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 Post subject: Cam installation issue
PostPosted: Mon Jan 08, 2007 6:07 pm 
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3 Deuce Weber
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Joined: Mon Jan 08, 2007 5:12 am
Posts: 63
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Been lurking around here a while, looks like a nice group of fellas, so I'll ask for a bit of help, er suggestions.

I started building the slant for my newly acquired 69 Dart tonight after picking up the goodies from the machinist. All LOOKED well but when I went to install the cam, I couldn't get it into the last bearing, pushed it a bit by hand (not hard though built lots of V-8's, I know they should slip right in) but to no avail. When I pulled the cam out I noticed that the bearing feels like it has a high spot beneath it, right at the oil hole. Brand new bearings, brand new solid lifter Comp cam, which floats in the first three journal quite freely, also the #1 bearing is fully grooved is that normal? Whats up here? Machinist error?

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225 .030
.020 off the block .100 from head
Comp 264
904 Tranny
New Ebre-ting
Image
http://s78.photobucket.com/albums/j103/edrod01/


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 Post subject:
PostPosted: Mon Jan 08, 2007 6:23 pm 
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Supercharged
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Joined: Sat Nov 27, 2004 8:03 pm
Posts: 9496
Location: IRWIN PA
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I had a similar Problem 2 weeks ago with my Self- induced Motor teardown / buildup.

1. Yes there are grroves in the #1 Bearing shelll.

2.Thre are 2 Possible causes to your dilemma - which both require you to return to the machine shop where you got the work done with block and cam in hand....maybe not literally with the block.. unless you can hold 200# in one arm like a bag of sugar..

1. either #2 and #3 Bearing shells got swapped - Meaning #2 Bearing is in place of #3 baring and vice/versa or-


2. (this is what I did.) The #4 Rear Bearing went in crooked, Got Tweaked, and was unusable - The Solution : Get a new bearing set and drive #4 in square. (fixed My stupid Screwup)




Others will chime in below this line


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Greg

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 Post subject:
PostPosted: Mon Jan 08, 2007 6:28 pm 
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Board Sponsor & Contributor

Joined: Thu Oct 31, 2002 5:39 pm
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Location: North America
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The bearing swap/cockeyed issue is probably what is at work here, but, given my past experience and the ongoing frequency with which people have trouble with Comp Cams having screwed up even the basic stuff, the cam should probably be looked at (i.e., measured) extra-carefully.

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 Post subject:
PostPosted: Mon Jan 08, 2007 6:47 pm 
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3 Deuce Weber
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Joined: Mon Jan 08, 2007 5:12 am
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Oyyyy, I knew someone would suggest further scrutiny of the cam. I would never use Comp on a V-8 build but it was the most accessible cam for the slant. I guess I'll be taking back my 200# bag O'sugar back in the mornin'.....resolution will be forth comin' by God.

Oh also I took .020 off the deck and .060 off the head, should this require anything other than a stock pushrod? What can I expect for compression ratio with a Felpro gasket....8.75:1??

_________________
225 .030
.020 off the block .100 from head
Comp 264
904 Tranny
New Ebre-ting
Image
http://s78.photobucket.com/albums/j103/edrod01/


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 Post subject: Stock compression?
PostPosted: Mon Jan 08, 2007 7:44 pm 
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Joined: Tue Oct 29, 2002 8:27 pm
Posts: 9714
Location: Salem, OR
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Quote:
Oh also I took .020 off the deck and .060 off the head, should this require anything other than a stock pushrod? What can I expect for compression ratio with a Felpro gasket....8.75:1??
This all will depend on how far down the piston is in the bore at TDC, there are lots of "slop" in the deck height on slants so you may have not even started out with "stock compression"...

As it stands, with no overbore, and .080 off the deck/head then the Felpro gasket takes back about .040...so you're up about .040... so if you say started with an average set of estimations :roll: like .18 deck height and a combustion chamber of 52cc and did those mods, then yes, it'd be about 8.75...actual results will vary as to what your deck height really is, and chamber measurements...


Good luck on the cam bearing mix up, oyyy is right!

-D.Idiot


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 Post subject:
PostPosted: Mon Jan 08, 2007 7:50 pm 
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3 Deuce Weber
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Joined: Mon Jan 08, 2007 5:12 am
Posts: 63
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No it went .030 on the bore, maybe tommorow I'll get to see how deep the slugs are.

