Hasselgren 4age billet barrel throttle

[PRIMRK]

While looking for some ideas of what to use for throttles on the 3UZ-FE I came across the 'roller' type throttle body, i had never heard or seen these before so i thought id chuck them on here for every one to have a look at it.

More info and pics here:

[plohl]

splooge!

[hachirusto]

very cool but I don't think they would be as responsive as a normal butterfly more mass to move when opening

[n2866]

they are the oppisite of what you think actually alot rougher and produce more power..when driving they are closed or a bit open hard to explain but ive heard you would struggle to drive on the roads

[lolwat]

only good if your either off it or flat chat gasing it

[PRIMRK]

but unlike slide throttles the application is still linear

[ke_70]

i would say they would have much better air flow as there not a butterfly in the middle disrupting and restricting air flow (air velosity?).

these would have a much more smoother and prisice power delivery.

these are just my own observations. so i could be completly wrong?

[n2866]

yes you are right about the first wrong about the second.

[plohl]

^^ mostly at WOT though - intermediate throttle positions would still have loses similar to a butterfly valve.

And I don't think the actuation would be linear unless you were running a well thought out cam in the linkage. Area would increase a large amount during low to medium throttle positions and level out toward WOT. One of the reasons why they're not really suited for road cars.

[Twinky]

Who races down a straight at half throttle anyway? I could see how this wouldn't be too good for trailing throttle though, but I wouldn't say that it would be all that bad.