Bomz Air Induction Kit (Mondeo Mk1/2/3, Focus Mk1/2)

Bomz Air Induction Kit

Background

I thought I would have a go at writing this as fitting an air indutcion kit to a Zetec engine seems to be a highly popular mod. Not only will it enable the front end of the engine to breathe easier, but it will also induce a big smile as you put your foot down...

There seem to be a few variants of the Bomz kit, so there is no generic instruction set, but hopefully you'll get the drift from this...

Parts

• A Bomz induction kit for a Focus Zetec engine
• A Pipercross mini-filter (depending upon the Bomz kit variant you have)
• Craft drill kit
• Cable ties
• Cap from an aerosol can
• Araldite
• Standard tools (Socket set, screwdrivers, spanners, etc)
• Washing up liquid

Preparation

• Unscrew the jubilee clips retaining the resonator box/cold air sensor assembly and MAF housing
• Remove the resonator from its mount at the front of the engine bay
• Carefully unscrew the air temp sensor from the resonator housing
• Take the housing and use a cutting wheel on the craft drill to remove the resonator extension. File away any loose bits of plastic. Note that you will need to leave a lip of approximately 2-3mm, so avoid making the cut absolutely flush with the rest of the housing
• Take the cap from the aerosol and file out a crescent shape so that when mounted on the lip mentioned above it is relatively flush with the rest of the housing. I found that the cap from a tin of Halford's spray paint is virtually a perfect fit
• When satisfied with the overall fit of the filed-down cap, glue it in place using the Araldite
• Once the glue has set, the air temp sensor can be screwed back into the housing
• Remove the plenum chamber from the top of the throttle body. You will need a 10mm socket for this
• Disconnect the crankcase pipe from the underside of the plenum chamber
• Remove the air filter cover and separate the air filter holder from the cold air feed on the inside of the wing
• Remove the air filter itself. The air filter holder can be eased off by rocking it from side to side and lifting - it is not held in place by any screws or bolts
• Disconnect the rocker cover vent from the rocker cover

Aerosol cap on the air temp sensor housing

Fitting the Bomz Kit

• Smear a little washing up liquid on the inside of the blue rubber elbow and ease it over the top of the throttle body. Secure it with a jubilee clip
• Attach the supplied aluminium pipe to the blue elbow
• Attach the rocker cover vent to the aluminium pipe using the blue hose supplied
• If the blue elbow has a hole in it, fill it with the crankcase breather pipe. If it doesn't, you will have to attach the breather pipe to the Pipercross mini-filter, which will also need to be secured
• Connect the air temp housing (with the aerosol cap) to the aluminium pipe
• Connect the MAF pipe to the air temp housing
• On the kit that I bought, the filter cone and MAF pipe were the same size, so one end needed to be reduced. I ended up using Araldite to glue the blue adaptor ring to the filter cone and then attached this whole assembly to the MAF housing

[Image:http://www.fordmondeo.org/workshop/images/DSC_0058.jpg Pipercross filter on the crankcase pipe and the elbow on the throttle body]

The whole assembly just about fits into the engine bay with about 1" between the end of the cone and the cold air feed in the wing.

Submitted by chrisw