Borg warner trans problem

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Nov 5, 2016 | 10:02 AM

Daniel Wray

Thread Starter

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Joined: Nov 2016

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Borg warner trans problem

I have a 85' f150 with a 300-6 and a borg warner four speed with an overdrive. My problem is that it won't stay in third gear and second has a slight grinding sound while it's in gear. My question is why and does it need rebuilt and if so where can I find a rebuild kit for it?

Nov 5, 2016 | 10:17 AM

NumberDummy

Ford Parts Specialist

Joined: Nov 2006

Posts: 88,826

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From: Simi Valley, CA

Quote:

Originally Posted by Daniel Wray

I have a 85' f150 with a 300-6 and a borg warner

four speed with an overdrive. My problem is that it won't stay in third gear and second has a slight grinding sound while it's in gear. My question is why and does it need rebuilt and if so where can I find a rebuild kit for it?

It's not a Borg Warner trans. You have the Ford RTS TS-OD Top Shift 4 Speed Overdrive.

Popping out of 3rd gear and grinding in 2nd gear, the brass synchronizer blocker rings are worn.

Nov 5, 2016 | 04:38 PM

Franklin2

Moderator

Joined: Jan 2001

Posts: 56,992

Likes: 2,741

From: Virginia

Is it a 4x4? Here are some listings of used transmissions in Va. 4x4 4 speed overdrive.

1987
Transmission Assembly
Ford Truck F150 76,000 A I025P $275 Brooks Auto Sales, Inc. VARA USA-VA(Oilville) Request_Quote 1-800-552-6783 Request_Insurance_Quote
1984
Transmission Assembly
Ford Truck F150 CN 351,STD,MATCH UP 0 A 07023 $Call Shenandoah Auto Salvage, Inc. VARA USA-VA(Stuart-Draft) Request_Quote 1-540-943-2300 Request_Insurance_Quote
1987
Transmission Assembly
Ford Truck 150 4 SP,4x4,Floor 0 A 14008 $Call Shenandoah Auto Salvage, Inc. VARA USA-VA(Stuart-Draft) Request_Quote 1-540-943-2300 Request_Insurance_Quote
1987
Transmission Assembly
Ford Truck F150 CHECK ID 981129 $300 Salvage One Used Parts USA-VA(Coeburn) Request_Quote 1-276-467-1070 Request_Insurance_Quote
1987
Transmission Assembly
Ford Truck F150 MT, (4 spd), Ford Od, 4X4 981790 $300 Salvage One Used Parts USA-VA(Coeburn) Request_Quote 1-276-467-1070 Request_Insurance_Quote
1985
Transmission Assembly
Ford Truck F150 MBOX3,NTT,MT M0415 $Call American Auto Salvage USA-VA(Woodbridge) Request_Quote 703-494-7184 / 540-825-2571 Request_Insurance_Quote
1986
Transmission Assembly
Ford Truck F150 4.9,5SP,4X4 H0512 $Call American Auto Salvage USA-VA(Woodbridge) Request_Quote 703-494-7184 / 540-825-2571 Request_Insurance_Quote
1985
Transmission Assembly
Ford Truck F150 MBOX3,NTT,MT M0415 $Call American Auto Salvage-Formerly Phoenix Automotive-Store 2 USA-VA(Culpeper) Request_Quote 703-494-7184/540-825-2571 Request_Insurance_Quote
1986
Transmission Assembly
Ford Truck F150 4.9,5SP,4X4 H0512 $Call American Auto Salvage-Formerly Phoenix Automotive-Store 2 USA-VA(Culpeper) Request_Quote 703-494-7184/540-825-2571 Request_Insurance_Quote

Nov 5, 2016 | 10:01 PM

rowdyredneck

More Turbo

Joined: May 2008

Posts: 585

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Quote:

Originally Posted by NumberDummy

It's not a Borg Warner trans. You have the Ford RTS TS-OD Top Shift 4 Speed Overdrive.

Popping out of 3rd gear and grinding in 2nd gear, the brass synchronizer blocker rings are worn.

If its grinding during the shift to second it could be the blocking rings, but not the popping out of gear in third. The brass rings are only used to get the gear spinning during the shift for smooth engagement. Once the gear is engaged they become inactive. Popping out of gear could be caused by worn engagement teeth on the gear itself, worn or bent shifter fork, broken detent spring, or excessive main shaft end play. If its making a grinding noise all the time in second gear I would suspect either bearings or badly worn gears.