would you use this rotor?
#1
would you use this rotor?
So I got a rotor shipped to me without any damage!!! My only issue is that I measured the apex seal to rotor clearance and it seems excessive. I've never rebuilt a rotary engine before, but I checked the specs and it seems some websites are saying .004. I don't know how deep they are talking about, or just the tip of the feeler gauge.
Here is my pic with a .006" on far left, .007" middle, and .008" far right
There are no visual flaws other than the gap measuring a little excessive
Here is my pic with a .006" on far left, .007" middle, and .008" far right
There are no visual flaws other than the gap measuring a little excessive
#4
Racing Rotary Since 1983
iTrader: (6)
the clearance is too much. in the old days you might consider milling the groove for 3 mm seals but they are heavy and it is extremely easy to screw up the milling process.
Goopy provides the proper solution. buy a set of their 2 mm .004 oversize seals, find a proper file and you will be able to custom fit them to a proper clearance.
bonus: they are really good in the knock resistance department.
Howard
Goopy provides the proper solution. buy a set of their 2 mm .004 oversize seals, find a proper file and you will be able to custom fit them to a proper clearance.
bonus: they are really good in the knock resistance department.
Howard
#5
I am actually using a used one from a low mileage engine, less than 10k. Does it made a big difference? Another reason I posted is because I have a few rotors, and I compared the measurements, and this one has the biggest gap.
Awesome! Well, here is another newbie question. The other rotor I have right now has a maximum clearance of .006". isn't there a Minimum clearance specification?
Another issue was all those debates on apex seals, I was hoping to just use oem mazda, but I guess having tighter clearances would be better huh?
the clearance is too much. in the old days you might consider milling the groove for 3 mm seals but they are heavy and it is extremely easy to screw up the milling process.
Goopy provides the proper solution. buy a set of their 2 mm .004 oversize seals, find a proper file and you will be able to custom fit them to a proper clearance.
bonus: they are really good in the knock resistance department.
Howard
Goopy provides the proper solution. buy a set of their 2 mm .004 oversize seals, find a proper file and you will be able to custom fit them to a proper clearance.
bonus: they are really good in the knock resistance department.
Howard
Another issue was all those debates on apex seals, I was hoping to just use oem mazda, but I guess having tighter clearances would be better huh?
#6
Racing Rotary Since 1983
iTrader: (6)
i like .0015 to .003, better being closer to .0015. regardless of whose seals you use you should not build your motor w sloppy clearances. Goopy just makes it easier for you and they offer an excellent product that i use in all my engines.
good luck,
Howard
good luck,
Howard
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Mazdas spec is 0.002-0.004" so yes, 0.002" is the minimum. with a maximum of 0.0059"
with new parts you'd be in the 0.002-0.004" range, and 0.0059" is for used parts.
so your 0.006" rotor is bad, so you can either buy a new part, or do the oversize seal.
i agree with Howard, milling 2mm rotors for 3mm seals is a job that is full of downsides and pitfall.
the slightly oversize seal and filing the slot is a much better idea, as the seal to groove clearance is important, but also the sides of the groove need to be flat as well, as its a sealing surface
with new parts you'd be in the 0.002-0.004" range, and 0.0059" is for used parts.
so your 0.006" rotor is bad, so you can either buy a new part, or do the oversize seal.
i agree with Howard, milling 2mm rotors for 3mm seals is a job that is full of downsides and pitfall.
the slightly oversize seal and filing the slot is a much better idea, as the seal to groove clearance is important, but also the sides of the groove need to be flat as well, as its a sealing surface
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