Phenolic spacer. I hope spelt it right? [Bloody Morrinsville college] It is suposed to keep heat from top manifold. What it does do is lengthen inlet runners so it can give you more torque lower in rev range.But les power up top..
Can be made from electric meter board.The hardest part of fitting one is finding even longer manifold bolts...
Don't be afraid to try something new. Remember, amateurs built the Ark...Professionals built the Titanic!
Tuned & maintained by "Peppertree Perfmormance". Dart block, Scat 4340 steel crank, Custom C.P pistons.Oliver rods.. Mal Wood twin plate clutch.. Twin SC61/2's,482 rwkw/ 645 rwhp..
Passengers, myocardial infarction material..