Street Porting

A much more aggressive style of side port intake porting, this method focuses just as heavily on altering the ports timing as increasing the overall volume. When complete, the customer will notice a substantially different physical appearance to the port size and shape. In most cases the primary intake ports remain to be physically smaller than the secondary ports, but, both sets of ports are clearly larger than stock. Final polishing is performed afterwards.

Stage 3 is essentially what is referred to as a race port for side port intake porting. This is the stage where more emphasis goes into enlarging the exhaust ports and the secondary intake ports are taken as far as they can go without cutting into the water jacket. In some cases the primary intake ports become equal in size to the secondary ports except in cases where the water jacket will not allow. We have measured an increase in flow of 16% to 32% using flow bench equipment. Short of switching to a bridge port or peripheral port, stage 3 is the most effective method to achieve power on side port intake applications. Final polishing is performed afterwards.

*note: All 6 port engine will be modified to remove the 5th and 6th port sleeves and an insert is installed to take their place. Special port techniques need to be performed for propper operation and to maximize flow.