_________________
225 .030
.020 off the block .100 from head
Comp 264
904 Tranny
New Ebre-ting
Image
http://s78.photobucket.com/albums/j103/edrod01/


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 Post subject:
PostPosted: Tue Jan 09, 2007 9:10 pm 
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EFI Slant 6
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Joined: Sat Oct 07, 2006 10:29 am
Posts: 344
Location: Tennessee
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hhmmmm....
That's interesting....because my #1 bearing has a sorta-similar problem.
I went to install the cam, and it was fine until the front journal started into it's bearing. It went about 3/4 of the way, then stopped. :? I thought "Well, the thing is in there crooked.." So to check it, I took the cam out, and tried to put it in "backwards", just to make sure. The cam journal went in about 3/4. So.....I guess the bearing is bad? It's hard for me to believe, Clevite bearings and all. But I guess anything can happen.
It will force into place, but I have to put both hands on the cam gear to turn it. That's too much for me!

_________________
225 Cubic Inches of Iron-Head American Muscle

225 bored .040 /.100 off block, Schneider Cam 224@.050~ .480 lift - Stock valves, blended bowls, Offenhauser intake with 500 Edelbrock carb


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 Post subject:
PostPosted: Tue Jan 09, 2007 9:32 pm 
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Supercharged

Joined: Thu May 12, 2005 11:50 pm
Posts: 6291
Location: So California
Car Model: 64 Plymouth Valiant
Quote:
hhmmmm....
That's interesting....because my #1 bearing has a sorta-similar problem.
I went to install the cam, and it was fine until the front journal started into it's bearing. It went about 3/4 of the way, then stopped. :? I thought "Well, the thing is in there crooked.." So to check it, I took the cam out, and tried to put it in "backwards", just to make sure. The cam journal went in about 3/4. So.....I guess the bearing is bad? It's hard for me to believe, Clevite bearings and all. But I guess anything can happen.
It will force into place, but I have to put both hands on the cam gear to turn it. That's too much for me!
could be the cam journal.......

_________________
Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

8)


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 Post subject:
PostPosted: Wed Jan 10, 2007 4:41 am 
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SL6 Racer & Moderator
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Joined: Sat Oct 19, 2002 12:06 pm
Posts: 8708
Location: Silver Springs, Fl.
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Most of the time, when a cam will not install into the bearings, properly, the broblem is not the cam or the bearings. It is a problem with the bearing installation. The old bearing are driven out and the new bearing are driven into place. It is very easy to "nick" the Block when driving out the old bearing, and create a high spot, which will deform the new bearing. Also when driving in the new bearing it is possible to "peen" the edge of the bearing, if you are not carefull.

Just a tip: before installing the new bearings into the block, slip them on the cam, and check for fit, and that the oil holes on the #4 cam journal line up with the holes in the bearing.

_________________
Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225


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 Post subject:
PostPosted: Wed Jan 10, 2007 5:38 am 
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EFI Slant 6
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Joined: Fri Sep 01, 2006 4:09 am
Posts: 396
Location: Tolland, Ct. 06084
Car Model: 65 Dart, 225, 4 spd od, hyd clutch, BBD, 2 1/4 exh
I had a "cam wouldn't go in" problem and found that the block was not line bored properly such that the centerline of each cam bearing journal were not in line by as much as .060. It cost to get it line overbored & bushed so that the next set of installed cam bearings were inline. I suspect it's a rare event.

How did they get the first cam in you ask? :?: ......They hogged out one side of the cam bearing to slip the cam in!! :shock: No wonder the engine had low oil pressure!! :!: A Plymouth outsourced component better idea.....

_________________
1965 Dart 110k, 225, Carter BBD Super Six, 2 1/4 single exh., sbp manual scarebird front disc, 7 1/4 rear 2.94 sure grip, 14 x 4.5 OEM wheels, 833 OD with hyd. throwout bearing, HEI, electric fan, ram air/heated air, Accusump. http://plymouthcarclub.com/


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 Post subject:
PostPosted: Wed Jan 10, 2007 4:30 pm 
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3 Deuce Weber
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Joined: Mon Jan 08, 2007 5:12 am
Posts: 63
Car Model:
Cam install has been resolved....there was a burr under the bearing. Built the short block tonight but forgot to check the deck height, what should I expect, I had them take off .020 but I don't know what stock should be?

_________________
225 .030
.020 off the block .100 from head
Comp 264
904 Tranny
New Ebre-ting
Image
http://s78.photobucket.com/albums/j103/edrod01/


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