camshaft gear wear
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Topic author - Posts: 33
- Joined: Mon Jan 07, 2019 9:50 am
- First Name: John
- Last Name: Manuel
- * REQUIRED* Type and Year of Model Ts owned: 1923 RPU
- Location: Lafayette , La.
camshaft gear wear
Been fighting a poor running T for some time now and having : Rebuilt coil box, rebuilt coils (two different sets), rebuilt carbs (two different ones), new wiring harness, new tank, rebuilt switch, adjusted valves, three different timers, new plugs two or three times and different gaps, changed head gasket and manifold gaskets, and I can't even remember what all, I pulled the cover off of the cam gear and found that I could slip .017 shim stock between the big and small gears and there is a good bit of movement front to back on the camshaft itself. In addition, when it would run, it was very noisy down front. Have I found the trouble?
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- Posts: 4092
- Joined: Tue Jan 08, 2019 1:39 pm
- First Name: Norman
- Last Name: Kling
- Location: Alpine California
Re: camshaft gear wear
The wear in the teeth, would probably not be so noticeable in the running, however the front to back movement would affect the timer. You need to replace the bearings, especially the front bearing on the camshaft. That might eliminate the slop in the gears, but if it does not, then replace at least the camshaft gear.
Norm
Norm
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Topic author - Posts: 33
- Joined: Mon Jan 07, 2019 9:50 am
- First Name: John
- Last Name: Manuel
- * REQUIRED* Type and Year of Model Ts owned: 1923 RPU
- Location: Lafayette , La.
Re: camshaft gear wear
Thanks for the input. I ordered the thrust kit, a new .003 over cam gear and a generator gear. Think I should get the bearings too?
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- Posts: 339
- Joined: Sun Jan 06, 2019 5:25 pm
- First Name: John
- Last Name: Saylor
- * REQUIRED* Type and Year of Model Ts owned: 1921 Touring, 1927 Tudor
- Location: Citrus Heights, Ca
- MTFCA Number: 1695
- MTFCI Number: 23870
- Board Member Since: 1999
Re: camshaft gear wear
Also check the bolt that holds the front cam bearing in the block. If the end of the bolt that fits into the cam bearing is not a tight fit, then the cam bearing and the cam can move fore and aft causing a hard to find knock.
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Topic author - Posts: 33
- Joined: Mon Jan 07, 2019 9:50 am
- First Name: John
- Last Name: Manuel
- * REQUIRED* Type and Year of Model Ts owned: 1923 RPU
- Location: Lafayette , La.
Re: camshaft gear wear
Thanks, I will take a look at that.
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- Posts: 1301
- 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: camshaft gear wear
Compression test?
Also unless things have changed, haven't been able to buy cam bearings for a while, is someone doing them again?
Also unless things have changed, haven't been able to buy cam bearings for a while, is someone doing them again?
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Topic author - Posts: 33
- Joined: Mon Jan 07, 2019 9:50 am
- First Name: John
- Last Name: Manuel
- * REQUIRED* Type and Year of Model Ts owned: 1923 RPU
- Location: Lafayette , La.
Re: camshaft gear wear
Kerry, yes about 45-50 psi per cylinder. Some time will free start but runs terribly and spark advance has erratic effect. For a while it ran rather poorly and worse as it warmed up. Now it is just terrible and will barely pull itself. I bought it about 3 years ago and always felt there was something wrong but could not tell what. Just kept getting worse and I finally decided I had to fix it or get rid of it. If this doesn't do it I will put it on a trailer and get it to Ross Lilleker.
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- Posts: 1706
- Joined: Sun Jan 06, 2019 12:23 pm
- First Name: Jeff
- Last Name: Humble
- * REQUIRED* Type and Year of Model Ts owned: 1926 Canadian built coupe, 1924 TT C-cab, survivor 1924 roadster
- Location: Charlevoix, Mi
- MTFCA Number: 28034
- Board Member Since: 2006
Re: camshaft gear wear
Those gears will get noisy when they wear, will eventually knock like a bad connecting rod. I see new gears in your future.
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- Posts: 339
- Joined: Sun Jan 06, 2019 5:25 pm
- First Name: John
- Last Name: Saylor
- * REQUIRED* Type and Year of Model Ts owned: 1921 Touring, 1927 Tudor
- Location: Citrus Heights, Ca
- MTFCA Number: 1695
- MTFCI Number: 23870
- Board Member Since: 1999
Re: camshaft gear wear
Dude & Son, Yuba City, a, does cam bearings as well as other T babbitting. See their add in the Vintage Ford.
greenbeanmachine128@gmail.com
greenbeanmachine128@gmail.com