OVERKILL
$100 Site Donor 2021
Originally Posted By: nleksan
One reason why I love my 328 so much is the fact that it is a perfectly square engin, with 84mm stroke and bore (alt hough when I built up the motor, I went to 86.5mm bore w 84mm stroke for more displacement and less stress to help with running a very high pressure SC @ 10.8:1 SCR).
In fact, the reason why the E46 and E9x M3's have had issues with main journal bearings is due to the significant stress they undergo from combustion on an over square motor.
Same reason I almost never recommend stroker kits, as they tend to wear out the cylinder walls and piston skirts quickly, especially in very high specific outputand/or high RPM aapplications.
And this underlines a number of the reasons for the success of the 302 (both Ford and GM versions) with its 4" bore and 3" stroke. Short stroke, big bore. And why the bores always look immaculate when the engines are torn down.
The S62 is 3.3" x 3.1" (84mm x 78.9mm). Not quite as under-square as the 302.
The new 5.0L Ford is almost square at 92.2mm x 92.7mm and has the same firing order as the S62 (and flathead) instead of the "HO" firing order of basically all former hi-po push-rod Ford's and the entire previous Modular family. Not sure as to why here but I find it interesting nonetheless.
One reason why I love my 328 so much is the fact that it is a perfectly square engin, with 84mm stroke and bore (alt hough when I built up the motor, I went to 86.5mm bore w 84mm stroke for more displacement and less stress to help with running a very high pressure SC @ 10.8:1 SCR).
In fact, the reason why the E46 and E9x M3's have had issues with main journal bearings is due to the significant stress they undergo from combustion on an over square motor.
Same reason I almost never recommend stroker kits, as they tend to wear out the cylinder walls and piston skirts quickly, especially in very high specific outputand/or high RPM aapplications.
And this underlines a number of the reasons for the success of the 302 (both Ford and GM versions) with its 4" bore and 3" stroke. Short stroke, big bore. And why the bores always look immaculate when the engines are torn down.
The S62 is 3.3" x 3.1" (84mm x 78.9mm). Not quite as under-square as the 302.
The new 5.0L Ford is almost square at 92.2mm x 92.7mm and has the same firing order as the S62 (and flathead) instead of the "HO" firing order of basically all former hi-po push-rod Ford's and the entire previous Modular family. Not sure as to why here but I find it interesting nonetheless.
