Duc's Hybrid build
Thread Starter
Joined: Nov 2009
Posts: 6,984
Likes: 18
From: Marysville WA
thanks for the moral boost.
Three Wheelin'
Joined: Sep 2003
Posts: 1,526
Likes: 0
From: SF Bay Area
Call me inexperienced but this is the strangest thing I have ever heard. Correct me if I am wrong but the guides are made of Bronze and the Valves of harden steel. It would be logical that the guides would wear long before the valve stems. Maybe with a million miles on the engine with multiple valve jobs -just maybe I could buy this. But I have yet to see a 928 go a million miles. Actually from what i have seen with used and abused engines in the 150K mile catagory is very little wear. These engines are not like GM engines and could with care well go a million miles.
Confused
Confused
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Thread Starter
Joined: Nov 2009
Posts: 6,984
Likes: 18
From: Marysville WA
head part number is 928.104.348.2R Intake is 45mm, exhaust is 40. its an EARLY head with shims at the base of the springs, not spring cups.
so those above part numbers are what i need? i can't seem to find any info on the real early head valve numbers...
so those above part numbers are what i need? i can't seem to find any info on the real early head valve numbers...
Drifting
Joined: Oct 2009
Posts: 2,638
Likes: 2
From: Alberta, Canada
Call me inexperienced but this is the strangest thing I have ever heard. Correct me if I am wrong but the guides are made of Bronze and the Valves of harden steel. It would be logical that the guides would wear long before the valve stems. Maybe with a million miles on the engine with multiple valve jobs -just maybe I could buy this. But I have yet to see a 928 go a million miles. Actually from what i have seen with used and abused engines in the 150K mile catagory is very little wear. These engines are not like GM engines and could with care well go a million miles.
Confused
Confused
Moral of the story, change your oil when it starts to look dirty.
Thread Starter
Joined: Nov 2009
Posts: 6,984
Likes: 18
From: Marysville WA
Bingo. just got of the phone with the engine shop asking that same question he did. thats the cause for sure.
Thread Starter
Joined: Nov 2009
Posts: 6,984
Likes: 18
From: Marysville WA
got the rings installed on the pistons. now the fun part of wrist pins and c clips. Question guys. i numbered the rods, but for the life of me i can't remember what way they face.... part numbers to the front of engine or back...... WSM does not seem to say.. at least from what i can find.
Nordschleife Master
Joined: Oct 2006
Posts: 8,575
Likes: 5
From: Orange, Cal
Oil when its working, looks dirty, its the detergent additives that keep stuff suspended in the oil, but if it goes through the filter I suspect its not a wear factor on the engine.