Sintered steel oil pump gears
#26
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I think it has stock cams. I don't know how it happens, but I assume the valve leaves the cam lobe. I was there when the head came off, and saw the slightly bent valve...bent just enough to not seal.
#29
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It depends on what you want done. There are a million different combos of heat treatment, let alone what metal to start with. First I would find what stock is and then figure out what you want.
Atlanta might be better suited for this. Assuming there is no impact loading I can help you. The equations are very simple and easy to follow. This weekend I will grab my books
Atlanta might be better suited for this. Assuming there is no impact loading I can help you. The equations are very simple and easy to follow. This weekend I will grab my books
#37
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http://forum.miata.net/vb/showthread...5&page=1&pp=25
explains the process, fairly involved. I'm sure they're top notch.
explains the process, fairly involved. I'm sure they're top notch.
#38
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I have and did the last time i pulled the motor i was gonna need to wait a week for parts from trussville so i asked him and he gave me that so many weeks stuff. I thought hmm i send this guy 500$ for a oilpump they put good gears in and it will take a month for me to get them? he must have the gears already made so the main issue is the install on the oil pump from what i think. If it takes a week to lap in a set of gears that does not sound like a good deal. ya know.
#39
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That is an expensive process, I bet hes making lil' money on it. Wire EDM is amazing, we used it to make the splines on our Baja vehicle. Labor and time intensive (to set up) im surprised their EDM is open enough for him to make a few sets like hes done.
I bet we could make one cheaper, but probably not better for equal quality i would go with his. Cryo treating would be our only option, any heat treatment would lead to machining and then you are better off with his option.
Im thinking we look at options to improve the stock gears that will not require re machining.
I bet we could make one cheaper, but probably not better for equal quality i would go with his. Cryo treating would be our only option, any heat treatment would lead to machining and then you are better off with his option.
Im thinking we look at options to improve the stock gears that will not require re machining.
#40
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He does not have the gear just sitting on a shelf..... They are made usually on a per order/group buy basis because of the large investment involved. I put mine into an ebay oil pump since I was measuring clearances anyway. I just needed to enlarge the smaller guide hole on the pump body by about 0.002", everything else checked out perfectly. The gears turn in the pump without and binding whatsoever.
As for the time it takes to get them made once the gears themselves are done, it is not entirely up to him. He has someone make the gears and someone install them in the pump. He is just to one that sets everything up. Basically a contractor if you want an analogy.
As for the time it takes to get them made once the gears themselves are done, it is not entirely up to him. He has someone make the gears and someone install them in the pump. He is just to one that sets everything up. Basically a contractor if you want an analogy.