When to replace 918s
When to replace 918s I have a set of 918 valve springs on my car that have well over 20,000 miles on them and very many 1/4 miles trips (go to the track every weekend) When should you replce them i am going to pretty soon but i was just wondering.
Originally Posted by VINCE
What cam? Personally I would change them ASAP with 20k miles. I learned the hard way..
As Vince said, he learned the hard way. 918's should be changed out every 15K IMHO because while being a decent spring, they are a SINGLE spring, so if one breaks it's potentially fatal to the motor. Reason being, it doesn't have an inner/outter spring to hold the valve up in the event of a break...
918's are cheap dude, 100 bucks and 2 hrs of your time are worth it..
josh
Joined: Nov 2001
Posts: 34,611
Likes: 2,526
From: Schiller Park, ILL Member: #317
Originally Posted by White98Z
I have a set of 918 valve springs on my car that have well over 20,000 miles on them and very many 1/4 miles trips (go to the track every weekend) When should you replce them i am going to pretty soon but i was just wondering.
15K is a waste, IMO, for mild setups/rpms and mostly street use. It really all depends on the setup and useage though....
15K is a waste, IMO, for mild setups/rpms and mostly street use. It really all depends on the setup and useage though....
JMO
Josh
Trending Topics
Joined: Nov 2001
Posts: 34,611
Likes: 2,526
From: Schiller Park, ILL Member: #317
Originally Posted by Damian
Rebuilding your shortblock because of a broken spring/dropped valve is more of a waste. For 100 bucks and two hours of time, I do not see taking safety measures to keep your motor alive being a waste...
JMO
Josh
JMO
Josh
I put my setup together without the intention of ever messing with springs again (at least not for a long, long time). That's why I chose a mildish cam, Ti retainers, stock valves, and no higher than 6300/6400rpm upshifts. Car sees no track time, all street miles. 50K should be no problem.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0
Brett Foote
