If you have been following our EJ257 engine build series with IAG Performance, you have been able to look inside IAG’s incredible attention to detail in machining and parts selection. Now it’s time to bring all of the parts together and assemble them in IAG’s incredible engine assembly area!
IAG has a huge engine assembly department. Final assembly is done in two large clean rooms with controlled environments. One room is for bottom end assembly and the other is final assembly. They are well lit and nearly surgically clean with a slight positive pressure ventilation system. The cleanrooms are cleaner than your house and you literally have to walk through double doors and over a tack sheet to pick all the dirt from the soles of your shoes to get in.
To start our build the Calles connecting rods were pre-assembled with the pre-sized bearings being put into the rods along with putting assembly lube on the rod bolts. Assembly lube is critical for correct rod bolt torque readings.
Lube is applied to the bearings on the rod.
The rod is placed on the crank.
The corresponding cap is lightly tapped in place with a small dead blow mallet.