Is this rotor usable?

JustJeff · 11-12-2010, 05:18 PM

Thanks for the posts Ted

I had read your article on apex seals several months ago. In a perfect world I'd go with Mazda seals, BUT I'm already on limited finances from all the bad economy stuff. On top of that I'm trying to get money set aside to start graduate school. I figure now is the perfect time to add some education. There isn't any hiring or moving up going on anyway. Might as well do what I can to pad my resume.

I'll certainly give apex seals some more thought. I suppose I could reuse my pressure plate rather than replace it. Use that money to offset cost between RA and Atkins compared to OEM.

My thoughts on housing wear related to apex seals is that I doubt my housings would be good for another rebuild after this one. So I wasn't as concerned about those. Though I am keeping in mind housing wear and compression.

I hadn't considered wear to the apex groove. I'd like these rotors to last beyond this rebuild.

I took some pics of clearancing my apex grooves. I'll post them up pretty soon.

JustJeff · 11-14-2010, 04:56 AM

OK...I don't own a dial caliper so this is what I did to compare one corner from the other. Feeler gauges stuck between the apex seal and the groove. I'm sure it's not as accurate as having a dial caliper. But what I was looking for was a comparison from the good end to the bad of the groove.

My old rotor I took to a machine shop and had them measure it. I don't remember the figures and can't find my notes ATM.

I'll be buying a dial caliper tomorrow. The seller seems to be annoyed that I had not measured. I'm annoyed for the obvious reasons.

Bad Corner

Good Corner

As a comparison the rotor in my engine when it detonated
Bad Corner

Good Corner

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11-12-2010, 05:18 PM	#1
JustJeff RCC Contributor Join Date: Mar 2008 Posts: 505 Rep Power: 18	Thanks for the posts Ted I had read your article on apex seals several months ago. In a perfect world I'd go with Mazda seals, BUT I'm already on limited finances from all the bad economy stuff. On top of that I'm trying to get money set aside to start graduate school. I figure now is the perfect time to add some education. There isn't any hiring or moving up going on anyway. Might as well do what I can to pad my resume. I'll certainly give apex seals some more thought. I suppose I could reuse my pressure plate rather than replace it. Use that money to offset cost between RA and Atkins compared to OEM. My thoughts on housing wear related to apex seals is that I doubt my housings would be good for another rebuild after this one. So I wasn't as concerned about those. Though I am keeping in mind housing wear and compression. I hadn't considered wear to the apex groove. I'd like these rotors to last beyond this rebuild. I took some pics of clearancing my apex grooves. I'll post them up pretty soon.

11-14-2010, 04:56 AM	#2
JustJeff RCC Contributor Join Date: Mar 2008 Posts: 505 Rep Power: 18	OK...I don't own a dial caliper so this is what I did to compare one corner from the other. Feeler gauges stuck between the apex seal and the groove. I'm sure it's not as accurate as having a dial caliper. But what I was looking for was a comparison from the good end to the bad of the groove. My old rotor I took to a machine shop and had them measure it. I don't remember the figures and can't find my notes ATM. I'll be buying a dial caliper tomorrow. The seller seems to be annoyed that I had not measured. I'm annoyed for the obvious reasons. Bad Corner Good Corner As a comparison the rotor in my engine when it detonated Bad Corner Good Corner