Overhead installation

Discuss all things Model T related.
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

Topic author
Ralph F
Posts: 138
Joined: Wed Jan 09, 2019 7:09 pm
First Name: Ralph
Last Name: Fitz-Gerald
Location: Monkton, Vermont

Overhead installation

Post by Ralph F » Tue Jan 25, 2022 11:12 am

I have an Roof Overhead that I what to install in 1920 roadster. I know need to cut the firewalls and I am looking for suggestions
Thanks


speedytinc
Posts: 3840
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
MTFCA Number: 14383
Board Member Since: 2020

Re: Overhead installation

Post by speedytinc » Tue Jan 25, 2022 11:39 am

Not necessarily.
I have a 20 touring with a rajo. The builder moved the BODY back 2" Hood extended. Hood shelves are wood. Steering frame mount back.
Fenders are not moved. Rear fenders are close to the doors, but fit. Subtle. Firewall uncut. I call it the monster. Frankenstein's monster.


Dan McEachern
Posts: 1180
Joined: Sun Jan 06, 2019 11:08 am
First Name: DAN
Last Name: MCEACHERN
* REQUIRED* Type and Year of Model Ts owned: too many. '14 touring, 2 depot hacks, 2 speedsters
Location: ALAMEDA,CA,USA

Re: Overhead installation

Post by Dan McEachern » Tue Jan 25, 2022 12:57 pm

Hank Lee posted some pictures in the past showing how he moved the existing firewall "hump" vertically and then added material below that to give clearance for a head. Perhaps he will repost those here. Obviously you loose your coil box, but....

User avatar

Henry K. Lee
Posts: 5339
Joined: Sun Jan 06, 2019 11:09 am
First Name: Henry
Last Name: Lee
* REQUIRED* Type and Year of Model Ts owned: Many
Location: South Pittsburg, TN
MTFCA Number: 479
MTFCA Life Member: YES

Re: Overhead installation

Post by Henry K. Lee » Tue Jan 25, 2022 1:08 pm

If you want to use an original coil box.., just dish more for the insulator(s) clearance! Been there done that!

Hank


IMG_6446.jpeg
IMG_6454.jpeg
Attachments
IMG_6454.jpeg
IMG_6446.jpeg


Les Schubert
Posts: 1311
Joined: Thu Jan 10, 2019 5:47 pm
First Name: Les
Last Name: Schubert
* REQUIRED* Type and Year of Model Ts owned: 27 roadster 13 touring
Location: Calgary

Re: Overhead installation

Post by Les Schubert » Tue Jan 25, 2022 1:40 pm

I had no problems installing the Roof 8 ohv on my 26-7 4 door. Yes I had to install a flexible choke cable and adjusting the mixture was no longer possible from the dash. And yes it needs a fuel pump!
The 4 door of course has the fuel tank under the seat (the same as yours). A cowl mounted gas tank would likely be a problem, but I haven’t looked at it.


Les Schubert
Posts: 1311
Joined: Thu Jan 10, 2019 5:47 pm
First Name: Les
Last Name: Schubert
* REQUIRED* Type and Year of Model Ts owned: 27 roadster 13 touring
Location: Calgary

Re: Overhead installation

Post by Les Schubert » Tue Jan 25, 2022 1:43 pm

32A49CE8-D6FD-427B-A059-5733189B18DC.jpeg
You can see that the head really doesn’t extend past the rear head bolt!

User avatar

Rich Eagle
Posts: 6796
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
MTFCA Number: 1219
Contact:

Re: Overhead installation

Post by Rich Eagle » Tue Jan 25, 2022 2:12 pm

I made a wooden firewall for my Roof in my speedster and gave room for the cover to be removed.
RoofSpdstr.jpg
P. S. Nice work Henry.
When did I do that?

