Topic: Vanguard Valves

[Cheen1989]

Does anyone know the difference in the size of the 35 and 38 vanguard intake valves? Was wondering if its worth to put a 38 intake valve in. Or if anyone that would have a suggestion for a larger intake valve for a 35 cube vanguard set of heads.

[Gui961]

+2 intake and +1.5 exhaust on the 38. they work nice with the stock seat. good for a mild build

[Cheen1989]

Would that be in mm?

[Gui961]

yes
31mm intake 38ci vs 29mm intake 30-35ci

27.5mm exhaust 38ci vs 26mm exhaust 30-35ci

[Cheen1989]

Alright. Thank you very much for the info.

[Benson1]

Can or do they make even bigger and would it be worth it for the 35?

[Cheen1989]

I know e.c. does sell larger valves but the require the valve guides to be made a little larger because the stem is  larger

[Gui961]

Yes bigger valve is better it will make more power . but what are you trying to do a mild build or max effort build. its not the same budget... for mild build 23hp valve size will work just fine . but to fit bigger valve you will need a bigger seat add more cost ... EC . performance vtwin and tyler cromwell have bigger valve