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1984 S, engine rebuild

posted Jul 9, 2011, 12:51 AM by Michael Harrington   [ updated Jul 9, 2011, 12:55 AM ]

I had to have my accelerator pump replaced. I gained 12HP with it operating properly; up to 137 WHP with the timing set normally. So, looks like your rebuild is performing better than the typical job (according to Racing Beat 137 WHP is on the high end of expected WHP for a 12A with street port). The compression still seems low as measured by the Carrboro mechanic I use (I'd still like to get a Mazda expert to do a compression measurement with gear made for a rotary); but I can't complain about the performance.

--Bob Medred

Note: Stock HP from a 12A is 101 at the flywheel. I built Bob a street ported 12A with many internal upgrades, and sent his Holley carb off to Racing Beat to be retuned for a ported engine... the result, 137 wheel HP = ~ 183 flywheel, almost doubling power.

1983 GSL, general maintenance

posted Jul 9, 2011, 12:49 AM by Michael Harrington   [ updated Jul 9, 2011, 12:55 AM ]

Mike is extremely knowledgeable about the RX-7, even my first generation 1983 model. I was most impressed by his commitment to clear communication during the work. He goes the extra mile to make sure there are no surprises, and that the customer is happy - and I am happy with the outcome, both technically and financially.

--Hank J.

1988 Convertible, engine rebuild

posted Jul 9, 2011, 12:47 AM by Michael Harrington   [ updated Jul 9, 2011, 12:48 AM ]

Last year the engine in my 1988 convertible RX-7 completely seized up on me. Upon the recommendation of another convertible owner, I decided to get Mike Harrington to rebuild the engine. I removed the engine myself and delivered it to Mike. He made various suggestions regarding things to do or not do on the rebuild, and we figured out exactly what I wanted done. Throughout the process Mike worked with me, keeping me informed of what was going on with the engine, and allowing me to bring down additional parts while he was still working on the engine.

After Mike finished re-building it, I picked up the engine, and re-installed it myself. Mike was extremely helpful throughout the process, responding to technical e-mails very quickly and informatively. After I got the engine running, there was an exhaust leak problem in the engine bay. Mike drove up to my house in VA to help me fix the problem, which he fixed on the first attempt.

The engine is now running great, and is not even exhibiting the normal reluctance to start of new rebuilds, or even a lumpy idle; it sits perfectly at ~700rpm, with only about 100 miles on it. I would recommend Mike to anyone who needs affordable, high quality work done on their RX-7, he really knows these cars inside and out.

-- Colin Ward

1991 Turbo, leaking oil filter pedestal

posted Jul 9, 2011, 12:45 AM by Michael Harrington   [ updated Jul 9, 2011, 12:47 AM ]

Mike Harrington came through for me (again!!) and had an extra pedestal laying around, and is sending it to me. Mike has gotten me out of more pinches than I can remember! So quite publicly, I'll say, THANKS MIKE!!

--Collin Webster

1988 Convertible, power and idle issues

posted Jul 9, 2011, 12:36 AM by Michael Harrington   [ updated Jul 9, 2011, 12:45 AM ]

My 1988 RX7 convertible had been slowly losing power over a period of time measured in months and every fix suggested on a variety of forums, by individuals or the official repair manual were to no avail. I had also been in contact with Mike about this issue and after finally sidelining the car due to the power issues and subsequent overheating symptoms, he suggested to me that he would actually have to look at the vehicle to make a diagnosis. Long distance descriptions of symptoms and remedies were not proving conducive to bringing the car back to any kind of previous performance levels.

Please understand that this car is well loved, lives in a garage and is not driven in VA winter, the state where I presently reside. Mike actually came up to Virginia on other business he and I had to conduct and brought along his trailer ("just in case"). As he road tested and looked at the car, he made an immediate determination that the 6-ports were not operative. This diagnosis was couched in cautionary language as this problem could lead to more issues once he got into it. It was also determined that the car had to go back with him to NC, a solution I had hoped to avoid. 

Literally three days later, he had a diagnosis of everything involved and it was fixed several days later. In a nutshell, the 6 ports had to be replaced as they had never worked right contributing to total loss of the plugged (newer) catalytic converter. The plugged converter was the cause of the loss of power and the overheating condition. Also diagnosed was a muffler leak which I later repaired with a new RB catback system, a leaking oil pump and incorrectly installed/wrong sized drive belts that needed to be replaced. The oxygen sensor also suffered total failure. 

In a nutshell, Mike knows these cars, is versed in diagnosing the symptoms to find a solution and his fees are fair, equitable and just. As I later told an inspection station here in VA that wanted to repair the muffler leaks, there are only two individuals who I let near my car. One of them is Mike Harrington. I'm the other for matters I can diagnose with the factory manual, or instructions I can follow based on Mike's long distance interpretation of problems I cite for him. I recommend him without reservation.

--Ralf Wilms

Note: Ralf's car's main problems were non-present 6 port shaft seals and a melted Bonez cat.

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