Holset HX35 Install info on om603
Holset HX35 Install info on om603
Ah, well--
Pumps and timing is summit I DO know about! The old 'mechanical Rotary' type Bosch EP-VE pumps have a Hydraulically controlled Timing-Device. This is fully tailorable to low-load advance, advancement with speed, cold-start advance and many other features NOT found in the old M.B. centrifugal chain-driven timing-device.
The VP44 has a similar Timing-Device but the big difference is that its hydraulic components are controlled Electronically, as are the VP29 and VP30 types--so the sky's the limit as to what it can be tailored to do!
I have no idea what the P7100 has, but guess its similar to the M.B. chain-driven centrifugal device, as its a larger but similar style of pump...
So, Whats the issue with Exhaust-Valve Springs and retainers, and how does this relate to back-pressure....??