Hard metal on metal rattle past 3000 rpm
note .there is no check engine light on https://youtu.be/A93tlAKpCMw |
I'd say read the following and let us know how many you violated first, if this was indeed a fresh reman.
Mazda's Guidelines The Mazda RX-8 Owners Manual lists the following information for the break-in period of a new vehicle: "No special break-in is necessary, but a few precautions in the first 1000 KM (600 miles) may add to the performance, economy, and life of your Mazda. Don’t race the engine. Don’t maintain one constant speed for long. Don’t drive constantly at full-throttle or high engine RPM for extended periods of time. Avoid unnecessary hard stops. Avoid full-throttle starts." A review of the Mazda RX-8 Service Manual Highlights revealed the following information regarding break-in: "A fluorocarbon resin coating has been added to the trochoid surface (rotor housing) for improved initial break-in." Racing Beat's Guidelines The Mazda guidelines are reasonable and prudent. If you have any questions or uncertainly regarding the break-in period, we suggest you follow these official recommendations. We receive many requests for our recommended break-in procedures. The following are Racing Beat's recommendations: For the first 1000 miles do not accelerate under full throttle. During the first 1000 miles do not exceed 4000 RPM. For miles 1000-2000, expand the RPM upwards - but do not accelerate at full throttle. Over 2000 miles, full throttle and high RPM is acceptable. |
It would only be the last one other than me driving the car 800 miles i was very easy on it until i was over 1000 ...making sure to give it a break in period
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So would you say you maintained one constant speed for long over those 800 miles? ;)
That aside, that sounds like something to do with the rebuild rather than poor break-in. Poor break-in might shorten the engine's life, but I'd be surprised if it failed catastrophically with metal on metal sounds. Can you tell if the sound is coming from the engine or from the transmission/clutch area? Can you tell us anything about the noise? Does it accelerate with rpm or with vehicle speed or neither? Does it happen both in gear and in neutral? Clutch in and clutch out? Does the engine still start and stop like it's supposed to? Is there metal or oil on the spark plugs? It could be a clutch bearing, or it could be an engine bearing or a shattered seal. |
Originally Posted by Loki
(Post 4865270)
So would you say you maintained one constant speed for long over those 800 miles? ;)
That aside, that sounds like something to do with the rebuild rather than poor break-in. Poor break-in might shorten the engine's life, but I'd be surprised if it failed catastrophically with metal on metal sounds. Can you tell if the sound is coming from the engine or from the transmission/clutch area? Can you tell us anything about the noise? Does it accelerate with rpm or with vehicle speed or neither? Does it happen both in gear and in neutral? Clutch in and clutch out? Does the engine still start and stop like it's supposed to? Is there metal or oil on the spark plugs? It could be a clutch bearing, or it could be an engine bearing or a shattered seal. |
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