Exhaust valve project

The exhaust on the car is a tad noisy when all 4 holes are open so we’ve been running around with one hole on each side plugged. We’ve been looking for a more elegant solution that would allow us to choose the volume.

<p>The starting point, Vauxhall Omega V6 2.5 throttle body, nice and cheap on ebay for £5 !</p>

The starting point, Vauxhall Omega V6 2.5 throttle body, nice and cheap on ebay for £5 !

<p>After chopping the throttle body in half with a hack saw and removing excess bits with an angle grinder it was time to turn it down on the lathe.</p>

After chopping the throttle body in half with a hack saw and removing excess bits with an angle grinder it was time to turn it down on the lathe.

<p>This is how it will work in the exhaust.</p>

This is how it will work in the exhaust.

<p>Here's one half down and the other half still with the rest of the metal on it.</p>

Here’s one half down and the other half still with the rest of the metal on it.

<p>Now both are cut out on the lathe.</p>

Now both are cut out on the lathe.

<p>Test fit with valves closed.</p>

Test fit with valves closed.

<p>Valve open!</p>

Valve open!

<p>Hold drilled through exhaust tip, throttle body metal fitted in test fitted.</p>

Hold drilled through exhaust tip, throttle body metal fitted in test fitted.

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