Originally Posted by
roadracer43
The head on the grp .21, (non-tuned version) the silver one, looks alot different than others. It looks like a solid piece of aluminum with just some ridges cut around it. Why is it different than others and is it a big deal as far as cooling ? can it be changed or does it need to be ? sorry for all the questions, Im just trying to learn as much about it as possible before I buy it from amain.
it seems if you have a non tuned version ...you cannot put the tuned (orange head on it) the head on the non tuned is fine and you will save money on glow plugs ....awesome motors tuned or non tuned ....check out
www.powerhousercperformance.com ......i believe mark still has some non tuned versions with his race port on them for 260.00 i believe frank l up there runs marks motors ...as do i ...they are awesome and for 60 bucks more than amain ...you will get a motor that will perform as well or better than the tuned version .....