Join Date: Apr 2016
Location: Concord, MA
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07 650i 5000 mi advice on where to send valve bodies
My 650 was blowing by the rings so bad that it was spaying oil mist out the dipstick and routinely spraying into the airbox. The compression (cold... i know) was approx. 40 psi on both. Pressure tests (at 65 psi) in each cylinder at TDC showed no audible leaks on the front int and exh, only hissing out thru the dipstick. The rear cylinder at TDC had air hissing out the carb and dipstick.
I've got the top end apart (don't have enough money right now to throw at a true rebuild) but will lightly hone and new stock rings. I would like to send the valve bodies to a shop to have them inspected, new guides, seals etc.
Any help appreciated!
2007 BF 650i; Bigger jets, EPI springs, HMF muffler, K&N Air, CDI, engine brake override, reverse 4WD override, EPS just added. 26's just added.