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mpg from 20v n/a VIS
#1467898
11/01/2014 18:25
11/01/2014 18:25
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sheep
Unregistered
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sheep
Unregistered
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Im picking up my next coop next saturday, a 98/s 20v VIS, and i have a couple of nice long journeys to do to get the feel for her. It starts with a nice drive from upton upon severn to Bracknell and then a 480 mile round trip from Bracknell to Gravesend to Swansea and back to Bracknell.
Whats the most anyone has got out of a 20v vis on a long motorway journey.
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Re: mpg from 20v n/a VIS
[Re: ]
#1467900
11/01/2014 18:43
11/01/2014 18:43
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F1ANG
Unregistered
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F1ANG
Unregistered
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Are you sure it's a VIS on a 98 s? I'm pretty sure the vis versions of the 20v were all 99 onwards?
I've had over 400 mile to tank on both my old coupe vis and bravo hgt vis taking it real easy. If you can resist the loud pedal and try to keep it under 3000 rpm, there really not too bad.
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Re: mpg from 20v n/a VIS
[Re: ]
#1467907
11/01/2014 19:05
11/01/2014 19:05
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sheep
Unregistered
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sheep
Unregistered
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Its definitely a VIS on a s plate so could be either a 98 or 99. 400 Miles to a tank sounds bloody good just got to resist planting the load pedal.
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Re: mpg from 20v n/a VIS
[Re: ]
#1467933
11/01/2014 20:34
11/01/2014 20:34
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F1ANG
Unregistered
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F1ANG
Unregistered
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Learn something new everyday 
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Re: mpg from 20v n/a VIS
[Re: Gripped]
#1468022
12/01/2014 13:49
12/01/2014 13:49
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sheep
Unregistered
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sheep
Unregistered
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They rev quite high on the motorway Sounds like a 6 speed conversion may be in order.
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Re: mpg from 20v n/a VIS
[Re: ]
#1468024
12/01/2014 14:33
12/01/2014 14:33
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Joined: Aug 2009
Posts: 6,192
Bristol, UK
Hovedan
Forum is my life
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Forum is my life
Joined: Aug 2009
Posts: 6,192
Bristol, UK
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They rev quite high on the motorway They do indeed, for an eco run you'll have to cruise at around 65mph. The loud pedal is a real distraction mind! At 65, you'll get a shade over 400 from a tank. At 80, you'll not see 300. It's a marked change!
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Re: mpg from 20v n/a VIS
[Re: ]
#1468055
12/01/2014 19:38
12/01/2014 19:38
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F1ANG
Unregistered
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F1ANG
Unregistered
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This is something I've thought about a few times. I wonder if there are any 2.0l 20v n/a 6-speed conversions done? Never heard of any, although the 20vt 5 speed conversion has being done to the 2.4 stilo lump in a coupe...
With the 20v and 20vt both sharing the same block, the 6 speed 'in theory' should fit, obviously requiring 20vt hubs, shafts etc....
Now turbo ratios on a 2.0l n/a would be all wrong, making the car slow, as they don't make anyware near the torque the turbo box requires, I wonder if it's possible to strip down a 6-speed gear box, replace gears 1 to 5 with n/a cogs and keep the turbo's 6th gear, purley for eco driving on motorways etc? Just a thought... Has anybody ever tried this or something similar?
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Re: mpg from 20v n/a VIS
[Re: ]
#1468063
12/01/2014 20:42
12/01/2014 20:42
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Joined: Dec 2005
Posts: 3,609
S. Wales. Way beyond my means
Gripped
Club member 1924
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Club member 1924
Forum is my job
Joined: Dec 2005
Posts: 3,609
S. Wales. Way beyond my means
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It's funny. The Coupes I used to see on the motorway (going back a few years) quite often used to be doing 70 or less, while I zoomed past at 80+ leptons in my TDi diesel. It now makes sense.
The Coupe (certainly the NA) is really an A road car.
Last edited by Gripped; 12/01/2014 20:43.
