4 speed bell housing alignment questions
#1392781
02/24/13 01:54 PM
02/24/13 01:54 PM
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Joined: Jan 2003
Posts: 755 Oregon
moparmedic
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My 70 Challenger is my first 4 speed car and I am reading a lot of stuff about bellhousing alignment in the shop manual and in the clutch kit I got. Anyone have any tips on getting this right the first time? Is it common to have to get the offset dowel pins and all that? Good pictures would help, the shop manual isn't as clear as I would like, or maybe it is and I don't quite understand it.
1968 Coronet 1968 Charger 1966 A100 Pickup 1967 Barracuda 1970 Challenger 1972 Challenger 1973 Barracuda 2021 Ram 2500
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Re: 4 speed bell housing alignment questions
[Re: moparmedic]
#1392782
02/24/13 02:13 PM
02/24/13 02:13 PM
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Joined: Dec 2007
Posts: 18,157 Mass
DAYCLONA
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I Live Here
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While most just throw the factory stuff together, as the tolerances are that "loose", it doesn't hurt to check the runout of the components involved, and improve upon their fit and performance, mock up your stock bell, or the bell your using, and indicate the bore opening in relation to the crankshaft, check crankshaft endplay to see if that's an issue for your current engine, run an SFI approved flywheel, toss the factory flywheel,...check to see if your crank is drilled for a bushing?, if not, it bearing time, and trimming of the input shaft...other items that always need addressing is the factory Z bar set-up, lots of slop and alignment issues,that can be eliminated... I'm sure others will chime in to help, don't hesitate to post questions or ideas/thoughts Mike
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Re: 4 speed bell housing alignment questions
[Re: DAYCLONA]
#1392783
02/24/13 02:23 PM
02/24/13 02:23 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
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What Mike said, Have someone help you setup/dial indicate it & post what you get for runout. I wouldn't think the shop manual would have detailed info on that. Not needed in every case but you are at that point so I'd bite the bullet & do what you need to do to get it checked. then you know you're good & the peace of mind is worth it
live every 24 hour block of time like it's your last day on earth
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Re: 4 speed bell housing alignment questions
[Re: JohnRR]
#1392787
02/24/13 03:52 PM
02/24/13 03:52 PM
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Joined: Jan 2003
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moparmedic
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Good tips, thanks guys! I do have a magnetic base dial indicator. I will get it set up and check and post results today.
Yes the car is an original 4 speed car but the engine is not original to the car and I am not sure about the bellhousing. It was sitting in the trunk when I bought the car.
1968 Coronet 1968 Charger 1966 A100 Pickup 1967 Barracuda 1970 Challenger 1972 Challenger 1973 Barracuda 2021 Ram 2500
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Re: 4 speed bell housing alignment questions
[Re: Cab_Burge]
#1392790
02/24/13 08:32 PM
02/24/13 08:32 PM
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moparmedic
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The engine is mostly together. This is what I came up with. Does my set up look correct? The readings are 0 top and -.016 bottom. Left side was -.008 and right -.009. I checked it twice. Let me know if that looks and sounds right. Thanks for the help......Frank
Last edited by moparmedic; 02/24/13 08:44 PM.
1968 Coronet 1968 Charger 1966 A100 Pickup 1967 Barracuda 1970 Challenger 1972 Challenger 1973 Barracuda 2021 Ram 2500
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Re: 4 speed bell housing alignment questions
[Re: 67_Satellite]
#1392792
02/24/13 09:23 PM
02/24/13 09:23 PM
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moparmedic
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I assume this is outside of acceptable tolerances right? If so,does the bellhousing get adjusted up or down? The video that was linked with similar results said down. I would buy the .007 offset pins correct?
1968 Coronet 1968 Charger 1966 A100 Pickup 1967 Barracuda 1970 Challenger 1972 Challenger 1973 Barracuda 2021 Ram 2500
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Re: 4 speed bell housing alignment questions
[Re: moparmedic]
#1392793
02/24/13 10:08 PM
02/24/13 10:08 PM
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Joined: Oct 2005
Posts: 8,872 Ontario, Canada
Stanton
Don't question me!
