I have decided to have some work done on my engine now, before spring autocross and nice weather. The engine has loss of compression in 2 cyls, and bad leakdown (80%) in those cyls. The leak is coming from the exhaust valve and the rings. The engine seems to be running fine, however.
The mechanic is going to take things apart in order to see what is wrong. The thought is that valves will need to be replaced, at a minimum. His estimate is $7000
The $7,000 breaks 50/50 into parts and labor. Here are the big ticket labor costs:
1) Valve grind, replace valves and springs as needed $2600
2) Replace head studs labor $250
3) Engine R&R $400
On parts:
1) ARP rod bolts and head studs $750
2) Valve springs (EBS) $530
3) Exhaust valves $740
4) Intake valves $650
I understand the ARP rod bolts and head studs. The valves and springs are also upgrades. I believe the valve springs are titanium, and the valves are sodium filled? I am not clear on what these enhanced valves and springs get me (more durability for sustained high-revs?
Note that these costs do not include new pistons and cyls should that be needed.
Does this work sound reasonable? This car is driven mostly on the street (with vigor!) and autocross. I have interest in DE as well.
Any thoughts would be appreciated!
David