500bhp mark is where I put the cut off for wanting to move to forged pistons, pretty much the same point as wanting a crank upgrade.
For 300-350BHP there is no point thinking about forged pistons. Standard oversize pistons is all that is worth using. Yes £350 is a lot of money for normal...
1) the ports are already too big in that area
2) by having the manifold and head port match you then must dowel the manifold to the head so that it fits exactly every time. Get it wrong and you have a ridge causing reverse flow
3) the ideal is to have a step up in the direction of gas flow. The...
You are right in about 12mm lift being the most a stock head can use in valve lift. What you are forgetting about is compression ratio. Increased CR allows for much more cam duration before the cam becomes lumpy. Also a longer stroke will take more cam. The other thing that helps with a slightly...
I would ask Ben (tinus) on the cam
The T5 would likely be ok, bit lumpy on a B230 at idle so probably feel normal on a 3ltr. If you just want a simple drop in cam the H would do it and have all the low grunt you could ever use
I would 100% go for a 123tune dizzy. It drops in and you can run a...
The engine will be a FK not a K
97 is about the best of the easy to find engines. 300BHP can be done with bolt ons. Over the 300 ball park wants rods. 600+ wants forged pistons and forged crank and stiffen the block.
A lot less trouble for making power than what you are used to
The K jet should take to it ok, might run out of capacity at the top end. As it is only for backup then not a issue
I would not put too much effort into the sodium filled valves but they would not hurt.
As you are running LPG there is a lot to be said for converting to LH2.4 and run an...
Without the sensor fitted (not even plugged in) the system will run open loop base map, if the sensor is plugged in but dangling then the ECU with richen the fuel mixture to the max.
As the sensor is a pre cat sensor it does not matter one bit if teh cat is there or not