efi head/manifold swap on a carb'd 85 f150, pics and vids inside
07-08-2007, 10:35 PM
#1
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efi head/manifold swap on a carb'd 85 f150, pics and vids inside
so my 2wd beaner f150 project turned into a real project the other day when a washer from the previous owner found it's way into a combo chamber.
i didn't feel like getting headwork done, so to took the head, welded a steel ring made from flat stock to a kant-twist clamp: pic below of one
to make a true hmt spring compressor, and it works very well. these clamps have massive clearance for heads, and i just laid a wood block between the valve and lower jaw to do it.
it's safer than doing it on block and dropping a valve past the guide and having to pull the head anyway.
so i get the DA sander out after i chipped off the old gaskets, pop a 320 grit on and go to town. had intake/exhaust port faces, and hg face polished basically.
switched the air comp line over to the die grinder, did some port cleanup, smoothed em out a bit.
felpro gaskets all around, nevr seez'd all bolt holes
http://www.neverseezproducts.com/purenickel.htm
long story short, you'll melt your engine before the never seez starts to break down
bolted the intake/exhaust on the head, heaved the 130lbs of cast iron into the engine bay, torqued it all down, bolted the accessories back on, wired it up, etc.
went from one outlet for 6 cyls, to 2 outlets carrying 3 cyls.
stock compression of 8.5, with the head from a 87+ efi 4.9, takes me calculated to around 9.3-9.4 via compression guage.
so like 15hp gains estimated, and sweet open exhaust, and overly rich neighborhood smoke screens
went from a lame *** 2" pipe to dual 2.25", into 2.5" after the merge, into a glassless glasspack, and 3.5" cummins dodge ram tailpipe
i'll get the pics/vids on here when i find my CF card docking bay, 10 second 0-60 ftw!
i didn't feel like getting headwork done, so to took the head, welded a steel ring made from flat stock to a kant-twist clamp: pic below of one
to make a true hmt spring compressor, and it works very well. these clamps have massive clearance for heads, and i just laid a wood block between the valve and lower jaw to do it.
it's safer than doing it on block and dropping a valve past the guide and having to pull the head anyway.
so i get the DA sander out after i chipped off the old gaskets, pop a 320 grit on and go to town. had intake/exhaust port faces, and hg face polished basically.
switched the air comp line over to the die grinder, did some port cleanup, smoothed em out a bit.
felpro gaskets all around, nevr seez'd all bolt holes
http://www.neverseezproducts.com/purenickel.htm
A nickel and graphite based anti-seize compound formulated to protect up to 2400ºF against seizure and galling, galvanic and severe environmental corrosion. Never-Seez® Pure Nickel Special is a superior, high temperature anti-seize and extreme pressure lubricant. It contains flake particles of pure nickel, graphite and other additives in a special grease carrier found to enhance anti-seize performance. This product is recommended for use when applications prohibit the presence of copper, especially when resistance to corrosive acidic and caustic solutions is required. Meets Boeing BAC 5008, Ford ESE-M12A4-A, Garrett Engine Div. PCS5721, GE Aircraft A50TF198 Class A, General Motors 14001899, Pratt & Whitney PWA 36053-1 and is tested to MIL-A-907
bolted the intake/exhaust on the head, heaved the 130lbs of cast iron into the engine bay, torqued it all down, bolted the accessories back on, wired it up, etc.
went from one outlet for 6 cyls, to 2 outlets carrying 3 cyls.
stock compression of 8.5, with the head from a 87+ efi 4.9, takes me calculated to around 9.3-9.4 via compression guage.
so like 15hp gains estimated, and sweet open exhaust, and overly rich neighborhood smoke screens
went from a lame *** 2" pipe to dual 2.25", into 2.5" after the merge, into a glassless glasspack, and 3.5" cummins dodge ram tailpipe
i'll get the pics/vids on here when i find my CF card docking bay, 10 second 0-60 ftw!
07-09-2007, 03:32 PM
#3
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Join Date: Oct 2004
Posts: 623
Re: efi head/manifold swap on a carb'd 85 f150, pics and vids inside
Originally Posted by c0mpl3x
stock compression of 8.5
07-09-2007, 09:15 PM
#5
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Join Date: Apr 2006
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Re: efi head/manifold swap on a carb'd 85 f150, pics and vids inside
Originally Posted by ososlohatch
i see no video
Originally Posted by jeffescortlx
damn. N/A and 8.5:1 is ultra weak. I guess ford wanted it to run on 70 octane? When are you gonna boost it? Even 9.5:1 can use some help.
i'm about 25hp less and 40 ft lbs less, with the head swap. stock carb motors blow ***** more than ricers blow d series, but a nice fat t4 will fit this motor good.
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