Quote:
Originally Posted by killboy
There is a spring-based PRV inside the front cover. By adding a couple of washers under the spring, you can increase the pressure it requires before opening, so you can run thicker oil/higher pressure without blowing it out the PRV.
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while you've got the front cover off I'd say to remove the oil gallery passage blanking plate and give the sharp corners of the main gallery a tickle with the dremel as it has to do a right angle turn to get out of the oil pump