A harmonic balancer.
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3900 Specs (LZ9)
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Originally posted by silverghostA harmonic balancer.
The engine is internally balanced. Old first gen 60v6's (Iron headed 2.8L's up to about 86) were Externally balanced on the flywheel/flexplate.
Harmonic Dampners use a rubber slip ring and dual steel sleaves to remove the normal internal combustion engine harmonics.
Think of it this way, when you strike a tuning fork on an object such as a table you produce vibrations and sound frequency from the tuning fork. You can visibly see this and hear the sound it produces. When the engine is running the force of Combustion acts like a sledge hammer on the top of the piston forcing it down. Harmonic Vibrations much like a tuning fork happen here, The force is transmitted through the rods to the crank which under load does flex and twist thousanths of an inch during opperating conditions. The harmonic dampner's job is to isolate and remove the natural frequency/vibrations from the crank.
Thus why its a stupid idea to run underdrive pullies that do not include or have a harmonic dampner built into them. People love to dissagree on this one but ask any engineer and you will recieve the same answer.Colin.
06 G6 GTP. 6spd.
92 Sunbird GT, 3200 Hybrid N/A 13.99 @ 95.22mph
90 Talon TSi -13.76 @ 99.41
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And those vibrations can cause a lot of damage if they're not kept under control by the dampner, I have one dumb friend who never put his dampner on right or all the way and it just tore the engine to hell.TRADED IN BUT NEVER FORGOTTEN: 2006 GT Coupe in granite metallic, 15/5% tint, vinyl side marker deletes, Doctor Speed Stage 3 CAI, RED calipers by DupliColor, RED LED interior lights, 45 LED tail lights, WideView 8000K HID coversion kit, Nokya Artic White fogs installed, running MoBil 1, FIRST ever granite metallic color matched headlights!! Color matched eyelids just finished! GT-R Exhaust installed. R1 Concepts drilled and slotted zinc plated front rotors.
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-Mike #2 (the self-proclaimed tallest G6 owner)
http://www.cardomain.com/ride/2645383
VMS ECM, GT-R Exhaust, Dr. Speed Stage 3 CAI, 35% Llumar Tint, Redline Hood Struts, Vent Visors,
Pontiac Inset Upper Grilles #1, STB, Black Euro Tails, PowerSlot Rotors, Hawk Brake Pads
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Originally posted by SappySE107actual rocker ratio is 1.7:1.2006 G6 GTP: Traded
2013 Mustang GT
Gotta have it Green color
Brembo brake package
420 HP 5.0L
Ford Racing Power Pack
GT500 track pack differential cover
BOSS 302 oil cooler, JLT oil separator
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Re: 3900 Specs LZ9
Originally posted by Alexander_Rychok87 View PostYANMAR 2200
We are doing some motor work on a Yanmar 2200 and can anyone tell me what the specs need to be for the big end of the connecting rod bore housing??? Any help would be greatly appreciated.
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