Mrmonk7663
Member
I have a Non-Hemi Predator 212. I opened it up today. It has never been run. The piston sits .020 in the hole (measured from piston edge to block face, NOT THE DISH)
The stock gasket measures .009-.010
I’m no mathematician but it seems that my stock engine has .030 piston to head clearance.
I want to install a billet rod and a mod 2 cam. I would like to increase my compression as well, but do not know the easiest and best path to take.
Gasket is a no go...factory is the thinnest already.
This leaves me with the rod (arc +.020 or arc +.040), milling of the head, and/or flat top piston.
Milling of the head is an option and desired but can anyone reccomend a good amount...I want to use 93 octane and I’m unsure on how far to mill it to have a good chamber volume and not go farther than 93 octane can handle (octane booster can be used if needed)
That leaves me with flat top piston. This would be same as I have now except no dish so a little more compression.
The DJ-1285PH I believe would be about .040 in the hole, and with a +.020 rod...we are back to .020 in the hole. ARC Racing made a +.040 rod to work with the DJ-1285PH specifically for the non-Hemi...that would put the piston level with the deck but with a .009 head gasket that would be too close right?
Do I have this correct so far?
I did read on here that one of the members used the hemi flat-top piston with the .040 rod and was at .020 in the hole...
I believe based on my readings here and other forums that my best plan of action is the Arc + .040 Rod with the DJ-1285PH piston...install and measure how deep, if any, it sits in the hole, and adjust piston to head clearance with the gasket. Does this sounds like a solid plan?
Sorry for the long winded first post and all the numbers. If I am missing anything or have messed up in my thought process please set me straight. I am including pictures of my measurements. I used a digital and a non digital micrometer. Both read the same .020 in the hole. I don’t understand the best way to achieve what I’m looking for as I don’t know if one way is better than the other.
The stock gasket measures .009-.010
I’m no mathematician but it seems that my stock engine has .030 piston to head clearance.
I want to install a billet rod and a mod 2 cam. I would like to increase my compression as well, but do not know the easiest and best path to take.
Gasket is a no go...factory is the thinnest already.
This leaves me with the rod (arc +.020 or arc +.040), milling of the head, and/or flat top piston.
Milling of the head is an option and desired but can anyone reccomend a good amount...I want to use 93 octane and I’m unsure on how far to mill it to have a good chamber volume and not go farther than 93 octane can handle (octane booster can be used if needed)
That leaves me with flat top piston. This would be same as I have now except no dish so a little more compression.
The DJ-1285PH I believe would be about .040 in the hole, and with a +.020 rod...we are back to .020 in the hole. ARC Racing made a +.040 rod to work with the DJ-1285PH specifically for the non-Hemi...that would put the piston level with the deck but with a .009 head gasket that would be too close right?
Do I have this correct so far?
I did read on here that one of the members used the hemi flat-top piston with the .040 rod and was at .020 in the hole...
I believe based on my readings here and other forums that my best plan of action is the Arc + .040 Rod with the DJ-1285PH piston...install and measure how deep, if any, it sits in the hole, and adjust piston to head clearance with the gasket. Does this sounds like a solid plan?
Sorry for the long winded first post and all the numbers. If I am missing anything or have messed up in my thought process please set me straight. I am including pictures of my measurements. I used a digital and a non digital micrometer. Both read the same .020 in the hole. I don’t understand the best way to achieve what I’m looking for as I don’t know if one way is better than the other.
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