1986 F-250 Progress Thread
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 39
From: EXTREME southwest CT
There's one like mine on Ebay right now $100 bid, $200 BIN.
Seller is 100%
http://www.ebay.com/itm/Holley-0-80457S-Carburetor-/130943829445?pt=Motors_Car_Truck_Parts_Accessories&hash=item1e7cdc45c5&vxp=mtr
Seller is 100%
http://www.ebay.com/itm/Holley-0-80457S-Carburetor-/130943829445?pt=Motors_Car_Truck_Parts_Accessories&hash=item1e7cdc45c5&vxp=mtr
Thread Starter
|
Logistics Pro
Joined: Sep 2011
Posts: 4,491
Likes: 26
From: Algona,WA
Well, it's time! 
Time to put the new Comp Cams XE250H and the new Comp Magnum roller tip rockers on. More pictures tomorrow, took me about 90 minutes to get this far, and 20 of that was just me messing around wondering how I'm going to plug the transmission cooler lines.
Time to put the new Comp Cams XE250H and the new Comp Magnum roller tip rockers on. More pictures tomorrow, took me about 90 minutes to get this far, and 20 of that was just me messing around wondering how I'm going to plug the transmission cooler lines.
Thread Starter
|
Logistics Pro
Joined: Sep 2011
Posts: 4,491
Likes: 26
From: Algona,WA
Well, got the old cam out, got the valve springs, umbrella seals and new valve locks installed. Looks like the old cam is a Comp cam of some sort. I took a ruler with a level on it and the new cam (this is just a rough guess, accurate measurements later) has probably 50-60 thousandths or more lift over the old cam.
I noticed from the old cam to the new, the stamping marks, locations and numbers are all in the same spot from the old to the new. For whatever reason on the back there was also this purple stuff on the new and old cam, same spot. The numbers however, are different from old to new.
I was 3/4 of the way pissed the hell off when I saw the cam bearings, they're smooth though and I don't have any oil pressure problems, in fact I have very good oil pressure. Also the old cam spun very nicely in the bearings, it seems the farther in the engine the less and less wear the bearings have. Either way, I was pissed but they should be just fine.
I noticed from the old cam to the new, the stamping marks, locations and numbers are all in the same spot from the old to the new. For whatever reason on the back there was also this purple stuff on the new and old cam, same spot. The numbers however, are different from old to new.
I was 3/4 of the way pissed the hell off when I saw the cam bearings, they're smooth though and I don't have any oil pressure problems, in fact I have very good oil pressure. Also the old cam spun very nicely in the bearings, it seems the farther in the engine the less and less wear the bearings have. Either way, I was pissed but they should be just fine.
Thread Starter
|
Logistics Pro
Joined: Sep 2011
Posts: 4,491
Likes: 26
From: Algona,WA
Yep, lol. I worked on it about 6 hours today pretty much non stop. at 120-130 PSI with the piston up to pretty much TDC, the air just forces the piston back down. I guess my rings have a good seal to them. I also saw the piston skirts, they looked like brand new. No scratches from what I could see and still had the machine marks.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
Thread Starter
|
Logistics Pro
Joined: Sep 2011
Posts: 4,491
Likes: 26
From: Algona,WA
I got the new cam in, new lifters and new roller tip rockers on tonight. I also painted the front of the engine, timing cover and thermostat housing. The thermostat housing and the timing cover turned out perfect. Engine block looks really nice too. I will be ordering a different timing chain since the last one had like 2 degrees of slack in it from when it was new. Still has that, but while it's apart I'm just going to buy a better one and be done with it. Oh, looks like the old cam was a Comp Cams high energy series 252H
Thread Starter
|
Logistics Pro
Joined: Sep 2011
Posts: 4,491
Likes: 26
From: Algona,WA
.433 intake .433 exhaust on the 252H vs .461 intake .474 exhaust, the open and close times are slightly different. Overlap between the two cams was 1 degree difference.
http://www.compcams.com/Company/CC/c...?csid=868&sb=2
http://www.compcams.com/Company/CC/c...?csid=875&sb=2
http://www.compcams.com/Company/CC/c...?csid=868&sb=2
http://www.compcams.com/Company/CC/c...?csid=875&sb=2
