What exactly does Mazda do when they reman a motor?
I have a reman motor from mazda that would put in right before the previous owner took ownership of the car, yet stupid things on the engine are still going wrong. TPS, coil pack, motor mounts...
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A reman usually means that most of the wear sensitve parts are changed out for new ones and the other main components are on a case by case basis. But the reman is the core only and doesnt include the items you listed.
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Originally Posted by Mindspin311
yet stupid things on the engine are still going wrong. TPS, coil pack, motor mounts...
-Andrew |
This is what you get from Mazda:
Flywheel Front cover Main pulley Oil Pump Water Pump Thermostat Oil Pan |
Here's an old post to the FC3S_ORG mailing list that covers the Mazda rebuild proces:
From: Marcus B. Fitzhugh Sent: February 22, 2004 2:14 AM To: fc3s_org@yahoogroups.com Subject: [fc3s_org] Re: Mazda rebuilt engines? I asked to interview a manager and spend a few hours at the Irvine California R&D center for an article on factory remanufactured engines. I was told Mazda no longer rebuilds engines in Irvine. Delco Remy has the remanufacturing contract and they do all the work. All of the following miscellaneous ramblings about Mazda remanufactured engines were correct as of October 2003. When you buy a Mazda remanufactured engine no parts from an original engine are specifically assembled to build another engine. When a core comes in, all parts are spec'd, cleaned, and shelved. No special engines (such as TII rotor housings on an NA, or Renesis rotors in an S5 block) are available. Shelved parts are picked at random for reuse during assembly of a remanufactured block. Out of spec side housings are shipped to Japan to be lapped and re-nitrided. Mazda only uses 1 lapped side housing in any remanufactured rotary engine. Some engine builders boast that they lap all the side housings, but do they re-nitride them as well? Hmmm. . . . . An engine with a lapped side housing is scribed, and it is noted on the build sheet. Customers never see build sheets as they are kept by Mazda. The build sheet has a list of all the new parts that were used on the engine, test results and the compression numbers. The build sheet matches the serial number on the front of the block. Pry that serial number off, and your warrantee is void. Rotor housings? Any rotor housing that is out of spec is tossed. Mazda does not remanufacture rotor housings. Some Mazda remanufactured engines have two used rotor housings and rotors, some may come with both new housings, and used rotors, some with new rotors and new housings, or any combination you can think of. It all depends what is available when the engine is assembled. Side seals on the rotor are custom fit. These are custom seals in varying lengths that Mazda does not sell to the public. Completed engines are run on a test stand and the results are checked by machine. Engine vibration, oil consumption, and a number of other things are noted on the build sheet. The engines are run using a carburetor. The compression checks that are done are not performed with the $1500 tester that dealers used to have. Any remanufactured engine that does not meet spec is disassembled and whatever is wrong is corrected. All engines are shipped with a new/Mazda-rebuilt water pump, oil pump, flywheel, and new exhaust studs are used. OK, that's enough for now. As for the dealer that told you they could supply a Mazda remanufactured engine for $1400, the price hasn't been that low for ages. The counter person was probably speaking off the cuff. The current retail price is closer to $2200 plus a core charge If someone were to run an article on Mazda remanufactured engines, would a large number of you read it? Roundel readers found this type of thing interesting. Marcus 89 GXL - 418,000 miles or so |
makes sense, thanks for the info guys
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