The Ford Barn

34 FORDOR · 11-09-2011, 02:51 AM

I have rebuilt the 37 engine in my 34 fordor, new mounts all round, but have a harshness / vibration through the the body and frame. Pulled the engine, rechecked everything and completely balanced the rotating assembly.Many hours and dollars later the result, an improvement but still not smooth. After several sleepless nights and phone calls, I removed the trans mount bolts and lifted the transmission just off the frame, instant success. I removed the mount and compared it with an old original one, the rubber ? is real hard. ( Chinese rubbish ?) ordered another from a different supplier,same problem. Any one else had trouble with these ? Where can I purchase a good quality mount, soft , live rubber as Henry made them ?

1931 flamingo · 11-09-2011, 08:32 AM

If I remember correctly, the one's I got in the late 60's were "hard".
Paul in CT

JM 35 Sedan · 11-09-2011, 09:07 AM

I'm not so sure that you want the rubber in that mount to be real soft. Also not so sure that lifting the mount off the frame means the problem is definitely in the rear mount. You could be just isolating the vibration away from the frame making you think the mount is the problem. JMO

David J · 11-09-2011, 09:16 AM

Sounds like you have metal to metal contact in or on your rear mount . Are you running 37 type waterpumps ? If yes do you have spacers to get the motor sitting right ? Just guessing here as I have never had this problem . Even the slightest metal to metal contact in the mount will be REAL NOTICEABLE & datz NOT a guess .

rotorwrench · 11-09-2011, 09:45 AM

There could be vibration coming from the driveshaft or other rotating components. Engine steady rods also need to be adjusted for tension.

Most of the engine front or rear mounts get soft because of age and exposure to old lubricant and the elements. New ones were suposed to be firm in order to cancel vibration without moving around too much. The steady rods control the forward movement under load.

Kerby

FlatheadTed · 11-09-2011, 02:52 PM

Sponsored Links (Register now to hide all advertisements)

33/34 at times had some vibration issues in the drive shaft one of Fords fixes was to pump a tube or 2 of grease in the U joint ,

Lawrie · 11-09-2011, 05:06 PM

I have spent hrs and hrs on my 33 to get it smooth,
When I say hours I mean hundreds
Here is what finally worked
Balance all parts in the eng,flywheel etc
New gearbox bearings
new old stock u/joint,
new dick spadaro driveshaft.
new engine mounts.
balance the u/joint assy.(made a mandrel for the machine shop)
balance the d/shaft
fit all new bearings to the rear end.
fit 46 ring and pinion 3.78
fit new tyres and balance wheels
fit new front wheel bearings
select fit the front driveshaft bearings and sleave(NOS) to give .004 up and down play
I had done lots of the above previously,but feel the thing that made the difference was the driveshaft and the front bearing .
Lawrie

34 FORDOR · 11-10-2011, 03:01 PM

Thanks for the suggestions and thoughts. Engine mounted correct with u shaped adaptors on front. Tried running without stabilizer bars, this gave a very slight improvement. Harshness / vibration is there when stationary and revving engine around 2500rpm + and on road as engine revs increase. Have checked out several old trans mounts 33-34 and 35-36 , even in the center well away from oil grease etc ,all appear to made with a soft rubber compound. Away on vacation for 2 weeks so this project will be on hold for a little while.

David J · 11-10-2011, 06:39 PM

Couple things on the stationary test to ponder , If you had the car in gear with the clutch depressed you eliminated the clutch disc & tranny from the cause as they are stationary . Throwout bearing is loaded . If you had the car in neutral with the clutch engaged you were also spinning the clutch disc & most of the tranny gears . Throwout bearing is unloaded & the tranny mainshaft is still stationary . Did you happen to change the flywheel or pressure plate ? Looks to me like your problem isn't in the driveline . -------------------------------------------[QUOTE=34 FORDOR;304226] Harshness / vibration is there when stationary and revving engine around 2500rpm + and on road as engine revs increase.[/QUOTE]

FlatheadTed · 11-10-2011, 07:08 PM

Clutch & companies like Davide says

Charlie ny · 11-10-2011, 07:28 PM

34,
If things shake out and you are sure the problem is the rear
mount I have some real nice script '33 - '34 rear mounts...they are used
but in great shape.
Charlie ny
[email protected]
PS
To me it sounds like you have bind in the drive train.
Remove the carb and lay a level on the carb face on
the intake....technically speaking the rear of the motor
should be a tad lower than the front....just a tad.

jimvette59 · 11-10-2011, 08:13 PM

Steady Rods. Are called anti chatter rods.

rotorwrench · 11-10-2011, 08:14 PM

Any thing that rotates can get out of balance including fans and water pumps. All you have to do there is run it without the belt to check. Some of these old Fords may have had some parts machined off square too. Alignment can be checked but it takes a lot of fussing with the stuff while it's appart. FoMoCo machine operators did make some mistakes in this respect just like any other manufacturer but luckily not too many.

Kerby

11-09-2011, 02:51 AM	#1
34 FORDOR Member Join Date: Jul 2010 Location: Canterbury, New Zealand Posts: 95	34 ford transmission mount I have rebuilt the 37 engine in my 34 fordor, new mounts all round, but have a harshness / vibration through the the body and frame. Pulled the engine, rechecked everything and completely balanced the rotating assembly.Many hours and dollars later the result, an improvement but still not smooth. After several sleepless nights and phone calls, I removed the trans mount bolts and lifted the transmission just off the frame, instant success. I removed the mount and compared it with an old original one, the rubber ? is real hard. ( Chinese rubbish ?) ordered another from a different supplier,same problem. Any one else had trouble with these ? Where can I purchase a good quality mount, soft , live rubber as Henry made them ?

