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Need help with pilot bushing size #1520984 10/21/13 02:52 PM 10/21/13 02:52 PM
Joined: Jun 2013 Posts: 36 MD R rkh17 OP member
rkh17 OP member R Joined: Jun 2013 Posts: 36 MD	Engine is a 1969 340 with an A833 trans. Replacing things including the pilot bushing and the correct bushing for the motor appears to be P5007051. I picked up one from my local parts store and it's larger than the one I pulled out of the car. No way it's going in. Here are the dimensions of the used pilot bushing OD 23.08mm ID 19.08mm Length 21.88mm measurements of the new bushing OD 23.97mm ID 19.08mm Length 22.08 ID is the same, both bushings seem to fit correctly over the input shaft, length is roughly the same.. OD appears to be the issue. Can anyone verify part number and dimensions? I can't imaging forcing the new one in due to the size difference. Photo included of the new bushing not fitting into the caliper with the old bushing OD set... Thanks, -Rob 7895378-photo2.JPG (528 downloads) Last edited by rkh17; 10/21/13 02:54 PM.

Re: Need help with pilot bushing size [Re: rkh17] #1520985 10/21/13 03:26 PM 10/21/13 03:26 PM
Joined: Aug 2003 Posts: 43,129 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,129 Bend,OR USA	NAPA use to sell, probally still does, a adapter pilot bushing for Mopars tha had the smaller I.D. than the standard OEM crankshafts with the stock pilot bushings, it may be yours is one of those I've seen guys hone or bore out the back of the crankshaft on a automatic crank to make it a stick shift crank Shame on Moapr for making two different cranks Good luck on resolving this I don't speak metric so I have no idea what sizes you have, if I did I could go out in my shop and measure both of the those pilot bushings and see if the NAPA bushing is close to or the same as yours is I'll be back on here later if you want to post the sizes in inches and I'll look at mine and let you know if that may be a option for you Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Need help with pilot bushing size [Re: rkh17] #1520986 10/21/13 04:10 PM 10/21/13 04:10 PM
Joined: Jan 2003 Posts: 6,389 Abilene, Texas F fastmark master
fastmark master F Joined: Jan 2003 Posts: 6,389 Abilene, Texas	That is a common problem on big blocks but all my steel 340 cranks are drilled for the correct size pilot( the larger one). The easy fix is to use the later model one that comes in the new pickups. The fit in the back of the crank hub where the convertor hub goes. Don't get the ones with needle bearing but the one with the bushing. Mopar created a big problem when they rough drilled the cranks for auto tranny and only finish drilled the ones for a std tranny.

Re: Need help with pilot bushing size [Re: rkh17] #1520987 10/21/13 04:14 PM 10/21/13 04:14 PM
Joined: Oct 2006 Posts: 596 Mass. 8 80fbody mopar
80fbody mopar 8 Joined: Oct 2006 Posts: 596 Mass.	I believe I had the same issue when I switched to a stick years ago in my f-body. I went with a late model roller bearing. It fits in the outside register for the flywheel. It's never been changed since. It was cheap & and the local NAPA carried it.

Re: Need help with pilot bushing size [Re: Cab_Burge] #1520988 10/21/13 04:18 PM 10/21/13 04:18 PM
Joined: Jun 2013 Posts: 36 MD R rkh17 OP member
rkh17 OP member R Joined: Jun 2013 Posts: 36 MD	pushes the button to convert to inches.. Old bushing dimensions.. OD 0.908in ID 0.751in Length 0.861in From looking at the new bushing I received from the parts store, I honesty think I'm looking at a different crankshaft. The car (1974 Challenger) does appear to have been converted to 4 speed from auto.. Thanks for your help and insights.. -R 7895448-photo1.JPG (884 downloads) Last edited by rkh17; 10/21/13 04:20 PM. RobH -- 72 Plymouth Duster 360 73 Dodge Charger SE 318 74 Dodge Challenger 340-4 74 Dodge Challenger 440

