Originally posted by 99B16Si
why u say 81 and not 84mm???
and what do u have against eagle rods and 400whp?
81mm bore will give you a whole lot more Sleeve to support that Combustion Pressure...You gotta understand that a 14:1 HiComp GSR will make about 800psi of Combustion Pressure on an 84mm bore whereas his 400HP Turbo GSR will make about 2000psi of Combustion Pressure on the 81mm bore...
That is quite a difference of Combustion that the sleeves have to absorb...
The 81mm bore will have thicker more sturdy sleeves and will also dissippate the heat much more than the 84mm bore...The 84mm bore will help unshroud the valves which is neccessary to make Max Power with an Allmotor setup...Unshrouding the valves are not needed to make power with FI...
You pay more for the Crower, Pauter, Carillo, Cunningham Rods because they are tested and tested and tested throughout every machining process...Each individual Rod is tested seperately...Unlike, Eagle Rods, which test maybe 1 out of every 100 Rods...Now, the Eagles may be just fine but if you want to build your motor with the best, you have to buy the best...
Zee