If it's a known issue - then surely ALL 3.7 Roadsters should have the same problem?
Are there some differences in the build between ones that do and don't?
Are the crated engines all the same version?
Are the ECU's all the same version hardware and software when they leave the factory?
OK I have done some investigation, and I have found this via a USA Ford Mustang thread, 3.5/3.7L—COLD ENGINE STARTUP TICKING NOISE— BUILT ON OR BEFORE 5/1/2011
TSB 12-1-17
The TSB(Technical Service Bulletin) is a Ford raised issue, I have a copy of the rectification article from Ford. It is an issue with the cam follower buckets and oil feed to the cam bearings. I believe most 3.7 Roadsters were built early 2013 onwards, but the engines supplied by Ford I presume would/could have been built earlier. the only way to know is to supply the engine VIN number and ask Ford when it was built. This issue may be the rattling you are referring to.
I also know that the fly by wire throttle pedal went through 3 iterations by Ford, presumably to resolve some issue(s). This came to light when testing the new MBEMECU. My car has the 2nd iteration, and I believe Ford confirmed that no 3.7 Cyclones supplied to MMC had iteration one, I do not know how many were built with iteration 2. This as I have explained previously I was told can cause the limp home mode, due to throttle voltage variance on the ECU.