User avatar

Mark Gregush
Posts: 4957
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, 1920 Dodge touring, 1948 F2 Ford flat head 6 pickup 3 speed
Location: Portland Or
MTFCA Number: 52564
Board Member Since: 1999

Re: Overhead installation

Post by Mark Gregush » Wed Jan 26, 2022 12:04 pm

Nice clean engine compartment, well laid out Rich!
I know the voices aren't real but damn they have some good ideas! :shock:

1925 Cut down pickup
1920 Dodge touring
1948 Ford F2 pickup

User avatar

22centerdoor
Posts: 30
Joined: Mon Jan 07, 2019 6:01 pm
First Name: David
Last Name: Stauffacher
* REQUIRED* Type and Year of Model Ts owned: 1922 Centerdoor
Location: Monroe, Wisconsin
MTFCA Number: 31
MTFCA Life Member: YES
Board Member Since: 2005

Re: Overhead installation

Post by 22centerdoor » Fri Jan 28, 2022 12:58 am

I did the same as Hank. Had a local hot rod metal shop put recess in metal firewall. Looks really professional and almost "factory". I run a dizzy, so coils removed leaving more room for recess.

Dave


Topic author
Ralph F
Posts: 138
Joined: Wed Jan 09, 2019 7:09 pm
First Name: Ralph
Last Name: Fitz-Gerald
Location: Monkton, Vermont

Re: Overhead installation

Post by Ralph F » Mon Jan 31, 2022 12:16 pm

Gentleman thanks for the reply with good information. Now I have a few questions.
Richard what year ford did you make the wooden fire wall for?
Speedy I have learned that once changes dictates 10 more. Were there any changes to how the pedals and hand lever came thru the floor boards?
Henry the Roof Liberty Eight does extend behind the block and prevents the firewall from sitting down properly.
I would prefer not to cut the fire wall but that make be the route I take.
Thanks again
Ralph

User avatar

Rich Eagle
Posts: 6796
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
MTFCA Number: 1219
Contact:

Re: Overhead installation

Post by Rich Eagle » Mon Jan 31, 2022 12:38 pm

Ralph, my speedster is a 1920.
Rich
When did I do that?


noelchico
Posts: 191
Joined: Tue Jan 08, 2019 10:42 pm
First Name: Noel
Last Name: Chicoine
* REQUIRED* Type and Year of Model Ts owned: 1920 roadster, 1923 Touring, 1926 Coupe
Location: Pierre, South Dakota
MTFCA Number: 25420
MTFCI Number: 22686
Board Member Since: 2005

Re: Overhead installation

Post by noelchico » Mon Jan 31, 2022 2:21 pm

I'm contemplating installing a RAJO C-35 in my '26 coupe. I suspect I'll need to modify the firewall but wonder if I can "easily" run my coilbox and coils.


Kerry
Posts: 1297
Joined: Mon Jan 07, 2019 2:42 pm
First Name: Frank
Last Name: van Ekeren
* REQUIRED* Type and Year of Model Ts owned: 1916 touring, 1916 pick-up, 1924 coupe, 1926 touring, 1927 touring
Location: Rosedale Vic Australia

Re: Overhead installation

Post by Kerry » Mon Jan 31, 2022 4:37 pm

Noel, not much room between the firewall and fuel tank, the Rajo rocker cover was modified to clear on the 26/7 fire wall. I removed my head as the cover dosen't seal up and stink of oil fumes.


speedytinc
Posts: 3840
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
MTFCA Number: 14383
Board Member Since: 2020

Re: Overhead installation

Post by speedytinc » Tue Feb 01, 2022 8:29 am

Ralph F wrote:
Mon Jan 31, 2022 12:16 pm
Gentleman thanks for the reply with good information. Now I have a few questions.
Richard what year ford did you make the wooden fire wall for?
Speedy I have learned that once changes dictates 10 more. Were there any changes to how the pedals and hand lever came thru the floor boards?
Henry the Roof Liberty Eight does extend behind the block and prevents the firewall from sitting down properly.
I would prefer not to cut the fire wall but that make be the route I take.
Thanks again
Ralph
Floor board slots extended. Brake lever in stock position. Pedals are bent back about an inch, heated above the cams. "The Monster"

Post Reply Previous topicNext topic