Re: R block cam Journal question
[Re: RAY1969CARS]
#1782201
03/17/15 08:13 PM
03/17/15 08:13 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Quote:
Can a Standard step journal be machined out to a 50 mm ???
Sorry.. I was gonna get back with you but I havent found my stock cam yet
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Re: R block cam Journal question
[Re: MR_P_BODY]
#1782202
03/17/15 08:16 PM
03/17/15 08:16 PM
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Joined: Apr 2007
Posts: 1,390 CA.
RAY1969CARS
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Quote:
Quote:
Can a Standard step journal be machined out to a 50 mm ???
Sorry.. I was gonna get back with you but I havent found my stock cam yet
no worries bro
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Re: R block cam Journal question
[Re: RAY1969CARS]
#1782203
03/17/15 10:18 PM
03/17/15 10:18 PM
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Joined: Oct 2007
Posts: 3,978 Hilltown Pa
1967dartgt
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I do not believe so, I think they measure 52 mm.
Brett Miller W9 cnc'd heads STR Chassis fabraction
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Re: R block cam Journal question
[Re: mr_340]
#1782205
03/18/15 01:17 PM
03/18/15 01:17 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Quote:
Are you talking about the block or the cam?
The cam itself... does anyone know what size the large journal is on a stock cam... I looked but cant find the spec
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Re: R block cam Journal question
[Re: mr_340]
#1782207
03/18/15 01:47 PM
03/18/15 01:47 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Quote:
If this will copy over from the 1967 Dodge Service Manual for the 273/318 engine:
1.998"-1.999" on the #1 cam journal. I couldn't get it to copy and paste from the PDF.
Ray... based on this and this 50 millimeter = 1.968503937 inch but I know that my 50mm cam had to be ground a bit to fit the bearings so its a bit oversized... measure that #1 journal on that stick.. its gonna be very close.. and in some cases the bearings are over sized(I have had most of them that needed to be sized).. or bore the cam tunnel to 50mm roller specs
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Re: R block cam Journal question
[Re: MR_P_BODY]
#1782208
03/18/15 02:11 PM
03/18/15 02:11 PM
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Joined: Apr 2007
Posts: 1,390 CA.
RAY1969CARS
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Quote:
Quote:
If this will copy over from the 1967 Dodge Service Manual for the 273/318 engine:
1.998"-1.999" on the #1 cam journal. I couldn't get it to copy and paste from the PDF.
Ray... based on this and this 50 millimeter = 1.968503937 inch but I know that my 50mm cam had to be ground a bit to fit the bearings so its a bit oversized... measure that #1 journal on that stick.. its gonna be very close.. and in some cases the bearings are over sized(I have had most of them that needed to be sized).. or bore the cam tunnel to 50mm roller specs
I'll check it as soon as I get home around 330 thank
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Re: R block cam Journal question
[Re: RAY1969CARS]
#1782209
03/18/15 10:56 PM
03/18/15 10:56 PM
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Joined: Nov 2004
Posts: 4,330 Lynchburg, VA
Leon441
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I forget the O.D. of the 50mm needle bearings. But, yes you can have the tunnel bored for 50mm roller bearings.
Career best 8.02 @ 169 at 3050# and 10" tires small block power.
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Re: R block cam Journal question
[Re: WHITEDART]
#1782211
03/18/15 11:10 PM
03/18/15 11:10 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Quote:
55 mm cores are cheap from comp cams
He has a 48* babbit block... I sold him a 48* 50mm by accident thinking it was a babbit one.. when I checked my stash I got rid of the babbit one along the line somewhere .. now he is trying to see if the 50mm can be cut to babbit specs.. he could cut the block to 50mm and use what he has now but he wants the babbit set up
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Re: R block cam Journal question
[Re: Leon441]
#1782216
03/19/15 02:49 AM
03/19/15 02:49 AM
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RAY1969CARS
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Quote:
I forget the O.D. of the 50mm needle bearings. But, yes you can have the tunnel bored for 50mm roller bearings.
That would be the key to what I want to do you know any OD and what the block is actually measuring for the press of the bearings are the numbers I may need
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Re: R block cam Journal question
[Re: RAY1969CARS]
#1782217
03/19/15 02:57 AM
03/19/15 02:57 AM
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Joined: Jun 2003
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MR_P_BODY
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Quote:
mike I only have calipers no mic but I'm getting 1.995 on the cam
Now you need to measure the front bearing to see what it is
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Re: R block cam Journal question
[Re: vc360]
#1782219
03/19/15 09:14 AM
03/19/15 09:14 AM
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tubtar
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Quote:
Quote:
48 degree babbit blocks are not stepped journals ........ they take their own bearing sets and are all the same diameter. http://www.jegs.com/i/Mopar-Performance/312/P4876372/10002/-1?parentProductId=1903872
I am pretty sure the 59 degree blocks use the stepped bearings like the stock blocks.
That's not correct. The early48 deg "r" blocks and "r1a"blocks used stepped journals like a 59 block but with 48 degree lobe spacing. I have one and it uses std small block cam bearings. Call bullet or midway cams.
Why does this not surprise me ? Add that to the which oil pan and which crankshaft journal questions then. I am pretty sure that the MoPar UGL cams for the babbit blocks are all gone , but cores can be sourced elsewhere. But like everything else with these motors , bring your wallet.
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