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03-10-2016, 12:07 PM
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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: 22,025
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Not Ranked
Quote:
Originally Posted by Large Arbor
Yes, very helpful and thanks for the tips! Educating me is always a a good thing as I know less than most! (:
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... but more than some.  |
03-10-2016, 02:14 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
The owner used copper coated gaskets on the exhaust before and exhaust for cylinders 2 and 5 leaked a bit.
In regard to the heads, the engine builder advised using permatex aviation form a gasket around the water passages on both sides of the gasket. I will also look into the Hylomar.
Thanks for the sage advice.
Phil
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03-10-2016, 02:45 PM
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CC Member
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Join Date: Apr 2009
Location: Little Rock area,
AR
Cobra Make, Engine: ERA Street Roadster #782 with 459 cu in FE KC engine, toploader, 3.31
Posts: 4,533
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Not Ranked
I finally used a regular old Fel Pro 1442 for my exhaust gaskets and they have been fine. I tried the SEC copper gaskets (actually have about 3 sets hanging on my garage wall) but I was not completely satisfied with them. My main problem was not their fault - I ended up with a header bolt washer trapped between the header and the block that drove me nuts until I figured it out. But every time I removed them I could see evidence of tiny leaks at nearly every port. The Fel Pro 1442 were recommended to me instead.
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03-12-2016, 09:44 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
Heads off and now to have them cleaned...
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03-12-2016, 09:45 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
One more...
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03-20-2016, 01:11 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
Cometic Head gaskets are installed. It seems like this stick up in the intake and don't allow for a tight fit w/o gaskets. Does this look right?
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03-20-2016, 01:16 PM
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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: 9,417
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Not Ranked
You'll have to bend all those tabs down or they will keep the intake manifold from sitting all the way down.
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03-20-2016, 01:36 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
Do you just bend them or cut them off entirely? I just don't want to harm the gasket.
Phil
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03-20-2016, 01:57 PM
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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: 9,417
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Not Ranked
Bend them.
Make sure none of the riveted tabs are in spots where they could hold the heads off the block. When I use them on FEs, I usually have to drill the rivets out along the bottom.
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03-20-2016, 02:27 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
I bent them down and trial fitted with the gaskets on and who they fit much tighter now. I owe you a lunch next time I am in Louisville Brent!
Phil
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03-26-2016, 06:30 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
Well I got the headers back on (ugh), the fuel pump, oil filter holder, and a few other small things. Put the intake on and then pushrods, rockers, and could not get one rocker bolt to tighten down. It was a longer one in the middle and the threads stripped out. It appears they were an insert. I got all the threads out and out of an abundance of caution, pulled the intake back off and cleaned everything again. Now to tackle the rocker bolt hole. I am thinking a helicoil insert. Anyone ever ran into this?
Phil |
03-26-2016, 06:58 PM
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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: 22,025
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Not Ranked
Quote:
Originally Posted by Large Arbor
... could not get one rocker bolt to tighten down. It was a longer one in the middle and the threads stripped out. It appears they were an insert. l
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The bolts at the oil feed positions are a little bit longer and have a necked down shank. Any chance you accidentally got the oil feed bolt mixed up and in the wrong hole?  |
03-26-2016, 07:47 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
No chance, I made sure the same bolt came out and went in the exact same place.
Phil
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03-26-2016, 07:53 PM
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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: 22,025
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Not Ranked
Good enough -- just so you know the bolts on the #2 support on the left head, and the #3 support on the right head are different. I don't even know where you get them if you break or lose one, they're not in the ARP catalogs. Blykins probably has them though.
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03-26-2016, 08:16 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
I numbered each bolt and the location they came from. I think the loosening and tightening simply wore the threads lose. I will try to find a helicoil insert and that should fix it. It's just a pain in the..... However, seems like a reasonably easy solution.
It's on the drivers side head, third bolt from the front.
Phil
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03-26-2016, 08:32 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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After checking it is the 2nd bolt drivers side. It used the same length bolts as all the others on that side except the rearward bolt is shorter. All the others are the same. Pic below.
Phil
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03-26-2016, 08:50 PM
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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: 22,025
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Not Ranked
Quote:
Originally Posted by Large Arbor
After checking it is the 2nd bolt drivers side. It used the same length bolts as all the others on that side except the rearward bolt is shorter. All the others are the same. Pic below.
Phil
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The bolt that goes in that hole is different from the others. It allows oil to come up to the rockers. Maybe Blykins can post a pic of one so you can see the difference. |
03-26-2016, 08:43 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
Also, all the bolts are the same length on both side and same neck size.
Phil
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03-26-2016, 11:34 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, 05:03 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: 9,417
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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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