Sorry for the redundancy. I posted the following as a reply to an earlier post today, but felt I needed to do a 2nd post as a new topic.
I replaced the WP on my E0 SVT over the holiday weekend using the GMB AutoZone pump.
Looks like I caught it just in time too at just over 30K. The stock unit w/ black impeller had just started to scrape against the back of the pump housing and a hairline crack was starting to form on the impeller.
My car has always run cool usually between the letters N and O and never over the half way mark during extended idling in hot (90F+) summer traffic.
With the new pump, new Ford thermostat and new Ford temp gauge sender, the needle on the gauge sits just below N and sometimes just barely in the normal range scale.
Obviously the new metal pump does work, but are the lower temps caused by the pump? Can anybody concur these findings on their cars? Yes, I am using the same 50/50 concentration as before using Ford premium coolant along with a bottle of Red Line Water Wetter. BTW, I was already running Water Wetter before the pump change.
IIRC, the stock black had only 6 blades on the impeller and the GMB unit has 7 or 8.
