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Nine11cab
Join Date: Aug 2014
Location: Florida
Posts: 47
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83SC Transmission shifting problem when hot
I have a 1983SC, the transmission shifts great when the car is cold but when it gets hot the shifter will grind and not want to go in gear. Any suggestions would be greatly appreciated.
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Registered
Join Date: Oct 2003
Location: Michigan
Posts: 14,093
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Not so much heat related but...
Check the clutch cable for proper operation. Adjust as needed. Check the shifter related bushings as well as the coupler. It could be an internal issue but start with the easy things first. There are several threads on these tasks which will give more detailed info.EDIT> How many miles on the gearbox? When was the fluid changed out last?
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1981 911SC ROW SOLD - JULY 2015 Pacific Blue Wayne |
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Fleabit peanut monkey
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+1 on what Oh Haha says. Nail the basics. Take your time. Search using the advanced search function. There is so much info here your head will spin.
Tell us a little more. Did this just occur?
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1981 911SC Targa |
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Rescuer of old cars
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What about gear oil? Too slippery/thin when it warms up? A 915 requires some friction for the synchros to work.
With Kendall dino-oil in my 915, it has some resistance when cold, but shifts fine warm.
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2018 718 Cayman 2.0 Priors - '72 911T coupe, '84 911 Carrera coupe, '84 944, '73 914 2.0 |
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Registered
Join Date: Nov 2005
Location: Jersey Shore
Posts: 615
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Feel like ensuring proper fluid type is a good place to start. Too slippery or certain synths not good for the 915. I've used swepco 201 and Kendall nsmp - prefer the swepco 201.
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Scott 1981 911SC Targa - Platinum Metallic |
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Registered
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As "Arne2" and "schoward" have said, make sure you are not running synthetic gear oil in a 915 gear box. The 915 likes dino oil.
![]() I use Swepco 201 in my 915 gear boxes, but Kendell dino is also an excellent gear oil. BER |
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Nine11cab
Join Date: Aug 2014
Location: Florida
Posts: 47
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Thank you all very much Great Forum
Once again can't stress how much I appreciate all the feedback. I will start with the basics as indicated.
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