So I've been testing the phenolic fibre washers between the fuel rail and head and rail and nut.
I converted from bolts to studs to make things a lot easier to install
Measuring the temps on a stock fuel rail was between 200f to 210f at idle after a cruise which is the same temp as the head.
With the phenolic washers
Cruise temp was 128f to 140f
Spanking temp was 158 to 165 with head temps of 218f
I'm only working with surface temps of the rails and lines and the difference is between 45f to 72f.
Not bad for under a dollar worth of gaskets and it was tested with the engine cover on, running an aftermarket vc the temps are even lower.
Is there any benefit, haven't tested that properly yet as we are in lockdown except when I drive to work.
But going of past experience lower temps help with cylinder cooling, resistance to engine timing drops and makes more hp.
How much benefit there is I don't know but for less than the price of a bottle of coca cola I think its worth it.
I converted from bolts to studs to make things a lot easier to install
Measuring the temps on a stock fuel rail was between 200f to 210f at idle after a cruise which is the same temp as the head.
With the phenolic washers
Cruise temp was 128f to 140f
Spanking temp was 158 to 165 with head temps of 218f
I'm only working with surface temps of the rails and lines and the difference is between 45f to 72f.
Not bad for under a dollar worth of gaskets and it was tested with the engine cover on, running an aftermarket vc the temps are even lower.
Is there any benefit, haven't tested that properly yet as we are in lockdown except when I drive to work.
But going of past experience lower temps help with cylinder cooling, resistance to engine timing drops and makes more hp.
How much benefit there is I don't know but for less than the price of a bottle of coca cola I think its worth it.
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