Whats with the IS and sport?
Moderator: martauto
S42, hardly tuned from stock is it?
With an M20 there is 15+ bhp to be gained from this alone.
So really your implying that the M42 has far better designed parts out of the box than an M20
I'm sure the M42 would get 90bhp increases too if it had more old fashioned parts on it from the factory
A turbo'd M42 is capable of 500bhp even on a stock crank and pistons afaik
Alot more than 300bhp can be got out of an S42 too, but they have more in common with an S50 than an M42 so thats a different argument for another day
M42 rightness above 6500rpm, nobody can hear you scream
bss325i wrote:
You were talking about tuning.....well thats tuning.
M20 is a bit of an old anchor though. For the size the m42 is the better engine.....
Still an M42 at heart though.S42, hardly tuned from stock is it?
You were talking about tuning.....well thats tuning.M20 is a bit of an old anchor though. For the size the m42 is the better engine.....
24v tech2
Yes thats undeniable! The M42 is a better designed engine. I just said an STOCK M20 is more tunable than a STOCK M42.Dave_M3 wrote:So really your implying that the M42 has far better designed parts out of the box than an M20
Its not tuned from stock, its built from scratch.hammoj28 wrote:bss325i wrote:Still an M42 at heart though.S42, hardly tuned from stock is it?
hammoj28 wrote:bss325i wrote:Still an M42 at heart though.S42, hardly tuned from stock is it?
M20 is a bit of an old anchor though. For the size the m42 is the better engine.....
Ahh, but the only thing thats kinda similar is the exterior of the block and head. We'll let them have this one.
But in saying that though....
I've never heard of an S20
M42 rightness above 6500rpm, nobody can hear you scream
No, but i was talking about tuning way before you stuck in the "stock" bit. Its an M42 block therefore its an m42 at heart. Tuning is tuning if you ask me and thats a highly tuned m42 in my eyes.
24v tech2
I personaly think the is engine is great. Im just stating the facts.
bodger wrote:
Wouldn't be financially viable for them to produce a 4 pot with that power for the road i expect. Was probably much easier to use the 3.2, but the 3.2 is much more advanced than the old m20. It has the right number of cams for a start. Much better design.if the 4 pots are better why did bmw use a 6 pot in e36 m3s
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rebelcruiser
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a 6 pot is much cheaper to tune up.
not much difference between e30 325 and e36 325 in powerDave_M3 wrote:The E36 M3s actually have proper 6 pots though that give out decent power for the engine sizeif the 4 pots are better why did bmw use a 6 pot in e36 m3s
At the end of the day it all depends on what you want from an E30. People like different things, thats only naturall. Prime example is what i posted about five pages back about my mate buying a 320is and now thinks he should have bought a 325i sport as its more suitable for his needs. Blood great car though!
Last edited by bss325i on Wed Dec 19, 2007 7:17 pm, edited 1 time in total.
therefore 6 pot is betterhammoj28 wrote:bodger wrote:Wouldn't be financially viable for them to produce a 4 pot with that power for the road i expect. Was probably much easier to use the 3.2, but the 3.2 is much more advanced than the old m20. It has the right number of cams for a start. Much better design.if the 4 pots are better why did bmw use a 6 pot in e36 m3s
not much difference between e30 325 and e36 325 in power
20bhp...
190bhp seems to be a great achievement in tuning the M20 abit.
But anyway, it's torque ye like in the 6pots
A late M50 b25 engine with the vanos has alot more everyday power than an M20 in that respect I reckon
M42 rightness above 6500rpm, nobody can hear you scream
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Simon13
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ah the junior demlot appears.....maxfield wrote:Makes it a much better engine than a M20...
Also with it weighing less, it makes the car handle better.
4 valves doesn't mean it's better. Everyone thinks it is but when you look alot closer to the subject it's swings and roundabouts.
M20 was designed in the early 70's and a good one is a very tough engine. It's old and thats all thats wrong with it. Very good for what it is and the 2.7 makes a lovely engine. Nice simple engine too, try timing an M42 up properly it's so easy to f**k it up.
