I just brought Bazza's car home from the alignment shop (pic below), and during the drive I noticed something I thought was "a bit weird", so I paid close attention to the tach, and the shift points.
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The 1-2 shift seems nice and firm, and the RPM's drop noticeably, but on the 2-3 shift, not only is there NOT much of a drop in RPM's, but it's not that noticeable. (If you held a gun to my head and forced me to pick a number, I'd say it dropped
maybe 300 RPM or so.) I stopped and started about 4 different times, and it was always the same- a nice 1-2 shift, and a "meh!" 2-3 shift, with little RPM drop.
(I should probably add that this is all relative/subjective, as I'm used to Ford C4 and C6 transmissions.)
Because of this, I can't say for certain that it actually
did shift into third/drive, so I noted I was running 2,100 to 2,200 RPM at 50 MPH, with a 24-1/2" tire (BFG Radial TA's, P205/75R14). According to the Manual I have, the car came with a 2.92 (open) rear, and I have no reason to believe it's been changed.
I'll find an online RPM/tire diameter/rear end ratio calculator of some sort after dinner, but here's my question: Are 904's known to have a "close" 2-3 shift? (I hope that makes sense.)
Please note that the car is going back to Bazza this weekend, either way, so I'm
not going to do anything about it right now, if this is indeed an issue. I'm simply putting together a list of items for next year, and I don't know if I should add this to it or not.
Thanks!
Jim
