
Valve spring comparison #2
Evo VIII, Stock DSM, Manley, Brian Crower
From left to right
· Used EVO VIII
· Used Stock 4G63
· Used Manley
· Used BC1100
· New BC1100
The EVO springs, set of 16, tested 58-62 lbs @ 1.530
Used stock 4G63 valve spring Appox. 140k miles
56lbs @ 1.530
Used Manley Valve spring, mileage unknown.
78lbs @ 1.530
Used BC1100 valve spring, Appox 5000 miles
85 lbs @ 1.530
There...