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Author
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Topic: Cam Install
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Lennie
Journeyman Posts: 40
From: Denton, TX, USA
Registered: Dec 2001
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posted 11-16-2002 07:48 PM
   
Ok guys and gals.......I need some help.
I'm installing a new Comp Cam in my 289 along with a double timing chain set and want to use a mechanical fuel pump. The timing chain set (also CC) came with 2 dowel pins. Neither pin is long enough to seat completely into the cam and also catch the hole in the ectric cam. Shouldn't the dowel seat completely into the cam, go through the cam sprocket and then end flush with the inside of the ectric cam?Any help or suggestions is greatly appreciated. I've got the bottom half finished and have the heads installed. All I need to do is leap this hurdle and I can put the front and top of the engine together. Thanks.
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Lennie
Journeyman Posts: 40
From: Denton, TX, USA
Registered: Dec 2001
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posted 11-16-2002 10:26 PM
Boy if I could only spell......that should be ECCENTRIC not ectric.......lolIt probably makes more sense now.
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mstngjoe
Journeyman Posts: 64
From: Oregon
Registered: Aug 2002
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posted 11-16-2002 11:00 PM
The short one should be used for a two piece fuel pump eccentric. The long one for a one piece.The last Comp cam I installed about a year ago also had two pins. I used the long one and it worked fine. Would suggest you try mocking it up completely to verify. Install whichever pin you should, thrust plate, sprocket, eccentric and cam bolt. Good luck. PS Sorry about the edits. My spelling sucks too  ------------------
My Mustang
My next engine [This message has been edited by mstngjoe (edited 11-16-2002).] [This message has been edited by mstngjoe (edited 11-16-2002).] [This message has been edited by mstngjoe (edited 11-16-2002).]
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Lennie
Journeyman Posts: 40
From: Denton, TX, USA
Registered: Dec 2001
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posted 11-16-2002 11:15 PM
Joe you're right. The paperwork that came with the timing chain set did say that the shorter one should be used with a 2 piece eccentric cam.It just seems that when I took the old cam out that the dowel pin fit flush with the inside surface of the eccentric cam. I did prefit everything and the pin just barely goes into the hole in the eccentric cam. Less than half the thickness but probably more than one quarter. I would think that it should be long enough to come flush with the inside surface of the eccentric cam. The last thing I want to happen is for the end to not catch the eccentric cam properly and then just be spinning around in there, bust the head of the bolt off, metal shavings everywhere, be pulling 6000 rpm, starve the engine of fuel, tear up the fuel pump, run metal through the bearings.....etc, etc, etc....
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itlbrnmoff
Gearhead Posts: 907
From: Indianapolis,IN.USA
Registered: Nov 2002
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posted 11-17-2002 08:07 AM
quote:
Originally posted by Lennie:
Ok guys and gals.......I need some help.
I'm installing a new Comp Cam in my 289 along with a double timing chain set and want to use a mechanical fuel pump. The timing chain set (also CC) came with 2 dowel pins. Neither pin is long enough to seat completely into the cam and also catch the hole in the ectric cam. Shouldn't the dowel seat completely into the cam, go through the cam sprocket and then end flush with the inside of the ectric cam?
Did they sell you a timing set to be used with a mechanical pump? It depends on the year of the engine...
The ones designed for EFI engines have a thicker backside where it rides up against the thrust plate...
I was sold the wrong one for my '83 carbed engine...
And being impatient near a holiday weekend,I had the backside milled off to make it compatible with the fuel pump eccentric... 
Any help or suggestions is greatly appreciated. I've got the bottom half finished and have the heads installed. All I need to do is leap this hurdle and I can put the front and top of the engine together. Thanks.
------------------
1983 Mustang GT T-tops
306 cid T-5 3.45 gear
under construction
No traction devices
A cool Ford Racing Hat...
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itlbrnmoff
Gearhead Posts: 907
From: Indianapolis,IN.USA
Registered: Nov 2002
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posted 11-17-2002 08:09 AM
I hope you can read that one...
somehow I ended up in the middle of the quote?  ------------------
1983 Mustang GT T-tops
306 cid T-5 3.45 gear
under construction
No traction devices
A cool Ford Racing Hat...
