How many here shift perfect everytime out? - Page 2

cassisrot · 11-11-2003, 05:53 AM

This is just an aside but I seem to remember that the 901 didn't have upshift synchros on first gear and I always had to just touch second gear before shifting neutral to first. That "fooled" the trans into thinking I was downshifting so no graunch. Is that right or has my mind completely failed me. Did they put upshift synchros on the 915 for first?

red-beard · red-beard's Garage

There is only 1 synchro on 1st gear. There is only 1 synchro on every gear, except reverse which has none.

cassisrot · 11-11-2003, 06:27 AM

As I feared, my mind has failed. Maybe in my next life...

DG624 · 11-11-2003, 07:00 AM

Sonicdb, I have the same problem. It shifts fine for several times and then sticks like it is out of alignment. I tried adjusting the shift coupler. I have had everything upgraded (rebuilt trans) including the bushing on the shifter but did not replace the coupler bushings. Is it cheaper to replace the whole coupler or just the bearings?

I have had this nagging problem since the rebuild (sticks going into 1,2, and grinds if I don't go to neutral for a second going from 5 to 4) and would like to solve it. The short shifter did not do much and the shift bushings did not do much either. My last thing to try is the shift coupler. Could the rebuild be bad?

jlex · jlex's Garage

I used to complain about the balkiness of downshifting into 2nd gear, typically when making a turn. Used to make a bit of a pause, like on an upshift.... WRONG. Have found out that on my 915, making the downshift into second immediately when the clutch disengages makes it smooth as silk... wait too long & the balkiness is inevitably there. I make the slight pause between all shift except for the downshift to 2nd... try it!
regards,
jlex.

Burnin' oil · 11-11-2003, 07:27 AM

I rarely. . . wait a minute, did you say "shift?" Oh, never mind then.

singpilot · 11-11-2003, 09:12 AM

Sonic!

I have the exact same problem!

I call in the taxis in Manhattan, Hermosa and Redondo at least once a week!

A cab ran a red light (as usual) last friday night right in front of the marina here, and had a head on WITH ANOTHER CAB!!!!

Macabe, yes, but there were people laughing after the two gentlemen drivers were removed from their wrecked cabs, and were yelling at each other in a foreign language. Even funnier, they couldn't understand each other because it wasn't the same foreign language!

Needless to say, not a single one of the Redondo PD guys were quite so amused. I have actually seen the motor guys sitting in the bushes writing tickets to cabs and bike riders (long overdue) for running the red light. The bike riders usually also get one for no ID.... followed by a warning about attitude. Seems the tighter the pants, tighter the sphincter when confronted.

Didn't mean to hijack the thread, but couldn't resist.

Sonic dB · Sonic dB's Garage

Singpilot.... Wow....I came across an accident just seconds after it happened at the intersection by the Crown Plaza/Golds gym (Beryl St) just last week. I was on my way home and was going to take that U turn around the gym to get to Catalina.

As I got to the intersection, the cab-van had just cracked that BMW and the lady was still inside the Beemer.....people were running up to help her and the cab driver was still in his van.

I thought about stopping, but realized that there was nothing I could do to help the situation and would probably just be in the way. An hour later, I was on my way to Golds and they were just towing the cab out of the intersection. The BMW was just totalled, she may have been seriously hurt.

its getting out of control down there with those damn cabs. Speed limit is like 30 and they go ripping down there at 50+.

singpilot · 10:00 AM

That wreck was a week earlier than the one last weekend! Another cab running a red light. (Same exact intersection.)

I avoid Hermosa downtown on a Friday or Saturday night. The brawling drunks in the streets don't bother me. The jaywalking parties in progress don't bother me.

The Taxi mafia that drives like they are immune to Newtons' third law scare me.

singpilot · 11-11-2003, 09:57 AM

OK, sorry for the break.....

Now back to our regularly scheduled thread.

Sonic dB · Sonic dB's Garage

Ive got a plan....while the fat taxi drivers are out of their cabs standing on the corner of Hermosa and Pier Ave smoking and gabbing... we go in, dressed in black and chain the axles of their cabs together ala "American Graffiti" style... then the next time they take off "BAM"... axles laying all over the street.

OK thread hi jack over...back to shifting problems.

FYI, I do think Swepco helps and Im gonna put a new can in over the holidays to keep it fresh.

H.G.P. · 11-11-2003, 02:00 PM

Quote:

Originally posted by red-beard
Clutch adjustment, shift bushings, rebuild the Shifter itself (2 bushings and a spring in there no one ever replaces), shift alignment, and good synchro's, sliders and dogteeth.

These babies are getting old. If you're having trouble shifting, it is probably not your technique.

Yes, my 901 has the spring for reverse and first. Feels very good, so I believe that part is fine.

rdane · rdane's Garage

Swepco does help. A gear oil change every 5000K miles helps even more.

GrindingGears · 02:25 PM

I saw a cabby getting a ticket on Pier Ave on Friday night...I laughed.

post hijack!

Jim Garfield · 11-11-2003, 03:40 PM

I don't think that anyone gets a perfect shift every time...it's the pursuit of the perfect shift that's fun

Langers · 11-11-2003, 06:23 PM

Quote:

Originally posted by masraum
Klaus, the gas starts to feed in just before the clutch starts to engage. To much throttle and the car will lurch forward, to little throttle and the car will be lurched backward as if you downshifted without blipping, just right and the car will almost feel like an automatic. There will of course be some change in momentum since you were decellerating for a moment, but it's a smooth resume of rate or acceleration instead of a jerk. I'm no instructor so it's hard to describe, but when you get it right it feels good. I don't feel like I'm stressing the car the way a full throttle speed shift would, and the clutch doesn't slip forever.

As some of the others have said, some days I'm on and some days not so much.

Thanks for the help. I just have a bit of trouble because the car I drive (not a Porsche) has worse throttle response than a diesel. Not only is it slow to respond, it will only increase revs in 200rpm increments, so it's hard to get everything perfectly smooth. Time for a custom chip and lightweight flywheel!