379 Stroker

[hawkster0001]

Ok I see now there 40-34 mm maybe you could put a strd intake valve in for exhaust

 

[duneracerweston]

That would run good but the valleys in the pistons won't. Alow it to cycle without hitting the pistons and bending valves

 

[hawkster0001]

Just did a quick scour of Duncan racings sight and found nothing bit mo oversize exhaust valve available why is this?

 

[duneracerweston]

Just did a quick scour of Duncan racings sight and found nothing bit mo oversize exhaust valve available why is this?

??? I don't know why they wouldn't sell larger exhaust valves

 

[elwood]

??? I don't know why they wouldn't sell larger exhaust valves

There must be a reason why no one makes them, I just don't know it

 

[duneracerweston]

I would still want one I think I might call duncan and see wat the deal is about it

 

[paulie1959]

exhaust valve is not needed on the Warrior, but with porting and every +mm of intake youl gain about 750- 1000rpm
Item # 40-4178B, 7.0mm Diameter Stems
$24.38





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All KPMI Black Diamond Stainless Steel Valves are impregnated by a special German process to .002" deep with a .0002" surface build-up to improve wear properties and reduce friction. This process provides resistance to corrosion and wear that is superior to that developed by hard chromium and electrolysis nickel plating. These valves are light and the profiles provide excellent flow characteristics.









Specifications

Type Intake


Head Diameter 1.654 "
42.00 mm



Stem Diameter 0.2745 "


Tulip Profile 23 º


Overall Length 5.000 "

 

[elwood]

exhaust valve is not needed on the Warrior, but with porting and every +mm of intake youl gain about 750- 1000rpm
Item # 40-4178B, 7.0mm Diameter Stems
$24.38






Email This Page

Save To Favorites





All KPMI Black Diamond Stainless Steel Valves are impregnated by a special German process to .002" deep with a .0002" surface build-up to improve wear properties and reduce friction. This process provides resistance to corrosion and wear that is superior to that developed by hard chromium and electrolysis nickel plating. These valves are light and the profiles provide excellent flow characteristics.









Specifications

Type Intake


Head Diameter 1.654 "
42.00 mm



Stem Diameter 0.2745 "


Tulip Profile 23 º


Overall Length 5.000 "

will that valve work since it has a smaller diameter and is longer?

 

[paulie1959]

that 42mm valve plus porting make the warrior head flow great when you running big bore and stroker motors, the stem has to be cut for you keepers and lenth(I cant give away all my engine secrets LOL)

 

[duneracerweston]

Can you get oversized exhaust valves? Idc if u say its not worth it I want one

 

[ryobi1]

my parts guy told me he had harley sportster valves in his head and i looked at him like he was crazy

 

[hawkster0001]

Maybe he was talking about a warrior streetbike?

 

[duneracerweston]

Maybe but I wish I could get a bigger exhaust valve

 

[ryobi1]

no he was talking about a warrior quad

 

[duneracerweston]

Next time you talk to him ask more questions and bring a tape recorder lol

 

[ryobi1]

ill try im not very sneaky though lol he also tolf me he is selling his 700 raptor because he had his warrior beating big bore stroker 700's hahaha

 

[duneracerweston]

Lol I dout. That but idk

 

[ryobi1]

even though i love my warrior i dont think we have the potential to beat one with even the big 3