I tried to get a set of thease two weeks ago and all 3 of the dealers said that the part number i gave them was incorrect nice to see they released them i love all the choices we have.

 

Thanks for the info guys

 

 

Here are some updated pics of the new HD2 piston. Mrboost05, the part numbers are good but they are still technically prelease and not available.

 

Are the gas ports vertical?

 

Forgot to ask for the production stuff. These I ordered without gas ports, Jeff's methanol pistons are vertical.

 

The shelf stock HD2 parts will have 8 lateral gas ports.

 

Good to know.I might try these on my drag car.These are shelf pistons correct?The ones i currently have arent and its a pain to get replacements if i needed to.

 

I have a question about these pistons. I see they aren't making 10:1 comp any more. Well not on the shelf. But they do have 10.5:1. Is that a big jump for comp ratio's? I am build a 2.0 and I will be running e85 most of the time. But in case I am not around a e85 pump I will witch over to 93. (We only have one e85 pump here where I live) Just wondering if I should go with 10.5:1 or 9:1. Or just go with a different brand all together that has 10:1 on the shelf?

 

I prefer to run 9:1 motors myself anyway, but if you want a 10:1 motor that technically would be a custom piston. Since they spec the pistons out with a 0.042 gasket (stock) and most of us run a 0.051, there is a drop in compression anyway. 10:1 motors are limited to 20-21psi for the most part anyway from what I have seen...safely on 92.

 

9:1 on e85? Wouldn't I be better with 10.5:1 on e85? I am bearly going to be running 93. And from what I hear it's all about the tuner.

 

10.5:1 doesnt seem to add as much as the potential headache. If we can run 8.30 at 170+ running a 9:1 motor I am pretty sure it will work We are switching to methanol and higher compression this year but thats another story.

 

can anyone give me the part number for a wesico hd piston for a 2.3 motor in 85.5mm just so happens the 10.5.1 pistons i orderd were for a stock crank not sure how they messed that up and i dont wanna order the wrong stuff again i will take a compression of 9.1 -10.5.1 i wanted to try higher compression but i will not be picky thanks guys.

 

MrBoost- according to the new part numbers the pistons you are looking for are K667M855 for a 9.5:1CR or if you plan to be on e85 the 10.5:1CR Pistons are K668M855

 

thanks for the help never try to look up part numbers from your phone