(15-10-2015, 04:57 PM)Jonny81191 Wrote: Obviously, they're made larger than the stock rods because of the material. Absolutely nothing to do with the fact that they're designed to hold 400BHP
Don't know about the BHP but stock rods will bend in the first run and break the second, if you harden them they will have some benefit but are then still half the strength of the billets...
This doesn't have to be power itself that does it but can also be compression, if you put 5bar in it strange things happen.
Also injection timing and duration has a big influence, since we put more fuel in that can burn in a "normal" power stroke we have to inject sooner so it's all burned before TDC, with the 235cc we start injecting at 37 degree before TDC and with the fast one we started at 50 before TDC but then the pistons cracked in half (not billets) and the bearings where flattened so we ended up with 45 before TDC and a bit longer duration.
This is our second machine, more fuel, bigger turbo (HX50), more flow:
https://picasaweb.google.com/lh/photo/JK...directlink
