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Old 10-10-2019, 11:09 PM   #291 (permalink)
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Did your trans ever develop a third gear grind? My trans has been plagued with one for quite some time... maybe GM fixed the issue by 2009?

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Old 10-11-2019, 09:20 AM   #292 (permalink)
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I've never had any issues with the tranny/clutch, I've missed shifted maybe a handful of time and ground something a little but that's it. I've had the car since 26,000 miles. On my 2nd set of brake pads. shoes replaced once.

Replaced a bunch of fuel/ignition parts over last 12 months only to finally figure out it was a $20 evap valve. Maf pigtail and vvt actuator only other engine parts ever needed I think. Front wheel bearingS of course. Few suspension parts to try to eliminate a knock on bumps but must be strut and but I've never replace struts on any of my cars.

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Old 10-11-2019, 08:03 PM   #293 (permalink)
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My trans developed a third gear grind at approx 120-130K, but hung on until 177K. It was brought up at the Dragon that I had a mild axle seal leak, maybe the trans went dry? Maybe GM updated the shift fork design on the later F23s, it was said that the end of the shift fork was partly to blame for people losing third gear in the earlier cars. At any rate mine is trashed and the used one will have only 108K on it, though in the interest of being cheap I’m using my clutch over again unless it’s discovered to be on the very brink of failure. Trans is getting new fluid and axle seals though, it should be good for the remaining life of my engine (due to extended idling over the summer it now smokes lightly at high RPM/load). I’m excited to have the FY1 trans though, it should massively help mileage
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Old 10-11-2019, 09:09 PM   #294 (permalink)
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Quote:
Originally Posted by 19bonestock88 View Post
ím excited to have the FY1 trans though, it should massively help mileage
You're running 205/65R15 tires, right? If so, your gearing will now be slightly taller than an Insight's.
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Old 10-11-2019, 09:14 PM   #295 (permalink)
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I am on a 205/65 tire, though I half contemplated trying out a 205/70 to see if I can handle the diameter... goal is to be below 2000 RPM on the freeway at 60mph
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Old 10-11-2019, 09:18 PM   #296 (permalink)
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You'll be just barely beating that with the new trans. 205/65R15 tires with a 3.63 FD and the 0.69 5th gear puts you at 60.58 MPH @ 2000 RPM.

With the stock trans and 205/65R15 tires you're at 57.26 MPH @ 2000 RPM.
An Insight is 58.56 MPH @ 2000 RPM.
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Old 10-11-2019, 09:25 PM   #297 (permalink)
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Nice! Looks like with the FY1 trans I’ll be damn close to my goal too! Ideally I’d like to land at around 1900 or so, you know, below 2k enough you can tell on the gauge lol
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Old 10-13-2019, 05:55 PM   #298 (permalink)
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I 've thought of going up to 205/x for summers but haven't yet. Cheap summer tires to save the expensive tires for winter.
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Old 10-13-2019, 07:56 PM   #299 (permalink)
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They work fine on my car, I think I gained a bit of mileage from the larger diameter. Handles great on a 205/65 tire, though it’s worth noting that I’m on Cobalt SS/TC suspension which is much much firmer than stock and I run them at 50-55psi both to lower rolling resistance and to tame sidewall flex... with a stickier compound than the LRR stuff I’m running this thing would truly be a weapon in the corners
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Old 10-17-2019, 10:54 PM   #300 (permalink)
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XFE (FY1) trans swap saga!

So, my transmission swap saga has begun with a broken transmission! I get another transmission and go to swap it in, finding numerous problems along the way. First, the front transmission mount is different between the M86 and the FY1 transmissions. However, Getrag left the casting nub in place where the mounting hole was for the M86 transmission, and two of the other bolt holes lined up. Solution- drill and tap the transmission case for a similar sized bolt (3/8Ē instead of M10 but itís a minor difference). (pic included)

Second problem was that the slave cylinder on the M86 transmission(which mated up with the stock clutch line) was bad, so we used the slave cylinder from the FY1 transmission, but it didnít mate up with the stock clutch line, the nipple on the end was different. Solution- cut off the stock M86 clutch line nipple and heat the nylon line with a heat gun, press the cut off FY1 clutch line nipple into the line, no leaks and it mated up perfectly with the FY1 slave cylinder, that appeared new.

Third problem was that the transmission was supplied with a crusty looking roll pin in the linkage, that I had no idea the lifespan of. Solution- cut out the roll pin with the micro Dremel and replace it with a further hardened version of the Clevis pin that was in my shifter. It was actually a bit larger in diameter, now an interference fit which required a hammer and grease to install. The result is shift action thatís firm and super precise with no slop whatsoever, a pin that should never break no matter what I do to it, and a spare pin to keep in the glove box just in case I was wrong.

We also installed my OTTP control arm bushings, as all of the ones on the car were wasted, possibly damaged from the 30mph driveline lock that occurred when the previous transmission decided to grenade itself. Now all the control arm bushings are solid pieces, with no flex whatsoever. More linear and precise suspension travel, yadda yadda...

We filled the transmission with fluid and bled the clutch, buttoned everything together, fired the engine, everything was looking good. Took it for a test drive, car handled great (though alignment was noticeably off), transmission shifted great, I was happy and all was going well...




Until I quickly discovered the final problem, which isnít solvable yet. I got onto the throttle coming out of a tight curve, and found some NASTY clutch slip. Apparently, my pressure plate had worn at a similar rate as the original slave cylinder (which was bad), and when paired with a new, firmer slave cylinder, doesnít provide full and complete clutch engagement. Itís good enough to slowly move the car on flat ground, but anything over about 22% throttle angle makes it slip badly. At one point I had it up near the limiter in 5th going 55mph, just by stomping the accelerator. We reused the original clutch and pressure plate for no other reason than I couldnít afford to swing the cost of the replacement and to pay for all the labor too. I figured that if it hadnít begun slipping I still had some life left. Wrong again! Now the mad scientist and I have to rip it all back apart and replace the clutch that I fried... (vague Vin Diesel reference)

Anyway, tune in next week for the next episode of ďwill this thing ever drive again?Ē

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