Had the day off today to do a few little jobs... still have the top end rattle and some say it may be due to a valve in the oil filter housing that bolts to the side of the block so I though I may as well take it off and give it a clean to see if that helps... wasn't convinced that it would be the miracle cure tbh but had to eliminate it as a possibility...
Came off easy enough and on inspection the valve in question didn't look as if it was a
problem... here is my somewhat dirty housing next to one I removed from Bill's retired race engine...
...the oil retention valve...
...and where it sits...
...this valve is supposed to keep oil int the head to prevent rattling on first start... Bill said I could fit his (much cleaner) one to eliminate it as an issue... sadly it didn't appear to make any difference at all... so next job is to remove the head and swap it out with the one I recently acquired...
...this will be built using new followers this time too so fingers crossed its all good...
With that disappointing (but not unexpected) result I moved on to cleaning up the pipework for the MBC/N75 as it was a mess and relocated the N249 valve so I could bin the metal bracket allowing Audi easier access for when they change my coilpacks under the recent recall... the less they have to touch on my car the happier I will be...
Started by extending the wiring for the N249...
...then with a slight modification I routed the wiring to the little plastic box on the bulkhead and fitted the N249 inside...
...top back on and all hidden and out of the way...
...making this top of the engine a neater place once I had finished the pipe work...
...I also moved the DV to the back of the engine bay as I get a funny noise on its operation so was thinking it was maybe due to its location...
Before...
After...
Sadly that didn't make any difference either... noise is still there... so, hoping its related to the running issues as a result of the rattly top end and pressure drop across the FMIC... will get those things sorted first then worry about it after..
On the subject of the FMIC, the core is now at AH Fabs and should be ready for me to fit next Friday... will of course update the thread when done...
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