Euro M110 head&cams vs US M110 Head&cams

[79Mercy]

Im going to have the head redone on my 79 280CE sometime in the near future as it think there is a small head gasket issue.

I know i want to find a set of euro M110 camshafts as they are different from the US cams.

But is the head that much different between the US and Euro motors?

How much HP gain do you think would be seen by putting Euro cams in a US head and cam box?

Thanks

Stewart

[panZZer]

A euro m110 with bosch k jetronic is 175 hp, I had one but 1 cylinder was dead.

[79Mercy]

The euro m110 has 185 hp but I know the compression is higher. The pistons are different and the cams are different but I'm wondering if the actual head is different to explain the added hp

[mercmad6.3]

Same head but the pistons are flat.Us versions had mild cams and low compression to keep combustion temps down and thus lower NOx emissions. if you get some Euro cams ( look in ebay.de,ebay.uk and South Africa for the W126 version of the engine) you will have to increase the compression. The Over lap in the cam profiles lowers the dynamic compression ratio ,which means that if you simply bolt on a pair of euro cam you will lose power ,not gain it.

[t walgamuth]

the euro pistons bought new are a couple thousand IIRC. the exhaust manifolds are also different. I don't know about differences in the injection set up. The euro engine requires premium too. Its really sweet though, smooth and powerful.

[mercmad6.3]

Actually there are pile of different exhaust manifolds for M110's in both left and right hand drive versions. The USA with that big pot thing,would have to the worst and the reason they don't develop much Horsepower. AMG made a kit for them in the pre Daimler days. I have no idea what the grinds were but a friend has a AMG W107 280SL with the stage one engine kit. it hasn't been out of storage for years so i cant get to it to have a look.

[mbdoc]

The last series of Euro M110's were completely different from earlier versions & USA versions.

Heads, cams, pistons, intake, & exhaust were superior to earlier Euro versions & 2 times better than USA cars!

I auto crossed a 1982 280E Euro for 4 years, had over 185HP at the rear wheels on Dyno.

Find one of those engines & the change will be worthwhile!

[TheDon]

Stuart, there is a euro M110 at the junk yard by me. The engine should still be there.

[79Mercy]

How much compression does a euro spec m110 have. I checked mine and I have 150psi +/- 5 psi in all cylinders.

So it is believed that if I put euro cams in my motor I will loss power. I'm not taking apart the bottom end of the motor, I wanna try and get as much power from the top end as possible. Thanks!

[mercmad6.3]

I will look uop the exact ratios in the WIS when i get a free moment. The figure you posted is just the static compression 'pressure' . Not the ratio per se. On the regular M110's the pressure is usually around 180PSi.

[t walgamuth]

The euro motors are listed in my book as being from nine to nine point five compression. Your 150 does not sound too bad.

[mbdoc]

A low compression (USA version) M110 motor with EURO cams would be a waste of time & money!

[JimFreeh]

Originally Posted by mbdoc

The last series of Euro M110's were completely different from earlier versions & USA versions.

Heads, cams, pistons, intake, & exhaust were superior to earlier Euro versions & 2 times better than USA cars!

I auto crossed a 1982 280E Euro for 4 years, had over 185HP at the rear wheels on Dyno.

Find one of those engines & the change will be worthwhile!

X2!

I currently have a euro 84 280SL, and have had a couple of euro 280E sedans. The late euro M110 is a blast to drive, unlike the dogs they sent to the USA.

Jim

[Dr. Sternschnuppe]

All M110 cylinder heads has no difference between USA- and Europe-version.

The cylinder heads differences depend on a year of the production.

Bearing bodies differences depend on a year of the production: up to April 1977 (two versions) and from May 1977.

M110 camshafts differences depend on a year of the production and from national version (USA, J, AUS, etc.).
===============================
All versions of the M110.984 has identical intake valves timing.
110.984 US (MY1980-81) and ECE has different outtakes valves timing.
110.984 US (MY1977-79) and ECE has identical timing for all valves.


Salut!

[mbdoc]

Incorrect!