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Here is a good resource:
http://www.turbobricks.com/mods.php
These are the things I dream of doing:
Low risk modifications with little mechinical changes:
1. Isuzu NPR Intercooler swap - yes, there is another intercooler that drops right in, at it comes from a little cab-over truck! Low risk, as it simply increases the cooling efficiency and ups the air pressure that reaches the turbo.
2. Turbo Plus kit - an option on the 780, and a similiar package was installed on Saab 900s. Allows the boost pressure to rise to 12 psi (from the normal 8) max for short intervals. It's an OEM kit designed and tested on B230FT engines by the lovely engineers at Volvo = must be pretty darn safe!
3. Cold air intake - I just inherited one with my 940 Turbo - my guess is it will reduce the air flow lost due to the normal airboxes' restrictions. (a guess - I have not installed it yet) - the Turbobricks site even has this crazy snorkel you can make - and it looks like it would work as there is a round knock-out just ahead of your airbox!
Low risk modifications with more mechanical effort required:
1. better flowing head - i forget the # it is called 530 maybe??
2. different OEM Volvo cam - amazing that there are quite a few different cams released for the B230FT engine!
3. Not too sure about this one, but something about a Garret turbo charger rebuild that uses the T3 impeller and the T4 housing for better flow? (sorry I'm just brain storming here)
4. MegaSquirt - not sure if this is just a B23 thing, or what it is, but it sounds like more fuel...
5. 16V head on a B230FT block - ummm... I need to read more on this.
Way too much:
1. Volvo V8 - a Mustang 5.0 litre V8 apparently fits in quite nicely. By the classified ads though, it looks like you'll lose a lot of money when you decide to sell it. Still - a STUPIDLY fast brick is just the kind of sleeper people like me dream of building.
John
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