Rough idling 400m.
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Well, holy *****! my cam is 180 degrees out! I thought it was but this cinches it! good lord! How do I fix this without running the valves into the pistons when I am turning the cam over to the proper place...
Also, this thing actually ran half decent down the road... so could the dist have been installed 180 out to compensate for this?
I have also heard to advance it to the +4 mark becasue the cam itself actually has the retardationof -4 built into it? so straight up on the new timing set is -4 and +4 is straight up... is that true?
Rusty Roller
Joined: Oct 2011
Posts: 1,423
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From: Santa Cruz Mountains
Well, holy *****! my cam is 180 degrees out! I thought it was but this cinches it! good lord! How do I fix this without running the valves into the pistons when I am turning the cam over to the proper place... Rotate the engine over by hand 1 full turn. At TDC #1 your marks should be lined up.
Also, this thing actually ran half decent down the road... so could the dist have been installed 180 out to compensate for this? NO
I have also heard to advance it to the +4 mark becasue the cam itself actually has the retardationof -4 built into it? so straight up on the new timing set is -4 and +4 is straight up... is that true? I don't know about that... I would think the cam gear would be at 0 ( straight up) and the marks in line with each other. Unless you have the cam sheet in front of you and that is what it says...
Also, this thing actually ran half decent down the road... so could the dist have been installed 180 out to compensate for this? NO
I have also heard to advance it to the +4 mark becasue the cam itself actually has the retardationof -4 built into it? so straight up on the new timing set is -4 and +4 is straight up... is that true? I don't know about that... I would think the cam gear would be at 0 ( straight up) and the marks in line with each other. Unless you have the cam sheet in front of you and that is what it says...
I thought you were just installing a new cam gear and chain. If you are then it's just straight up 0 degrees and put the chain on with the marks aligned as in the pic, pointing at each other.
Heading off to town will check in when I get back.
Will someone confirm that what I am saying is correct? Thanks Glenn
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Do you have info that says you have a special cam in this engine?
I thought you were just installing a new cam gear and chain. If you are then it's just straight up 0 degrees and put the chain on with the marks aligned as in the pic, pointing at each other.
Heading off to town will check in when I get back.
Will someone confirm that what I am saying is correct? Thanks Glenn
.
I thought you were just installing a new cam gear and chain. If you are then it's just straight up 0 degrees and put the chain on with the marks aligned as in the pic, pointing at each other.
Heading off to town will check in when I get back.
Will someone confirm that what I am saying is correct? Thanks Glenn
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So when I install my new cam gear I was thinking it would be good to get rid of the 4 deg of smog era cam retardation... does that mean I will have to rotate the crank or cam 4 deg to install it 4 deg advanced to get it back to straight up timing? or would it be best to leave the cam retarded as it is right now?
vid of the old chain: http://s898.photobucket.com/albums/a...amchainvid.mp4
Rusty Roller
Joined: Oct 2011
Posts: 1,423
Likes: 5
From: Santa Cruz Mountains
So when I install my new cam gear I was thinking it would be good to get rid of the 4 deg of smog era cam retardation... does that mean I will have to rotate the crank or cam 4 deg to install it 4 deg advanced to get it back to straight up timing? or would it be best to leave the cam retarded as it is right now?
Hopeful someone with knowledge of "smog era cam retardation" can recommend what to do. Get some advice from someone that knows and has done this before.
If you were to advance it +4 then you need to turn it over a few rotations, by hand, with the plugs out and check for valve clearance.
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Hotshot
Joined: Feb 2004
Posts: 10,797
Likes: 2,599
From: The Shenandoah Valley
So when I install my new cam gear I was thinking it would be good to get rid of the 4 deg of smog era cam retardation... does that mean I will have to rotate the crank or cam 4 deg to install it 4 deg advanced to get it back to straight up timing? or would it be best to leave the cam retarded as it is right now?
Many (maybe all do now?) .... aftermarket timing sets have the three positions.
Looked at the short video. Yeah, it's worn some but I must say ... I have seen some looser than that. They loosen up most in the early miles as the pins to plates or rollers wear in.
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Yes, get rid of the 4 degree retarded position, and to do that get a crank sprocket that has three keyways, a 4 degree retarded, a 0 degree "straight up", and a 4 degree advance. There are also three timing marks on it, one for each position.
Many (maybe all do now?) .... aftermarket timing sets have the three positions.
