Stayer. Porting the cylinder head. Stage 4.
#16
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#17
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#18
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In the area of the 4th cylinder there is a channel of exhaust gases for the EGR. I disconnected this valve software. This channel should be mute. It will not heat the cylinder head. This will allow you to use a plastic intake manifold. It will also give a more even flow of gases from the 4th cylinder.
This is undercut in the body of the channel.
This is undercut in the body of the channel.
#21
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#23
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Bravo! This is one of the coolest things Ive seen in the 4g69 world for a while!
Off topic, but Im curious since you mentioned it. What do you think would be involved in making a 4g69 have a higher redline? Less rotating mass? Less stroke? Better valvetrain? All of the above?
Off topic, but Im curious since you mentioned it. What do you think would be involved in making a 4g69 have a higher redline? Less rotating mass? Less stroke? Better valvetrain? All of the above?
#24
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Bravo! This is one of the coolest things Ive seen in the 4g69 world for a while!
Off topic, but Im curious since you mentioned it. What do you think would be involved in making a 4g69 have a higher redline? Less rotating mass? Less stroke? Better valvetrain? All of the above?
Off topic, but Im curious since you mentioned it. What do you think would be involved in making a 4g69 have a higher redline? Less rotating mass? Less stroke? Better valvetrain? All of the above?
I will say this, for (N/A) street version 280-300 HP
The racing version of 380-390 HP
#26
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This is the formula:
V = (C x g) / 30
V - velocity of the piston
С - the piston stroke in meters
g - RPM
30 - a constant value. (this is half a minute. You can specify a 60, but it is necessary to increase in 2 times the piston stroke, for 1 revolution, the piston makes 2 movements)
For example. 4G69 piston stroke of 100 mm. (0.1m). in addition, for 6000 rpm the piston speed is 20 m/s.
Accordingly, we can deduce another formula.
g = V x 30 / C
g - RPM
V - velocity of the piston (we took a maximum of 23m/s)
С - the piston stroke (m)
30 - a constant value
For 4G69 23 х 30 / 0.1 = 6900
You can calculate any motor. For example, several Mitsubishi engines and critical turns:
4g63 piston stroke 88 mm (2l) 4 cyl — 7840 rpm
4g69 piston stroke 100 mm (2.4 l) 4 cyl — 6900 rpm
6a13 piston stroke is 80.8 mm (2.5 l) 6 cyl — 8540 rpm
6g75 stroke 90 mm (3.8 l) 6 cyl — 7666 rpm
8а80 stroke 96.8 (4.5 l) 8 cyl — 7128 rpm
A further increase in speed leads to increased wear and destruction. The sharp decline of the resource.
The following 2 users liked this post by stayer:
bakuro117 (Jul 14, 2016),
YourNameHere (Jan 23, 2018)
#30
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