Archive for thermostat

Road Runner Passes Inspection!

 After repair of the leaky thermostat housing yesterday, today was spent topping off fluids, airing up tires, cleaning windows, and checking lights, turn signals, wipers, and horn (beep beep works!). A little idle adjustment and the Bird was on the road to Valvoline Service Center for the annual state vehicle inspection. It passed with no issues!  The real shock was that for some reason the inspection cost went down from the usual $39 to only $7!  This price reduction corresponds to Texas’ first year of combining the registration and inspection stickers of the past into one consolidated unit. It opens up front window real estate and saves the state millions in admin costs. Win win!

To celebrate the victory, we drove up to Roanoke, dining capital of TX, for some T&A (Tacos & Avocados…a restaurant that is). Mucho fun!

Road Runner Thermostat R&R Round Two

In a past post a couple of years ago, the details of the Road Runner thermostat housing R&R was discussed. Upon returning from a leisure cruise around town last fall, a small pinhole leak around the weld bead on the thermostat housing appeared. Finally getting around to repairing it in preparation of the annual state vehicle safety inspection and registration process due this weekend, a Mancini thermostat housing was purchased with the hopes that it was sourced from a different and perhaps higher quality Chinese factory than the last one from Moroso. The 160F thermostat was re-used since it was new last time and a fresh mix of Prestone 50/50 was mix used. Only time will tell if this new part will last but along with some engine touch up paint, the darn thing sure looks good! 


Road Runner Rises!

Leaking Thermostat Housing
Cruised to Jack-in-the-Box for Lunch

Keller, TX – Inspired by the Mustang start up last week, I got up early before the peak of the daily Texas heat and readied the Road Runner for state inspection…it passed!  I drove a few laps around town, had Jason drive it for his first time when he got off work, jumped on it and achieved a nice “chirp” between 1st and 2nd like the good old days, and brought it home to cool down.  Popping the hood revealed the thermostat housing was leaking again – for those of you who follow this blog you know I had this issue when firing up the Runner from a long hiatus a couple of years ago.  I bought a brand new chrome housing and thermostat at that time and wouldn’t you know it leaks again.  More to come on this issue as I tear it down next weekend for repair…

Final Radiator Flush

The starter installation project was stalled last week as I pooped out late Saturday night waiting for the radiator to cool down for final flush. Well, this weekend my energy was back and I was able to complete the task. Going against my long standing belief to avoid additives of any kind to any vehicle system, I took the advice of the local O’Reilly counterman and added Gunk’s Liquid Kool to my fresh refill of Peak Long Life 50/50 Prediluted Antifreeze. He said he used it in his vintage ‘Vette among other project cars and since I need every Fahrenheit of temp reduction that can be found I bought into his sales pitch. I tested this new blend of Gunk and Peak with an extended driveway idle session where the Autometer bounced between 195F and 205F for 30 minutes. While not thrilled with these results they are far better than I was experiencing the last time I drove the car when the Runner stayed on the brink of boil over at 240F during my cruise in the local Lions Club parade. Satisfied for now, I recorded a short video in hopes of letting all of you hear the weee-weee-weee of my new Denso starter in action (as opposed to the waaa-waaa-waaa of the old starter)…enjoy!

R&R Radiator Hose

The day starts with firing up the Mustang and backing it out of the garage to make room to work on the Road Runner. Easier said than done! The new battery and a squirt of ether allowed the little 289 to fire right up but as the car was dropped into reverse and the clutch let out a big surprise awaited us – no brakes! Brian and Tim spend about one hour bleeding the brakes on all four corners as the single reservoir chambered master cylinder had somehow run dry letting lots of Texas air into the brake lines. After trying a few wrenches we determined the bleeder valves somehow ended up with metric fittings. Pumping the brake pedal, bleeding the mixture of air and brake fluid into the brake fluid recovery canister and minutes later we had brakes once again…finally the ‘Stang was out in fresh air!

Peeling back the car cover, pushing the Runner back to give elbow room to turn wrenches, and surveying the engine room to develop a plan of attack…

A slight diversion before proceeding with the thermostat and rad hose replacement – we added a billet power steering pump filler cap picked up on the last R66 trip to SoCal as an upgrade to the stock black unit.

Quick drain of the four year old oil and a refresh with some Quaker 10W30 with Fram P8HA filter. Then, a mock up of the new rad hose to ensure clearance around heater hoses, water temp sensor, distributor, and alternator brackets.

The distributor and drive gear were pulled to allow oil pump priming with electric drill motor and a hex shaft that was long enough to reach through the distributor opening in engine block down to the oil pump drive. After liberal gasket surface cleaning and scraping some blue painter’s tape was used to protect key areas from the Hemi orange engine touch up paint.

Installation of the 160F thermostat, a new chrome t-stat housing, and a new upper radiator hose completes the repair. Connecting the new battery, flipping the switch to the electric fuel pump to fill the twin Holley carburetor bowls, a dash of ether, a couple of pumps of the accelerator pedal, a turn of the ignition key, and bingo! The big 440 came to life spewing billows of exhaust smoke as rich gas fumes and oil slipping past the valve seals struggled to burn off. After 10 minutes the exhaust went clear, the engine idled without help, and we watched as the rad temp climbed to 180F before the thermostat popped open. We let the water circulate through the block for a few minutes to allow the Prestone Super Flush to do its job. The Runner was backed out of the garage to facilitate draining the spent water after a short cooldown period. Fresh water was poured into the radiator to rinse the flush out before a final exchange of fluids with new antifreeze. This last step never happened though as the age old engine starter gave up the ghost. Jumping across the starter relay and straight across the starter terminals revealed the starter was truly dead. Four teenage boys later the Runner was pushed back into its rightful spot in the garage banished to sit there once again until starter repairs could be executed.

A very disappointed Brian sits in the passenger seat watching the water temperature gage to drop below 150F before we put the car away for the day. Next up – the search for a starter…hmm, sounds like an opportunity to check out the latest technology for a possible upgrade!

Road Runner Resurrection Part 1

After an exhaustive search on the ‘Net I found the best overall price for a new thermostat and chrome housing at Summit Racing. Ordered on Sunday night, shipped confirmed on Tuesday, and in my hands by Thursday well before the upcoming weekend Hot Rod work day! I went with a Milidon 160F thermostat and a Proform chrome water neck with gasket and new bolts in the kit…

Road Runner Escapades

OK, so I had a couple of days vacation to “use or lose” this week so I decided it was high time to clean out the garage and attempt to start the Road Runner after several years of no activity with it. I had to get a new battery (the 7 year warranty ran out last year). I planned to change the oil / filter and prime the engine by spinning the oil pump. I was going to take my chances on the old gas in the tank to see if she would light up then try to run it out driving around so I could put fresh gas in later.

I decided to start the whole process by checking fluids. I popped the hood and saw a strange sticky gooey paste leaking around the thermostat housing. I reached over to check it out and “snap” the housing broke in half! This was a chrome job with Robert Shaw thermostat. Pictures attached. Weird deal. Now I have to gather up parts to repair everything. Local ‘zone, O’Reilly, etc do not carry a 160F thermostat or chrome housing so I guess it’s internet time!

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