Im rebuilding my head and the cost of having my stock ones refurbed and a new Febi one is about the same. Are Febi stock replacement cams decent?
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Febi Cam opinions?
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Originally posted by TheTacoMan View PostIf you building a turbo engine and getting a new why not get a regind from Bimemrheads ? Almost the same price too.
I've sold probably 20 or so in the last couple years. Had 2-ish that were verified too far out of spec. So the odds that you'll be fine are heavily in your favor (shoot there have been a couple oem cams outside the tolerance range).
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Originally posted by SkiFree View PostHow is this an opinion on the Febi cam? (no offence to bimmerheads, but that's not what the op is asking).
I've sold probably 20 or so in the last couple years. Had 2-ish that were verified too far out of spec. So the odds that you'll be fine are heavily in your favor (shoot there have been a couple oem cams outside the tolerance range).
what particular specs are you referring to?89 E30 325is Lachs Silber - currently M20B31, M20B33 in the works, stroked to the hilt...
new build thread http://www.r3vlimited.com/board/showthread.php?t=317505
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Thanks for all the input! I am not adverse to an aftermarket cam, I just don't want to run the risk of piston / valve contact. I have a resurfaced (not shaved) head with oringed block and goetze head gasket. I have heard of some (rare) cases of even a 272 cam pushing a valve into a piston. Thoughts?
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Resurfacing a head is done by removing material. So is 'shaving', although i guess you
might get less stubble with a shave.
But no matter, if you're concerned, just use some modelling clay on the piston domes,
then pre- assemble, roll it over and measure how thin the modelling clay got squished.
If it's less than .080 or so, then it might be worth getting a little nervous.
tnow, sometimes I just mess with people. It's more entertaining that way. george graves
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Originally posted by TobyB View PostResurfacing a head is done by removing material. So is 'shaving', although i guess you
might get less stubble with a shave.
But no matter, if you're concerned, just use some modelling clay on the piston domes,
then pre- assemble, roll it over and measure how thin the modelling clay got squished.
If it's less than .080 or so, then it might be worth getting a little nervous.
t1988 E30 335i - 1987 E30 327i - 1987 E30 327iS Pickup - 1973 2002 Project
Visit www.BimmerHeads.com for all of your 12 valve needs!
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Originally posted by ser1992 View PostCan I do the clay spacing test on another bottom end, since the bottom end I will be using is still being used in my car?
There is a method for testing clearance with the head on where you remove the valve spring and drop the valve onto the piston at TDC, but I imagine it's harder to measure accurately.The Great Big M20 Timing Belt DIY
Some good information I've found online (no affiliation):
Turbo Tech (Garrett)
Four-cycle information and cam properties for beginners (ISKY Racing Cams)
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