Any way to tell a 3.0 vs a 3.5L motor?
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Joined: Oct 2010
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From: South Jersey
08 C300 Sport
I've looked through lots of photos, and it seems that there is no visible difference between the two motors. I didn't expect there to be considering the .5L displacement difference is all internally achieved anyway. The motors are both the same physical outside size as well, so engine bay spacing is the same for either one.
I guess the true test would be to send out my ECU for a flash and see what they find out, if anything.
I'll just enjoy that my car has some get up to it. But if anyone has any leads to proper motor ID'ing, I'm all ears
EDIT:
Well- I'm glad I didn't stop my search. Seems that you'll find a part number located on the motor where the trans mounts to the back of the motor. If you're looking up at the motor it'll be stamped directly underneath. How valid this is, I'm not sure. But here's a picture for proof. This is a 3.0L motor. I wonder what the 3.5s might be.
This picture is from a junk yard shot, and I"m not sure how true the number is, but it's definitely on other parts of the engine in other shots as well. This is a good starting point if anything. They identified this motor as part # 272947. Maybe 3.0L motors have a 272 prefix.
I can't find anything on the 3.5 from the seller and I don't have the ability to get under my car right now lol
It's a good start though!
I guess the true test would be to send out my ECU for a flash and see what they find out, if anything.
I'll just enjoy that my car has some get up to it. But if anyone has any leads to proper motor ID'ing, I'm all ears
EDIT:
Well- I'm glad I didn't stop my search. Seems that you'll find a part number located on the motor where the trans mounts to the back of the motor. If you're looking up at the motor it'll be stamped directly underneath. How valid this is, I'm not sure. But here's a picture for proof. This is a 3.0L motor. I wonder what the 3.5s might be.
This picture is from a junk yard shot, and I"m not sure how true the number is, but it's definitely on other parts of the engine in other shots as well. This is a good starting point if anything. They identified this motor as part # 272947. Maybe 3.0L motors have a 272 prefix.
I can't find anything on the 3.5 from the seller and I don't have the ability to get under my car right now lol
It's a good start though!
Last edited by 08SEA300; Dec 5, 2010 at 11:01 PM.
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C55 AMG, BMW 535i, Mazda Cx-7, Nissan 240sx
