Gas Flow a 165 Throttle Body
Why gas flow the Throttle Body?
Surely the 165 Intercooler is a larger flow restriction?
This is correct. However as stated above reducing all the restrictions helps to develop more power.
Do you have any measurements?
Below is an illustration of the stock versus the new throttle body. The new gas flowed body's dimensions are in brackets.
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Throttle body dimension comparison |
Can't I get any old machinist to do this?
In a word no... For a start the butterfly valve is not circular, doh! You are going to need specialist tooling...
What does you Throttle Body look like?
Something like this...
Are there any other options?
Yeah, what about fitting an ST205 TB? This is the largest of all the GT4 TBs and measures ~60mm as standard. Whether or not this will fit either a 165 or 185 manifold remains to be seen!