Well that AOS went from OK to bad quickly

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12-13-2018, 09:40 AM

#16

NuttyProfessor

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Quote:

Originally Posted by dporto

Even the Porsche branded AOS's have been known to be bad right out of the box...I remember reading a thread a year or two ago where JR said he had gotten a high rate of failures (like 2 out of 3 or something along those lines) and he only uses the factory AOS

I would love to know what Raby uses from the factory and what he discards as well as what he creates himself when "reconstructing" these motors.

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12-13-2018, 09:57 AM

#17

dporto

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Quote:

Originally Posted by NuttyProfessor

I would love to know what Raby uses from the factory and what he discards as well as what he creates himself when "reconstructing" these motors.

It's all on his website. Most/all of his "upgrades" are to the internals of the engine. Nickies (cylinders), pistons, rings, connecting rods/bolts, timing chains. timing chain paddles, valve guides, head porting, (head work/valves etc. depends on type of build) head bolts, low temp thermostat, oil pump drive, etc... Ancillary items such as water pump, AOS, oil cooler, idler pulleys, coolant expansion tank etc. are all factory