What is this hole for?
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Topic author - Posts: 436
- Joined: Wed Nov 25, 2020 12:45 pm
- First Name: John
- Last Name: Killelea
- * REQUIRED* Type and Year of Model Ts owned: 1926 Touring, 1927 Tudor, 1925 Touring
- Location: Northport NY
- Board Member Since: 2020
What is this hole for?
Hi All,
I just took off the heavily occupied (mouse nest) radiator of my 27 Tudor and noticed this hole in the front of the block (August 23). Can someone tell me what it's for and do I need to replace what ever was there originally? Belt tensioner?? Thanks,
John
I just took off the heavily occupied (mouse nest) radiator of my 27 Tudor and noticed this hole in the front of the block (August 23). Can someone tell me what it's for and do I need to replace what ever was there originally? Belt tensioner?? Thanks,
John
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- Posts: 5370
- Joined: Sat Jan 05, 2019 1:57 pm
- First Name: Mark
- Last Name: Gregush
- * REQUIRED* Type and Year of Model Ts owned: 1925 cutdown PU, 1948 F2 Ford flat head 6 pickup 3 speed
- Location: Portland Or
- Board Member Since: 1999
Re: What is this hole for?
The fan and pulley.
I know the voices aren't real but damn they have some good ideas!
1925 Cut down pickup
1948 Ford F2 pickup

1925 Cut down pickup
1948 Ford F2 pickup
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- Posts: 655
- Joined: Wed Jun 17, 2020 1:41 pm
- First Name: Kevin
- Last Name: Matthiesen
- * REQUIRED* Type and Year of Model Ts owned: 26 T Coupe, 16 T Open Express, 21 TT Flatbed. 15 T Roadster, 13 & 25 T Speedster’s,51 Mercury 4 door sport sedan, 67 Mercury Cougar
- Location: Madera CA 93636
Re: What is this hole for?
That hole and the boss with the bolt next to the hole were used for the fan bracket and fan belt adjustment on a pre 1926 T. Your 1927 car would have used a timing gear cover with out that hole or boss from the factory. I assume your 27 car is using a 27 fan, mounted on the head water outlet to raditor.
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- Posts: 71
- Joined: Sun Jan 06, 2019 1:21 pm
- First Name: Bill
- Last Name: Coyle
- * REQUIRED* Type and Year of Model Ts owned: 26 Roadster
- Location: Port Clinton, OH
Re: What is this hole for?
Adding to what Kevin and Mark said. Your 27 T should have the fan and pulley mounted to the water outlet that bolts to the cylinder head. The belt adjustment is made by turning the eccentric which holds the pulley shaft.
Bill Coyle
Bill Coyle
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Topic author - Posts: 436
- Joined: Wed Nov 25, 2020 12:45 pm
- First Name: John
- Last Name: Killelea
- * REQUIRED* Type and Year of Model Ts owned: 1926 Touring, 1927 Tudor, 1925 Touring
- Location: Northport NY
- Board Member Since: 2020
Re: What is this hole for?
Thanks so much for the comments. The engine is a 23 in the 27 Tudor. It has the fan attached to the water outlet pipe. Now I know. Thanks.
John
John
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- Posts: 3743
- Joined: Sun Jan 06, 2019 10:53 am
- First Name: Tim
- Last Name: Wrenn
- * REQUIRED* Type and Year of Model Ts owned: '13 Touring, '26 "Overlap" Fordor
- Location: Ohio
- Board Member Since: 2019
Re: What is this hole for?
That is one interesting looking timer. Be sure to open it up and inspect and clean it and even make sure it'll work!!
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- 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: What is this hole for?
The late 26, 27 cam covers do not have the boss with bolt for fan bracket adjusting as mentioned. They still have the large hole take 1/2" fine bolt.
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- Posts: 5171
- 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: What is this hole for?
Recto Timer - I've seen an ad for that one somewhere.
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- Posts: 7237
- Joined: Fri Jan 04, 2019 9:37 pm
- First Name: Steve
- Last Name: Jelf
- * REQUIRED* Type and Year of Model Ts owned: 1923 touring and a few projects
- Location: Parkerfield, Kansas
- Board Member Since: 2007
- Contact:
Re: What is this hole for?
One of the many aftermarket timers to go with the many, many, many aftermarket spark plugs. 

The inevitable often happens.
1915 Runabout
1923 Touring
1915 Runabout
1923 Touring