After looking at pictures of Does10's recip catastrophe when a rod broke in one of their engine combo's, and the carnage that ensued, I am starting to become concerned that I may be asking too much of my combination, and cannot afford to have it fail on me. So before I even start trying to lean on this combo,...I want to see if there may be a better idea and pay now instead of paying much more later.
I have stock, bushed, prepped (beams polished/resized/good bolts) rods presently. They are the ones that came in the engine The beam has a 1978 build code. (Guess that makes them cast)
The engine is turbocharged, and could service whatever RPM I'd want it to, but it is a street driver, and right now, have no giant power aspirations although I've been told to expect it (350-400 hp/ 450-550 ft lb tq)
I also know that a rod tends to fail more because of excessive expansive loads (RPM) rather than excessive compressive loads, (boost),...and I just want to be safe.
My question is,.....what RPM would/should I consider "excessive"?
Right now,...I'm not planning anything more than 5500 RPM,..but really don't have any idea where this thing will want to go, and where it'll make power.
The limiting factor is that there are custom forged pistons already in this engine, with a pin height set to accommodate the stock rod length. I'd imagine that that also will force me to look at a set of custom rods if I cannot find an off the shelf solution that is close enough.
I have stock, bushed, prepped (beams polished/resized/good bolts) rods presently. They are the ones that came in the engine The beam has a 1978 build code. (Guess that makes them cast)
The engine is turbocharged, and could service whatever RPM I'd want it to, but it is a street driver, and right now, have no giant power aspirations although I've been told to expect it (350-400 hp/ 450-550 ft lb tq)
I also know that a rod tends to fail more because of excessive expansive loads (RPM) rather than excessive compressive loads, (boost),...and I just want to be safe.
My question is,.....what RPM would/should I consider "excessive"?
Right now,...I'm not planning anything more than 5500 RPM,..but really don't have any idea where this thing will want to go, and where it'll make power.
The limiting factor is that there are custom forged pistons already in this engine, with a pin height set to accommodate the stock rod length. I'd imagine that that also will force me to look at a set of custom rods if I cannot find an off the shelf solution that is close enough.