M42? again good one is ok and they have very good low mid torque for the capacity due to the inlet design, but they won't put up with the simple brutal abuse an M20 will. They are expensive to fix also. If you want 16v 4 pot an S14 is the only way to go imo. S14 us probably the toughest bmw engine made so far they are animals and it takes alot of misabuse to wear/kill one! I know M42's made good race engines after the S14 but they cost alot more to tune as parts and knowledge are scarce. M20 is the most tuned bmw engine ever really
That pretty much sums it up...Simon13 wrote:ah the junior demlot appears.....maxfield wrote:Makes it a much better engine than a M20...
Also with it weighing less, it makes the car handle better.
4 valves doesn't mean it's better. Everyone thinks it is but when you look alot closer to the subject it's swings and roundabouts.
M20 was designed in the early 70's and a good one is a very tough engine. It's old and thats all thats wrong with it. Very good for what it is and the 2.7 makes a lovely engine. Nice simple engine too, try timing an M42 up properly it's so easy to f**k it up.
M42? again good one is ok and they have very good low mid torque for the capacity due to the inlet design, but they won't put up with the simple brutal abuse an M20 will. They are expensive to fix also. If you want 16v 4 pot an S14 is the only way to go imo. S14 us probably the toughest bmw engine made so far they are animals and it takes alot of misabuse to wear/kill one! I know M42's made good race engines after the S14 but they cost alot more to tune as parts and knowledge are scarce. M20 is the most tuned bmw engine ever really
Apart from the Demlot comment
Why is 4 valves not better though?
Lol, Simon you had to bring the s14 in didn't you. Yeh, it is a bloody amazing engine, and they sound brilliant too. I cannot wait to have one in my life and i think about it every day!lol
This arguments for the m42 and the m20. Technology wise and power per litre then the M42 is the better engine but its going to be, its a much better design and twin cam 16v 4 pot is a great idea. .....s14.lol
But, when you say the m42 is weak? Im sure iv heard more stories about cracked heads and gaskets on b25's than i have about m42's.
I shouldn't really say that, will prob go out tommorro and my m42 will be buggered.lol. Karma eh.
This arguments for the m42 and the m20. Technology wise and power per litre then the M42 is the better engine but its going to be, its a much better design and twin cam 16v 4 pot is a great idea. .....s14.lol
But, when you say the m42 is weak? Im sure iv heard more stories about cracked heads and gaskets on b25's than i have about m42's.
I shouldn't really say that, will prob go out tommorro and my m42 will be buggered.lol. Karma eh.
Last edited by hammoj28 on Wed Dec 19, 2007 7:31 pm, edited 1 time in total.
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e30bmlover
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what a day... my arched nemesis sticking up for the m20's! whatever next?
Single cam engines can be more torquey in cases, but obviously they really loose out in top end.Why is 4 valves not better though?
Wouldn't be financially viable for them to produce a 4 pot with that power for the road i expect. Was probably much easier to use the 3.2,[/color] but the 3.2 is much more advanced than the old m20. It has the right number of cams for a start. Much better design.therefore 6 pot is better
Ya, 6 pots are better for heavy E36s were the engine sits way further back behind the front axle like where a 4 pot sits in an E30.
I think Simon13 has sumed it up well too.
M42 rightness above 6500rpm, nobody can hear you scream
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e30bmlover
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smooth, juicy boat anchors..... but they still have a place in my heart, after all my motor is a 320!hammoj28 wrote:Cmon, surely we can get 11 pages. Right! 320's......lol
What has Dannyboy started
But to sum it all up...
The S14 is King amoung the E30 engines for it's engineering
The M42 isn't too far behind and is a very good engine for its size
The M20 is just a boat anchor that is as old as the fields but is handy when you want abit of torque to just potter up and down motorways
The 325i-sport comands a premium because it's hard to find a good one these days that hasn't rust etc and has all the nice bits that you could want in an E30.
The 320iS is the wolf in sheeps clothing that would probably be the pick of the bunch if it was RHD.
and the 318iS is the best all rounder
But to sum it all up...
The S14 is King amoung the E30 engines for it's engineering
The M42 isn't too far behind and is a very good engine for its size
The M20 is just a boat anchor that is as old as the fields but is handy when you want abit of torque to just potter up and down motorways
The 325i-sport comands a premium because it's hard to find a good one these days that hasn't rust etc and has all the nice bits that you could want in an E30.
The 320iS is the wolf in sheeps clothing that would probably be the pick of the bunch if it was RHD.
and the 318iS is the best all rounder
M42 rightness above 6500rpm, nobody can hear you scream