My car has almost 50K on it and I can hear alittle ticking when it's cold. Sounds like piston slap to me. I am looking at rebuilding my motor before it breaks and I install a single turbo. I was looking at Diamond's boost pistons which use a 6.125" rod. I was looking at a few rods ranging from 280 to 1200 for a set. From cheapest to expensive: Eagle SIR $280, Eagle ESP $500, Lunati Pro Mod $670, Oliver Billet $1200. I might possibly ask for boost of up to 15psi. So which would be best suited without busting my budget.

 

I bought a set of Oliver Billet's and they are truely a piece of art!!!!!! If you have the extra cash and want the best I would go with these and be happy!!!!!! <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

 

Are you using stock rpm limits? If so do you need to change the rods? Or is it a case of sourcing rods to suit the piston compression height?

 

Eagle makes a set of 6.125" rods with upgraded rod bolts that have a tensil strength around 225K that cost around $ 400.00. Good deal for a freshen up. I haven't heard of two many people killing the stock bottom ends as it is!

I just got a set of Carrillo H-beams with the Multiphase Carr SPS bolts (285 psi) for $ 550.00 used. They are take outs from NASCAR test engines. They are just about indestructable!

If you are going to boost the motor I would definately change the rod bolts. If you are getting new pistons, go with a 6.125" rod if you can. The longer rod length will help reduce loads on the cylinder walls