Re: IAT box & dyno results -- tech discussion

From: Bob Tom (tigers@bserv.com)
Date: Sat Mar 24 2001 - 09:21:43 EST


At 12:18 AM 3/24/01 -0600, you wrote:
>Yep - still alive - just kinda depressed lately as my engine is sitting out in
>the driveway w/the pistons fully exposed 8(. I was expecting to find a blown
>head gasket - but see no evidence of it. I know that doesn't mean it wasn't
>blown but for some reason I can't put it back together yet - not enough of the
>right parts I guess 8). <SNIP>
>The combustion chambers looked kinda sick tho. Obvious signs of the pinging
>(burning oil vapors) and poor flame travel. White calcium/sulphur deposits on
>the valves and even some unburnt fuel deposits - piss poor shape
>basically. Not
>sure what I'm gonna do about that. I want the new R/T heads w/the 3/8 valve
>stem size and all the goodies to go along w/them. Can't afford them fully
>loaded tho. Pistons look to be cast with a slight dish - unlike what I have
>been told (hypereutectic).
>
>Coolant was broke down in a bad way - worse than I've ever seen. Not acidic
>enough to start eating parts tho thank goodness. Water pump looks brand new
>(??). Still have the timing cover and oil pan to go before I can even think
>about putting it back together. <SNIP>
>
>Ideas/Thoughts/Theories? Thanks! Shane

Hi, Shane

The only thing that comes to mind is to carefully examine the heads
(especially leading between/from the valve compartment) for tiny hair-line
fractures. I had a problem of normal/hot coolant temps for no visible
reasons once in another vehicle. Only after much external examinations
were the heads pulled and the hairline fractures discovered (almost
invisible without careful examination ... magnifying glass would help
... use of a dye as well).

Hope that you don't find any of these !!!

Bob



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