C230 M271 w/ Warped Block?
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04' C230 Sport
C230 M271 w/ Warped Block?
Okay, heres my deal for the day. I took the car to my local import shop for the diag of my misfire. Turns out the head gasket was leaking coolant into the #2 cylinder, causing the misfire. So, they took the head off, machined .045" off of it to true it up for install. Then, they measured the block. The block is presenting a .005" warpage!!!! The shop said they had been doubting the "trueness" of the flat bar, and sent it out to be remachined.
So heres my dilema. The C230 (04) has 58k miles on it. Its at an independent right now. If the block is warped, do i take it over to the Dealer for possible warranty consideration? I have seen plenty of warped heads in my life, but NEVER a warped block, especially at such a young age. Its never been overheated.
Any info/advise would be greatly appreciated. I have all the faith in the world in the shop that is working on it...... but a block machine job is going to be BIG money!
:w all:
: smash:
So heres my dilema. The C230 (04) has 58k miles on it. Its at an independent right now. If the block is warped, do i take it over to the Dealer for possible warranty consideration? I have seen plenty of warped heads in my life, but NEVER a warped block, especially at such a young age. Its never been overheated.
Any info/advise would be greatly appreciated. I have all the faith in the world in the shop that is working on it...... but a block machine job is going to be BIG money!
:w all:: smash:
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
I seriously doubt a warped block. Someone dropped the straightedge. What I would believe is an errosion low spot if the head gasket was seriously blown & it had been driven that way.
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From: MD
2007 C230 and 1985 Monte SS
I hope you didn't get screwed here. That will increase your compression ratio, and I dont know about the valve/piston tolerance on these motors stock, but I have heard as low as 0.040" before on some motors.
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04' C230 Sport
First off, let me correct my numbers. The shop thats doing the work sent out the head to the machine shop. Completely independent measurment device here. .0045 is what it should have read.
Second, the DECK is warped, not the block. The frustration is setting in a little.
Second, the DECK is warped, not the block. The frustration is setting in a little.
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Please excuse my ignorance. Terminology varies around the world. What exactly do you mean by the "DECK" is warped?
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From: MD
2007 C230 and 1985 Monte SS
The block surface that mates to the head is the deck. I dont see it being warped, but I agree that there may be some erosion.
Did they tell you how far off the deck is? i.e. how thick of a feeler gauge they can get in there? I'm sure there is a bit of a tolerance that the head gasket can absorb if we are talking in the 0.001" magnitude
Did they tell you how far off the deck is? i.e. how thick of a feeler gauge they can get in there? I'm sure there is a bit of a tolerance that the head gasket can absorb if we are talking in the 0.001" magnitude
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Right - thanks - hence centre of crank to deck height measurement in American speak. So he is trying to say the block is warped.
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Get it re measured by someone else. The next thing they will tell you is that it needs to be line bored.
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Mleskovar - the problem is they pushed the M271 too far for the American market to continue calling it a C230 - in C180 & C200 trim it's a vastly more reliable engine - But bigger blower & a chipped ECU to achieve the extra horses & less than ideal fuel make it fragile.
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
I see Ed lurking at the bottom of my screen & he is probably fed up with me for getting cross with Todd. Yes - The M111 is a far stronger engine at this kind of power output or more.
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2002 C230K, 2013 BMW 328, 2015 BMW X5
Glyn,
No I saw the humor in the banter. I'll never pretend that the M111 isn't a bit of a throwback with regards to sound. But in US trim it is oh so tuneable. At under 2,700 rpm, I can easily get 30mpg or more out of the car. My avg is 26.7. That is because I do a bit of city driving and of course the mileage suffers.
In any case, to the origional poster, my bad. I didn't put you together with your previous thread topics. I would recommend keeping everything together though.
I'm assuming that the head is aluminum and the block is iron? If so, it is the head that would have warpage.
Just my two cents.
E
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Glyn,
No I saw the humor in the banter. I'll never pretend that the M111 isn't a bit of a throwback with regards to sound. But in US trim it is oh so tuneable. At under 2,700 rpm, I can easily get 30mpg or more out of the car. My avg is 26.7. That is because I do a bit of city driving and of course the mileage suffers.
In any case, to the origional poster, my bad. I didn't put you together with your previous thread topics. I would recommend keeping everything together though.
I'm assuming that the head is aluminum and the block is iron? If so, it is the head that would have warpage.
Just my two cents.
E
No I saw the humor in the banter. I'll never pretend that the M111 isn't a bit of a throwback with regards to sound. But in US trim it is oh so tuneable. At under 2,700 rpm, I can easily get 30mpg or more out of the car. My avg is 26.7. That is because I do a bit of city driving and of course the mileage suffers.
In any case, to the origional poster, my bad. I didn't put you together with your previous thread topics. I would recommend keeping everything together though.
I'm assuming that the head is aluminum and the block is iron? If so, it is the head that would have warpage.
Just my two cents.
E
Regarding the block it is cast aluminium with NiCaSil bores like the 6 Cyl engines. Any skimming would have to be undertaken with great care so as not to lift the NiCaSil.
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04' C230 Sport
Well, the verdict is in. Took the flat bar and measured .001 distortion on the top of the deck surface, which is deemed acceptable. Shes going back together.
At the end of the day, I think she still might be going in for a trade. The M271 has taught me my lesson.
At the end of the day, I think she still might be going in for a trade. The M271 has taught me my lesson.
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
.001 is nothing. Correctly torqued that will be fine. A lot of our Honda racing motorcycles with Aluminium alloy crankcases were designed to only pull true at correct torque. Buy a nice V6
