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lets talk about pistons
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Posted by bobc [Email] (#473) [Profile/Gallery] (more from bobc) on Tue, 15 Sep 2020 10:17:53 Share Post by Email
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I'll be replacing the pistons in my project Aero car in the next few weeks. I am leaning towards replacing all 4 with 4 pistons from a high mileage, well running donor.
jimmy and rdbets have had success using donor pistons, and I am inclined to do the same.

A few questions:
1 - anyone have experience with ProParts piston rings? I generally avoid ProParts but there are not a whole lot of options.
2 - Can any piston go in any cylinder? They are not in any particular order right?
3 - I'm inclined to use the entire donor piston/rod assembly. Or should I replace the wrist pin as well?
4 - is there a trick to the oil control rings? maybe it will be obvious when I have the new rings in my hands, but I couldn't remove them from the donor pistons without damaging them.

We cleaned up the donor pistons using my drill with Roloc disk attachment and blue Scotchbrite pads.



I was surprised at how soft the piston material is! 
_______________________________________
'08 9⁵ 2.3T SportCombi, Polar White
'01 9⁵ Aero Midnight Blue (benched) 
'00 9⁵ Aero Midnight Blue (rescued)
'99 9⁵ Base model, Cosmic blue
'00 9⁵ Aero Silver (RIP - transmission )
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