Throttle Bodies!

I was not convinced I would splash out on the GBS ATR throttle bodies, but I am glad I have. They came nicely packaged in the post and fully assembled with the TPS sensor ready for wiring.

First job was to clean out the intakes on the engine block. A little wire brush and some elbow grease sorted that. Not in a bad state for a 20 year old engine with 80000 miles. I also removed the studs from the block so I could use the nice bolts provided in the kit. Using the two nut method to get them out worked OK with only one scraped knuckle.

Cleaned intake ports!

I then installed the little blanking plugs where the old injectors would be which were provided (at a price!) by GBS. Nice tight fit. After a bit of mucking around I realised the TBs needed to be disassembled to fit onto the block. First was the black part that mounted directly to the block with a fresh manifold gasket. Go easy on the torque for these bolts as the head material is quite soft. I used 22Nm torque.

Part1 of the bodies installed

The next part could then be attached which was straight forward. The trumpets then screw on but the filter plate is meant to go on first.

Trumpets!

The black fuel rail was then put on with the long bolts. I used a bit of vaseline to lubricate the o rings on the green bosch fuel injectors to ensure not to tear the o rings. Looking good so far!

Fuel Rail

The filter back plate is held on by the trumpets and will house the air temperature sensor with an M12 nut with a funny thread. The pipercross filter fits on the back plate with some 25mm DZUS fasteners to make it quick release. Before installing all of this it makes sense to organise and tie up all the engine loom connectors and sensors (like the oil pressure sensor) because space is very limited.

Filter Installed - I think I prefer the Bare Trumpets....