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6 speed gearbox conversion
#1
Hiya
Anyone of you guys did  gearbox conversion from 5 to 6 speed? My van is from my2016 1.6hdi 92bph 5th gear is absolutely to short to drive on motorway so decide to do conversion but first of all want to check it then is easy way..Any help will grateful. Cheers
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#2
Funny, mine is the 1.6 HDi and it sits about 2000 rpm at 70 mph... Never feels strained or low geared in 5th.
My Van: 2012 B9 1.6 HDi Enterprise
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#3
(01-04-2020, 03:45 PM)Zion Wrote:  Funny, mine is the 1.6 HDi and it sits about 2000 rpm at 70 mph... Never feels strained or low geared in 5th.

That is really interesting on mine 2450 rpm is 70 mph bit difference isnt ? So what is your gearbox code ?
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#4
It's a BVM5 and specific code is BVM BE4 L from the factory build sheet. Could be just above 2k at 70 but not by much. I came to this van from a 2010 Audi A3 TDi 2.0 with a 6 speed and didn't notice it suddenly being a screamer. My wife's BMW mini by contrast is really low geared and screams at around 3200 rpm at 70. Drives me nuts if I have to drive it on the motorway.

Have you checked the speed with GPS to see if the Speedo is actually out of calibration? You could be doing nearer 80 lol. My van at an indicated 70 is actually around 67 by GPS indication. It's within the legal calibration limit and better to read slightly low than too high.
My Van: 2012 B9 1.6 HDi Enterprise
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#5
I dont think my 1.6hdi van needs a 6 speed box - certainly at legal speeds anyway
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#6
I don't suppose the OP has low profile tyres on his van which might account for the higher revs at 70?
B9 (2016) 1.6 BlueHDi 100 Multispace XTR = Mine;   B9 (2013) Enterprise 1.6 HDi Van = Hers.
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#7
Nah cos the Speedo would still match the rpm as before, but the actual speed would be wrong to an observer...i.e. GPS. But to the driver it would look the same.

Wait, you could be onto something if the Speedo is taken from the abs sensor reading on one wheel, but not if it comes from the gearbox...
My Van: 2012 B9 1.6 HDi Enterprise
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#8
(02-04-2020, 08:17 AM)polar Wrote:  I dont think my 1.6hdi van needs a 6 speed box - certainly at legal speeds anyway

Me either. Quite calm at 70 actually.
My Van: 2012 B9 1.6 HDi Enterprise
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#9
the later vehicles -100 hdi adblue wagons appear to have the same gear ratio in 5th as the 6 speed does in 6th. Hence why they're supposed to be good on juice.

My previous 65 plate 1.6 hdi 92bhp was higher revving by a long way over my current K9 van 100bhp

My wife has the six speed C4 Picasso grand semi auto box and the revs on that in sixth match the revs on my van in 5th doing the same speed
Previous Berlingo: 2015 1.6 L1850 90ps In Artic Steel inc Look Pack and Lighting Pack.

Current Berlingo: K9 2018 Driver M 100ps in Platinum Grey with Safety Pack
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#10
(01-04-2020, 10:10 PM)Zion Wrote:  It's a BVM5 and specific code is BVM BE4 L from the factory build sheet. Could be just above 2k at 70 but not by much. I came to this van from a 2010 Audi A3 TDi 2.0 with a 6 speed and didn't notice it suddenly being a screamer. My wife's BMW mini by contrast is really low geared and screams at around 3200 rpm at 70. Drives me nuts if I have to drive it on the motorway.

Have you checked the speed with GPS to see if the Speedo is actually out of calibration? You could be doing nearer 80 lol. My van at an indicated 70 is actually around 67 by GPS indication. It's within the legal calibration limit and better to read slightly low than too high.

I did reading today at 70 mph i had 2500 rpm so compare to 2000 rpm it is absolutely mega different ....Today also i seen Peugeot 308 1.6 hdi 120 bhp on gear 6th is around 1800 rpm on 70 mph. So the the MPG will be better as well... Another think 6 speed gearbox have also more stronger clutch . I did already remap and sometimes i can feel sleeping so all together with 6th gearbox can have few benefits
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