Pulling The Heads
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Grand Champion
Joined: Apr 2009
Posts: 5,293
Likes: 3
From: Kekaha, HI
Are we talking about an I4?
An easy way to look at our 4.7L engines is this. Pistons are connected to rods and rods are connected to the crank. The crank controls the pistons compression and exhaust strokes.
The valve train is in on the heads. Cams shafts turn in harmony with the crank via timing chains and sprockets. Camshafts control the valve intake and exhaust. On the heads you also have the fuel injectors and spark plugs.
Basically every engine does #1 intakes air #2 compress air/fuel #3 combust compliments of the spark plug #4 exhaust
An easy way to look at our 4.7L engines is this. Pistons are connected to rods and rods are connected to the crank. The crank controls the pistons compression and exhaust strokes.
The valve train is in on the heads. Cams shafts turn in harmony with the crank via timing chains and sprockets. Camshafts control the valve intake and exhaust. On the heads you also have the fuel injectors and spark plugs.
Basically every engine does #1 intakes air #2 compress air/fuel #3 combust compliments of the spark plug #4 exhaust
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yep, just like any air pump.
A "V8" refers to the way the pistons sit in a V. same thing with a V6
looking at the motor from the front it makes a big V where as an inline 4 or 6 is just a straight up and down stroke.
thats where the V comes from. you have heard of I4 or inline 4's and the jeeps used to have the 4.0 inline 6.
A "V8" refers to the way the pistons sit in a V. same thing with a V6
looking at the motor from the front it makes a big V where as an inline 4 or 6 is just a straight up and down stroke.
thats where the V comes from. you have heard of I4 or inline 4's and the jeeps used to have the 4.0 inline 6.
Thread Starter
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Grand Champion
Joined: Apr 2009
Posts: 5,293
Likes: 3
From: Kekaha, HI
Thread Starter
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Grand Champion
Joined: Apr 2009
Posts: 5,293
Likes: 3
From: Kekaha, HI
Yes Sir, that was my latest tuning hurdle. My WOT 3rd gear shifts were really lean. As soon as I get this sucker back together I will run the new blower tunes and see where I'm at.
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Grand Champion
Joined: Apr 2009
Posts: 5,293
Likes: 3
From: Kekaha, HI
I think only in Europe.
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do you consider the boxer style a flat head? or would it be horizontally opposed?
Blown, that 3rd cylinder back is awfully black. It could be the lighting, but if thats carbon build up, you might want to double check those vales. a compression and leak down test on that cylinder might also be a good idea.
Looks like a fun project man.
Blown, that 3rd cylinder back is awfully black. It could be the lighting, but if thats carbon build up, you might want to double check those vales. a compression and leak down test on that cylinder might also be a good idea.
Looks like a fun project man.
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Grand Champion
Joined: Apr 2009
Posts: 5,293
Likes: 3
From: Kekaha, HI
Its been fun so far. I made this procedure for pulling the heads with the timing chains still in place. All the pubs and experts say the chains have to come out, but I thought up a way to pull them with the chains in place, lol.
That 3rd cylinder is the point of fail for the headgasket. I shop-vacced about 8 oz of coolant out of it, lol.
That 3rd cylinder is the point of fail for the headgasket. I shop-vacced about 8 oz of coolant out of it, lol.