My 6.9L IDI Build
#31
I forgot to ask. Did you end up getting new push rods from them as well?
Also Racin what do you think the clearance will be with your cam? Do you think there will be any issues? I know you said they would clear with the stock cam and possibly the torque cam. It will definitely be interesting to see how they perform...
Also Racin what do you think the clearance will be with your cam? Do you think there will be any issues? I know you said they would clear with the stock cam and possibly the torque cam. It will definitely be interesting to see how they perform...
#33
My cam would have a lift of .467" with 1.7's... that is about .008" more than the J2 with stock ratio.... J2 clears with stock geometry, I don't know how much that extra .008" would make a difference... I would definately check clearance with a set of solid lifters before I ran it. I have a feeling it would be just fine though, my duration specs aren't anywhere near the J2, and that is what would cause a conflict. Ill check my cam specs when I get home though.
#37
My cam would have a lift of .467" with 1.7's... that is about .008" more than the J2 with stock ratio.... J2 clears with stock geometry, I don't know how much that extra .008" would make a difference... I would definately check clearance with a set of solid lifters before I ran it. I have a feeling it would be just fine though, my duration specs aren't anywhere near the J2, and that is what would cause a conflict. Ill check my cam specs when I get home though.
#38
Remember this is a prototype and changes will be made to correct clearance problems. Mike at Harland sent Steve the info for the push rods. They will mock up the rockers and check it out. If it doesn't fit I will send it back and they will modify the rocker again and send it back to check again.
#40
#43
#45
Horsepower is hard to gauge even with the specs of the engine but I would guess that you are pushing slightly more than stock power levels.
As far as the propane and water/methanol debate goes, both have their pros and cons. There are some cases where propane does lower egts but w/m is usually better at that. You can usually get more power from propane though. I like the variable controlled propane kits. They add more propane as boost rises.
As far as the propane and water/methanol debate goes, both have their pros and cons. There are some cases where propane does lower egts but w/m is usually better at that. You can usually get more power from propane though. I like the variable controlled propane kits. They add more propane as boost rises.