GalaxieInline
Active member
I've hit a bit of a snag on my supercharged 223 project, I am needing a Damper for my engine with an 9 groove belt pulley built in.
I can find some V8 dampers that may work but I have a major question:
After speaking with both Immovators West and Langdons, they both advised me that Inline Sixs in general are harsh on dampers and need larger dampers with thicker rubber than V8s due to the higher torsional harmonics than a V8.
The 223 has a 1.250" crank snout diameter.
It appears that the 4.6 mod motor has the same diameter and they are available with overdrive supercharger pulleys built into the damper. I have read NOT to go with a fluid damper because they are incapable of damping the harmonics ar higher RPM and will result in shattered cranks.
ATI makes a damper for the 4.6 that will physically fit and do what I need it to do with a little modification, however, will it be enough harmonic damping for the 6? Will having the supercharger driven from the shell become an issue with rotational damage to the elastomer?
The reason for wanting to use a pulley style damper is it makes my mounting setup a ton easier to fabricate, as the timing cover will be being replaced by a front plate that will hold the procharger.
I've read other guys using V8 dampers on other 6s but I am unsure how long they have lived in that application, Langdon told me that a V8 damper would shred in no time on a 6 and that he had quite a bit of experience with it happening.
I can find some V8 dampers that may work but I have a major question:
After speaking with both Immovators West and Langdons, they both advised me that Inline Sixs in general are harsh on dampers and need larger dampers with thicker rubber than V8s due to the higher torsional harmonics than a V8.
The 223 has a 1.250" crank snout diameter.
It appears that the 4.6 mod motor has the same diameter and they are available with overdrive supercharger pulleys built into the damper. I have read NOT to go with a fluid damper because they are incapable of damping the harmonics ar higher RPM and will result in shattered cranks.
ATI makes a damper for the 4.6 that will physically fit and do what I need it to do with a little modification, however, will it be enough harmonic damping for the 6? Will having the supercharger driven from the shell become an issue with rotational damage to the elastomer?
The reason for wanting to use a pulley style damper is it makes my mounting setup a ton easier to fabricate, as the timing cover will be being replaced by a front plate that will hold the procharger.
I've read other guys using V8 dampers on other 6s but I am unsure how long they have lived in that application, Langdon told me that a V8 damper would shred in no time on a 6 and that he had quite a bit of experience with it happening.
