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ATI/Fluidampr on a 300

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88F15088
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ATI/Fluidampr on a 300

Post #1 by 88F15088 » Fri Sep 18, 2020 1:39 am

As I slowly gather the parts for my forged 300 turbo build, I am getting closer to getting the machine work done. To have everything perfectly balanced, I want to take my flywheel and crank balancer so everything can be balanced together. While convenient and readily available, I don't have too much confidence in the Dorman stock replacement balancer. If I am not mistaken, the 300 crank snout diameter is the same as the 302's, in which case I should be able to use an ATI pulley for a 302 with neutral balance. From there I would need to have a machine shop make a pulley to run the serpentine drive, or, have ATI custom make a balancer based off the design of the stock unit, and make a pulley that will bolt on and line up with the existing accessory drive. Sounds great, until I hear that doing this would cost at least $800.

So what are my options for running a "good" balancer? Just grab a 302 balancer and have a pulley adapter made?

BigBlue94
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Re: ATI/Fluidampr on a 300

Post #2 by BigBlue94 » Fri Sep 18, 2020 6:10 pm

Dorman balancer last 1150 miles on my fresh build. Delaminated on me. Got one at the Moab Napa, house brand i think, and it has lasted at least longer than the dorman. Though im only at 2500 miles on the engine.

Ill be curious as to what comes of this thread.

BroncoAir sells serpentine pulleys for their York onboard air kits. It might maybe be able to be modified to work?
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

sixtseventwo4d
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Re: ATI/Fluidampr on a 300

Post #3 by sixtseventwo4d » Fri Sep 25, 2020 1:43 pm

Pioneer offers 2 different balancers for the 300 for use with serpentine. [imagecap]https://www.pioneerautoinc.com/engine/harmonic-balancers/harmonic-balancer-6919[/imagecap]

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Re: ATI/Fluidampr on a 300

Post #4 by CNC-Dude » Sun Sep 27, 2020 9:10 am

ATI and Fluidamper has been used by many that race for a long time. So its doable but not always cost effective for the purpose of crossover products being used on 6 cylinders.
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Re: ATI/Fluidampr on a 300

Post #5 by guhfluh » Sun Sep 27, 2020 7:23 pm

sixtseventwo4d wrote:Pioneer offers 2 different balancers for the 300 for use with serpentine. [imagecap]https://www.pioneerautoinc.com/engine/harmonic-balancers/harmonic-balancer-6919[/imagecap]

One should be for 1996 only with the crank trigger and the other for all other years with serpentine belt.
1967 F-250 Crew Cab 2wd, 300 6cyl, T-170/RTS/TOD 4-speed overdrive
240 head, Offy C, EFI exhaust manifolds, Comp 268H, mandrel 2.5-3" exhaust, Edelbrock 500, Pertronix ignitor and coil, recurved dizzy. 200whp/300wtq

sixtseventwo4d
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Re: ATI/Fluidampr on a 300

Post #6 by sixtseventwo4d » Sun Oct 04, 2020 8:15 pm

guhfluh wrote:
sixtseventwo4d wrote:Pioneer offers 2 different balancers for the 300 for use with serpentine. [imagecap]https://www.pioneerautoinc.com/engine/harmonic-balancers/harmonic-balancer-6919[/imagecap]


One should be for 1996 only with the crank trigger and the other for all other years with serpentine belt.


Stands to reason since that was the year (96) automakers were to be obd II compliant.

88F15088
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Re: ATI/Fluidampr on a 300

Post #7 by 88F15088 » Thu Oct 08, 2020 9:01 am

I am going to see what I can come up with, but just short of custom ordering a balancer from ATI, aren't there plenty of people running a stock replacement balancer on their builds? I would imagine a stock replacement balancer would work for me just fine, even with boost. Thoughts?

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THE FRENCHTOWN FLYER
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Re: ATI/Fluidampr on a 300

Post #8 by THE FRENCHTOWN FLYER » Thu Oct 08, 2020 12:23 pm

I agree.
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