Author Topic: My 427 SOHC Build..... Finally the time has come!  (Read 835906 times)

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cobracammer

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1860 on: March 09, 2017, 06:20:58 PM »
OK I was able to get the Gaskets that I ordered as well as the TA-31.  In heading out to the garage, I already had it in my mind that I was going to take my time and actually break this simple task (simple but time consuming) into 2 days.  Below are some photos of the blocks mating surfaces with the intake manifold removed.  There was traces of coolant in the oil that was pooled in the block valley, and there was also some in a few of the intake ports (which I immediately sucked out with a shop vac.  There was no coolant at all on the drivers side nor in any of the drivers side intake ports (which is odd since I first started noticing the coolant leak on the drivers side of the distributor.....  but we will get there.

Started off by pulling the intake Manifold, bringing it over to the bench and starting the slow process of scraping the old gasket and TA-31 from it.  After this, I then went around the whole intake with brake cleaner and a scotch bright in order the surface completely free of oil, dirt, gasket/TA-31 residue.  Once this was completed, I stood the intake up on its end, and blasted the entire thing down with the break cleaner (in order to get any scraps that may have fallen down into the water jackets or intakes.

With that completed, I set the intake aside to dry (although brake cleaner dries almost immediately).

On to the Heads.  Before I began on this, I took clean shop towels and plugged all of the openings into the block (Distributor, drain back holes in the valley, intake ports on the heads, etc,).  I did not want to get any scrapings down into there and cause more trouble.  From there. I wend around the whole mating surface area in much the same way (as to not bore anyone) as the intake manifold.  Since I always seem to have a jinx in the areas on the edge of the heads (With the SOHC heads, they hang over the block and create a wedged shaped area that is usually plugged with TA-31 and wedged shape cork gaskets.  Its very difficult to get a razor blade in there and get it completely clean, so I probably spent about 1 hour in total on just those 4 wedged shaped nooks.  Then (with all of the holes still plugged), I went around the whole thing with brake cleaner and scotch bright. (See below).  Finally I took the shop vac and cleaner out the whole valley and intake port areas and made sure everything was free of debris and coolant (what little There was).

Finally, I made sure all was covered for the night and closed down the garage.  Tomorrow will be the time for sealing the intake up.

2 things I found that were interesting (dangerous word ).  The fact that there was a little coolant in some of the passenger side intakes (the cylinders with the intake valves closed were the ones where I could see some coolant pooled on top of them.  However, there were 2 cylinders where the intake valves were open and I am assuming there was some coolant that got down into the cylinder (Did not seem like much though- Maybe a tee-spoon?)

2nd interesting thing is the fact that the intake manifold bolt holes had to be cnc'd a little (ovaled) in order to get the intake to bolt correctly to the heads.  There is very little surface area between the bolt hole and the water jacket on the intake.  A little worried, but since this only started to drip replaced the coolant after I replaced the gaskets last time, I am assuming it will be fine with a little more TA-31 "attention " in these areas.

Tomorrow I will be following a few tips I got from Jay on installation as well as draining all of the old contaminated oil and replacing with now stuff.  Fingers crossed this go around  :0)










« Last Edit: March 09, 2017, 06:51:53 PM by cobracammer »
Jason
2005 Saleen S281 (427 SOHC 2 X 4 EFI swap), T56 Magnum XL 6 speed, 9" Currie rear with 3.89 Gears

cjshaker

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1861 on: March 10, 2017, 01:02:04 AM »
I hope you were really careful in cleaning up afterwards. Scotchbrite material always leaves shreds and particles of the pads behind, and that stuff is really abrasive!
Doug Smith


'69 R-code Mach 1, 427 MR, 2x4, Jerico, 4.30 Locker
'70 F-350 390
'55 Ford Customline 2dr
'37 Ford Coupe

cobracammer

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1862 on: March 10, 2017, 05:03:51 PM »
Hey Doug.  Yes sir,  I plugged all the holes with shop towels and between brake cleaner, a shop vac, and more shop towels, it was literally clean enough to eat off of.

