Home › Forum › Ask A Member › 9.9/15 hot spots › Re: 9.9/15 hot spots
March 30, 2015 at 12:01 pm
#13042
Well, there will be some hot spots on most engines. The early 9.9/15s tend to run a little hotter at high speeds because there is no pressure relief system, everything must flow through the thermostat. No evidence of running hot in terms of discoloration on that head, so I would say all is OK. Thanks for taking the time to route all those leads correctly!