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Old 03-12-2019, 02:46 PM   #1
hessam69
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Default World record NA Volvo B230 Overboostracing 531 cylinderhead

8 valves!

https://www.youtube.com/watch?v=lCU9C7_Kg0g
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Old 03-12-2019, 02:50 PM   #2
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Inb4 "What are the specs, because I'm never going to build this engine."

That's impressive.
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Old 03-12-2019, 04:12 PM   #3
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thats pretty amazing
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Old 03-12-2019, 04:17 PM   #4
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Looks like b23 crank front pulley to me.
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Old 03-12-2019, 04:54 PM   #5
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I always read the internet lore that said the head was decent enough. It was the intake mani that was garbage.
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Old 03-12-2019, 06:58 PM   #6
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The last engine was a B23 with a longer stroke crank
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Old 03-12-2019, 07:28 PM   #7
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So what's it mean when the lines cross at ~5800 rpm instead of 5252 rpm?
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Old 03-12-2019, 10:28 PM   #8
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So what's it mean when the lines cross at ~5800 rpm instead of 5252 rpm?
Using different scales for torque and hp can cause this issue.
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Old 03-12-2019, 10:57 PM   #9
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Using different scales for torque and hp can cause this issue.
Nm and KW
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Old 03-13-2019, 02:04 PM   #10
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That's approaching 2v Evo head power. Still a bit short, but probably a bit cheaper than the evo head.
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Old 03-13-2019, 05:41 PM   #11
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So it's B23 world record or B230? Or is it B26? Ha..
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Old 03-13-2019, 05:51 PM   #12
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looks like a b230 with the boss on the left on the dizzy port of the block


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Old 03-13-2019, 08:21 PM   #13
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I could feel the head lift from here... never mind, that was my junk lifting.
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Old 03-13-2019, 09:10 PM   #14
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I could feel the head lift from here... never mind, that was my junk lifting.
This took four reads of this to get the correct meaning.
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Old 03-13-2019, 11:46 PM   #15
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^^^ ask your mechanic about LS, for those where OEM doesn't cut it anymore....
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Old 03-14-2019, 01:58 PM   #16
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Old 03-14-2019, 03:29 PM   #17
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Engine dyno 302.4 HP
Chassis dyno 275.9 WHP

Only 8% drivetrain lost?!?!
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Old 03-15-2019, 09:27 PM   #18
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Better tuning after it went in the car?
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Old 03-15-2019, 09:42 PM   #19
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The engine gained 200cc between the first and second videos.
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Old 03-19-2019, 02:49 PM   #20
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The engine gained 200cc between the first and second videos.
150 (during first video the graph shows 2650cc.. who knows though..)

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