Its fine, the OD can range from .002 to .007 without any difference in pumping performance. They do get loud if the OD clearence gets too big, but it doesn't hurt anything. The gear basically sets its own clearance when under torque. It will crush that clearance down to bearing load size and seal the high pressure side.
Keeping within fords tolerances is all i ask for and i didnt get that so hopefully this thread helps someone before they install their gears. Dont be like me and assume something .
That's a solid number range
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can you mic your crank snout please?
Do you have something to compare it too. Just curious since it is -21 here in my shop right now . When i checked clearances of my OPGS they had just came from the delivery truck and i have since checked them again at room temp and there was .0015 difference.
Yeah worth comparing for sure. The TSS and the Ford gear are both .008 i just didnt include the pic of the TSS gear as i didnt think anyone else cared. It wont be Zero for another weeks lol but i will measure it and post it here in a bit.
I don't know, my car isn't apart. What's the ID of the TSS gear?
Well since i dont have a snap gauge i cant be truly accurate using a vernier caliper . I did spend some time with it came with .001 or what my feeler gauge reading was. But you said you wanted to see what the consistency of the crank is so you need to compare mine to another production crank. With that said the gear needs to float to some extent since it is driving the larger outer gear which is fixed in the housing. The pump housing is bolted to the block and the large gear is confined to the housing ,the center gear is the drive gear and needs some wiggle room. The TSS gears have some sort of coating on the the internal surfaces that looks much different than what ford and MMR have on them.
a scratch test on the load faces might be interesting.
Yeah thats not happening, 600 cad for opg's they fucking well better be good. Glad im not paying someone else to do the job im already out 450 cad. plus labour
Only waiting for my crank gear from FPP. I am completely satisfied with TSS thus far and the the finish is of good quality compared to what MMR sent me You really have to hold them in your hand to see how much better the TSS gears are. See the image of MMR. I have decided to not hardness test since i dont want anyone blaming that for any kind of failure.
