What have you done to your car today?
- Thread starter mattyprice4004
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See mine is only 55ltr so not as big as E46.
24mpg is not bad at all tbf, I'm getting 23.6 right now over the last 2k.
I'm considering z4m with same engine in the future.
Did 350 keep up?
I'm getting 27mpg average without trying.
The other day I got 36mpg on a 150mile A road drive up to North Norfolk - I wasn't even shooting for fuel efficiency either, I just fancied driving fairly sedately because the girlfriend and the parents were in the car. If I was looking for fuel consumption, I bet I could hit nearly 40mpg on a motorway run.
I too am stunned by the S54's fuel consumption, considering mine is on 119k miles, the engine is a 18-19 year old design and was built before fuel consumption/emissions was as big as it is today. It kinda makes you think that the leaps forward in efficiency may not be as big as manufacturers make out.
Soldato
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Got 39.1mpg (calculated) out of my old '93 E220 a while back – mostly motorway. Was similarly impressed. Not bad for an old NA four-cylinder petrol in a big car.
And then you get non performance orientated 6cyl cars of around the same era with smaller engines like the IS200 that get pretty poor economy even when driving normally.
Makes you wonder what BMW could do if they continued to do what they did so well with their N/A engines instead of being forced into turbo charging for a quicker route into lower emissions and slightly higher economy figures.
Makes you wonder what BMW could do if they continued to do what they did so well with their N/A engines instead of being forced into turbo charging for a quicker route into lower emissions and slightly higher economy figures.
Caporegime
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The 6 cylinder in the IS200 was ancient when it was put in the car. A 6 cylinder of the same generation of the E46 would be the 2JZ. Most likely the best straight six ever made.
There are several NA 2JZ variants (such as the one in the IS300, the 2JZ GE - which also happens to be available in the Supra too....and the Crown, Chaser, Cresta, GS300, Soarer, etc etc). As Adam said, the i6 in the IS200 was pretty ancient when it was used in that car as well, which could explain the slightly poorer economy - though its not that bad!
EDIT: The 1G-FE from the IS200 was first introduced in 88...pretty ancient indeed!
Man of Honour
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And the GE/FE blocks are largely quite different to the GTE variants of the 2JZ (No where near as capable IIRC)
Man of Honour
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No under piston oil squirters on the GE blocks, oil ports are slightly different (GE has no provisions for the feeds/returns for the turbos) rods and crank I believe are slightly weaker too
Caporegime
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I never said it was. Fact is they had to go V8 in the E90 because they were running out of headroom with the 6 cylinder to keep up with the opposition. EU emissions or not there is only so far you can push an engine before it becomes un-drivable and unreliable. Take a look at the new civic type-r. Say EU legislation didn't exist and it was to have a N/A engine. For them to get 300bhp it would need an engine that would need to be revved to 10k+ would be a pain to live with and drink petrol like it is going out of fashion. The same would apply for BMW trying to get M4 power levels from a N/A straight six.
Soldato
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Drove it home from work in the rain. Probably only the second time i've driven it in the rain, and boy does it wheelspin easily 
What does? My Z4 spins it's tyres any chance it gets. Not difficult to drive it in wet but TC light might get burned out if it continues raining like this lol.Drove it home from work in the rain. Probably only the second time i've driven it in the rain, and boy does it wheelspin easily
Not really, 2JZ is e36 era, has just as poor fuel consumption as the 1G. It's not fitted in Crown/Chaser/Cresta/Soarer either, those cars had 1JZ. In all honesty the NA 2JZ is a mediocre engine, torque band is narrow and fuel consumption is dire, the BMW motors are far better. What the JZ engines have going for them is they can take a big turbo comfortably.
Soldato
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BMW 340i
That's not quite the same though with the S54. Whilst stock power is 343BHP, racers get them to nearly 400 BHP after replacing pistons, camshafts, exhaust systems and the like. All very expensive parts, but it can be done. I believe Gibbo's was even 390 odd, and that's a perfectly usable road car as well with a stock exhaust and other bits still stock.
The rest of us 99% folks would probably be better off buying the V8 powered car for that kind of money, probably have change left over?
There are race engine builders in the USA that rebuild the S54 specifically for that purpose, and those produce ~435BHP. Again, extremely expensive, and also not for the road (VANOS is removed, for example). That just gives you an idea of how much headroom is available on the S54 block for tuning potential without having to force feed it. But if you did install a bolt on ESS sc kit, then you'd be getting well over 500BHP instantly...
The S65 was always going to be, the E92 is some 200KG heavier, and it's larger all round, so totally not suited to the S54.
Edit* Words!
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Afraid you're wrong there. 2JZ is (or rather was) indeed available in all of those, plus the Supra and a few others. All the ones you have quoted were also available with the 1JZ, so you aren't wrong there, and the 2JZ is indeed also pretty old, coming in in '91 iirc.
- Perhaps that's where I got confused.