AW794

iTrader: (7)

I've found some googled reseults from different coating company's claiming that the Titanium Nitride (TiN) coating is virtually frictionless and works extremely well with maganese bronze guides (which i plan on using) Does anyone have any previous experiences with this coating? Would this be a worthwhile investment on both intake and exhaust valves? From what I understand it adds, durability, hardness, decreased friction, high wear resistance, and is corrosion resistant. It certainly sounds like a great product.

Grimes

iTrader: (3)

What is your application? Some crazy lift cam?

djfury05

iTrader: (30)

Probably the 07 Z06 in his sig. LS7's have problems with dropping exhaust valves and excessive valve guide wear so that's why he's looking into this probably.

Grimes

iTrader: (3)

Ah sorry.. On mobile app and can't see sigs. Is it better to have harder valve stem or harder guides? I obviously the softer material should wear out first

SS10Tech

Any future valvetrain upgrades in your future? If not, i would recommend it as it additionally promotes resistance to detonation from hot spots on the exhaust valve face; that is where alot of heat is concentrated. Valve coatings are a viable option depending on the future upgrade plans and current wear on the valvetrain.

AW794

iTrader: (7)

I'm putting together some stuff as an upgrade over stock. Ported heads, new valves and maganese bronze guides. Titanium intake and one piece stainless exhaust valves. I would love to get the valves coated while everything it apart. I was curiious if anyone is using coated parts.

96capricemgr

iTrader: (1)

A friend runs titanium valves in a gen 1 motor and I know that some sort of coating was used to try and keep them alive longer on the street.

Mell00

Ti valves use moly on the stems typically. CrN is a bit more economical and DLC on the stems works also but expensive. Moly also typically gives the best bronze guide life for the cost.
TiN is used on the valve seat on Ti valves. Keeps the seat of the valve from wearing.

mark21742

Now I'm starting to wonder how much you could up your dcr on pump gas if you coated the valves and piston with some of the exotic stuff out there....

Jontall

I wouldn't waste money on coating for a street car. I'd buy a set of Ferrea titanium valves and high temp exhaust valves.