Anything to do while engine is pulled?
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FTE Legend
Joined: Aug 2004
Posts: 37,887
Likes: 20
From: North Central Rural Sask.
Anything to do while engine is pulled?
Hey guys and gals, i recently bought a 91 superduty with a 7.3 idi. Its a clean engine, runs good, but the plan is to pull the engine and tranny and install in to a 77 f250 highboy.
While the engine is out, besides gaskets the need to be replaced, is there anything else to change, or modify while the engine is out, that would be better to do it now, than having to pull it out later because I didnt mod or fix a common issue?
Thanks in advance.
While the engine is out, besides gaskets the need to be replaced, is there anything else to change, or modify while the engine is out, that would be better to do it now, than having to pull it out later because I didnt mod or fix a common issue?
Thanks in advance.
Posting Guru
Joined: May 2015
Posts: 2,036
Likes: 5
Head gaskets....
I replaced every gasket except those when I had my motor out. Guess what I ended up doing six months later..in the truck.
It wasn't that bad. But it would have been a cake walk with the motor out.
A new head gasket kit was $125 and the valley pan was $75
I replaced every gasket except those when I had my motor out. Guess what I ended up doing six months later..in the truck.
It wasn't that bad. But it would have been a cake walk with the motor out.
A new head gasket kit was $125 and the valley pan was $75
Cargo Master
Joined: Oct 2012
Posts: 3,072
Likes: 48
From: California
Front and rear seals. Rod and crank bearings if you have the equipment. Piston rings if you have the money.
Have the crank balanced. Check the condition of your harmonic balancer. My HB was eroded on the inside.
Do the HG's, as DarkOverCast said. Add some Head Studs if you want to invest the money. It's lots easier getting over 120 ftlbs with the engine on the stand than doing it in the engine bay.
Get a good engine stand. Don't cheap out. At least a 2-ton.
If the oil cooler is original, you might want to replace the o-rings and gaskets. The o-rings get brittle over time and are prone to leaking.
Other things too, but I gotta run.
Have the crank balanced. Check the condition of your harmonic balancer. My HB was eroded on the inside.
Do the HG's, as DarkOverCast said. Add some Head Studs if you want to invest the money. It's lots easier getting over 120 ftlbs with the engine on the stand than doing it in the engine bay.
Get a good engine stand. Don't cheap out. At least a 2-ton.
If the oil cooler is original, you might want to replace the o-rings and gaskets. The o-rings get brittle over time and are prone to leaking.
Other things too, but I gotta run.
Thread Starter
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FTE Legend
Joined: Aug 2004
Posts: 37,887
Likes: 20
From: North Central Rural Sask.
Thanks for the replies. I had planned to do gaskets, i don't think im going to dig into it as far as bearings, rings and doing the crank, it should be fine as is for that sort of thing. I'll look into resealing the injectors and oil cooler though! Thanks, keep coming!
More Turbo
Joined: Oct 2009
Posts: 596
Likes: 58
From: West Plains, MO
Check the freeze plugs very carefully, especially the two behind the flywheel. You don't want to have to replace those later, and some of the others can't be done properly with the engine in the truck...
Cross-Country
Joined: Jan 2018
Posts: 87
Likes: 13
From: Moscow, ID/ Montana
if you ever plan on turboing it do head studs. also while you have the heads off check the valve guide wear.
rebuild the oil cooler while it is out as well only use motorcraft seals on it.
idiperformance.com is a great place for head studs or other parts.
rebuild the oil cooler while it is out as well only use motorcraft seals on it.
idiperformance.com is a great place for head studs or other parts.
Fleet Owner
Joined: Jul 2006
Posts: 20,347
Likes: 803
From: Mi'kma'ki
Trending Topics
Posting Guru
Joined: Oct 2005
Posts: 2,282
Likes: 4
From: Oregon
Modern soundproofing material in the 77 cab, and 99-04 Superduty front leaf swap.
Call me jealous. I miss my old 79 F250, but love my 86 6.9idi. Would have loved to combine the two. Seriously, if you haven't done a SD leaf swap in it, it's the best thing I ever did to mine. Made it ride smooth as a newer truck.
Call me jealous. I miss my old 79 F250, but love my 86 6.9idi. Would have loved to combine the two. Seriously, if you haven't done a SD leaf swap in it, it's the best thing I ever did to mine. Made it ride smooth as a newer truck.
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