In other words, heavier. Which is fine for an engine with a redline 1000 RPM lower. How sure are you that they are fine for the F20C?

 

$2.50 each.

 

Wow, $2.50 could cost you 2k.

 

I'm wondering exactly the same thing. When autocrossing I sometimes end up riding the rev limiter, and the idea of adding mass to the valve train is a little scary.

 

I think it would take a scientist to figure this one out.



*not I*

 

Me either, but I don't see any reason to believe that the regular AP1 retainers stretch and crack unless they're hammered by an over rev, so I'm going to stick with the older, lighter, retainers. Even if I had the thicker retainers I'd still want to inspect them after any suspected over rev, so I don't see any real advantage to justify making the change.

On the other hand, if someone like Billman says the thicker retainers are stretch and crack proof even when the motor is over reved, then I'd certainly upgrade.

 

It's not enough mass to consider added weight. If you have the two in your hands, you'll see exactly what I mean.

 

Do you think the new retainers are strong enough to negate the need for an inspection after an over rev?

 

Great Info!! Thanks! I'll check that out next chance I get!