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06-22-2013, 10:28 AM
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CC Member
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Join Date: Jan 2013
Location: Clifton Park,
NY
Cobra Make, Engine: Antique and Collectible, 428 FE
Posts: 31
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Not Ranked
New pics, was ready for the body till it wiped a cam
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06-24-2013, 04:12 PM
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CC Member
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Join Date: Aug 2009
Location: L.I.N.Y.,
ny
Cobra Make, Engine: Antique and Collectible Autos 408w
Posts: 113
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Not Ranked
Its too bad about the engine. I'm at the same stage with mine. I hope to order the body in the fall. What are your plans with the body? I want mine gelcoated a blue as close to guardsman as I can. What happened with the cam, did you spin a bearing?
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06-24-2013, 06:11 PM
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CC Member
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Join Date: Jan 2013
Location: Clifton Park,
NY
Cobra Make, Engine: Antique and Collectible, 428 FE
Posts: 31
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Not Ranked
I ordered the body in black, I havn't decided if I want to stripe it yet. Once I get the car finished I am going mock up white stripes with some vinyl and take pictures with and without stripes then decide.
On engine break-in the flat tappet cam and lifters didn't wear in correctly and essentially ate each other. I just dropped the block off today at the engine shop hopefully have it back sooner than later. Frustrating to have to redo work and spend money twice.
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06-24-2013, 07:03 PM
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CC Member
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Join Date: May 2009
Location: American Fork,
Ut
Cobra Make, Engine: 66 Cobra
Posts: 930
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Not Ranked
Could you tell us what happened. Usually if cam lube is used on the lobes and high ZDDP break in oil, and then run the engine at 2000-2500 rpms varying the speed for about 25 minutes you don't have problems. That's got to be frustrating.
__________________
Wayne
"Everything is alive. If you get angry at a vehicle or the trans, it won't fix until you apologize and say you are sorry." "The vehicle always knows what it is doing and what the cause of it's bad feeling is. If you ask it humbly what the problem is, it will tell you. Then you and it will both be happy."
Gil Younger
Last edited by Wbulk; 06-24-2013 at 07:07 PM..
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06-24-2013, 07:13 PM
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CC Member
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Join Date: Jan 2013
Location: Clifton Park,
NY
Cobra Make, Engine: Antique and Collectible, 428 FE
Posts: 31
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Not Ranked
I did everything correct. Cam lube on lobes and lifters, ZDDP additive to the oil, pre-oiled with a drill, varying between 2000-2500 rpm for 20 min after start up, visually verified all pushrods were spinning. Then all the sudden one lifter started clacking badly immediatly shut it down. Picture below cam lobe looks equally as damaged.
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06-24-2013, 08:30 PM
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CC Member
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Join Date: May 2009
Location: American Fork,
Ut
Cobra Make, Engine: 66 Cobra
Posts: 930
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Not Ranked
Man! What brands?
__________________
Wayne
"Everything is alive. If you get angry at a vehicle or the trans, it won't fix until you apologize and say you are sorry." "The vehicle always knows what it is doing and what the cause of it's bad feeling is. If you ask it humbly what the problem is, it will tell you. Then you and it will both be happy."
Gil Younger
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06-24-2013, 10:17 PM
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CC Member / Sponsor
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Join Date: Jan 2002
Location: Provo,
UT
Cobra Make, Engine: Daytona Coupe
Posts: 1,359
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Not Ranked
Did you pull the inner valve springs out? or better yet use break in valve springs?
Did the engine fire right off, or did you have to crank it for a bit?
How much lift? How stiff were the valve springs?
I would go back to using the hydraulic roller.
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06-25-2013, 06:18 AM
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CC Member
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Join Date: May 2009
Location: American Fork,
Ut
Cobra Make, Engine: 66 Cobra
Posts: 930
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Not Ranked
Tom is dead on about the springs. With real heavy springs during breakin and a high lift cam, that will do it.
__________________
Wayne
"Everything is alive. If you get angry at a vehicle or the trans, it won't fix until you apologize and say you are sorry." "The vehicle always knows what it is doing and what the cause of it's bad feeling is. If you ask it humbly what the problem is, it will tell you. Then you and it will both be happy."
Gil Younger
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06-25-2013, 01:58 PM
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CC Member
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Join Date: Jan 2013
Location: Clifton Park,
NY
Cobra Make, Engine: Antique and Collectible, 428 FE
Posts: 31
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Not Ranked
It was comp cams lifters and cam. I was using single valve springs not double springs, if anything the spring pressure was on the low side. The cam only had .56" lift. And yes the engine fired immediatly.
The hydraulic roller got delivered already. I won't be bothering with the risk of a flat tappet again.
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06-25-2013, 02:32 PM
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CC Member
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Join Date: Jan 2013
Location: Clifton Park,
NY
Cobra Make, Engine: Antique and Collectible, 428 FE
Posts: 31
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Not Ranked
And to top things off I just ruptured my bicep tendon which I had surgically repaired 3 weeks ago from a previous rupture memorial day weekend. Looks like I will be back under the knife.
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06-30-2013, 02:46 PM
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CC Member
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Join Date: Jan 2007
Location: PHILADELPHIA,
PA
Cobra Make, Engine: ANTIQUE AND COLLECTABLEFORD 460
Posts: 112
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Not Ranked
Seeing your pictures of the frame and the motor makes me want to build another one. Its a blast!
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06-30-2013, 03:53 PM
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CC Member
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Join Date: Jul 2006
Location: Redding,
CA
Cobra Make, Engine: FFR chassis and suspension, Mr. Bruce 289 FIA body
Posts: 1,066
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Not Ranked
Quote:
Originally Posted by Wbulk
Tom is dead on about the springs. With real heavy springs during breakin and a high lift cam, that will do it.
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Yep! Happened to me with my first Roadster. BBF with a mechanical flat tappet cam. Ate the cam in 30 minutes. Cost me $4000 in repairs and new parts. Switched to a roller cam and never had another problem. |
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