B20 build

[tdz840]

Originally Posted by Amazonjulian

Head flow is up 9%. We've taken a mm off the head and going for 10:1. The overbore is to 2130. Balanced bottom end. I'm sticking with SUs and have rebushed and rejetted them, steel timing gears and the sensible modern crank seal arrangement. I'm already running a 123 distributor and will go for an electric cooling fan. I am replacing the oil pump because the old one was only just within tolerances and it seemed a false economy not to. I'm running a Simons exhaust and standard twin down pipe manifold because at the end of the day they're pretty good. Getting to the nice bit now- screwing it all together

I wish I had gone larger on my overbore.
i took the decision to go forged Pistons from Ross and they only had +30". However I recently thought I had an issue and pulled the engine to check.
On strip down everything was in excellent order and the Pistons had no sign of detonation ( they are ceramic coated as well) so I'm confident all the bits are working comfortably together
Did you go for the 123Tune model and if so what curve are you starting with?
With the side drafts it's so difficult to hear detonation and I have a fear of running too advanced. I'm thinking of investing in some type of detonation device( or headphones) anyone have any recommendations?
I fitted a Mellings pump on advice from Phil Singher. They don't have an outlet in the UK but they do have a representative. I contacted him and he obtained a pump for me. Much higher quality, nice and chunky. I have a feeling it may be the HD version on the SKANDIX site.
I think I've seen your car at Goodwood as I have exactly the same pic in my files that I took when I was down there for the breakfast meeting!
Nice car
Russ