Re: Need help with pilot bushing size [Re: 80fbody] #1520989 10/21/13 04:18 PM 10/21/13 04:18 PM
Joined: Jan 2003 Posts: 2,632 Nashville, TN M MOPARMIKE69 master
MOPARMIKE69 master M Joined: Jan 2003 Posts: 2,632 Nashville, TN	Quote: I believe I had the same issue when I switched to a stick years ago in my f-body. I went with a late model roller bearing. It fits in the outside register for the flywheel. It's never been changed since. It was cheap & and the local NAPA carried it. I did the same thing when the bushing I bought would not fit the original 4sp crank. Went to the roller and it worked great! 69 Road Runner vert 69 GTX hard top 70 Road Runner 4 speed 70 Hemi Cuda vert

Re: Need help with pilot bushing size [Re: 80fbody] #1520990 10/21/13 04:49 PM 10/21/13 04:49 PM
Joined: Jun 2013 Posts: 36 MD R rkh17 OP member
rkh17 OP member R Joined: Jun 2013 Posts: 36 MD	Quote: I believe I had the same issue when I switched to a stick years ago in my f-body. I went with a late model roller bearing. It fits in the outside register for the flywheel. It's never been changed since. It was cheap & and the local NAPA carried it. Do you have a link to the late model roller bearing so I can take a peek? Thanks, -R RobH -- 72 Plymouth Duster 360 73 Dodge Charger SE 318 74 Dodge Challenger 340-4 74 Dodge Challenger 440

Re: Need help with pilot bushing size [Re: rkh17] #1520991 10/21/13 04:56 PM 10/21/13 04:56 PM
Joined: Jan 2003 Posts: 25,757 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,757 Rio Linda, CA	These are the register-mounted pilot bushings/bearings. The NAPA 615-1033 undersized bushing is .915" OD. 7895486-833_bearingandbushing.jpg (1216 downloads)

Re: Need help with pilot bushing size [Re: rkh17] #1520992 10/21/13 05:00 PM 10/21/13 05:00 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: Quote: I believe I had the same issue when I switched to a stick years ago in my f-body. I went with a late model roller bearing. It fits in the outside register for the flywheel. It's never been changed since. It was cheap & and the local NAPA carried it. Do you have a link to the late model roller bearing so I can take a peek? Thanks, -R I just bought a new clutch set for a 93-5.2 NV4500 5 speed, the bronze bushing is the same as you have, on a 91-5.2 it is a little to big to just hammer in there. fits input shaft correct. I orderd up a late model pilot bearing for the 93-d-250/NV4500 it fits in the bigger machined hole for the TC hub. here it is for a part # referance and with it installed. ran less than 18 bux at advance/auto 7895490-pilotbearing2.jpg (722 downloads)

Re: Need help with pilot bushing size [Re: scratchnfotraction] #1520993 10/21/13 05:01 PM 10/21/13 05:01 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	installed in the crank with flywheel bolted up 7895491-pilotbearing1.jpg (1135 downloads)

Re: Need help with pilot bushing size [Re: scratchnfotraction] #1520994 10/21/13 06:10 PM 10/21/13 06:10 PM
Joined: Oct 2005 Posts: 8,868 Ontario, Canada S Stanton Don't question me!
Stanton Don't question me! S Joined: Oct 2005 Posts: 8,868 Ontario, Canada	Just call a bearing supply place and tell them what you need. Its likely a stocked item and will cost you less than the Mopar part.

Re: Need help with pilot bushing size [Re: scratchnfotraction] #1520995 10/21/13 06:57 PM 10/21/13 06:57 PM
Joined: Jun 2013 Posts: 36 MD R rkh17 OP member
rkh17 OP member R Joined: Jun 2013 Posts: 36 MD	Thanks for all the tips. I think I'm just moving forward with the roller bearing... Looks like Brewers has one that will work. http://www.brewersperformance.com/proddetail.asp?prod=PB5300&cat=16 RobH -- 72 Plymouth Duster 360 73 Dodge Charger SE 318 74 Dodge Challenger 340-4 74 Dodge Challenger 440

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