|
Jon,
I second the live forum idea! I'll check my computer for a .pdf of Unitek's cam catalog...I actually don't have their performance one but I'll send you what I do have. I heard that the 531 head for some reason offers more performance-related gains than the 405?? head in our bricks. Perhaps it already has larger valves, stiffer springs, etc. I thought it was found on some Volvo marine Penta engines, but I'm not sure. I just sent out my head to get a radius valve job, and basically had everything replaced...retainers, guides, silencers, springs from Unitek, all those small part items, etc. Hopefully my Volvo guy will get the head back on the engine by the end of this week as I'm def not advanced enough...changing the oil and brake work is the extent of my knowledge! Probably going to get a cam gear especially with an auto setup...advanced 6 degrees. A larger diameter exhaust will def help the VX breathe better...don't go larger than 2.5" though. The B230F+T is more cost effective versus a port/polish NA engine build-up but at this point I'm not about to get involved with swapping parts. I think the only thing to consider is that the compression factor in our engines is higher than a turbo engine. Turbobricks probably has much more in-depth info compared to my jibberish!
Best,
-Adam
--
'92 244GL silver-metallic, 149k, Bilstein HDs, IPD sways, upper+lower braces, Cherry-Turbo strut brace, 240 OEM rear spoiler, 15' Draco Rims, E-codes w/side repeaters, Cowl covers paint-matched, Magnaflow 2.5' mandrel-bent SS exhaust w/Unitek header
|