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Lennie
Journeyman Posts: 40
From: Denton, TX, USA
Registered: Dec 2001
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posted 11-17-2002 10:17 AM
The CC part number is 3120 "Hi Tech Roller Race Set" and shows that it fits "Ford V8, 255, 289, 302 and Boss 302 1965 - 88" Note "B" in the book says "Can be used on late model engines but requires 1-pc fuel pump eccentric"All that is right out of the CC Catalog.
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V8 Thumper
Gearhead Posts: 3529
From: Orange, Ca. United States of America
Registered: Dec 2001
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posted 11-17-2002 10:31 AM
According to that, it should work but obviously dosen't. 1-800-CAM-HELP is the tech line; I'd give them a call Monday morning and run the situation by them. It is possible that you wound up with a wrong pin in your kit. I too run a Comp cam with a one piece eccentric, and the long pin worked/fit perfectly. Something's definately screwy ------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html
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Lennie
Journeyman Posts: 40
From: Denton, TX, USA
Registered: Dec 2001
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posted 11-17-2002 10:45 AM
Thanks Thumper......
That's what I was planning to do but just wanted to make sure I hadn't lost my mind and wasn't going to sound like and idiot when I called them.Imagine that, if the pin had been about 1/4" longer I would have had the engine almost all put together by now....... $5000 engine waiting on a $5 part..... 
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Lennie
Journeyman Posts: 40
From: Denton, TX, USA
Registered: Dec 2001
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posted 11-19-2002 06:26 AM
OK, here's the official response from CC.I called yesterday and the tech rep said "Ahhhh well maybe we drilled the hole in the end of the cam a bit too big and too deep. The dowel pin should be a press fit. You can pull the cam out of the engine and send it to us for us to inspect and replace or just go to the local hardware shop and buy a steel dowel rod yourself and cut it to size"
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Robert K
Gearhead Posts: 514
From: Nashville, TN
Registered: Apr 2000
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posted 11-19-2002 08:23 AM
I had the exact same problem when I rebuilt my 289 with a Comp cam. I basically got the same answer from their tech staff. I scavenged a hardened dowel pin from an Aircraft engine and it worked perfectly. Don't worry the A/C engine wasn't on a plane. It was acually in with a bunch of non-serviceable assemblies and parts.
I had no luck finding a hardened dowel pin at the hardware or auto parts stores. When I would ask, they all looked at me funny.------------------
67convertible 289/auto
65fastback 302/4sp
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V8 Thumper
Gearhead Posts: 3529
From: Orange, Ca. United States of America
Registered: Dec 2001
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posted 11-19-2002 08:43 AM
http://www.mcmaster.com/Do a search for 'Hardened Precision Shafts' and pick the size you need  ------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html
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Lennie_21
Journeyman Posts: 92
From: Denton, TX
Registered: Mar 2001
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posted 11-19-2002 06:14 PM
Thanks Thumper......I would have never thought to check with these folks. Now I just need a mic or caliper to check the diameter of the shaft. I can the one I have into work and check it.
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sick66
Journeyman Posts: 31
From:
Registered: Nov 2002
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posted 11-19-2002 10:44 PM
lennie i had the same problem as you....
i was lazy and bought the holley elictric fuel pump.....for once my lazyness paid off..
now my topend doesn't fall short off its potential and i have a nifty swit as an anti-theft device
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Big D
Gearhead Posts: 3785
From: WELLS, NEVADA
Registered: Nov 2000
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posted 11-19-2002 11:43 PM
quote:
Originally posted by mstngjoe:
PS Sorry about the edits. My spelling sucks too
Joe,, Coming from poor spelling and the fact that I never proof read.. When you are doing multiple edits,, you can delete the prior (This post was edited by..) wording so that it only looks like you edited once..  Don
(see I edited this 3 times and it's still wrong) [This message has been edited by Big D (edited 11-19-2002).]
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MrXerox
Gearhead Posts: 327
From: Oklahoma City, Oklahoma
Registered: Nov 2000
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posted 11-20-2002 12:23 AM
V8 Thumper, please dont tell me you found that site doing a web search with those same keywords! LOL
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