out_riding

I have a built 3.0 with a Rebello prepared block and crank running a turbo oil pump and Rebello's oil bypass modification. The oil pressure is fine at idle, but at speed, it runs right around 100 psi. Does anyone know of a lighter spring for the oil pump or an easy way to adjust the pressure? I have a mechanical autometer gauge, so I am sure this is the pressure. My engine seems to find leaks where there would normally be none. Any real world experience would be sincerely appreciated

I have recently purchased and am assembling a 3 litre NA stroker bottom end which I purchase the components from Rebello. This includes ~138mm Eagle rods, an offset ground stroker crank, and custom JE pistons built to match my closed chamber head. I am mating this to a race prepped Gerolamy head which has 37cc combustion chambers. This yields 10.75 to 1 CR and that is about the most I have been able to run on pump gas. The whole lower end package including the machine work was around 2200 dollars. I don't consider this excessive for a race prepped lower end. The bore and stroke combination 81x88.5 yield almost exactly 3 litres and I expect with the Elgins cam and the 44 mikunis with 39mm venturis to yield around 300 crank hp at around 7200 rpm. The previous 2.8 with cast nissan pistons and l28 rods put down ~230hp to the wheels on a loaded mustang dyno. The additional rod length with the added stroke still provides a rod/stroke ratio of around 1.72, which is important for these 2 valve NA motors. While this is a lot to spend for some people, I consider it better to buy good parts than to cheap out and only have the motor last a few events. If anyone wants more info, pm me and I will be glad to provide pictures and specs.

Try Gron Parry 408-781-3770. He rebuilds, and does tuning for all the vintage guys. I don't think anyone knows webers better.