DIY: TB Coolant Delete

wstar

I believe the rubber tubes for the throttle bypass flow are 8mm (aka 5/16") inner diameter roughly.

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7AT Track Car!
Journal thread / Car setup details

markthomas69

Perfect and thank you. Going to make up a couple bypass tubes this evening.

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Beluga catback exhaust and Y-Pipe. Sport brakes upgrade. 24 row oil cooler. Battery relocated to the trunk.

juld0zer

i was running a pair of U shaped pipes to bypass the throttle bodies while keeping the hoses as-is to aid reversibility. I wasn't satisfied with the messy hoses and the heat radiating off them onto nearby components such as hard brake lines, throttle bodies etc. I went as far as strapping them to the strut bar.

This weekend i decided to get rid of the contraptions completely. The only part i couldn't remove was the hard line behind the intake manifold as it was welded to the vacuum line beneath. I used 5/16 fuel hose with 8mm stainless bolts jammed and clamped in one end.

Since i had already removed the coolant hoses from the throttle bodies, i did not have to remove any intake components.

The hardest and most painful part was actually the hose connecting the metal pipe on the left of the engine (the one which is almost beneath the intake pipe). It probably would've been less painful if i removed the intake pipes in the way but mine are double wrapped so that was going to be a last resort option.

For the hose connecting at the rear of the engine, there's actually heaps of room compared to other areas of the engine bay. Enough room to get a regular pair of pliers down to release the ring clip. Any stubborn hoses - simply jimmy up with a flat blade screwdriver to encourage it a bit then work it off by hand. I suggest lube-ing the plug/plugged hoses before fitting as the one was the most stubborn to push on.

At first it looks daunting because you can't actually see it from either side but don't be afraid to put your knees up on the radiator core support and pull yourself up using the strut bar. You'll be working in an arse-up position on your fours - or if you like, it's a perfect time to call your other half to help

Put a cushion or gym mat on the core support and also on the intake manifold as you'll be resting your elbow there (remove the decorative covers). Much much easier.

On a side note, my heater started working properly after i did this. Maybe there was trapped air in my U pipes because i mounted them so high.

Happy modding