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NA b230 performance upgrades

Help, Advice, Owners' Discussion and DIY Tutorials on all Volvo's "mid era" rear wheel drive Volvos.

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Volvospeedcar
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Year and Model: B230 racecar
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Volvospeedcar

NA b230 performance upgrades

Post by Volvospeedcar » Sun Apr 16, 2017 5:08 am

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
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Year and Model: 1991 940SE
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jakemness

Re: NA b230 performance upgrades

Post by jakemness » Tue Apr 18, 2017 8:04 am

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



93Regina
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93Regina

Re: NA b230 performance upgrades

Post by 93Regina » Wed Apr 19, 2017 11:59 am

Volvospeedcar wrote:
Sun Apr 16, 2017 5:08 am
i 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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