What is a 3 valve engine?

S

Synned

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Mar 31, 2005

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Philly

Aug 14, 2005

#1

• Aug 14, 2005

• #1

I don't understand how there can be a such thing as 3 valves per cylinder. I understand 2 (1 for exhaust 1 for intake) and 4 (2 per), but how does 3 work? Sorry if this is a stupid question.

 

DFG 5OH

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Aug 28, 2004

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Louisville, KY

Aug 14, 2005

#2

• Aug 14, 2005

• #2

2 intake 1 exhaust

 

S

Synned

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Mar 31, 2005

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Philly

Aug 14, 2005

#3

• Aug 14, 2005

• #3

Gotcha..thanks

 

DFG 5OH

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Aug 28, 2004

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Aug 14, 2005

#4

• Aug 14, 2005

• #4

:d

 

WhiteDevil

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Feb 4, 2003

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Aug 14, 2005

#5

• Aug 14, 2005

• #5

Yeah they just put an extra lob on the cam to control the extra intake valve and voila more power.

 

pleasehelp

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Mar 11, 2003

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Poplar Grove, Il

Aug 14, 2005

#6

• Aug 14, 2005

• #6

How is 3 better than 4??

 

super302

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May 29, 2004

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Davenport, IA

Aug 14, 2005

#7

• Aug 14, 2005

• #7

pleasehelp said:

How is 3 better than 4??

Click to expand...

its not

 

pleasehelp

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Mar 11, 2003

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Poplar Grove, Il

Aug 14, 2005

#8

• Aug 14, 2005

• #8

Then why doesn't Ford use the on the GTs?

 

WhiteDevil

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Aug 14, 2005

#9

• Aug 14, 2005

• #9

pleasehelp said:

Then why doesn't Ford use the on the GTs?

Click to expand...

Silly rabit 4 valves are for cobras

 

SeventyMach1

Keep it lubed .... keep it straight .... and keep

Mar 30, 2005

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North Carolina

Aug 15, 2005

#10

• Aug 15, 2005

• #10

Well, if he's talking about the "Ford GT" .... then they DO use a 4 Valve. The new "Mustang GT" has a 3 Valve, like the edge Mach 1's. And as John said, Cobra's have 4 Valve motors as well.

 

pleasehelp

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Mar 11, 2003

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Poplar Grove, Il

Aug 15, 2005

#11

• Aug 15, 2005

• #11

I meant the mustang gt. Why don't they just use 4 valves (dohc) instead of 3 valves? Same with the Explorer.

 

1105

I AM the random post master...bow down

May 3, 2003

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Daytona Bch, FL

Aug 15, 2005

#12

• Aug 15, 2005

• #12

4 valves = more moving parts which = more things that can go wrong which = a lot of $$$ to spend to fix. Plus its probably not needed. I thought most of the 3v engines were 1 intake 2 exhaust

 

94GTMOOSE

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Jun 27, 2005

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jersey shore

Aug 16, 2005

#13

• Aug 16, 2005

• #13

i thought it was an issue with keeping back pressue up. thought i read an article that said that. might be mistaking. i will look at the mag later while i am pooping

 

S

Synned

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Mar 31, 2005

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Philly

Aug 16, 2005

#14

• Aug 16, 2005

• #14

So when we rebuild our engines, (HCI), is it impossible to fit 3 lobes per cyclinder with a pushrod engine. I'm assuming so, or else wouldn't there be 3 valve heads for 5.0's. Or is there other problems.

 

1105

I AM the random post master...bow down

May 3, 2003

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Daytona Bch, FL

Aug 16, 2005

#15

• Aug 16, 2005

• #15

You'll need an extra lifter, rocker, and pushrod for each cylinder, along with a new block that could accept all of thoes parts.

 

hauoli63

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Feb 28, 2004

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Northern Virginia

Aug 16, 2005

#16

• Aug 16, 2005

• #16

94GTMOOSE said:

i thought it was an issue with keeping back pressue up. thought i read an article that said that. might be mistaking. i will look at the mag later while i am pooping

Click to expand...

Someone should start a poll about who does or doesn't keep magazines (not Playboy!) in their bathrooms!

 

bjl95mustang

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Jan 18, 2000

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Austin,TX

Aug 16, 2005

#17

• Aug 16, 2005

• #17

hauoli63 said:

Someone should start a poll about who does or doesn't keep magazines (not Playboy!) in their bathrooms!

Click to expand...

Who dosent???

 

CManT1914

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Feb 5, 2004

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Killeen, Texas

Aug 16, 2005

#18

• Aug 16, 2005

• #18

Synned said:

So when we rebuild our engines, (HCI), is it impossible to fit 3 lobes per cyclinder with a pushrod engine. I'm assuming so, or else wouldn't there be 3 valve heads for 5.0's. Or is there other problems.

Click to expand...

You'd need a whole new motor. The block would need 8 extra pushrod holes in it.

 

WhiteDevil

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San Diego

Aug 16, 2005

#19

• Aug 16, 2005

• #19

Synned said:

So when we rebuild our engines, (HCI), is it impossible to fit 3 lobes per cyclinder with a pushrod engine. I'm assuming so, or else wouldn't there be 3 valve heads for 5.0's. Or is there other problems.

Click to expand...

No we drive cars that have a PUSHROD OHV set up. Those 3v motors are modular motors OHC(over head Cam) very different from ours.