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I drove over 500 miles (one way) to pick it up. Now, that is either dedication or some kind of disorder?
It's out of an '88 Turbo 5-speed ( jn1cz14s6jx202115 ). But the one thing that caught my eye was the information on the model plate that lists the (typical for 87-89) FS5R30A transmission, and the differential code RC35 which I believe to be a 3:54 gear ratio. I thought that all 87-89 Turbo's had the RC37 code for the 3:70 gear ratio??? I'm not complaining, because I would rather have the 3:54 over the 3:70 and hopefully don't have to purchase a new speedometer gear or swap the pinion/ring gears from the old differential.
I found THIS information on z31.com: "Some models may have the wrong diff for their model year, for example, it's been reported that early production date 87 turbos might still have the differential that came with the 84-86 turbos. To be sure of what differential your car came with originally, look at the model plate under the hood. If your car originally came with a 3.54 diff, it'll say RC35 somewhere, 3.7 diff will say RC37, and a 3.9 diff will say RC39". I'll be taking the cover off this week and inspecting everything per the FSM (and count the teeth). Just wondering if anyone else has come across this?
Here it is:
A lot nicer than my original:
It's out of an '88 Turbo 5-speed ( jn1cz14s6jx202115 ). But the one thing that caught my eye was the information on the model plate that lists the (typical for 87-89) FS5R30A transmission, and the differential code RC35 which I believe to be a 3:54 gear ratio. I thought that all 87-89 Turbo's had the RC37 code for the 3:70 gear ratio??? I'm not complaining, because I would rather have the 3:54 over the 3:70 and hopefully don't have to purchase a new speedometer gear or swap the pinion/ring gears from the old differential.
I found THIS information on z31.com: "Some models may have the wrong diff for their model year, for example, it's been reported that early production date 87 turbos might still have the differential that came with the 84-86 turbos. To be sure of what differential your car came with originally, look at the model plate under the hood. If your car originally came with a 3.54 diff, it'll say RC35 somewhere, 3.7 diff will say RC37, and a 3.9 diff will say RC39". I'll be taking the cover off this week and inspecting everything per the FSM (and count the teeth). Just wondering if anyone else has come across this?
Here it is:
A lot nicer than my original:
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