Flywheel differences between two S4 motors
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Flywheel differences between two S4 motors
Hey everyone, I have two motors, both S4 turbo. One i pulled from my car(bad coolant seals), the other is a Japanese motor I got from Brian(Japan2LA).
The "newer" motor is just about ready to go in, I swapped all the good stuff from the bad motor, the only thing left is to get the flywheel resurfaced and put the new clutch on.
Looking at both my motors, I noticed they have different flywheels and thought that was strange since they are both S4 turbo motors, and I was just looking for a little insight on this. Also, I know I probably can't swap those because of the balance issue, even though the older one looks to be in better condition.
Old motor
Newer motor
The "newer" motor is just about ready to go in, I swapped all the good stuff from the bad motor, the only thing left is to get the flywheel resurfaced and put the new clutch on.
Looking at both my motors, I noticed they have different flywheels and thought that was strange since they are both S4 turbo motors, and I was just looking for a little insight on this. Also, I know I probably can't swap those because of the balance issue, even though the older one looks to be in better condition.
Old motor
Newer motor
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Well, i did a little more searching and found an old post with a link the the mazdatrix site with flywheel pictures and my S4 motor has an S5 turbo flywheel. I don't think my motor is an S5 motor with an S4 front cover, does anyone have any suggestions?
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should i check the distance on center or just the space between? also, my motor did come with the twin scroll turbo. I'll check everything and post back after work, thanks.
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I did, they are the same distance apart, knock sensor location is the same, and I forgot to mention, the JDM motor came with the manual OMP. I'm hoping I don't have to tear it all down to find out what's inside.
I contacted brian but haven't heard back from him yet, hopefully he gets back to me in the next few days, i know he's a busy guy. Right now I'm hoping one of two things, I can just put my other S4 flywheel on it and be done with it, or the S5 flywheel means I have S5 rotors and counterweights. I'd be fine with switching the flywheels, but I think it would be great having the extra compression ratio of the S5 rotors.
Thanks for the help so far Turbonut
I contacted brian but haven't heard back from him yet, hopefully he gets back to me in the next few days, i know he's a busy guy. Right now I'm hoping one of two things, I can just put my other S4 flywheel on it and be done with it, or the S5 flywheel means I have S5 rotors and counterweights. I'd be fine with switching the flywheels, but I think it would be great having the extra compression ratio of the S5 rotors.
Thanks for the help so far Turbonut
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Dont swap the flywheels, use the one that came on the motor. It was most likely overhauled in Japan and S5 rotors swaped in. I did not change it, they way I shipped is the way it came in from Japan.
I have a shelf full of S5 TII and FD flywheels already resurfaced.. Can send one to you for cheap...
I have a shelf full of S5 TII and FD flywheels already resurfaced.. Can send one to you for cheap...
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I already checked the codes, and my old one is N318 and the new is N370. I would have taken pictures of the stamps, but It would have been hard to get a good shot of the N370 since that motor is already back together. I'm pretty happy it has the S5 internals since it has the lighter rotational mass and also, is that why the redline is higher on S5s?
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