OT: v6 what's the point!

That was my general impression, having heard some good stuff here I've changed my ever so slightly ignorant opinion somewhat but can't help feeling that v6's being compared to I6's is apples and oranges at the best of times. The new technology in both material and design on the new generation of v6's can't really be compared objectively can it?

In news:WUUJc.485$ snipped-for-privacy@newsfe6-gui.ntli.net, AstraVanMan decided to enlighten our sheltered souls with a rant as follows

Carlton was auto, because the manual box is utter s**te in them. Alfa was the 4wd LHD only Q4.

All the Alfa 164s I've owned have been good on fuel, whether V6 or Twin Spark. I'd say the 2.0 gets on average around 29 mpg, 35 on a run, 27ish in town. V6 12v gets 24ish in town, 35 ish on a run, averages with me driving about 27 mpg. Auto GSi 24v (3.0) gets 20 ish in town, 28ish on a run, 'bout

23mpg average.

GSi 24v Auto with bigger pistons and Lotus crank (heh) got around 18 in town, 28ish on a run... but it was a 4.0...

You are missing the point, its still a straight 6 engine even if it is a recasted block.

In that case, then a BMW E30 316i is capable of making over 1500bhp. You just change the block and bolt on a turbo.

What a f****it.

Its not ludicrous at all, both engines are very similar they have the same stats with the exception of the engine sizes and of course one is v6 the other is straight 6. They both have metal work/aerodynamics designed for acceleration and high end speed.

Same manufacturer, so explain why its so *LUDICROUS* and yes the are completely different cars............... one is a skyline the other is a

300zx.......

One was designed as a techno toy for Jap racers - it's sole purpose it to produce huge amounts of power.

The other is a proper Sportscar.

They have different gearboxes and the Skyline has 4wd, it's bound to be quicker in a 0-60!

In news: snipped-for-privacy@uni-berlin.de, Homer decided to enlighten our sheltered souls with a rant as follows

.> They have different gearboxes and the Skyline has 4wd, it's bound to

not necessarily. The old Sierra XR4i was quicker 0-60 than the Sierra XR4x4.. The 2wd Sapphire Cosworth was always quicker to 60 than the 4x4 one as well...

woot? gsi manual box was lovely.....

Lovely?

Only if you think slow, obtrusive, noisy gearboxes with crap shift actions are lovely.

I drove more than a few GSi 24v Carltons when they were brand new and the gearboxes were crap in them then as well. When I bought my GSi I tried a few more to see if they were as bad as I remembered them being. They were, so I bought the auto instead.

I agree with those examples but when comparing higher powered turbocharged cars it gets much harder to get a good start with only 2wd, with 4wd you can spool the turbo up then just drop the clutch at higher revs (not advisable if you can't afford to replace the clutch or transmission at some point ;-) ). I wonder what would happen if you had a 2wd and a 4wd Sierra Cosworth with 300bhp each, would the 2wd still get to 60 quicker?

You've just accurately described a factory-fresh Alfa 75 'box ;-)

Are these all alloy blocks or all iron blocks or is it a mix of cast iron / steel and alloy?

No doubt out of a 4wd GTS-4, looks like they weighed it with the front diff and the whole gearbox. The diff is built into the sump casting. Extra front and middle diff with drive shaft for 4wd makes about 80Kg difference between Skyline GTS-t and GTS-4. Gearbox should be about

50Kg. So it's down to about 190Kg. SXOC forum says that with a normal sump and RWD gearbox they weigh about 65Kg more than a CA18DET = 193Kg.

Old Heavy Cast Iron L18 - 118 kg 260 lbs 70's, early 80's Bluebird Single cam, 8v inline, not x-flow, carb CA18ET_ - 118 kg 260 lbs Silvia, Bluebird, x-flow. CA18DET - 128 kg 282 lbs 200SX 89-94

Modern light weight alloy (hmm 20kg heavier). SR20DE -- 139 kg 306 lbs lots of 90's 2.0L petrol Nissans, SR20DET - 149 kg 328 lbs 200Sx 94-98

Turbo's weigh about 10kg's the DET has one, DETT has 2 so maybe 220Kg tops for the RB26DETT in a GT-R but 320Kg is a piss take.

D - DOHC 4 valve/cyclinder E - Efi T - turbo

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That's utter s**te. On most 4WDs it will either burn out the clutch or possibly shred the gearbox. On a 2WD it's not so bad, you get some wheelspin which saves the transmission from damage. On a 4Wd too much grip for that so you break something.

Not true. It's the best way to get a fast launch in a Scooby or similar, and the main reason not to buy an ex press demo car.

How to make sure you kill the undersized R160 diffs on Scoobies. They can't take the power of a tuned motor or any abuse. Gets expensive when you have to replace two.

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the main reason not to buy an ex press demo car

Very close. You don't change the block, just change the head and internals.

Right make, wrong engine. Sorry your small block is not up to to being bored out and then short stroked to run at 11000rpm and 42psi (I had thought it was 60). It will have to keep the stock bore for strength and just be short stroked so it will lose some capacity. Would you settle for 1200cc with 1000bhp at 14000rpm and 45psi on that small block? Be OK with a 250 miles rebuild interval?

As the 1600 wasn't up to F1 racing BMW just fitted a DOHC race head on the 4 cylinder 2.0L PRODUCTION block from the late 60's 2002. Called it the M13. Left the bore standard (maybe sleeved it), reduced the stroke to get 1500cc and reved it to 11000rpm. It ran in the Brabham BMW F1 turbo and for the BT55 put the dyno off scale at over 1280bhp. The short life, 10-15min use before rebuild, power at any cost qualifying engines are reported to have made around 1400bhp. They turned them down a bit for the 2hr races so rebuilds could be done at

300mile intervals (no interim service required).

paragraph after BT55 formula 1 with shattering power

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Not utter s**te, have you never been to a quarter mile drag strip and seen some 4wd Sunnys, Skylines, Evos etc launch off the line? I also said "not advisable if you can't afford to replace the clutch or transmission at some point" but you seem to have ignored and snipped that part.