Prothane suspension bushings
01-02-2012, 08:40 PM
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Prothane suspension bushings
How are these different than Energy Suspension (other than being considerably cheaper)?
Was thinking about doing urethane bushings over the winter. I remember in past 949 had only Energy Suspension stuff and it was in the order of $250 for a master kit. Now it's Prothane http://949racing.com/prothane-bushings-miata.aspx bushings at $199 for a master kit.
I'm assuming these are virtually identical (same durometer rating) but cheaper. Hell, even the picture is the same (reference - http://forum.miata.net/vb/showthread.php?t=272213)
Was thinking about doing urethane bushings over the winter. I remember in past 949 had only Energy Suspension stuff and it was in the order of $250 for a master kit. Now it's Prothane http://949racing.com/prothane-bushings-miata.aspx bushings at $199 for a master kit.
I'm assuming these are virtually identical (same durometer rating) but cheaper. Hell, even the picture is the same (reference - http://forum.miata.net/vb/showthread.php?t=272213)
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01-02-2012, 10:04 PM
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http://forum.miata.net/vb/showpost.p...9&postcount=15
Checked durometers and they match Bill's original request and Brian's data.
88 Energy Suspension front lower and all rear control arm
95 Energy Suspension front upper, sway bar and differential mount
80 Super Pro control arm, all
65 Polybush blue- soft
75 Polybush orange- sport
? Powerflex
70 Maruha rubber
55-65 Mazda Comp rubber
Safe to say the ES will be the best peformance option. No idea on ride quality yet as I haven't gotten them in a car yet. Planning a test session in about 10 days at Streets of Willow.
Base kit - Control arms only
88 Energy Suspension front lower and all rear control arm
95 Energy Suspension front upper, sway bar and differential mount
80 Super Pro control arm, all
65 Polybush blue- soft
75 Polybush orange- sport
? Powerflex
70 Maruha rubber
55-65 Mazda Comp rubber
Safe to say the ES will be the best peformance option. No idea on ride quality yet as I haven't gotten them in a car yet. Planning a test session in about 10 days at Streets of Willow.
Base kit - Control arms only
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10-20-2012, 07:49 AM
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Powerflex:
Yellow 70A
Purple 80A
Black 95A
Any metal is 304 SS CNC machined.
Uses copper-bearing lube if required (supplied) for installation.
Lifetime warranty.
UK factory.
I have no idea which is better (mfr or durometer) for each application, but I do know polyurethanes have huge variations in properties available by altering aspects of manufacturing, so I'd be surprised if they were "all the same", even keeping durometer A equal.
Yellow 70A
Purple 80A
Black 95A
Any metal is 304 SS CNC machined.
Uses copper-bearing lube if required (supplied) for installation.
Lifetime warranty.
UK factory.
I have no idea which is better (mfr or durometer) for each application, but I do know polyurethanes have huge variations in properties available by altering aspects of manufacturing, so I'd be surprised if they were "all the same", even keeping durometer A equal.
Last edited by Johnny2Bad; 10-20-2012 at 08:00 AM.
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