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03-26-2016, 10:34 PM
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CC Member
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Join Date: Apr 2012
Location: Bay Area (Peninsula),
CA
Cobra Make, Engine: ERA 427, 427/487 side-oiler
Posts: 1,248
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Not Ranked
Hopefully you already did this, but make sure the stud holes in the block are completely dry. When I recently changed my head gaskets, I cleaned out those holes with brake cleaner and left a few drops in the holes. When I put the heads back on and screwed the studs in, it forced the fluid out and would've compromised the gasket installation. Good thing I noticed. I took it apart again, cleaned out the holes meticulously with air and a rag, used new gaskets, and reinstalled. Of course, I used a bit of ARP lube on each stud and nut.
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03-27-2016, 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: 9,391
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Not Ranked
Factory rockers?
I never use bolts there. Even with factory rockers, I will use studs so that you don't have a fastener trying to pull the threads out of the aluminum. All of your aftermarket rockers will come with studs also.
You should be able to use a helicoil to repair it, but it's not going to be easy as you will have to grind some of it away to clear the oil feed hole, or get a short one so it doesn't stick up as high.
Patrick, it depends on which rocker system it is. Not all of them have necked down bolts/studs on the oil feed.
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www.lykinsmotorsports.com
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03-27-2016, 04:32 AM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,913
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Not Ranked
Quote:
Originally Posted by blykins
Patrick, it depends on which rocker system it is. Not all of them have necked down bolts/studs on the oil feed. |
I think I recall him saying he has Ford factory rockers. You don't have a necked down bolt sitting on the workbench that you could take a quick pic of, do you? |
03-27-2016, 04:40 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: 9,391
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Not Ranked
Maybe.....I'll check later.
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www.lykinsmotorsports.com
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03-27-2016, 05:35 AM
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CC Member
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Join Date: Oct 2013
Location: Columbus,
OH
Cobra Make, Engine: ERA 714
Posts: 713
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Not Ranked
I do have the factory rockers. They have a block that holds the rocker up which I think would block the oil return. Below is a pic of the rocker.
Phil |
03-27-2016, 06:42 AM
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CC Member
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Join Date: Oct 2013
Location: Columbus,
OH
Cobra Make, Engine: ERA 714
Posts: 713
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Not Ranked
I noted this in my Ford FE book. Looks like for hi riser intakes all bolts are the same length and absent the need for the smaller neck on the one bolt.
Phil
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03-27-2016, 07:30 AM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,913
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Not Ranked
That's a nice exception.  I didn't even think you could stuff a hi-riser under a Cobra hood.  |
03-27-2016, 09:49 AM
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CC Member
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Join Date: Oct 2013
Location: Columbus,
OH
Cobra Make, Engine: ERA 714
Posts: 713
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Not Ranked
Yes, and not quite what I am used to seeing as a "Hi Rider". My intake is below.
Phil
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03-27-2016, 09:56 AM
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CC Member
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Join Date: Oct 2013
Location: Columbus,
OH
Cobra Make, Engine: ERA 714
Posts: 713
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I mean not quite what I was thinking as a hi riser intake...
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03-27-2016, 09:58 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: 9,391
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Yeah, but you don't have high riser heads....you have edelbrocks. Rockers don't depend on the intake but the cylinder heads that they are bolted to.
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www.lykinsmotorsports.com
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03-27-2016, 10:49 AM
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CC Member
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Join Date: Oct 2013
Location: Columbus,
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Cobra Make, Engine: ERA 714
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Ok, so now I am confused. Do I used the same bolts or not?
Phil
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03-27-2016, 11:15 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: 9,391
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I don't know because I haven't tried, but I would be more concerned about running high riser rockers on a low/med riser head. High riser rocker stands are not the same height as the others and could potentially really screw up your rocker geometry unless it was accounted for at assembly time.
__________________
www.lykinsmotorsports.com
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03-28-2016, 03:03 PM
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CC Member
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Join Date: Oct 2013
Location: Columbus,
OH
Cobra Make, Engine: ERA 714
Posts: 713
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Not Ranked
Builder sized everything to work. Edelbrock recommended helicoils with red Loctite so that will be my approach.
Phil
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04-09-2016, 01:26 PM
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CC Member
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Join Date: Oct 2013
Location: Columbus,
OH
Cobra Make, Engine: ERA 714
Posts: 713
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Used a Jergens thread locker and went to Edlebrock studs / shafts. Put the intake on and then rockers and torqued down to 45 lbs. Plan to put the distributor in and carbs, water pump, overflow tank, and a bunch of little things tomorrow.
Phil
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04-09-2016, 01:27 PM
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CC Member
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Join Date: Oct 2013
Location: Columbus,
OH
Cobra Make, Engine: ERA 714
Posts: 713
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Not Ranked
Pic below of slow but steady progress..
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