not actually a fully "straight swap".. Seems the reverse-stop/lock on a sixspeeder is slightly different (or my gearlever is VERY worn?) so - you need to grind the gearstick a mm or so, for it to move sideways far enough. So after a little grinding and greasing everything felt as std (and new, as my new box only done 40000km's, instead of my Coupe's 260000km's). And motorway revs are down with 500rpm, very nice. Finally, after a weekends work I could swap the Richbrook knob top! We had to lower the subframe slightly as a LHD Coupe has the brakebooster on the left side.. Ouch. Also the AC pipes were in grave danger but we found we could loosen the AC filter assembly and move the two pipes up and out of the way enough. Oh, and the plastic protection panel in the left wheel arch had to be cut somewhat too to not foul the end of the box.
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Re: 20VT 6 Speed Gearbox Swap
[Re: ]
#1454452
21/10/2013 20:26
21/10/2013 20:26
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Joined: Dec 2005
Posts: 1,574 Glasgow,Near Florence..If only...
paul
My life on the forum
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My life on the forum
Joined: Dec 2005
Posts: 1,574
Glasgow,Near Florence..If only...
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Well done Per a mod well worth doing -- less noise ,less fuel used, less wear and rear, and another gear to play with too , glad you sorted it out
was Paul S,now just paul...Member since Oct 2000,Coupe may be FATALLY injured - :(oh no it's not
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Re: 20VT 6 Speed Gearbox Swap
[Re: ]
#1454463
21/10/2013 21:46
21/10/2013 21:46
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Joined: Jan 2006
Posts: 3,034 Sweden
Per
I need some sleep
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I need some sleep
Joined: Jan 2006
Posts: 3,034
Sweden
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thanks! Yeah it feels fantastic and almost surreal to have this extra gear. (bad news were my inner CV joint rubbers were completely shot..) This looks like a thread hijack, but I hope my experiences from this weekend helps Todger!
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Re: 20VT 6 Speed Gearbox Swap
[Re: ]
#1480669
25/03/2014 18:17
25/03/2014 18:17
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swiftpete
Unregistered
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swiftpete
Unregistered
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This is something I'd be interested in doing. How much did the 6 speed box run you then?
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Re: 20VT 6 Speed Gearbox Swap
[Re: ]
#1480720
25/03/2014 23:29
25/03/2014 23:29
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swiftpete
Unregistered
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swiftpete
Unregistered
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Ask your friend if he's got another one won't you...?!
Last edited by swiftpete; 25/03/2014 23:29.
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Re: 20VT 6 Speed Gearbox Swap
[Re: ]
#1480934
27/03/2014 09:12
27/03/2014 09:12
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Craig1989
Unregistered
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Craig1989
Unregistered
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Is the 6 speed box capable of taking higher powered coupes just as well as the 5?
Something i would like to do, as much as i love the second-third gear run with the 5 speeder; 10-110 in one gear change, being a daily drive i could do with the lower fuel consumption.
How much do 6speeders usually go for in the UK with the linkage?
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Re: 20VT 6 Speed Gearbox Swap
[Re: ]
#1549169
12/09/2015 00:54
12/09/2015 00:54
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Todger182
Unregistered
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Todger182
Unregistered
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Having finally done my 6 speed conversion, I seem to have lost 5th and 6th.
I have the later gearstick setup and an LE box.
Are they the same as the seicento's in that there is an adjuster in the cable?
Thanks
X
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Re: 20VT 6 Speed Gearbox Swap
[Re: ]
#1549206
12/09/2015 17:56
12/09/2015 17:56
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Todger182
Unregistered
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Todger182
Unregistered
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Found it, will adjust shortly.
Couple of small things to address but all seems good.
One thing I do want to check though, the clutch pedal feels like I'm pressing nothing at all, and engages almost instantly when raising your foot.
Is that normal after a clutch change on these?
Thanks
X
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Re: 20VT 6 Speed Gearbox Swap
[Re: ]
#1549355
14/09/2015 09:40
14/09/2015 09:40
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Joined: Oct 2010
Posts: 549 Bulgaria
Ferrarist
Enjoying the ride
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Enjoying the ride
Joined: Oct 2010
Posts: 549
Bulgaria
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and engages almost instantly when raising your foot.
Is that normal after a clutch change on these?
Thanks
X Yes, it's OK......
20VT - Alfa 156 2.0 - Alfa 156 Mid-Engined RWD - Locost 20VT
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Re: 20VT 6 Speed Gearbox Swap
[Re: ]
#1549406
14/09/2015 17:36
14/09/2015 17:36
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Todger182
Unregistered
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Todger182
Unregistered
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Only asking as before it used to bite halfway up the pedal, now it's about a quarter of the way up.
Lost count how many times I've nearly stalled it.
Thanks
X
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