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Don't question me!
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Ontario, Canada
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Quote:
The readings are 0 top and -.016 bottom. Left side was -.008 and right -.009.
The side to side will not change if you just move the housing up or down - really, how can it ?!? You're out .001 now, you'll still only be out .001 when you move the housing up or down.
To fix your problem you need the .007" dowels. PM me and I can help you out there. As for up or down, that depends which way it's out. Your + or - means nothing to us. If the bottom is .016 further from the center then it needs to go up. If its .016 closer then it needs to go down. Either way you need the .007 dowels and when you install them you'll know soon enough which way it had to go. If you did it wrong they're easily turned with a screwdriver.
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Re: 4 speed bell housing alignment questions
[Re: 6PakBee]
#1392795
02/25/13 12:00 AM
02/25/13 12:00 AM
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moparmedic
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Perfect! Thanks for the help!
1968 Coronet 1968 Charger 1966 A100 Pickup 1967 Barracuda 1970 Challenger 1972 Challenger 1973 Barracuda 2021 Ram 2500
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Re: 4 speed bell housing alignment questions
[Re: moparmedic]
#1392796
02/25/13 12:06 AM
02/25/13 12:06 AM
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Joined: Jan 2011
Posts: 4,785 Utah and Alaska
astjp2
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Dont waste your money on the fixed dowels, get the RobbMC adjustable dowels, it will make the alignment so much easier. I spent 4 hours and went through 3 sets of fixed dowels to get it right before I got the adjustable ones and WOW, it was a few minutes and I was within .003 TIR and the parallel was within .002 Tim
1941 Taylorcraft 1968 Charger 1994 Wrangler 1998 Wrangler 2008 Kia Rio 2017 Jetta
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Re: 4 speed bell housing alignment questions
[Re: astjp2]
#1392797
02/25/13 12:15 AM
02/25/13 12:15 AM
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Joined: Oct 2005
Posts: 8,872 Ontario, Canada
Stanton
Don't question me!
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Don't question me!
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Quote:
get the RobbMC adjustable dowels, it will make the alignment so much easier
ah bullsh!t !!!
How hard can it be ... he's virtually dead on side to side and out .008 up and down. This doesn't take a rocket scientist, a bag of cash and fancy gadgets to fix !!!
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Re: 4 speed bell housing alignment questions
[Re: Stanton]
#1392798
02/25/13 02:05 AM
02/25/13 02:05 AM
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Joined: Jan 2003
Posts: 755 Oregon
moparmedic
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I needed several other transmission related items so I just ordered a set of offset pins from Brewers. Hopefully get this thing all lined up and back in the car. It has not been on the road since the early '80s!
Last edited by moparmedic; 02/25/13 02:06 AM.
1968 Coronet 1968 Charger 1966 A100 Pickup 1967 Barracuda 1970 Challenger 1972 Challenger 1973 Barracuda 2021 Ram 2500
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Re: 4 speed bell housing alignment questions
[Re: Stanton]
#1392800
02/25/13 11:49 AM
02/25/13 11:49 AM
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Joined: Jan 2003
Posts: 75,008 U.S.S.A.
JohnRR
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I Win
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Quote:
Quote:
get the RobbMC adjustable dowels, it will make the alignment so much easier
ah bullsh!t !!!
How hard can it be ... he's virtually dead on side to side and out .008 up and down. This doesn't take a rocket scientist, a bag of cash and fancy gadgets to fix !!!
The Lakewood dowels are .500 , Mopar dowels are .496 , that's .004 oversize then you take the fact that its a press fit hole so those are more than .004 oversize. Unless you ream out the holes in the block the dowels will NOT turn with a screwdriver and you run the potential of cracking the block, more than once I have seen that posted by someone. I've used those dowels ONCE, they DO NOT turn once you hammer them into the block.
It's not rocket science , but it also takes a little more than what a caveman with a large rock for a hammer can do ...
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