So this is how it went today.  As stated above, even though I had it clean yesterday and prepped to go, I gave it an additional once over just to be sure.  After about 10 minutes, I began by coating the bottom side of the gaskets with TA-31.  Light but total coverage on the whole surface, but with extra coverage around each water jacket.  In putting an additional bead around each water jacket area, I would then lightly run my finger in circles around it to make sure that the TA-31 had even and full coverage.  After this, I placed it onto the head and lightly pressed down all around each intake as well as the water jackets.  I was sure that I had good coverage around the water jackets because when I pressed all around, I began to see the TA-31 squish out slightly.  Luckily it squished out evenly and completely all the way around, so I was sure it would seal (at this point).  Then on to the other side in the exact same way.  Finally, as placing the head gaskets took about 5 minutes each, I spent the next 10 minutes taking an exacto knife and evenly cutting the wedged shape cork ends off of the rail gaskets.  After I had each one nipped off, I covered them all the way around with TA-31 and pushed them under the corners of each head where they over hang on the block rails.  At this point, the intake gaskets had been sitting for about 10-15 minutes and were on pretty well.  I then covered the top side in the exact same manner as the bottoms (paying extra attention with the TA-31 to the water jacket areas).

Finallly, I ran a "generous" bead of TA-31 all the way across the back rail as well as the front rail (to be clear, there is now no cord gasket on the rails with the exceptions of a cork wedge at each corner.  With help this time, I placed the intake manifold down slowly into position.  Jay gave some advise as to make sure the distributor is installed and centered before bolting it all down.  With the Distributor in, and seated evenly, I placed 1 bolt on each side just to get started (not tightening them down, but just getting them started).  It was at this point, I wanted to check and make sure everything was OK before finally bolting the intake down for good.  Upon inspection, front looked good, however when I got to the back, I saw that one of the triangle cork gaskets was pushing out!  I tried to push it back in, but with no luck.  With quite a bit of frustration, I realized I would have to pull the intake off to replace the cork wedge.  As soon as I pulled the intake, I realized I would need to "touch up" the intake gasket especially on the rails and the water jackets.  So I did just that.  I put an additional bead around each water jacket and using my finger made clockwise circles to ensure it was even.  I then put an additional bead across both the Front and Rear rail.  Finally I put the intake back down and bolted it all into place.  Feeling like it could have gone better, I decided to try running additional TA-31 on the back mating surface (where the intake sits on the rail).  I would put a dab on my index finger and run it back and forth to make sure if even there was the tiniest gap or pin hole, that I would have filled it in before the gasket becomes hardened and oily after the first run.

On a positive note, The intake lined up perfectly with the bolt holes (both times) and the distributor fell into place quite easily and is all lined up with the marker lines I drew to mark the timing.

I have not yet installed the throttle bodies as I wanted to let it "breath from the inside too for maximum drying of the TA-31.  I am not sure if this is necessary, and I am also not sure how long I should wait before it is sure to dry.  I was going to give it until Sunday or Monday and then reinstall the Throttle bodies, Fuel lines and wire harness.

If this works and has no leaks (Please GOD let there be no leaks), I would say that my mistake the first time I re-did the gaskets would have been the prep.  I cleaned it 200% better and cleaner this go around, so hopefully this works.

I don't know why this car fights me every step of the way.  LOL  Fingers Crossed
Jason
2005 Saleen S281 (427 SOHC 2 X 4 EFI swap), T56 Magnum XL 6 speed, 9" Currie rear with 3.89 Gears

newfalconowner

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1863 on: March 10, 2017, 06:20:55 PM »
I wish you the best of luck this time around..

Mine just keeps getting gremlins every step of the way and feel like ripping of my efi.. got a new ecu, and ran fine for one day,, now back to no start.. still going to try and figure it out,, but loosing patients quick

cobracammer

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1864 on: March 10, 2017, 06:22:56 PM »
You have a fast system too correct NewFalcon?
Jason
2005 Saleen S281 (427 SOHC 2 X 4 EFI swap), T56 Magnum XL 6 speed, 9" Currie rear with 3.89 Gears

newfalconowner

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1865 on: March 10, 2017, 06:24:17 PM »
yes, but I made the intake, multiport tunnel ram

newfalconowner

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1866 on: March 10, 2017, 06:38:34 PM »
ive been called inventive, a pioneer, and insane for using GM based stuff.. starting to believe in the insane bit


Drew Pojedinec

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1867 on: March 10, 2017, 10:09:04 PM »
Cobra,
Permatex #3 Aviation sealant on the engine side of intake gaskets and it'll slide off when removed and still seal well.
It's a liquid with a brush and doesn't harden.  30 seconds with a towel cleans it off..... much nicer to use inside an engine.  Good luck.

cobracammer

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1868 on: March 15, 2017, 07:56:02 PM »
Ok, got my oil filters today and did an oil change.  Good news is that I did not see any coolant in the oil.  I have noticed that the car has not really been driven at all except for around the street a few times a few months ago and the oil is Dark black!  I thought it would be slightly clearer, but unsure.

