Model R Odyssey

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Topic author
Robert Kiefaber
Posts: 56
Joined: Tue Mar 05, 2019 3:38 pm
First Name: Bob
Last Name: Kiefaber
* REQUIRED* Type and Year of Model Ts owned: 1906 model F, 1907 model R, 1915 centerdoor sedan, 1921 centerdoor sedan
Location: Indiana

Model R Odyssey

Post by Robert Kiefaber » Thu May 19, 2022 6:51 pm

B43DD43B-EDC9-4C29-94C8-1461385A5E12.jpeg
Trying to get this model R running. I’ve had it for about 4 years now and have done the following:

- Had the original radiator re-cored with a new Brassworks
core.
- rebuilt coils by (RIP) Rv Anderson.
- Have original carb and new rebuilt Holley nh
- commutator cleaned and new wiring.
- pulled the jugs and put new gaskets in.
- lapped the valves.
- checked compression. Which varies from 15lbs to 20lbs.
Etc….
I have tried cranking it by hand and only got a sneeze after several attempts. My wife pulled me around the block with the Jeep a few times and it my have started and died but it didn’t last long enough for my to really know.
I’m at my wits end trying to figure this out.
One thing I’m not sure of is the valve stems all have removable lifters plugs that sits inside the bronze bushing on top of the tappers ( see photos below ). Is this normal?
I was going to post on the Early Ford Register (which I belong to) but lost my password.
Thanks.
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Last edited by Robert Kiefaber on Thu May 19, 2022 7:01 pm, edited 1 time in total.


speedytinc
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Re: Model R Odyssey

Post by speedytinc » Thu May 19, 2022 7:00 pm

I know nothing of R's, but 15-20# compression!??. That cant be except-able? Could you have a bad timing issue? Leave the rings out? I dont think a model T would run with that low compression. Model t compression is 50-55#


Topic author
Robert Kiefaber
Posts: 56
Joined: Tue Mar 05, 2019 3:38 pm
First Name: Bob
Last Name: Kiefaber
* REQUIRED* Type and Year of Model Ts owned: 1906 model F, 1907 model R, 1915 centerdoor sedan, 1921 centerdoor sedan
Location: Indiana

Re: Model R Odyssey

Post by Robert Kiefaber » Thu May 19, 2022 7:03 pm

Checked and re-checked timing over and over and it seems ok.


speedytinc
Posts: 3840
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Location: orange, ca
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Re: Model R Odyssey

Post by speedytinc » Thu May 19, 2022 7:16 pm

Robert Kiefaber wrote:
Thu May 19, 2022 7:03 pm
Checked and re-checked timing over and over and it seems ok.
Yea, but you have no compression. By checked timing you looked @ when the valves open & close in relation to piston position? & the valves are fully seated?
Did you diagram/document the event degrees? Its a good idea to do this for all cylinders.


Topic author
Robert Kiefaber
Posts: 56
Joined: Tue Mar 05, 2019 3:38 pm
First Name: Bob
Last Name: Kiefaber
* REQUIRED* Type and Year of Model Ts owned: 1906 model F, 1907 model R, 1915 centerdoor sedan, 1921 centerdoor sedan
Location: Indiana

Re: Model R Odyssey

Post by Robert Kiefaber » Thu May 19, 2022 7:30 pm

I checked the timing by the piston travel method as described in my the model T engine book. I have also tried both carbs. It does seem to me like it does not get enough gas into the jugs. I have inspected the intake manifold for blockage and have installed new gaskets.


TXGOAT2
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Re: Model R Odyssey

Post by TXGOAT2 » Thu May 19, 2022 9:13 pm

Is the valve clearance set correctly?

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FreighTer Jim
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Model R Odyssey

Post by FreighTer Jim » Thu May 19, 2022 9:44 pm

You might want to call Mark Atkins
in Richmond, Indiana.

I don’t know how busy he is
but I would take your car to him.

Call me if you want his number.

FJ
260-804-6695
Google “ Model T Transport “
MTFCA - MTFCI - MAFCA Member


Kevin Pharis
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Re: Model R Odyssey

Post by Kevin Pharis » Thu May 19, 2022 9:51 pm

Check compression again... this time take all the plugs out and spin the motor several revolutions as fast as you can. 1/4 turn pulls never seem to read good numbers.

It wouldn’t surprise me if the compression really is low. You stated “lapped valves”, a valves ability to seal is a result of spring force and valve seat surface area. As the seats wear they get wider, as they get wider they require more spring pressure to seal properly


Topic author
Robert Kiefaber
Posts: 56
Joined: Tue Mar 05, 2019 3:38 pm
First Name: Bob
Last Name: Kiefaber
* REQUIRED* Type and Year of Model Ts owned: 1906 model F, 1907 model R, 1915 centerdoor sedan, 1921 centerdoor sedan
Location: Indiana

Re: Model R Odyssey

Post by Robert Kiefaber » Thu May 19, 2022 11:25 pm

Txgoat, I just went with the model t settings.

Jim, thanks I’m in Indiana and that would be great. I’ll give you a call.

Kevin, that is very interesting. Would I need longer springs?


Kevin Pharis
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Location: Sacramento CA

Re: Model R Odyssey

Post by Kevin Pharis » Fri May 20, 2022 12:10 am

Robert Kiefaber wrote:
Thu May 19, 2022 11:25 pm
Kevin, that is very interesting. Would I need longer springs?
New springs of the correct length, maybe. But only if the originals are noticeably bent or have lost tension. Bent springs can cause valves to react slowly, and weak springs cause poor sealing. Either can make a good motor run bad. A motor with good sealing valves will start quickly and run strong

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