Quote Originally Posted by TODA AU View Post
It is true & it is an issue on road engines that are expected to go past 100,000km
It's not an issue for race engines as they are pulled down regularly & freshened up.
In this case, valve springs, valve spring retainers, rings, bearings etc are all regarded as replacable wear items.
if you're going to use Ti retainers on a road car, be sure to use a set that locks into the top of the spring.
This will mitigate some of the risk, but not eliminate it.
If the car isn't going to see the circuit, save your money & skip using these parts.
If you are going to see the circuit, they're a bit of extra insurance against to loose nut between the steering wheel & the seat.
Haha thanks champ, appreciated. Excellent advice as usual

This car will only be a road car, spirited drives etc. So with a set of bigger cams, for example Spec B's, do you recommend new oem ITR retainers? Or are B18c2 retainers sufficient?