Differences between M28/43&44 vs. M28/41&42
03-03-2018, 08:01 AM
#1
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Differences between M28/43&44 vs. M28/41&42
Hi there,
I wonder what the differences are between the 5,0l ''S3" M28/43&44 and the S4 M28/41&42. The most obvious difference is the intake on the 43/44 vs. the smaller intake used for the S4/GT/GTS.
Why does the S4 have so much more HP?
I wonder what the differences are between the 5,0l ''S3" M28/43&44 and the S4 M28/41&42. The most obvious difference is the intake on the 43/44 vs. the smaller intake used for the S4/GT/GTS.
Why does the S4 have so much more HP?
03-03-2018, 12:59 PM
#2
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03-03-2018, 02:15 PM
#3
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To my understanding, the heads have differences. Combustion chamber shape is different on S4, valve sizes are bigger on S4. Intake ports are smaller on S-3.
Pistons are different, I think the valve reliefs and bowl on the crowns are deeper on S4's.
I think S-3's have more aggressive camshafts, more like the GT camshafts.
Take all of what I say with a grain of salt. I am by NO means an expert. The above is just what I have read and retained over the past years.
Pistons are different, I think the valve reliefs and bowl on the crowns are deeper on S4's.
I think S-3's have more aggressive camshafts, more like the GT camshafts.
Take all of what I say with a grain of salt. I am by NO means an expert. The above is just what I have read and retained over the past years.
