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3.0 or 2.5
How do I go about figuring out if I have a 3.0l or a 2.5l?
I got the car from my uncle. It has a new engine, he says it is a 3.0, but it still has the 2.5's plenum. Is there any sure fire way to figure it out?
Thanks!
Carson
I got the car from my uncle. It has a new engine, he says it is a 3.0, but it still has the 2.5's plenum. Is there any sure fire way to figure it out?
Thanks!
Carson
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Carson,
Here's a link on how to check what's on the cylinder head. There's one on the rear of the RH head. It's also on the block behind the starter motor but that's a bit hard to see. It will either show 2.5 or 3.0.
The 3.0L head also has a smaller 2 S mark on it which does look a bit like 2.5
http://www.alfagtv6.com/bb/viewtopic.ph ... highlight=
David
Here's a link on how to check what's on the cylinder head. There's one on the rear of the RH head. It's also on the block behind the starter motor but that's a bit hard to see. It will either show 2.5 or 3.0.
The 3.0L head also has a smaller 2 S mark on it which does look a bit like 2.5
http://www.alfagtv6.com/bb/viewtopic.ph ... highlight=
David
1985 GTV6 3.0 Zender Body Kit - Red
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Here's a picture of the casting on the back of the right hand head (next to the firewall). It's not nearly as clear as the one from the link, but its still easy to see. Am I right in assuming that the 2.5 head will not fit on a 3.0 block so this is for sure a 2.5l engine?
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No way really? somewhere else I read the 2.5 exhaust valve/port flows better than 3.0 one do. I have a pair of 2.5 heads but dont have 3.0 ones to compare with. Any idea what the difference in chamber volumes are?
-Tom P.
-Tom P.
zambon wrote:I think if you put a 2.5 head on a 3l block you end up getting over 12 to 1 compression. Therefore it is safe to assume that you have a 2.5 engine. (Unless you are running race fuel).
I know it's a bit old topic but it kept me really bothering, to check whether I have stock 2,5 or not. The only thing I found on the right head was "3" "D" and fishlike-symbol all this inside rectangular frame. Same thing for the left head except that "D" was replaced with "S". All markings (4 in total) were found below the pulleys and against the firewall. The marking on third spot, on the block, in the starter motor area (1st cylinder), seems to have been deliberately damaged. By the way engine has stock plenum, and valve covers. With this information on hand can I assume that this is the 3.0 motor?
Thanks,
Pete
Thanks,
Pete