The Ford Barn

38Tudor · 09-23-2014, 09:19 PM

I'm looking into changing my timing (cam/crank) gears. I've seen fiber and aluminum. Which type is recommended? Pros and cons.
Thanks.

Richard in Florida · 09-23-2014, 09:31 PM

Quote:

Originally Posted by 38Tudor

I'm looking into changing my timing (cam/crank) gears. I've seen fiber and aluminum. Which type is recommended? Pros and cons.
Thanks.

Aluminum will last longer but it's noisier than fiber.

flatjack9 · 09-23-2014, 09:55 PM

I seriously doubt if you would be able to hear the difference. Go aluminum.

JM 35 Sedan · 09-23-2014, 10:13 PM

I went with an aluminum press on timing gear after a repro fiber gear failed in about 1500 miles. I don't hear any noticable difference in noise, but then my hearing is not all that good

. The good news is that aluminum gear has given me 20k+ trouble free miles and still going. I would recommend going aluminum on the timing gear. Why are you thinking about replacing the crank gear?

38Tudor · 09-23-2014, 10:33 PM

Quote:

Originally Posted by JM 35 Sedan

Why are you thinking about replacing the crank gear?

I don't know. I just figured I will change both while I'm in there.
I have a bad whining sound going on. As heard in this video.

https://drive.google.com/file/d/0B-y...it?usp=sharing

Henry/Kokomo · 09-23-2014, 10:50 PM

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I'd check the condition of the crank gear before I made the decision to replace or not. Would definitely go with the aluminum gear.

I played the video. Does the car make the same whining noise when not in motion?

WestCoast · 09-23-2014, 11:08 PM

go aluminum, I doubt if you can find an American made fiber cam gear, the Chinese stuff is worse than junk, they become oil soaked quick and soften and loose teeth off the gear

49r · 09-24-2014, 02:48 AM

Aluminum works for me. Slightly noisier at idle, but doesn't sound out of place.

38Tudor · 09-24-2014, 06:11 AM

Quote:

Originally Posted by Henry/Kokomo

I played the video. Does the car make the same whining noise when not in motion?

Yes same noise parked and with the fan belt off

jimTN · 09-24-2014, 06:41 AM

Alumn only. the fiber gears sold today are defective and will come apart.

hardtimes · 09-24-2014, 12:49 PM

Quote:

Originally Posted by 38Tudor

I'm looking into changing my timing (cam/crank) gears. I've seen fiber and aluminum. Which type is recommended? Pros and cons.
Thanks.

You will hear..but their nosier , but do not believe it , as old wives tale

!
Maybe you would / should check out a guy named Dan Mc Eachern. He MAKES gears, and they are like jewelry ! He makes the cam and crank gears matched ! He makes the crank gear of steel not iron ! And, he makes a bronze cam gear with matching crank gear(what I got).
I run aluminum, NO noise. I kinda wish and expected that there would be noise ...it's a guy thing,eh

BTW..when running gears straight cut, yeah expect noise. But most today are not made that way.

Ol' Ron · 09-24-2014, 01:28 PM

Never saw a bad crank gear. Wouldn't know how to remove on in the engine.

supereal · 09-24-2014, 04:24 PM

If the noise is present with the belt off, but changes pitch as the engine speed is changed, I'd check the clutch pedal free play to be sure the noise isn't coming from the release bearing. You need at least an inch of free play

36tbird · 09-25-2014, 08:37 AM

Another thought while you're in there: take out the galley plug and drill a .046" hole or so for oil to spray the back side of the gears. I think I saw this in one of the Aussie rebuild books and I did it on my 8BA. With that, I still have 50 pounds of pressure running down the road with 40 wt. and M19.

rhpope · 09-25-2014, 09:31 AM

Does anyone still sell new aluminum press on gears or do you just have to search and hope to find a good used one or a NOS one?

09-23-2014, 09:19 PM	#1
38Tudor Member Join Date: Aug 2014 Location: Illinois Posts: 95	Fiber or Aluminum I'm looking into changing my timing (cam/crank) gears. I've seen fiber and aluminum. Which type is recommended? Pros and cons. Thanks. __________________ "Thrifty Sixty" Ford V8 for 1938

09-23-2014, 09:55 PM	#3
flatjack9 Senior Member Join Date: May 2010 Location: Oshkosh, Wi Posts: 4,608	Re: Fiber or Aluminum I seriously doubt if you would be able to hear the difference. Go aluminum.

09-23-2014, 10:13 PM	#4
JM 35 Sedan Senior Member Join Date: May 2010 Location: Near Rising Sun, Maryland Posts: 10,876	Re: Fiber or Aluminum I went with an aluminum press on timing gear after a repro fiber gear failed in about 1500 miles. I don't hear any noticable difference in noise, but then my hearing is not all that good . The good news is that aluminum gear has given me 20k+ trouble free miles and still going. I would recommend going aluminum on the timing gear. Why are you thinking about replacing the crank gear? __________________ *John* *"Never give up on what you really want to do. The person with big dreams is more powerful than one with all the facts". Albert Einstein*

09-23-2014, 10:50 PM	#6
Henry/Kokomo Senior Member Join Date: May 2010 Location: Kokomo, Indiana Posts: 1,731	Re: Fiber or Aluminum Sponsored Links (Register now to hide all advertisements) I'd check the condition of the crank gear before I made the decision to replace or not. Would definitely go with the aluminum gear. I played the video. Does the car make the same whining noise when not in motion? __________________ Henry

09-23-2014, 11:08 PM	#7
WestCoast Senior Member Join Date: Sep 2014 Location: oroville calif Posts: 892	Re: Fiber or Aluminum go aluminum, I doubt if you can find an American made fiber cam gear, the Chinese stuff is worse than junk, they become oil soaked quick and soften and loose teeth off the gear

09-24-2014, 02:48 AM	#8
49r Senior Member Join Date: Jul 2011 Location: Wellington New Zealand Posts: 309	Re: Fiber or Aluminum Aluminum works for me. Slightly noisier at idle, but doesn't sound out of place.

09-24-2014, 06:41 AM	#10
jimTN Senior Member Join Date: May 2010 Location: Powell, TN Posts: 2,645	Re: Fiber or Aluminum Alumn only. the fiber gears sold today are defective and will come apart.

09-24-2014, 01:28 PM	#12
Ol' Ron Senior Member Join Date: May 2010 Location: Chester Vt Posts: 8,985	Re: Fiber or Aluminum Never saw a bad crank gear. Wouldn't know how to remove on in the engine.

09-24-2014, 04:24 PM	#13
supereal Senior Member Join Date: Jul 2014 Location: Iowa Posts: 1,634	Re: Fiber or Aluminum If the noise is present with the belt off, but changes pitch as the engine speed is changed, I'd check the clutch pedal free play to be sure the noise isn't coming from the release bearing. You need at least an inch of free play

09-25-2014, 08:37 AM	#14
36tbird Senior Member Join Date: May 2010 Location: nw SanAntonio, TX Posts: 940	Re: Fiber or Aluminum Another thought while you're in there: take out the galley plug and drill a .046" hole or so for oil to spray the back side of the gears. I think I saw this in one of the Aussie rebuild books and I did it on my 8BA. With that, I still have 50 pounds of pressure running down the road with 40 wt. and M19.

09-25-2014, 09:31 AM	#15
rhpope Junior Member Join Date: Aug 2010 Location: North Carolina Posts: 23	Re: Fiber or Aluminum Does anyone still sell new aluminum press on gears or do you just have to search and hope to find a good used one or a NOS one?