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04-23-2017, 04:37 PM
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CC Member
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Join Date: Apr 2017
Location: Woodland,
CA
Cobra Make, Engine: Kirkham 427SC Stack injected side oiler
Posts: 3
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Not Ranked
427 Side oiler strange hole in deck
I just pulled the motor from my Kirkham 427 due to a significant oil leak. It was coming from the head gasket area at the rear passenger side corner. Block code is C5AE-H.
When I pulled the heads, this is what I found. The mystery holes had been filled with some kind of sealant by the engine builder.
What are these holes? |
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04-23-2017, 09:55 PM
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CC Member
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Join Date: Jan 2002
Location: Cooper City,
FL
Cobra Make, Engine: Contemporary Classics, red white stripes
Posts: 139
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Not Ranked
427 sohc
Looks like oil drain holes for a 427 SOHC. |
04-24-2017, 04:03 AM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,415
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Not Ranked
Yep, it's a cammer block.
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04-24-2017, 07:32 AM
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CC Member
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Join Date: Apr 2017
Location: Woodland,
CA
Cobra Make, Engine: Kirkham 427SC Stack injected side oiler
Posts: 3
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Not Ranked
Thanks
Thanks for the info. Should I try to plug the holes properly or just sell it and start over?
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04-24-2017, 07:37 AM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,415
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Not Ranked
Well, I certainly wouldn't sell it.
In times past, I have dealt with this in a couple of ways....
1. Find a cup plug (like a freeze plug) that fits the hole, put a little silicone around it and drive it in.
2. Tap the hole for a pipe plug (requires engine to be torn down to bare block).
In either case, whatever plug you make needs to be under the deck surface of the block when installed.
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04-24-2017, 10:17 AM
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CC Member
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Join Date: Mar 2006
Location: San Marcos california,
CA
Cobra Make, Engine: 1989 KCC from South Africa Right Hand Drive
Posts: 1,601
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Not Ranked
What difference...it's got no pressure, just a drain.
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04-24-2017, 11:05 AM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,415
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Not Ranked
It's got splash and vapor pushing up at it....
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04-24-2017, 07:01 PM
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CC Member
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Join Date: Apr 2008
Location: Melbourne,
Vic
Cobra Make, Engine: Some polish thing... With some old engine
Posts: 2,286
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Not Ranked
Best fix would be to just build a Cammer!  |
04-25-2017, 08:14 AM
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CC Member
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Join Date: Jul 2003
Location: West Bloomfield,
MI
Cobra Make, Engine:
Posts: 717
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Not Ranked
You win!
Those holes are drainbacks for a 427 SOHC cylinder head. For your purposes you can tap in a small freeze plug with some silicone and it'll be fine. But that block might be worth a bunch on money to somebody building an original Cammer!
__________________
Survival Motorsports
"I can do that....."
Engine Masters Challenge Entries
91 octane - single 4bbl - mufflers
2008 - 429 cid FE HR - 675HP
2007 - 429 cid FE MR - 659HP
2006 - 434 cid FE MR - 678HP
2005 - 505 cid FE MR - 752HP
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04-25-2017, 09:54 AM
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CC Member
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Join Date: Feb 2014
Location: White City,
SK
Cobra Make, Engine: West Coast, 460 CID
Posts: 2,908
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Not Ranked
Quote:
Originally Posted by Barry_R
Those holes are drainbacks for a 427 SOHC cylinder head. For your purposes you can tap in a small freeze plug with some silicone and it'll be fine. But that block might be worth a bunch on money to somebody building an original Cammer!
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Agreed. I'd be inclined to sell the block to someone building a cammer and replace it with a BBM (or other) block. Genuine SOHC blocks are scarce / rare, and would be highly prized by someone looking to build a cammer.
__________________
Brian
Last edited by cycleguy55; 04-25-2017 at 01:18 PM..
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04-25-2017, 11:23 AM
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CC Member
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Join Date: Aug 2013
Location: Canandaigua,
NY
Cobra Make, Engine: SPF MKII Riverside Racer FIA
Posts: 2,496
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Not Ranked
I would concur with Brian and Barry, explore what that block might sell for and if there is interest in it and then compare what a new block might cost. It might put some money back in your pocket.
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04-26-2017, 11:23 PM
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CC Member
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Join Date: Apr 2017
Location: Woodland,
CA
Cobra Make, Engine: Kirkham 427SC Stack injected side oiler
Posts: 3
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Not Ranked
Thanks for the replies
Thanks to everyone for the thoughtful replies. I'm sure i can find a way to reliably plug the hole but I would feel better if it went to someone who valued it and wanted to build a cammer engine. I'm not ambitious enough to taken on a cammer in Kirkham project and it does not feel right to hide it in a regular FE engine.
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04-27-2017, 10:53 AM
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CC Member
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Join Date: May 2006
Location: LAS VEGAS,
NV
Cobra Make, Engine: contemporary(2) one with 427 sohc and one with 427 center oiler
Posts: 491
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Not Ranked
I may be interested in your block, What is the condition of your block? What kind of history as far as use and prior machining do you have available?
I am located in San Diego.
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