A super charged Easter weekend!

Thursday - It's been a long wait but as soon as the box arrived today it suddenly all became worth it, I received the GKD Super Charger kit!

It only took 4 days to arrive from the UK.

What's in the box - Everything that's needed. Inlet manifold, fuel rail, injectors, rising rate fuel regulator, fan belt and the Eaton M45 super charger I bought from Ebay. All put together by GKD and ready to bolt on! Peter also kindly sent me the rear boot cover I had on order.

I removed the battery and air filter assembly

Disconnected the upper inlet manifold

I had a few questions for Peter which he answered in a flash. The kit includes almost everything so the original BMW fuel lines (2) to the fuel rail are no longer needed, pipes (3 & 4) are simply shortened and plugged. The plastic box (5) containing wire harness for sensors, injectors etc. needs to be removed leaving only the harness.

Once the plugs for the injectors were disconnected and nuts to the head and front bracket were removed I carefully removed the lower manifold. It was quite a job to keep the wires organised. Some passed through the middle of the lower manifold, some were simply going to sockets and I cut and spliced two wires to the alternator and starter motor as it was easier than disconnecting them. 

I cleaned up the wiring with electrical tape. The MAF, accelerator position sensor etc. will be at the rear of the engine so they should be run accordingly.

Before bolting down the new manifold I attached the accelerator housing which was removed from the original upper inlet manifold. Also included in the kit is a new bracket which attaches the Eaton to the engine. It's adjustable so the weight of the manifold can be taken off the inlet bolts.  

The new setup is actually lower than the conventional inlet manifold, so no problem getting the bonnet on! Unfortunately the space at the rear of the engine is very tight. I've bought a Varley Red Top 25 which is less than half the size of the standard battery. That's make much more space available, hopefully enough to incorporate the MAF and airfilter.

Friday - .... Finished late last night and continued today, connecting the fuel lines and temporarily connecting  the battery. The earth strap from the old battery to the engine was a little short to reach the Red Top so I'll get one once the shops are open. 

I then test fired it up and, yupp it started but it didn't run as I expected. Quite rough and stalling with no throttle. Peter suggested I checked the manifold bolts were tight enough as air could be seeping in. The more I tightened the better it became but still not perfect. I neglected to buy a new manifold gasket so I'll replace it and check again.

There is also a necessity to replace the belt tensioner and also add another pulley to keep the belt away from the radiator hose housing. 

Sunday - Neil came around this morning for 8k run (pre Amsterdam marathon training) and then we got on with some last jobs before taking it for a test spin. Put fan belt in place, had to make a small adjustment to one of the pulleys to get it in line with the belt, easily done by adding or removing a washer or two.

Kept nicely away from the radiator hose

Another small job was to make up a bracket to hold the dip stick tube in place. I made it out of 1mm stainless steel but it should really be 2mm. Still it's an okay temporary solution.

The whole engine looks really great now. The new coil over plugs and the SC are going to transform it.

Time to get it out for a test drive ...

Warmed up the engine and topped up the radiator as well as added some STP Oil Treatment. A bit slippery getting it out of the garage but with a little push ...

Then it was time for the open road! The sound has changed, deeper than before but I don't think it's so loud now. It'll be interesting to test decibels before Brands Hatch track day. Once out on a clear length of straight road I floored it. In first I had to change almost immediately to second. In second gear it was spinning the tyres so I had to ease off a little. Both Neil and I were gob smacked how much power it has. It had power before but it's now at a whole new level. I'd like to put it through its paces on a wider open road like the motor way and see what she can really do but that has to wait a week or so until everything on the car is finished.

The first supercharged 0-100km/h. Didn't go so well but with some more timely gear changes it'll improve. As you can see it goes well up into the red - the speed limit problem is now solved!

 More news coming soon.