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71vdubturbo · Joined: 28 Nov 2006 Posts: 75 Location: Rolla, Missouri

My 4 speed the other day wouldn't go into reverse without a terrible grind. I had driven it for about an hour so it was nice and warmed up.

Is there a reverse gear synchro?

Would too light of gear oil cause this? I used what haynes recommended, 80w90.

Do I just need another transmission? (This would be what my economic stimulus tax refund would go to.)
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1977 Porsche 924 - going away...
2001 Audi S4 - 2.7T, Tip

Smoothie · Posted: Mon Mar 17, 2008 6:33 am Post subject:

How's the shift lever? They can wear, develop a lot of play and make it hard to get into reverse. Also try shifting into other gears - 1, 2, before going for reverse - this eliminates any possibility for a little grind when going for R.
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"..it's made in Germany. You know the Germans always make good stuff."

'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox

71vdubturbo · Joined: 28 Nov 2006 Posts: 75 Location: Rolla, Missouri

The original stud on the shift lever broke. I welded a bolt onto it. It does need a new shift lever but that will happen when the funds come in.

I tried the shift-to-1st-or-2nd trick but it still didn't help.
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1977 Porsche 924 - going away...
2001 Audi S4 - 2.7T, Tip

924RACR · Posted: Mon Mar 17, 2008 7:46 am Post subject:

Some 5-speeds have a synchro, but I think not all... and I'd be a little surprised if the 4-speeds do.
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Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype

71vdubturbo · Joined: 28 Nov 2006 Posts: 75 Location: Rolla, Missouri

Smoothie · Posted: Mon Mar 17, 2008 10:48 am Post subject:

Might your clutch be out of adjustment?
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"..it's made in Germany. You know the Germans always make good stuff."

'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox

71vdubturbo · Joined: 28 Nov 2006 Posts: 75 Location: Rolla, Missouri

Well, I thought that at first. I just changed the clutch and pressure plate about a month ago (roughly 200 miles). I adjusted everything when I changed it.
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1977 Porsche 924 - going away...
2001 Audi S4 - 2.7T, Tip

Paul · Posted: Mon Mar 17, 2008 1:07 pm Post subject:

Time to check it again, non hydraulic operated clutches usually need adjusted a few hundred miles after replacement.
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White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy.

71vdubturbo · Joined: 28 Nov 2006 Posts: 75 Location: Rolla, Missouri

Cool. I'll have to check it in the morning.
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1977 Porsche 924 - going away...
2001 Audi S4 - 2.7T, Tip

!tom · Posted: Tue Mar 18, 2008 7:37 am Post subject:

Pilot bearing?
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78 924 NA
5-lug

StienbargerR · Joined: 28 Oct 2005 Posts: 1362 Location: Richmond, IN

are you at a dead stop when you shift into reverse? Mine grinds if I'm rolling a bit.

Ryan
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1978 924 NA
-250lb lowering springs, Euro Pistons

71vdubturbo · Joined: 28 Nov 2006 Posts: 75 Location: Rolla, Missouri

I changed the pilot bearing when I did the clutch.

I'm at a dead stop when I try to shift. When it's cold it goes into reverse fine. It's when it's warm when I get problems.[/quote]
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1977 Porsche 924 - going away...
2001 Audi S4 - 2.7T, Tip