2000 Challenger (2) 717 piston rings

[David Shore]

Compression was 143, 142 on right engine but decided to rebuild anyway because left engine was crap. Left engine is complete.
Right engine had no damage to pistons or cylinders, walls still had cross hatching.
Pistons are ELKO 2183, *011, 82-6 and marked 81.90 and measure @81.86-81.88
Cylinders are standard bore size 82mm and measure 81.96-82.01
Can I just do new rings considering compression was still really good?
What brand should I use for OEM pistons?
I’ve been reading that cross manufacturing parts isn’t good. I have the factory specs but need some math help I guess and expertise.

 

[mikidymac]

Your compression is almost perfect. 150 is brand new perfect compression.

So to answer your question do not do anything to the cylinders, pistons or rings.

Install new head o-rings and put her back together. But if you want to throw money away I'll send you my paypal address.

 

[David Shore]

Was hoping I didn’t have to admit this but they “accidentally” got thrown out [emoji51]
I was rebuilding 3 717’s at the same time, had to many piles and baggies and not enough labels. .
It was the same night I spent 2 hours looking, flushing and counting down 7 of the 34 wrist pins that fell into the crank [emoji849]

 

[mikidymac]

The Elco are OEM pistons so you will have to use the OEM rings as the aftermarket ones are different.

Bottom Ring..........Each
420815080
Rectangular Ring, Sdt, 82.00 mm
This part replaces 290815080.
MSRP: $24.49
Dealer Price: $24.49

Top Ring.......Each
420815070
Semi-trapez Ring, Std, 82.00 mm
This part replaces 290815070.
MSRP: $43.99
Dealer Price: $43.99

 

[David Shore]

Ya, that was an expensive accident. .
Thank you for the reply with part numbers! You’re awesome.
Where do I send tip money??

 

[mikidymac]

I work for thank you's.

Trust me, we have all done stupid things with these skis, you aren't alone.

 

[David Shore]

THANK YOU!
If you’re ever up in the Puget Sound area, let me know, we can hang out in the front yard [emoji1303]

 

[mikidymac]

THANK YOU!
If you’re ever up in the Puget Sound area, View attachment 52648let me know, we can hang out in the front yard [emoji1303]

That looks amazing. We have some friends that live in Seattle but haven't been up to see them in 15 years. It is definitely a beautiful place.