Factory bolts go to 125 ft. lbs. If I remember right, the only ones that get less than that are the ones that help hold the rocker pedestals on. Thats the point of overtorqued head bolts, they are torqued more than the factory spec. And my upgraded bolts are at about 130 ft. lbs.

https://www.dieselbombers.com/mighty...ead-bolts.html

I am running a 35/40 hybrid right now, meaning it is an HX35 that has a 60mm 6blade HX40 wheel on the compressor size. Good flow upgrade, but I still just run 30-35 psi as I'm sure drive pressures are out the roof even at 35psi. As quick as I can, I'm going to throw either an S472 or S475 on in a compound setup. Drive pressure (especially coupled with timing) kills HG's but a good compound setup can hold about a 1:1 boost to drive pressure ratio nearly all the way through the boost range.

 

By driving pressure you mean back pressure? How much driving pressure does the factory turbo have, are their compressor and turbine upgrades for the factory turbo, or is it better to just buy a bigger turbo?

 

12v, sweet as can be. Awesome

 

Ok guys, I'm looking for a new injection pump. I have a p7100. Local shop said 3k to rebuild. I have seen 215hp pumps for 1300 on ebay, any ideas.