Supertech Valves 4age

[Raleigh]

Hi all,

Real time Feed back is required on the performance of the Supertech valves used in a 16 valve 4age in the Standard size using factory original valve seats.

I have had first hand reports of the stainless supertech and Ferrara inlet valves "galling" and are uncompatiable with the orginal factory valve seats in the 20 valve engines,with valve clearances closing up after only a few hours track time.The problem is overcome by insalling new valve seats.


https://www.supertechperformance.com...ec=400&em=5581



TEVN-1019

Black Nitrided Exhaust Valve
Head Diam: 25.50mm (std)
Stem Diam: 5.97mm
Length: 99.75mm
Material: Black Nitrided
Valve Type: Exhaust



TIVN-1019

Black Nitrided Intake Valve
Head Diam: 30.50mm (std)
Stem Diam: 5.98mm
Length: 99.60mm
Material: Black Nitrided
Valve Type: Intake

Stock Size / Undercut / 30 Backcut

[trdee]

i've heard of the titanium retainers fretting and turning to shit, haven't heard anything about the valves though