Tensioner Arm Removal is fight back.
10-02-2023, 05:35 PM
#16
Rennlist
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The 5/8 sprocket is more heavily loaded than the 1/4 sprocket due to the fact that it is also pulling the 1/4 cam bank. Although difficult to say from your photo that 5/8 sprocket is probably at the end of its useful life given the coating has seemingly gone. The coatings can be re-done if metal has not been removed.
The water pump shaft corrosion is interesting in that such should just not happen whilst the chemical package is viable. Is the impeller steel or plastic? I am guessing it is plastic.
The water pump shaft corrosion is interesting in that such should just not happen whilst the chemical package is viable. Is the impeller steel or plastic? I am guessing it is plastic.
__________________
greg brown
714 879 9072
GregBBRD@aol.com
Semi-retired, as of Feb 1, 2023.
The days of free technical advice are over.
Free consultations will no longer be available.
Will still be in the shop, isolated and exclusively working on project cars, developmental work and products, engines and transmissions.
Have fun with your 928's people!
greg brown
714 879 9072
GregBBRD@aol.com
Semi-retired, as of Feb 1, 2023.
The days of free technical advice are over.
Free consultations will no longer be available.
Will still be in the shop, isolated and exclusively working on project cars, developmental work and products, engines and transmissions.
Have fun with your 928's people!
10-02-2023, 05:49 PM
#17
Rennlist
Basic Site Sponsor
Basic Site Sponsor
I've got another stack, where the aluminum is just barely showing through.($150.)
And I've got stacks of ones that look like your worn gear. (Not for sale.)
I've got stacks of aluminum oil pump gears with excellent coating and no cracks. ($50.)
I've got some used steel oil pump gears with minimal wear. ($100.)
It's a really rare event, where I don't install all new gears on a rebuilt engine, regardless of condition.
"Rebuilding" in my shop, means I expect nothing to need to be replaced for 60,000 miles.
Most others define "rebuilding" as "localized repairing."
There's a market for both.....
10-02-2023, 07:41 PM
#19
Rennlist
Basic Site Sponsor
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I spend 80 hours a week, 50 weeks a year, doing only 928 stuff. A few hundred new cars, every year, to figure out.
The result is that I probably see more stuff, by accident, than you will ever notice, on purpose.
The rust around the perimeter of the impeller tells everything he or you needed to know.
Obviously not plastic!
BTW....The "rolling laughing smiley" should embarrass you!
I'm to one that should be sending you that.
Last edited by GregBBRD; 10-02-2023 at 07:43 PM.