Duratec 2,3l roller barrel versus direct to head throttle bodies

[Hanns Per]

I want to modify my 2,3l Coswoth engine from a plain chamber to either

a roller barrel or a

direct to head single throttle bodies.

I know the roller barrel version is more expensive.

But what are the advantages or disadvantages for the two variants?

 

Thank You for Your feedback

 

Hanns Per KOBER

blatting the alps in a CSR 200

[simonbell]

From what I`ve been told there are no tangible benefits from going roller barrell, in fact some would say it is harder to get a smooth idle and smoothness at small throttle openings.

 

I run the Raceline DTH TB`s which I have been more than happy with. I reckon it`s the DTH bit which makes the difference really.

 

The Cosworth roller barrels are pretty chunky.......the raceline ones certainly look lighter.

 

I don`t know if anyone has done any back to back testing on a duratec although I vaguely remember someone doing it on a K series.

 

Simon Bell - Caterham 7 Duratec R

I`ve seen the future.....and it`s powered by duratec Check out the website here

[Rob Walker]

Raceline now sell a 48mm Direct to head throttle body, perfect for anyone hunting for big power ( ie more than 270 bhp) out of a 2.3 duratec

[ELV15]

Hanns,

 

I'm running the SBD DTH throttle bodies and have been very happy with them. They are similar to the Raceline ones, but are tapered.

 

ELV15 - Tom in California -

200hp duratec powered 2003 Clubsport Build pics here: here