Looked at the short video. Yeah, it's worn some but I must say ... I have seen some looser than that. They loosen up most in the early miles as the pins to plates or rollers wear in.
Many (maybe all do now?) .... aftermarket timing sets have the three positions.
Looked at the short video. Yeah, it's worn some but I must say ... I have seen some looser than that. They loosen up most in the early miles as the pins to plates or rollers wear in.
I would assume that that much slack would cause my rough idle though?
Would you suggest the +4 or straight up position?
Rusty Roller
Joined: Oct 2011
Posts: 1,423
Likes: 5
From: Santa Cruz Mountains
Red-Tail
I did a little research on this and here is my conclusion; so to speak.
Problem: Most of the references are when people are also replacing the cam or the threads ended without conclusion. No definitive answer found....
Solution: Call the timing set manufacture of your chain-set or call comp-cams and talk to the tech dept. Tell them what you are doing. ie: "I'm just replacing the chain/gears on the stock cam and no smog is needed." They will give you the proper advice.
Comp cams: 800-999-0853 ask for the tech dept
With do respect to tbear853:
Red Tail, you are probably going to be setting this up at +4 but it pays to take the time to make sure first.
.
I did a little research on this and here is my conclusion; so to speak.
Problem: Most of the references are when people are also replacing the cam or the threads ended without conclusion. No definitive answer found....
Solution: Call the timing set manufacture of your chain-set or call comp-cams and talk to the tech dept. Tell them what you are doing. ie: "I'm just replacing the chain/gears on the stock cam and no smog is needed." They will give you the proper advice.
Comp cams: 800-999-0853 ask for the tech dept
With do respect to tbear853:
Red Tail, you are probably going to be setting this up at +4 but it pays to take the time to make sure first.
.
Thread Starter
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Senior User
Joined: Dec 2009
Posts: 109
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Red-Tail
I did a little research on this and here is my conclusion; so to speak.
Problem: Most of the references are when people are also replacing the cam or the threads ended without conclusion. No definitive answer found....
Solution: Call the timing set manufacture of your chain-set or call comp-cams and talk to the tech dept. Tell them what you are doing. ie: "I'm just replacing the chain/gears on the stock cam and no smog is needed." They will give you the proper advice.
Comp cams: 800-999-0853 ask for the tech dept
With do respect to tbear853:
Red Tail, you are probably going to be setting this up at +4 but it pays to take the time to make sure first.
.
I did a little research on this and here is my conclusion; so to speak.
Problem: Most of the references are when people are also replacing the cam or the threads ended without conclusion. No definitive answer found....
Solution: Call the timing set manufacture of your chain-set or call comp-cams and talk to the tech dept. Tell them what you are doing. ie: "I'm just replacing the chain/gears on the stock cam and no smog is needed." They will give you the proper advice.
Comp cams: 800-999-0853 ask for the tech dept
With do respect to tbear853:
Red Tail, you are probably going to be setting this up at +4 but it pays to take the time to make sure first.
.
gave em a ring and they told me to put in on straight up. looks like my parts are coming in today, so get everything I need today! thanks again guys!
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So, couple questions before I button this all up
1 what type of fluid should I run in my stock power steering unit? it does not specify a type... tranny fluid? power steering fluid? or??
The truck came to me with stock 28 inch (or thereabouts) tires and I put on 33's. How much isw my speedo going to be off?
1 what type of fluid should I run in my stock power steering unit? it does not specify a type... tranny fluid? power steering fluid? or??
The truck came to me with stock 28 inch (or thereabouts) tires and I put on 33's. How much isw my speedo going to be off?
Moderator
Joined: Nov 2007
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From: Denver Metro Area, CO
Most Fords of this era used Type F ATF in the power steering.
Hotshot
Joined: Feb 2004
Posts: 10,797
Likes: 2,599
From: The Shenandoah Valley
I say something wrong? Stock it's set 4 degree retarded by how the keyway is cut in reguards to the sprocket teeth, the cam is thus "late". You want it "straight up" or even "4 degrees ahead" as in advanced.
I didn't go into it, but I think mine is 4 degree advanced .... was 23-24 years ago I done it. I did screw up and put a Crane Fireball Cam in it then (not a bad screw up, but I could've done better I think), next time in the 400 it'll be a CompuCams product. Sounds good, but I think a little less overlap would have worked better.