11-09-2011, 08:32 AM	#2
1931 flamingo Senior Member Join Date: May 2010 Location: new britain,ct 06052 Posts: 9,390	Re: 34 ford transmission mount If I remember correctly, the one's I got in the late 60's were "hard". Paul in CT

11-09-2011, 09:07 AM	#3
JM 35 Sedan Senior Member Join Date: May 2010 Location: Near Rising Sun, Maryland Posts: 10,858	Re: 34 ford transmission mount I'm not so sure that you want the rubber in that mount to be real soft. Also not so sure that lifting the mount off the frame means the problem is definitely in the rear mount. You could be just isolating the vibration away from the frame making you think the mount is the problem. JMO __________________ *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*

11-09-2011, 09:16 AM	#4
David J Senior Member Join Date: Jun 2010 Location: St Croix Falls WI Posts: 2,080	Re: 34 ford transmission mount Sounds like you have metal to metal contact in or on your rear mount . Are you running 37 type waterpumps ? If yes do you have spacers to get the motor sitting right ? Just guessing here as I have never had this problem . Even the slightest metal to metal contact in the mount will be REAL NOTICEABLE & datz NOT a guess .

11-09-2011, 09:45 AM	#5
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,436	Re: 34 ford transmission mount There could be vibration coming from the driveshaft or other rotating components. Engine steady rods also need to be adjusted for tension. Most of the engine front or rear mounts get soft because of age and exposure to old lubricant and the elements. New ones were suposed to be firm in order to cancel vibration without moving around too much. The steady rods control the forward movement under load. Kerby

11-09-2011, 02:52 PM	#6
FlatheadTed Senior Member Join Date: May 2010 Location: Auckland Posts: 4,705	Re: 34 ford transmission mount Sponsored Links (Register now to hide all advertisements) 33/34 at times had some vibration issues in the drive shaft one of Fords fixes was to pump a tube or 2 of grease in the U joint , __________________ http://www.flatheadted.com Flathead Ted brake Floaters ,

11-09-2011, 05:06 PM	#7
Lawrie Senior Member Join Date: May 2010 Location: Qld, Australia Posts: 4,215	Re: 34 ford transmission mount I have spent hrs and hrs on my 33 to get it smooth, When I say hours I mean hundreds Here is what finally worked Balance all parts in the eng,flywheel etc New gearbox bearings new old stock u/joint, new dick spadaro driveshaft. new engine mounts. balance the u/joint assy.(made a mandrel for the machine shop) balance the d/shaft fit all new bearings to the rear end. fit 46 ring and pinion 3.78 fit new tyres and balance wheels fit new front wheel bearings select fit the front driveshaft bearings and sleave(NOS) to give .004 up and down play I had done lots of the above previously,but feel the thing that made the difference was the driveshaft and the front bearing . Lawrie

11-10-2011, 03:01 PM	#8
34 FORDOR Member Join Date: Jul 2010 Location: Canterbury, New Zealand Posts: 95	Re: 34 ford transmission mount Thanks for the suggestions and thoughts. Engine mounted correct with u shaped adaptors on front. Tried running without stabilizer bars, this gave a very slight improvement. Harshness / vibration is there when stationary and revving engine around 2500rpm + and on road as engine revs increase. Have checked out several old trans mounts 33-34 and 35-36 , even in the center well away from oil grease etc ,all appear to made with a soft rubber compound. Away on vacation for 2 weeks so this project will be on hold for a little while.

11-10-2011, 06:39 PM	#9
David J Senior Member Join Date: Jun 2010 Location: St Croix Falls WI Posts: 2,080	Re: 34 ford transmission mount Couple things on the stationary test to ponder , If you had the car in gear with the clutch depressed you eliminated the clutch disc & tranny from the cause as they are stationary . Throwout bearing is loaded . If you had the car in neutral with the clutch engaged you were also spinning the clutch disc & most of the tranny gears . Throwout bearing is unloaded & the tranny mainshaft is still stationary . Did you happen to change the flywheel or pressure plate ? Looks to me like your problem isn't in the driveline . -------------------------------------------[QUOTE=34 FORDOR;304226] Harshness / vibration is there when stationary and revving engine around 2500rpm + and on road as engine revs increase.[/QUOTE] Last edited by David J; 11-10-2011 at 06:41 PM. Reason: reel bad spelen

11-10-2011, 07:08 PM	#10
FlatheadTed Senior Member Join Date: May 2010 Location: Auckland Posts: 4,705	Re: 34 ford transmission mount Clutch & companies like Davide says __________________ http://www.flatheadted.com Flathead Ted brake Floaters ,

11-10-2011, 07:28 PM	#11
Charlie ny BANNED Join Date: May 2010 Posts: 3,019	Re: 34 ford transmission mount 34, If things shake out and you are sure the problem is the rear mount I have some real nice script '33 - '34 rear mounts...they are used but in great shape. Charlie ny [email protected] PS To me it sounds like you have bind in the drive train. Remove the carb and lay a level on the carb face on the intake....technically speaking the rear of the motor should be a tad lower than the front....just a tad.

11-10-2011, 08:13 PM	#12
jimvette59 Senior Member Join Date: Jun 2010 Location: Perry OH Posts: 1,330	Re: 34 ford transmission mount Steady Rods. Are called anti chatter rods.

11-10-2011, 08:14 PM	#13
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,436	Re: 34 ford transmission mount Any thing that rotates can get out of balance including fans and water pumps. All you have to do there is run it without the belt to check. Some of these old Fords may have had some parts machined off square too. Alignment can be checked but it takes a lot of fussing with the stuff while it's appart. FoMoCo machine operators did make some mistakes in this respect just like any other manufacturer but luckily not too many. Kerby