I am sure people on this site will come up with a better idea about the head work with of their expert knowledge of intake and exhaust flow capabilities because the wrong valves were used! Probably say the pistons are not the right ones to use, the coating is all wrong either too much or too little, wrong engine block because it just isn't strong enough, precups aren't going to work well because of the bowl flow isn't enough, or why aren't the skirts coated, or the wrong turbo is being used, the camshaft won't work, the wrist pins are not going to work, cross hatching isn't enough or it is too much, wrong bearing used, wrong rings used, the extrude-hone work wasn't done right on the intake and exhaust manifolds.
Come on all you expert engine builders let the rest of know what should off been done to your specs and with your money!
1. You need to use the intake valves off a 79 Datsun B210 for the exhaust valves, they allow "extra clearance" to allow the valve to wiggle closed for an optimum seal.
2. The pistons were incorrect for this application because they are not the ones supplied be the "experts" at Damaged Diesel.
3. The best piston coating to use is Rhino Liner because the liner seals against the cylinder walls better when warm.
4. You have the wrong block as well, everybody knows that the best blocks were from the 350 olds engines circa 1983.
5. Your precups would have better flow if you welded a stainless sink strainer to them, the strainers align the fuel molecules to double their effective flow.
6. The best flowing bowls are made by Corelle.
7. Coated skirts are the best. Have you ever seen a chick in a skirt straight from a mud pit?
8. Your turbo blows. A better combination can be had with a proper mating for Kerby, Rainbow and Hoover vacuum cleaner parts. Everybody knows that a turbos that sucks is perfect for your application.
9. Your camshaft won't work because of it's egg shaped lobes. Round lobes have less friction.
10. Wrist pins? Really your using those? If you install a rubber shaft through the rod to retain the piston it allows for high RPM displacement increase. It uses the fuel of a 4 cylinder until you mash the throttle, then the pistons help the valves close faster.
11. Nobody crosshatches anymore. You need compression relief grooves in the cylinder walls with the high compression ratios of these engines.
12. Your bearings are correct! Congratulations, you have done something right.
13 Multi gap rings are the best, they expand in the heat, usually right into the cylinder walls.
14. Extrude honing is old tech, you need to create pressure ridges with hard rolls and a dremel. You also need pressure relief holes so that won't need a wastegate.
As you can see, I'm an expert in bull crap.