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Re: mpg from 20v n/a VIS
[Re: ]
#1468092
12/01/2014 23:52
12/01/2014 23:52
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Joined: Dec 2008
Posts: 596
Fareham, Hants
Wal_S
Enjoying the ride
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Enjoying the ride
Joined: Dec 2008
Posts: 596
Fareham, Hants
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Best I've got from my VIS was 458 miles, regularly get 35-37 mpg on my weekly 170 mile commute without really trying.
My car btw is a Nov 98 car, there aren't many pre facelift cars but they are certainly about.
If all else fails read the instructions
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Re: mpg from 20v n/a VIS
[Re: barnacle]
#1468093
13/01/2014 00:11
13/01/2014 00:11
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F1ANG
Unregistered
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F1ANG
Unregistered
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Ang, the difference is in the final drive. The ratios are only slightly different.
With the extra torque from Flea's chip on the 16NA I have felt the 16vt final drive would work. Thanks for the input Neil. So do you think if there was a bit more power extracted from the 20v lump, that the 20vt final drive would work ok? Long story cut short, We (me and my dad) had planned to do this, we've got an old p-reg 20v it's sat for a few years, and needs every mortal part replacing, but she's a solid rust free car. We have a 20v vis engine on c&b camshafts that was running 191 bhp in a fiat bravo hgt. The plan was always to strip it down, mate the cams with a re-worked head and put it in the coupe, with full 20vt running gear (hubs, shafts, suspension, brembos etc) and of course the 6 speed box, but we weren't sure how it would perform on that gearbox as it won't quite have the torque of the 2.4 stilo lump. We were hoping with the removal ov the vis system and head work we would crack 200bhp. We accumulated all the parts, but never got around to starting the project, between always tinkering with our 20vt's, working and family matters, it just went on the back burner and has sat ever since. Hopefully we'll get started on it at the back end of this year. But for now we'll be hard saving for the international meet Ps. Apologies for any off topic discussion...
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Re: mpg from 20v n/a VIS
[Re: barnacle]
#1468095
13/01/2014 00:20
13/01/2014 00:20
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sheep
Unregistered
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sheep
Unregistered
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With the extra torque from Flea's chip on the 16NA I have felt the 16vt final drive would work.
Does flea do a chip for the 20v na?
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Re: mpg from 20v n/a VIS
[Re: ]
#1468108
13/01/2014 07:14
13/01/2014 07:14
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Joined: Dec 2008
Posts: 596
Fareham, Hants
Wal_S
Enjoying the ride
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Enjoying the ride
Joined: Dec 2008
Posts: 596
Fareham, Hants
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With the extra torque from Flea's chip on the 16NA I have felt the 16vt final drive would work.
Does flea do a chip for the 20v na? Yes
If all else fails read the instructions
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Re: mpg from 20v n/a VIS
[Re: Wal_S]
#1468121
13/01/2014 10:07
13/01/2014 10:07
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Joined: Sep 2006
Posts: 17,206
FCSS 01684 593187
Countrycruising
Club Rep Europe, member 914
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Club Rep Europe, member 914
Forum veteran
Joined: Sep 2006
Posts: 17,206
FCSS 01684 593187
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With the extra torque from Flea's chip on the 16NA I have felt the 16vt final drive would work.
Does flea do a chip for the 20v na? Yes No Flea doesn't have a chip for the VIS, only a live remap service.
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Re: mpg from 20v n/a VIS
[Re: ]
#1468126
13/01/2014 10:13
13/01/2014 10:13
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F1ANG
Unregistered
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F1ANG
Unregistered
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Yes joe has the 20vt 5 speed, with visco drive etc... Nice set up but he also has the 2.4 so a good bit more torque. I was hoping the additional head work would help with regards to torque, as it's worked wonders on my 20vt. But I fear it just wouldn't be enough on the 2.0L, After all that work and effort I think it Would be better to have a faster, well geared 20v, than a 20v that feels like a slow 20vt if you get me? Just a shame about that 6th cog for economy. Anyway we'll see what happens. I'll start a project thread if and when it happens
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Re: mpg from 20v n/a VIS
[Re: ]
#1468128
13/01/2014 10:24
13/01/2014 10:24
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Joined: Sep 2006
Posts: 17,206
FCSS 01684 593187
Countrycruising
Club Rep Europe, member 914
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Club Rep Europe, member 914
Forum veteran
Joined: Sep 2006
Posts: 17,206
FCSS 01684 593187
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Ang, the difference is in the final drive. The ratios are only slightly different.
