[blue32]

Alright everyone,

Below is the results Andy @ AMT has sent me to show how restrictive the throttle bodies are on a standard RB26 head.

The blue curve is with the throttle bodies, the green curve without. Both had radius inlets.

As you can see there is a drop of 16 CFM!!

The blips at the bottom are due to the spacing being quite big increments, but it gets the results across.

cheers

Blue32

 

[dodge123]

Who is AMT?What would these results look like on a 'modified' head you assume?

 

[blue32]

The results just show how restrictive the throttle bodies are. AMT are a cylinder head specialist near where i live. They built my engine

 

[Irish GTR]

The results just show how restrictive the throttle bodies are. AMT are a cylinder head specialist near where i live. They built my engine

So what does you use?

Bigger plenum and single throttlebody?