Quote:
Originally Posted by deansbimmer
The S85 doesn't see the same kind of loading on the front bearing because the v10 has a longer crankshaft with a whole extra main journal for support. It's much more stable than the V8's shorter crank with one fewer supportive journals. It has little to do with a simplex vs duplex chain design or the strain the valvetrain places on the forward journal (all OHV engines have some degree of this strain applied to the front journal).
I can't fault a shop for their hunger to capture business, but a $3800 main bearing job will be rife with longevity concerns. I wouldn't touch that with a ten foot pole as an educated customer. As a shop owner, I wouldn't touch it from a liability standpoint either. I bill $2899 for a full service S65 rod bearing job. To add the further tasks for mains strikes me as insanity for anything less than double that. (assuming, academically speaking, in-car work).
Attempting mains in car, especially on a higher mileage is not a recipe for success. The cleanliness alone for such precision tasks is not conducive to such an environment.
Parts are not the main expense. The labor time and skill are the main cost. If a shop charges only $40 per hour then the low cost job explains a lot, but that leads to questions of the shop's establishment and qualifications.
Regarding parts costs and entertaining the notion of a down and dirty an in-car main bearing service, with rod bearing and rod bolt upgrades, seals, gaskets, cam timing consumables, engine mounts, etc., there should be roughly 30 part lines totaling roughly $3100 in parts alone (list [...]
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Makes sense thank you for that input.