With the extra torque from Flea's chip on the 16NA I have felt the 16vt final drive would work. Thanks for the input Neil. So do you think if there was a bit more power extracted from the 20v lump, that the 20vt final drive would work ok? Long story cut short, We (me and my dad) had planned to do this, we've got an old p-reg 20v it's sat for a few years, and needs every mortal part replacing, but she's a solid rust free car. We have a 20v vis engine on c&b camshafts that was running 191 bhp in a fiat bravo hgt. The plan was always to strip it down, mate the cams with a re-worked head and put it in the coupe, with full 20vt running gear (hubs, shafts, suspension, brembos etc) and of course the 6 speed box, but we weren't sure how it would perform on that gearbox as it won't quite have the torque of the 2.4 stilo lump. We were hoping with the removal ov the vis system and head work we would crack 200bhp. We accumulated all the parts, but never got around to starting the project, between always tinkering with our 20vt's, working and family matters, it just went on the back burner and has sat ever since. Hopefully we'll get started on it at the back end of this year. But for now we'll be hard saving for the international meet Ps. Apologies for any off topic discussion... It is possible to bolt on a 5/6sp 20vt gearbox to a standard 2L n/a as long as you also transplant the drive shafts, hubs, brakes etc. I found the ratios excellent for fuel economy but you do loose a little of the bottom end torque. Modifying an n/a with a 2.4 is the way to go, MrsCC's first build was with the standard n/a box but you're running through the gears so fast you're up to 5th before you know it so I fitted a turbo 5sp box which matched well. Final mods have been removal of the variable intake system for the early alloy plenum and 20vt C&B cams, results were awesome making over 200bhp. My experience with these cars and fuel consumption with the n/a is most will return 30+mpg if you're gentle on the pedal, I've had 400+miles from a tank driving like Miss Daisy and less then 200 when driven hard.
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Re: mpg from 20v n/a VIS
[Re: Countrycruising]
#1487209
08/05/2014 10:09
08/05/2014 10:09
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Joined: Oct 2008
Posts: 358
Slovenia
Mrzly_slo
Making a profit
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Making a profit
Joined: Oct 2008
Posts: 358
Slovenia
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When I first got my VIS on 15" standard alloys, it done about 9.5L/100km, then I put on some 17" and I was in the 10l/100km territory. I figured that the thermostat is bad, replaced that (about 90€) and it droped back to 9l/100km. Now I have very heavy(23kg) 18" and its doing on long trips about 9.2-9.5l/100km. If im racing it till 6500rpm its using about 10.5 which is in my opininon ok. But I still need to clean my MAF sensor (or replace it), and throtle body due to the cutouts at low rpm.... Oh...and my temp. are always between 85-90*C.The car heats up in less than 5km.. L/100 km = MPG 9.0 = 26.136 9.5 = 24.760 10.0 = 23.522 10.5 = 22.402 But you have to take in count that this is my hobby car and I don't drive it at low rpm 
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Re: mpg from 20v n/a VIS
[Re: Countrycruising]
#1487768
11/05/2014 16:12
11/05/2014 16:12
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Joined: Oct 2008
Posts: 358
Slovenia
Mrzly_slo
Making a profit
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Making a profit
Joined: Oct 2008
Posts: 358
Slovenia
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The VIS does warm up faster then any other Coupe but I'd check the condition of the rad becasue if it's old it won't be very efficient. The car has only 95.000km on it, original km, it lookes like a 5 year old car , including the rad...
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