Thread Count for Crankcase Plug
Forum rules
If you need help logging in, or have question about how something works, use the Support forum located here Support Forum
Complete set of Forum Rules Forum Rules
If you need help logging in, or have question about how something works, use the Support forum located here Support Forum
Complete set of Forum Rules Forum Rules
-
MWalker
Topic author - Posts: 475
- Joined: Fri Jan 04, 2019 9:49 am
- First Name: Mike
- Last Name: Walker
- * REQUIRED* Type and Year of Model Ts owned: 1916 Roadster Pickup
- Location: NW Arkansas
- MTFCA Life Member: YES
Thread Count for Crankcase Plug
Does anyone know the thread count for the 3/4" crankcase plug? The fine thread for 3/4" is 16, but this is finer than that. I found the mention of a 3/4" "extra-fine" thread, which is 20 tpi. Is that what the plugs are? I need to get a tap to clean out the threads in mine.
-
Rich Eagle
- Posts: 6895
- Joined: Fri Jan 04, 2019 10:51 am
- First Name: Richard
- Last Name: Eagle
- * REQUIRED* Type and Year of Model Ts owned: 1909 TR 1914 TR 1915 Rd 1920 Spdstr 1922 Coupe 1925 Tudor
- Location: Idaho Falls, ID
Re: Thread Count for Crankcase Plug
Part #3080 3/4-24 tpi. It is the same as the differential oil plug #2532
My source:
My source:
Last edited by Rich Eagle on Sun Nov 06, 2022 5:38 pm, edited 1 time in total.
When did I do that?
-
MWalker
Topic author - Posts: 475
- Joined: Fri Jan 04, 2019 9:49 am
- First Name: Mike
- Last Name: Walker
- * REQUIRED* Type and Year of Model Ts owned: 1916 Roadster Pickup
- Location: NW Arkansas
- MTFCA Life Member: YES
Re: Thread Count for Crankcase Plug
Rich -- Part number 3080 at Lang's is the plug, but the listing doesn't mention the thread count. I have plugs but need a tap the right size. If you're sure that it's 24 tpi, I'll go ahead and order one. (Edit) I now see that you've posted a chart with that info. Thanks!
-
Original Smith
- Posts: 3699
- Joined: Tue Jan 08, 2019 10:43 am
- First Name: Larry
- Last Name: Smith
- * REQUIRED* Type and Year of Model Ts owned: 13 Touring, 13 Roadster, 17 Coupelet, 25 Roadster P/U
- Location: Lomita, California
- MTFCA Life Member: YES
Re: Thread Count for Crankcase Plug
24 threads is correct. Otis Clinton used to have a tap for that. I wonder if they are available?
-
speedytinc
- Posts: 4725
- Joined: Fri Feb 12, 2021 12:24 pm
- First Name: john
- Last Name: karvaly
- * REQUIRED* Type and Year of Model Ts owned: 14/15 wide track roadster. 23 touring, 27 roadster pickup, 20ish rajo touring
- Location: orange, ca
- Board Member Since: 2020
Re: Thread Count for Crankcase Plug
An old boy made a rethread die out of an old drain plug. The threaded end has 5 or 6 hacksaw cuts that act as cutting edges. It does work & costs nothing but an old knackered plug.
-
TRDxB2
- Posts: 6261
- Joined: Tue Jan 08, 2019 4:56 pm
- First Name: Frank
- Last Name: Brandi
- * REQUIRED* Type and Year of Model Ts owned: Speedsters (1919 w 1926 upgrades), 1926 (Ricardo Head)
- Location: Moline IL
- Board Member Since: 2018
Re: Thread Count for Crankcase Plug
Would this work for you.
- Attachments
-
The past is a great place and I don't want to erase it or to regret it, but I don't want to be its prisoner either.
Mick Jagger
Mick Jagger
-
RajoRacer
- Posts: 5172
- Joined: Sun Jan 06, 2019 12:18 pm
- First Name: Steve
- Last Name: Tomaso
- * REQUIRED* Type and Year of Model Ts owned: 1914 Touring, 1919 Centerdoor, 1924 TT C-Cab Express, 1925 Racer
- Location: Longbranch, WA
- Board Member Since: 2001
Re: Thread Count for Crankcase Plug
I still have that tap of Otis', Larry ! I also have a complete Stevens kit to "oversize" both c.c. and rear axle housing.
-
MWalker
Topic author - Posts: 475
- Joined: Fri Jan 04, 2019 9:49 am
- First Name: Mike
- Last Name: Walker
- * REQUIRED* Type and Year of Model Ts owned: 1916 Roadster Pickup
- Location: NW Arkansas
- MTFCA Life Member: YES
Re: Thread Count for Crankcase Plug
Thanks for all the help. I have one on order.
-
KWTownsend
- Posts: 1382
- Joined: Mon Jan 07, 2019 6:51 pm
- First Name: Keith
- Last Name: Townsend
- * REQUIRED* Type and Year of Model Ts owned: late 1911 touring, 1915 runabout, 1919 touring, brass speedster
- Location: Gresham, Orygun
- MTFCA Life Member: YES
- Board Member Since: 1999
Re: Thread Count for Crankcase Plug
Mike-
Remember, there are a "baffles" on each side of the drain hole. You might need to use a round file or use a Driemle tool to get clearance for the tap.
-Keith
Remember, there are a "baffles" on each side of the drain hole. You might need to use a round file or use a Driemle tool to get clearance for the tap.
-Keith