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Is the G50 cranky getting into second before warmed up?
87 carrera, is a little reluctant to shift into second before the engine is warmed up. All other gears seem fine. Nothing heard, just a little grind going into second, more noticeable under 3k rpm.
Seems to disappear when the engine is warmed up. Is this normal or could I have an underlying problem? Does not seem to have worsened in the three months that I have owned the car. thanks.
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87 911 coupe "Katy" Summer Yellow Linen Mahogany interior 04 Pilot "The Pilot" |
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10-13-2005, 11:56 AM
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Registered Cruiser
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My tranny (also 87 G50) has always been "reluctant" to shift up into 3rd and grinds if I go too fast. Happens whether car is warm or cold. Doesn't bother me so I haven't investigated further. Do a search on "G-50 shifter bushings" or "G-50 clutch fork upgrade". Your car may or may not have this upgrade which seems to be recommended by many on this board.
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87' Carmine Red Carrera - Keeper 82' Silver SC - Sold 79' Gran Prix White SC - Sold 05' Black C2S - Daily driver I have never really completely understood anything. |
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10-13-2005, 12:10 PM
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PRO Motorsports
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They also like synthetic gear lube. Don't use Swepco in a G-50. Too slippery and thick when cold for the Borg-Warner type synchro's to work properly.
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'69 911E coupe' RSR clone-in-progress (retired 911-Spec racer) '72 911T Targa MFI 2.4E spec(Formerly "Scruffy") 2004 GT3 |
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10-13-2005, 12:16 PM
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Used Up User
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Definitely likes to be warmed up. Smooths out after 5 minutes. I'm using Redline Synthetic which helped but didn't cure warmup or the g50 rattle/whine noise.
Ian
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'87 Carrera Cab ----- “Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.” A. Einstein ----- |
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10-13-2005, 12:21 PM
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Have the same issue with mine first thing in the morning. I just blip the throttle a little bit to help the syncros engage going into second. Just a little blip.
-W
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"88 Commemorative Edition Carrera - RIP replacement - "90 Carrera 4 |
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10-13-2005, 12:24 PM
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PRO Motorsports
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Quote:
If you use Redline, make sure it says NS on the bottle. Otherwise it has a friction modifier for LSD's that will be similar to the additive in Swepco that makes it too slippery for the synchro's to work properly.
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'69 911E coupe' RSR clone-in-progress (retired 911-Spec racer) '72 911T Targa MFI 2.4E spec(Formerly "Scruffy") 2004 GT3 |
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10-13-2005, 12:27 PM
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Used Up User
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Thanks, Tyson. 75W90 NS is what I used. Although I read in a post here or on Rennlist that a Pcar owner at Redline has suggested a blend of NS & their slip variant was ideal. I might try it after the winter sleep.
And to clarify my cold shifting - it doesn't grind but it feels very mechanical when cold - you can feel the metal . . . Ian
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'87 Carrera Cab ----- “Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.” A. Einstein ----- |
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10-13-2005, 12:33 PM
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Began to have the issue in the '87 track car - don't remember whether it was 2nd or 3rd.
Changing fluid Redline resolved the situation completely. Great stuff. Used 100% Redline (75W90 NS IIRC), but after that my wrench actually suggested using 50:50 Redline:Mineral Gear Oil. Tom
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Ain't life grand? |
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10-13-2005, 12:35 PM
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PRO Motorsports
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Yeah, even with the right oil, sometimes they're just cranky when cold. Just a sign of some normal wear.
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'69 911E coupe' RSR clone-in-progress (retired 911-Spec racer) '72 911T Targa MFI 2.4E spec(Formerly "Scruffy") 2004 GT3 |
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10-13-2005, 12:42 PM
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MBruns for President
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I changed my gearbox oil - 56,000 miles 87 - it was getting a little notchy going into 2nd gear when cold - changed to Mobil one and it's smooth like butter now!
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Current Whip: - 2003 996 Twin Turbo - 39K miles - Lapis Blue/Grey Past: 1974 IROC (3.6) , 1987 Cabriolet (3.4) , 1990 C2 Targa, 1989 S2 |
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10-13-2005, 12:43 PM
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My 1988 G-50 is slightly heavy feeling from 1st to 2nd to 1st. Sounds like a good winter project, anyone have proven results using redline and mineral oil ?
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"The smaller the fine print, the larger the risk." 1988 911 coupe 2008 VW R32 2004 530I |
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10-13-2005, 12:47 PM
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Mobil 1 is recommended over Redline. But for the best protection of R&P and gear faces, Swepco can't be beat -- even though the G50 synchros are better suited to synthetics.
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10-13-2005, 12:51 PM
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do any of you folks with the 75w-90ns red line have a limited slip? do you get any limited slip grabbing/chatter with the red line or did you with other oils?
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Andy |
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10-13-2005, 12:55 PM
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Tyson,
What do you think of Mobil 1 over others? My car also has LSD.
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87' Carmine Red Carrera - Keeper 82' Silver SC - Sold 79' Gran Prix White SC - Sold 05' Black C2S - Daily driver I have never really completely understood anything. Last edited by jorian; 10-13-2005 at 01:03 PM.. |
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10-13-2005, 12:56 PM
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I'll chime in there -- Not a single ALMS car uses Redline. All use Mobil 1.
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10-13-2005, 02:15 PM
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Southern Class & Sass
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Is that because Mobil is an ALMS sponsor?
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Dixie Bradenton, FL 2013 Camaro ZL1 |
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10-13-2005, 02:24 PM
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Same issue with mine....Mobile 1 helps for sure!
Jason 88 CAB |
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10-13-2005, 02:28 PM
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PRO Motorsports
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Quote:
I totally agree with this.
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'69 911E coupe' RSR clone-in-progress (retired 911-Spec racer) '72 911T Targa MFI 2.4E spec(Formerly "Scruffy") 2004 GT3 |
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10-13-2005, 02:34 PM
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PRO Motorsports
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Quote:
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'69 911E coupe' RSR clone-in-progress (retired 911-Spec racer) '72 911T Targa MFI 2.4E spec(Formerly "Scruffy") 2004 GT3 |
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10-13-2005, 02:36 PM
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Re-edit:
Tyson, My car is an '87 with an LSD, for Redline, I should NOT get the NS type right? thanks Chris
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1987 Guards Red Targa (sold) 2006 Toyota Tundra DC 4x4, the "man-e-van" 1998 CR500 Well on the fringe...... Last edited by cbeers; 10-13-2005 at 02:54 PM.. |
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10-13-2005, 02:49 PM
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1987 Porsche 911 Carrera Cabriolet 3.2
Gone to California
Turbo
My Camaro
