Lighter damper really worth anything??
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Pro
Joined: Jun 2004
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From: Lantana TX
Lighter damper really worth anything??
Ok as some of you know I am in the middle of a complete overhaul (engine). I was wondering what a difference of -6lbs on the balancer would mean in HP and engine life.
Maybe I am thinkining to much about this stuff lately, but it seems that a reduction in 6lbs may not be much at idle, but reving at 5-6K would put additional drag on the crank wouldn't it?
If this is <.10 of a second increase in ET. no need to go any further I am not at that level.
Thanks folks,
Maybe I am thinkining to much about this stuff lately, but it seems that a reduction in 6lbs may not be much at idle, but reving at 5-6K would put additional drag on the crank wouldn't it?
If this is <.10 of a second increase in ET. no need to go any further I am not at that level.
Thanks folks,
Race Director
Joined: May 2005
Posts: 10,674
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From: Millington Illinois
St. Jude Donor '08-'09
An aluminum flywheel will make a much bigger difference in your rotating weight than a lighter vibration damper. It will rev faster too. The weight reduction on the flywheel is farther from the center. With a healthy cam you need the bigger damper to remove more harmonic vibration. All the older HP stock chevys have an 8" damper. The stock lower performance motors used a 6 1/2"
Team Owner
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From: Crossville TN
The damper is designed to cancel out some of the shock pulses created by combustion; to work properly, it needs to be "sized" for your engine. One sure way to reduce reliability of your engine....leave off or put on too small of a damper. That would just allow excessive vibration to travel throughout your engine and drivetrain. Keep the damper (designed for your engine); if your engine is modded, get a damper that is appropriate for your 'new' engine design. Save weight in other more important areas.
Race Director
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From: Millington Illinois
St. Jude Donor '08-'09
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Joined: Jun 2004
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From: Lantana TX
I understand what you guys are saying, but I will be saving 6lbs in weight regardless and the one that I am getting is an-
ATI #085-917781
SB-Chevy Super Damper
6.325'' OD
Steel Shell
1-piece Hub & Inner Shell
1.245'' Crankshaft
Internal Balance
Std. Front / No Counterbore
3 Ring
I have to get a new one anyway and just wondering if it was going really gain anything. It does not sould like it will really do much.
thanks
ATI #085-917781
SB-Chevy Super Damper
6.325'' OD
Steel Shell
1-piece Hub & Inner Shell
1.245'' Crankshaft
Internal Balance
Std. Front / No Counterbore
3 Ring
I have to get a new one anyway and just wondering if it was going really gain anything. It does not sould like it will really do much.
thanks
Thread Starter
Pro
Joined: Jun 2004
Posts: 700
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From: Lantana TX
3k out of the 6K spent so far I have been able to hide from the wife...I can't go any more
something is on my shoulders telling me to stop spending
Race Director
Joined: May 2005
Posts: 10,674
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From: Millington Illinois
St. Jude Donor '08-'09
Race Director
Joined: Apr 2000
Posts: 17,676
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From: Who says "Nothing is impossible" ? I've been doing nothing for years.
I am putting a 6lb / 6.325" ATI $uper dampner and a Hays lightweight 25lb steel flywheel ( they go up to 50lbs ) on my new 427ci small block.
My friend who owns the speed shop is a long time drag racer and seems to like the lightweight stuff, he calls it "free horsepower"
My friend who owns the speed shop is a long time drag racer and seems to like the lightweight stuff, he calls it "free horsepower"
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Race Director
Joined: May 2005
Posts: 10,674
Likes: 122
From: Millington Illinois
St. Jude Donor '08-'09
I am putting a 6lb / 6.325" ATI $uper dampner and a Hays lightweight 25lb steel flywheel ( they go up to 50lbs ) on my new 427ci small block.
My friend who owns the speed shop is a long time drag racer and seems to like the lightweight stuff, he calls it "free horsepower"
My friend who owns the speed shop is a long time drag racer and seems to like the lightweight stuff, he calls it "free horsepower"
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
I understand what you guys are saying, but I will be saving 6lbs in weight regardless and the one that I am getting is an-
ATI #085-917781
SB-Chevy Super Damper
6.325'' OD
Steel Shell
1-piece Hub & Inner Shell
1.245'' Crankshaft
Internal Balance
Std. Front / No Counterbore
3 Ring
I have to get a new one anyway and just wondering if it was going really gain anything. It does not sould like it will really do much.
thanks
ATI #085-917781
SB-Chevy Super Damper
6.325'' OD
Steel Shell
1-piece Hub & Inner Shell
1.245'' Crankshaft
Internal Balance
Std. Front / No Counterbore
3 Ring
I have to get a new one anyway and just wondering if it was going really gain anything. It does not sould like it will really do much.
thanks
Gotta be the most confusing chart I have ever seen, I am getting a headache trying to read it and I used to spec in electronic parts :
http://www.atiperformanceproducts.co...mchevy.htm#how
Thread Starter
Pro
Joined: Jun 2004
Posts: 700
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From: Lantana TX
They ordered the 917782 for me, I can't read that ATI chart so I don't know what the difference is between the one you ordered 917781 and the one I am getting 917782
Gotta be the most confusing chart I have ever seen, I am getting a headache trying to read it and I used to spec in electronic parts :
http://www.atiperformanceproducts.co...mchevy.htm#how
Gotta be the most confusing chart I have ever seen, I am getting a headache trying to read it and I used to spec in electronic parts :
http://www.atiperformanceproducts.co...mchevy.htm#how
No clue what that means...anyone??, but now I need to find out as I may have selected the wrong one.
Race Director
Joined: May 2005
Posts: 10,674
Likes: 122
From: Millington Illinois
St. Jude Donor '08-'09
Really nice hood!
The link was for a Manual Flywheel. Stock ones are about #30. The Fidanza aluminum is #13.5. Rotating weight savings of #16.5
Not real sure how much that the damper will affect power or longevity with a large fluid filled torque convertor at the other end of the crank. Motorhead is pretty sharp on making big power in a small package so if it is good enough for him it is probably fine.
The link was for a Manual Flywheel. Stock ones are about #30. The Fidanza aluminum is #13.5. Rotating weight savings of #16.5
Not real sure how much that the damper will affect power or longevity with a large fluid filled torque convertor at the other end of the crank. Motorhead is pretty sharp on making big power in a small package so if it is good enough for him it is probably fine.
Race Director
Joined: May 2005
Posts: 10,674
Likes: 122
From: Millington Illinois
St. Jude Donor '08-'09
Wonder if the difference is the change in the timing configuration. I know there are a couple different timing locations on chevy dampers. Don't know what year they changed or what layout is used with what crank. Maybe a keyway location difference in the crank? I see they use 2 different crank hubs on there application chart. They also claim up to 45 HP increase over a fluid damper!
.There we go again, Motorhead talking me into spending more money.
.There we go again, Motorhead talking me into spending more money.
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Wonder if the difference is the change in the timing configuration. I know there are a couple different timing locations on chevy dampers. Don't know what year they changed or what layout is used with what crank. Maybe a keyway location difference in the crank? I see they use 2 different crank hubs on there application chart. They also claim up to 45 HP increase over a fluid damper! .There we go again, Motorhead talking me into spending more money.
.There we go again, Motorhead talking me into spending more money.Yes they are also the most expensive out there but my buddy says they are the best, hands down and uses them all applications if the customer can afford it
