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thelynx
17-12-2006, 02:35
What are the options when it comes to inlets to gain performance?

summeh
19-12-2006, 02:29
Not much I don't think.

It was mentioned about using a PTFE manifold gasket, this helps prevent heat transfer to the inlet manifold from the head, and thus keeps the gases cooler as they flow in to the engine. Apparently AWT was going to be making some, not heard anything more about them though.

Talk to BenR from AWT (on this site), he was talking to me about custom made inlet manifolds for the F7 series engine which he can do. Keeping the standard throttle body and seeing some good gains.

david932
21-12-2006, 19:38
u could match the ports to the head, not sure if theres much gains to be had tho for the amount of work

BenR
21-12-2006, 20:44
zero gains from matching the older clios inlets.

McPikie
27-12-2006, 18:59
zero gains from matching the older clios inlets.

Surely there must be "some" gain, even if it is minimal. I mean, it would give better flow, so if mated to a set of cams, this would improve further??

BenR
27-12-2006, 19:59
nope, zero gain.

There is no miss match, the ports are already large enough to supply a 5.7ltr v8, so opening things up further wont enhance flow.

Lunner
27-12-2006, 20:07
What exactly 5.7 ltr? :wink:

BenR
27-12-2006, 20:27
because its an industry standard size for a USDM car.

A 350 v8 is a 5.7ltr.

stan
27-12-2006, 20:31
God damn yanks! whats wrong with cubic centimeters :lol:

McPikie
27-12-2006, 20:58
So why do people get huge gains from throttle boddies then??

stan
27-12-2006, 21:08
The main flow restriction with the std set-up is in the manifold shape/size and single throttle plate, so with T.B's you are significantly increasin flow ability (VE) of the inlet system.

I think what Ben is meaning is the ports are significantly larger than what is really required for these engines, consequently the opening at the ports are sigificantly large enough...therefore any minor mis-match isnt going to give a quantifiable gain in bhp.

BenR
28-12-2006, 00:41
So why do people get huge gains from throttle boddies then??

one thing is the runner is straight, not snail shaped. Then you get the benefits of uncompramised harmonics coupled with the ability to run cams that are wilder wihtout suffering lope. You can net as much power on a plenum as you can on bodies, but my god do they become painfully gutless low down.