Stiffer valvesprings

**cobrahunter** · 02-04-2007, 02:19 AM

Okay, so I plan on going with a more aggresive cam. I'll be swapping out my valvesprings, retainers and pushrods for sure. My question is that I hear after you install stiffer springs, you need to make sure the car is fully warmed up good before hitting high rpm's, or else I could go breaking springs.

How true is this?
What is "fully warmed up"?
I don't plan on redlining it that often.

**INMY01TA** · 02-04-2007, 03:33 PM

Not a good idea to beat on any car until it's warmed up. I generally try to keep the rpms under 3,000 till it's warmed up. I've got a TR224 cam with Comp 918s for about 4 years now. No problems.

**mrr23** · 02-04-2007, 04:52 PM

with the steel materials that are used to make springs these days, there is no need to get them warmed up. it is a good idea to get the motor to operating temps so as not to scar the cylinder walls.

**cobrahunter** · 02-05-2007, 08:14 PM

Okay, seeing that I don't want to jack something up with my engine, and have no experience with going with a more aggressive cam/springs...how long does it take to get to "operating temperatures"?