E code rotor markings ?
08-07-13, 01:09 AM
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E code rotor markings ?
Cleaned up my rotors and I noticed they had what I initaly perceved as an "m" which later turned out to be an "E" .I believe this has somethingtodo with the weight of the rotor .
? Does any one have any info one the matter
Or the specs of this "E"code rotor?
? Does any one have any info one the matter
Or the specs of this "E"code rotor?
08-07-13, 08:18 AM
#2
welcome to the board. 
yes. the rotors are coded according to specific weight ranges that they identify with the letters A through E. I remember seeing an actual chart that showed the corresponding weights, but I honestly don't remember where I saw it. knowing me, i'm sure I must have copied it and have it somewhere, but the question is where.
when rebuilding an engine, you never want to use rotors that are more than TWO letters separated. for example if you have an "A" rotor, you can use a "B" or a "C" in addition to the obvious - another "A". you SHOULD NOT use a "D" or "E" without rebalancing.
yes. the rotors are coded according to specific weight ranges that they identify with the letters A through E. I remember seeing an actual chart that showed the corresponding weights, but I honestly don't remember where I saw it. knowing me, i'm sure I must have copied it and have it somewhere, but the question is where.
when rebuilding an engine, you never want to use rotors that are more than TWO letters separated. for example if you have an "A" rotor, you can use a "B" or a "C" in addition to the obvious - another "A". you SHOULD NOT use a "D" or "E" without rebalancing.
08-07-13, 09:33 AM
#3
Well.. you should concider yourself lucky , I believe they go as high as F's .
A's being the heaviest , and F's the lightest . Lighter rotor's means less stress on the Eshaft at higher RPM's so theoretically your engine could rev a bit higher then an A rotor motor .
also You can use a D ,( E ), F rotor . without having to balance.
A's being the heaviest , and F's the lightest . Lighter rotor's means less stress on the Eshaft at higher RPM's so theoretically your engine could rev a bit higher then an A rotor motor .
also You can use a D ,( E ), F rotor . without having to balance.
08-10-13, 09:52 AM
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lmao, ok... time to search the archives for the weight tables, one guys saying completely the opposite of the other in regards to weight and I am curious
Found it:
https://www.rx7club.com/2nd-generati...stamps-405208/
cheers.
I trust Ted quiet a bit.
This has been a great morning coffee read.
Found it:
https://www.rx7club.com/2nd-generati...stamps-405208/
cheers.
I trust Ted quiet a bit.
This has been a great morning coffee read.
Last edited by archaphil; 08-10-13 at 10:00 AM.
08-11-13, 04:49 AM
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Nice,the rotors are s4 na off an 88 GTU , it only seems fitting that they'd be lighter ...
Im going to throw em on the scale & see how they compare to the chart ill let u guy kno how much they weigh in grams.
Im going to throw em on the scale & see how they compare to the chart ill let u guy kno how much they weigh in grams.
08-12-13, 01:54 AM
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