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Member Projects / Re: 57 Yr wait for a Dream Car? 1966 Cyclone GT 390
« Last post by jayb on Today at 08:56:07 PM »
Beautiful car, and one of my favorite Mercs.  I did have one back in the day, some pics are below.  I bought it with no engine or trans, painted it black with the stripes and stuck a 429 SCJ engine and C6 in it.  Did pretty well in the street race wars back then; I told everyone it had a 351C ;-)  After it was in the pictures shown, I ended up tubbing it and putting in a full cage with the intention of bracket racing it, but the local track closed just when I was getting it finished up.  I ended up selling it; another one that got away.  The one photo shows me next to the car, 40 years and 40 pounds ago LOL!









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Member Projects / Re: 57 Yr wait for a Dream Car? 1966 Cyclone GT 390
« Last post by TimeWarpF100 on Today at 07:28:31 PM »
Quote from: WConley on Today at 09:53:29 AM
That car is absolutely beautiful!  Wow what a gem   :)

Thanks! Really is a great car.  40 yrs ago was restoring the 66-67 Comets and Fairlanes. It was worth the wait for this one.

I did resize pics but for full view one will have to click on photo. 
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FE Technical Forum / Valve Spring Question
« Last post by Diogenes on Today at 07:24:10 PM »
I'm trying to find either a Trickflow valve spring, p/n 51400413, or a readily available equivalent. It seems the Trickflow number may be obsolete. The corresponding retainer seems available, a 51400423, but not the spring.

My previously suspected rod knock now appears to be a broken spring and bent pushrod. I'm trying to source these numbers, which were in the paperwork from the previous owner/machine shop. The Trickflow spring 51400413 and Pioneer valve lock PF613HD are documented. The retainer p/n 51400423 I surmised from Trickflow documents found on the web that matched it to the fore-mentioned spring.

The cam is a Bullet 230 dur @ .050, lobe lift .3027 I and E, gross lift .524 I and E.

Any other p/n's would be greatly appreciated. I'm hoping to source these locally so I can quickly confirm this was my problem, and not something requiring rebuilding the short block.
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Member Projects / Re: 57 Yr wait for a Dream Car? 1966 Cyclone GT 390
« Last post by TimeWarpF100 on Today at 07:23:59 PM »















































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FE Technical Forum / Re: 1970 f250 390 build
« Last post by nick c on Today at 05:17:48 PM »
Quote from: frnkeore on Today at 02:29:18 PM

None of the dimensions, that I high lighted in bold, are FE dimensions. Valves should be ~2.03 x 1.56, with ~.371 to .372 stems

I think we need pictures of your heads and rocker arm assemblys. The RA shaft grooves go to the bottom or the rockers can't get full oil.

You should be able to blow the restricter out with air, from the bottom of the head.

I miss typed the exhaust valve size; it is 1.56"
I measured the intake valve a number of times, it is 2.058".  The stock valve is certainly 2.03", the other set of heads I received have the 2.03's in them.   I don't know why or where these 2.05's came from. 

I've already removed and disassembled the rocker arms/shafts unfortunately.

 
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FE Technical Forum / Re: 1970 f250 390 build
« Last post by frnkeore on Today at 02:29:18 PM »
Quote from: nick c on Today at 12:22:25 PM
I discovered that the pin in one of the roller lifters had worked it's way loose and the wheel is chewed up.  The corresponding lobe on the cam has a pretty good ridge in it.  One of the burned pushrods corresponds to that lifter, not sure if they're related.     

I'm not used to looking at cylinder heads.  They're C8-AEH castings.  They were advertised as being worked over and have hardened seats, bowl work, with matched cc chambers.  I can see that they have double springs (or helper springs?), one piece retainers, viton valve seals.  The bowls appear to have work done, there's casting flash in the intake runners.  The valves are  ~2.058" intake and 1.056"ex., 0.368" diameter.

Is there a good resource for FE heads with pictures and so forth to review in order to better evaluate what I'm looking at?             

None of the dimensions, that I high lighted in bold, are FE dimensions. Valves should be ~2.03 x 1.56, with ~.371 to .372 stems

I think we need pictures of your heads and rocker arm assemblys. The RA shaft grooves go to the bottom or the rockers can't get full oil.

You should be able to blow the restricter out with air, from the bottom of the head.
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FE Technical Forum / Re: 1970 f250 390 build
« Last post by nick c on Today at 12:58:46 PM »
Quote from: 1968galaxie on Today at 12:28:36 PM
Quote from: nick c on May 03, 2024, 08:07:44 PM
Interesting.  How would the lack of pushrod oiling lead to loose rockers?
The push rods are not oiled up/through the lifters on a 390FE.
The oiling starts from the oil passage in the deck of the block, then up through the heads, up to the shaft, and then to each rocker arm - then to the cup in the push rod.
Perhaps someone blocked off the oiling to the rocker shaft?

The heads have carb jets in the rocker arm oiling passage.  I tried removing one, and only managed to push it further in during the process.. will need to figure out how to remove.

I didn't note the orientation of the shafts when removing them from the cylinder heads, but the rockers themselves don't show signs of oil starvation.  That is, the bushings and oil grooves don't appear to show abnormal wear.  The shafts appear to be good as well.

I saw a video recently about gunk getting into the shafts, perhaps there is build up inside them? 
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FE Technical Forum / Re: 1970 f250 390 build
« Last post by 1968galaxie on Today at 12:28:36 PM »
Quote from: nick c on May 03, 2024, 08:07:44 PM
Interesting.  How would the lack of pushrod oiling lead to loose rockers?
The push rods are not oiled up/through the lifters on a 390FE.
The oiling starts from the oil passage in the deck of the block, then up through the heads, up to the shaft, and then to each rocker arm - then to the cup in the push rod.
Perhaps someone blocked off the oiling to the rocker shaft?
 
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FE Technical Forum / Re: 1970 f250 390 build
« Last post by nick c on Today at 12:22:25 PM »
I discovered that the pin in one of the roller lifters had worked it's way loose and the wheel is chewed up.  The corresponding lobe on the cam has a pretty good ridge in it.  One of the burned pushrods corresponds to that lifter, not sure if they're related.     

I'm not used to looking at cylinder heads.  They're C8-AEH castings.  They were advertised as being worked over and have hardened seats, bowl work, with matched cc chambers.  I can see that they have double springs (or helper springs?), one piece retainers, viton valve seals.  The bowls appear to have work done, there's casting flash in the intake runners.  The valves are  ~2.058" intake and 1.056"ex., 0.368" diameter. 

Is there a good resource for FE heads with pictures and so forth to review in order to better evaluate what I'm looking at?             
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Member Projects / Re: 57 Yr wait for a Dream Car? 1966 Cyclone GT 390
« Last post by WConley on Today at 09:53:29 AM »
That car is absolutely beautiful!  Wow what a gem   :)
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