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mattias skrev: ↑mån dec 13, 2021 2:15 pm You should consider upgrading the pump to Walbros later turbine pump (GST450) instead, that will get you the flow you need to have some margin.

Distributor axle is gear driven by the intermediate shaft which is belt driven from the crank. There is usually not a huge issue on the Volvo but an improvement would be the standard flywheel 60-2 trigger.

I would advice you to get boost control working, it makes a huge difference. It's better to run the engine where it wants to produce torque instead of retarding timing for the wrong reason.

mattias skrev: ↑sön dec 12, 2021 10:21 am Where the N/A engine makes the maximum torque is where it will be most susceptible to knock (4-5 krpm) and let that decide how much boost it can handle at that point and ramp it up from there. That should be maybe 500 Nm on 98 RON, unless you employ methods for charge cooling.