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NA b230 performance upgrades

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Volvospeedcar
Posts: 1
Joined: 16 Apr 2017, 05:01
Year and Model: B230 racecar
Location: Australia

Post by Volvospeedcar »

Hello from Australia
I have a speedcar (dirt racing) that runs a b230 engine on methanol i was just wondering what ignition upgrades and engine upgrades can be done to get more power. Has to stay NA and under 3.0 litre engine capacity. Thanks in advance.
Adam

jakemness
Posts: 1
Joined: 05 Nov 2016, 03:14
Year and Model: 1991 940SE
Location: Boise

Post by jakemness »

There's a few options you have. You can put a 16 valve head (I'm assuming it's 8 valve) on their without too much trouble... but finding the head itself can be a little tough. If you want to stay with the 8 valve head, it's possible to find a 2.5L crankshaft (and matching pistons) and increase the displacement a little bit. There's some pretty aggressive cams you can slap in it as well. There's a lot of information and possibilities out there for these engines. I know this might not be the most helpful thing to do on this site, but you can find a LOT of information on the b230 engine over at turbobricks.com

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93Regina
Posts: 2813
Joined: 18 Jan 2014, 19:11
Year and Model: 93:240/940
Location: Sunflower State
Been thanked: 65 times

Post by 93Regina »

Volvospeedcar wrote: 16 Apr 2017, 05:08i was just wondering what...engine upgrades
1984-B23F engine fitted to automatic had higher compression ratio. But, I have no idea which engines were shipped to your country, and if carb'ed or EFI back then.

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