Quote:
Originally Posted by tikamak
Even if you don't track your S54, I believe the 100K mark is when you want to rebuild your engine to last an other 100K without having a risk of blowing out or leaking or such.
What i have found so far is that you need the following items when rebuilding an S54:
Mandatory:
Engine block set 11110302722
Head gasket set 11127831920
Head gasket 11127835918 (you can use MLS 0.04" thick)
Rod bearing set 11410395192 (comes with bolts and oil filter)
Main bearing set 11211706847
Optional for racing and/or better reliability:
ARP S54 Head Stud Kit
ARP S54 Conn rod bolts Kit
ARP S54 Main Stud Kit
VAC Euro Oil pump +22% flow
While you're in there:
forged pistons
con rods
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What are you basing that on? I
rarely s54 S54s with leaking head gaskets that haven't been overheated (or horribly tuned) and main bearings wearing out are almost unheard of on non tracked S54s (and rare on tracked e46s as well).
I'd say do the rod bearings when oil analysis says it's time and main bearings.. I can't imagine them needing to be done on any car before 200,000, more likely 250-300,000 miles.
For context, my car is almost to 140,000 miles, ~4000 of which are track miles. Rod bearings needed to be replaced at ~125,000 miles (knew because of oil analysis said excess coper and lead). Crank bearings inspected while doing the rod bearings and they still looked like new-- no wear at all.
Compression/leakdown tests show the the head gasket is still holding strong.
ARP stuff is super nice, but the only significant benefit over stock is that it's reusable. If you're doing rebuilds every, say, 200,000 miles, that's going to take a long time to pay off. It's certainly not worse in any way other than price, but I don't really see the benefits as worthwhile-- new stock is cheaper and works just as well.
What you're suggesting is exceedingly expensive... and pointless. Certainly for street only car, really for tracked cars as well.