Well there ya go.....
Not saying I'd do it this way but if you read the initial post this is what he says from day 1...
NOT everyone has the funds to embark on a total rebuild.
Spark blowout, knock the gaps down a bit and try again, if you had some way of tuning timing you could add a few degrees of advance just before Tq peak (5200) and this would cure it if you had the overhead to not detonate it.
Hotter coils/more dwell is an option as well.
Might want to consider making your self a cutter out of an old valve, you then use a dummy head and a positive stop collar set to the required depth and spin it up with a drill, you do this with the piston/crank locked at it's point of maximum interference this way the pocket ends up in the...
Interference means if a belt breaks a valve hits a piston, NOT that the relief is the wrong size,placement to begin with, get a clue before you start giving your sage advice...
Yes it's quite common, anywhere there's a dirty ground in the car, to test for it you need an Analogue MultiMeter one probe to ground and one in the coolant, it needs to be under .05v to be safe, it will attack the softest metal in the System, usually Aluminium.
In the case of an Al radiator...
No Direct connection other than I wouldn't spend a cent on a 7M head without getting it tested first....
You might want to look closely at the grounds in the car and do a Stray Current test when it's back together, the erosion "might" be as simple as it's had water in the system but quite...
My "guess" is the IL2's blowing out is more to do with stock or missing bumpstops and crashing the Pistons into the bottom of the Shock Tube, this happened to one of my original Koni's....
I'd still have used the parts I ended up with just as I said done the bulk of the work myself it would...
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