Pinging on hot days
I have recently (last weekend) replaced the intake gaskets because one port was leaking, and at the same time, installed a 1" alloy carb spacer (will change it to a phenolic one at a later stage)
Driving the car around the last two days, the weather here has been 30+ degrees and anything from around 1/2 - 3/4 acceleration upwards is resulting in pinging. This is the 1st time i've had the car out on a 30+ day.
This is also currently with the bugcatcher off, so the intake temps would be a bit higher than normal.
A/F ratio's are currently quite rich (around 12:1, possibly a bit richer), so i dont think it is a fuelling problem. Only runs BP Ultimate. Nothing has been changed on the carb, except the rear quirter from 31 to a 37.
Base timing is set at 8* and reaches around 30 total, and it comes in by around 3000rpm.
Prior to all this, it only used to ping slightly when really giving it to it, but nowhere near as bad as it did today.
My intentions are to change the spark plugs, again, with colder plugs (BP6FS) and see how it goes.
Would you expect to experience a lot of pinging on hot days, or is it more likely i have got something else going on (hopefully its not the new intake gaskets leaking on the inside)