More rods questions

[rx1turbo]

I'm setting up my rx-1 for 500 foot snow drags. Mcexpress rear mount pistons and head shim I'm running straight c-12 and I want to know if I can run 18 pounds without killing blowing a rod through the block at about 2300 feet

 

[rxrider]

Do you have 10:1 pistons and a head shim and how many gaskets? If I'm not mistaken your CR is well below 9:1, you can run 18 lbs on that fuel, no problems with breaking rods at 18 on that level of compression.

 

[rx1turbo]

I have gasket on either side of head shim bt some people has said that I will break stock rods at 18 pounds boost

 

[Ted Jannetty]

I'm setting up my rx-1 for 500 foot snow drags. Mcexpress rear mount pistons and head shim I'm running straight c-12 and I want to know if I can run 18 pounds without killing blowing a rod through the block at about 2300 feet

If you running Race fuel only there is no reason to lower compression.
Your double lowering compression with pistons and a Head shim, this is going to kill power and response.
You need the compression to launch the sled.
Especially in 500 feet.

I run 22-25 psi boost on a completely stock motor that has 4000 trail miles.
I must have 500 + 660 ft passes on the sled with no issues.
I would suggest more octane though for your sled since you don't have MSD.

Ted.