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Thrust plate and cam gear clearence #1486894 08/19/13 06:45 PM 08/19/13 06:45 PM
Joined: Dec 2007 Posts: 88 Minnesota, USA D dnd0001 OP member
dnd0001 OP member D Joined: Dec 2007 Posts: 88 Minnesota, USA	Okay need some advice. I'm replacing the timing chain on my 340. should I be able to pull the gears off an put the new on without checking the thrust plate/cam gear clearence. The rest of the engine is fully assembled and I can't get the cam to move forward to check the required gap. Do I even need to do this or was this done when the engine was built? Can't I just put the new timing chain/sprocket on and be fine? I need to figure this out so I can put it back together.

Re: Thrust plate and cam gear clearence [Re: dnd0001] #1486895 08/19/13 06:49 PM 08/19/13 06:49 PM
Joined: Aug 2003 Posts: 12,291 Kent, Wa 340SHORTY Truck Nut
340SHORTY Truck Nut Joined: Aug 2003 Posts: 12,291 Kent, Wa	Should be no problem... I am truckless..

Re: Thrust plate and cam gear clearence [Re: dnd0001] #1486896 08/19/13 10:43 PM 08/19/13 10:43 PM
Joined: May 2003 Posts: 15,487 Florida S scratchnfotraction I Live Here
scratchnfotraction I Live Here S Joined: May 2003 Posts: 15,487 Florida	Quote: Okay need some advice. I'm replacing the timing chain on my 340. should I be able to pull the gears off an put the new on without checking the thrust plate/cam gear clearence. The rest of the engine is fully assembled and I can't get the cam to move forward to check the required gap. Do I even need to do this or was this done when the engine was built? Can't I just put the new timing chain/sprocket on and be fine? I need to figure this out so I can put it back together. thats what i do, I have never had a reason to check the thrust plate on a SB with a chain/gears. just make sure you have the gear fully seated and the cam bolt torque correct. (I use a 3/8 air impact gun and torque the bolt seating the gear) now i do remove/inspect the thrust plate when i remove a cam. but only looking for obvious wear signs on the thrust surface.

Re: Thrust plate and cam gear clearence [Re: dnd0001] #1486897 08/19/13 10:48 PM 08/19/13 10:48 PM
Joined: Feb 2004 Posts: 4,501 Gainesville,FL G goldmember master
goldmember master G Joined: Feb 2004 Posts: 4,501 Gainesville,FL	Most are never checked for proper end play and most are not a problem. Why not install and check endplay?

Re: Thrust plate and cam gear clearence [Re: goldmember] #1486898 08/19/13 10:55 PM 08/19/13 10:55 PM
Joined: May 2003 Posts: 15,487 Florida S scratchnfotraction I Live Here
scratchnfotraction I Live Here S Joined: May 2003 Posts: 15,487 Florida	Quote: Most are never checked for proper end play and most are not a problem. Why not install and check endplay? i run junk, i dont measure any of it other than how long it lasts before i have to replace it.

Re: Thrust plate and cam gear clearence [Re: scratchnfotraction] #1486899 08/19/13 11:34 PM 08/19/13 11:34 PM
Joined: Jun 2012 Posts: 1,899 MYRTLE BEACH SOUTH CAROLINA E ek3 top fuel
ek3 top fuel E Joined: Jun 2012 Posts: 1,899 MYRTLE BEACH SOUTH CAROLINA	unless its a roller , it wont matter. offset grind on flat tappets keeps the cam centered. a roller must have minimum clearance set.

Re: Thrust plate and cam gear clearence [Re: scratchnfotraction] #1486900 08/20/13 02:07 AM 08/20/13 02:07 AM
Joined: Feb 2004 Posts: 4,501 Gainesville,FL G goldmember master
goldmember master G Joined: Feb 2004 Posts: 4,501 Gainesville,FL	Quote: Quote: Most are never checked for proper end play and most are not a problem. Why not install and check endplay? i run junk, i dont measure any of it other than how long it lasts before i have to replace it. Most are not a problem and yes I have built a ton without an issue.

Re: Thrust plate and cam gear clearence [Re: dnd0001] #1486901 08/20/13 03:32 AM 08/20/13 03:32 AM
Joined: Aug 2003 Posts: 43,214 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,214 Bend,OR USA	Quote: Okay need some advice. I'm replacing the timing chain on my 340. should I be able to pull the gears off an put the new on without checking the thrust plate/cam gear clearence. The rest of the engine is fully assembled and I can't get the cam to move forward to check the required gap. Do I even need to do this or was this done when the engine was built? Can't I just put the new timing chain/sprocket on and be fine? I need to figure this out so I can put it back together. You can not check the cam end play with the rocker arms and pushrods putting pressure on the lifters Put the new gears and chain on and make sure and torque the cam retianing bolt to the proper torque, make sure the fuel pump ecentric is installed correctly on the cam key also Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

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