Filled with coolant and new oil, and I do not see a coolant leak under yet.  Just need to fill with gas, hook up the vacuum gauge and give it another go!
Jason
2005 Saleen S281 (427 SOHC 2 X 4 EFI swap), T56 Magnum XL 6 speed, 9" Currie rear with 3.89 Gears

cobracammer

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1869 on: March 16, 2017, 02:21:58 PM »
Wanted to jump on here and post real quick.  Filled the car up with fresh 93 octane today.  Wanted to run the fresh fuel through the lines, so I turned the key on so the fuel pump would kick on.  To me, the pump didnt sound quite right, so I left it on and went to check the fuel pressure regulator under the hood.  To my amazment, the fuel pressure was at 80 PSI!  In the past, it was always locked down at 40 PSI.  Checked the turn screw to see if it had come loose and increased the pressure, but no... still locked down tight!  No Idea.  Only thing I can think of is that this whole time, only 1 of the walbro fuel pumps was working..... and now, possibly the 2nd one sprang to life?  Doubling the fuel pressure from 40 to 80???  Just kind of interesting for sure.  Either way, readjusted back to 40 psi and locked it back down.  Last item is to install the vacuum gauge and give her another try with a fresh tune.
Jason
2005 Saleen S281 (427 SOHC 2 X 4 EFI swap), T56 Magnum XL 6 speed, 9" Currie rear with 3.89 Gears

cobracammer

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1870 on: March 17, 2017, 07:28:49 PM »
Was out there again today doing a few checks before firing it up.  I actually read the guide that allows me to check the IRM's using the handheld.  IRM's are the electrical interference getting to your ECU.  From what I can find online, anything less that 10 is supposed to be ok per the tech line.  When I managed to locatd it on my computer, I am showing 6 as my IRM value.  According to the internet, since I am less than 10, I should be fine and leave it alone.  However, my thinking is any electronic interference is not good!

I actually read a really good post of someone who figured out all the bugs on FAST's EZ efi system and posted them.  He stated that by wrapping the Yellow Wire with aluminum tape ( and also the O2 wire for good measure), he was able to get hos IRM's down to 01 to 02.  I may do this and recheck since all it will cost me is aluminum tape.  If not, Jay suggested a method to suppress electrical noise.  I will try and post the article below as it seemed better written that the FAST Manual!

https://www.thirdgen.org/forums/dfi-ecm/685422-problem-solving-ez-efi.html
« Last Edit: March 17, 2017, 07:34:54 PM by cobracammer »
Jason
2005 Saleen S281 (427 SOHC 2 X 4 EFI swap), T56 Magnum XL 6 speed, 9" Currie rear with 3.89 Gears

newfalconowner

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1871 on: March 17, 2017, 08:08:43 PM »
great article, thanx, what was Jays suggestion? i have 2 msd noise filters im going to install, 1 for the msd 6al box and other for the fast ecu

cobracammer

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1872 on: March 17, 2017, 10:24:42 PM »
That was his suggestion!  They arent that expensive so thats good.  Are you able to check your IRM count?
Jason
2005 Saleen S281 (427 SOHC 2 X 4 EFI swap), T56 Magnum XL 6 speed, 9" Currie rear with 3.89 Gears

newfalconowner

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1873 on: March 18, 2017, 07:18:16 AM »
I didn't know till I read that link. but I will today

My427stang

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1874 on: March 18, 2017, 07:29:58 AM »
Interesting stuff, but aren't you running well and just need to tweak the cold start?

---------------------------------
Ross
Bullock's Power Service, LLC
- 70 Fastback Mustang, 489 cid FE, Victor, SEFI, Erson SFT cam, TKO-600 5 speed, 4.11 9 inch.
- 71 F100 shortbed 4x4, 461 cid FE, headers, Victor Pro-flo EFI, Comp Custom HFT cam, 3.50 9 inch