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Old 12-06-2011, 11:10 PM   #1
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Default VVT oiling seals question

Im doing some work on a buddies track car that has 150k, these seals on the VVT ***** are hard as a rock. What function do they perform and what is the downside of not replacing them?
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Old 12-06-2011, 11:54 PM   #2
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I think if they were really shot you might get slow or poor range of VVT actuation and/or possibly a slight loss of oil pressure. Not sure if I've read about those failing before. Then again, they're only $2.59 each. Mazda calls that "*****" an "adapter" BTW. If you unbolt it from the head and lift it off there will be another pair of o-rings on the opposite end, so buy two of each size if you're planning to replace them.

BP6D-10-673 are the small ones
ZL09-10-674 are the larger ones

I have an 01 motor on a stand and I have to believe those o-rings are still good on mine because the valve cover takes some good effort to lift off. They look to be in good condition and I hadn't planned on replacing them before using that head. But this motor has less than 35K miles on it.
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Old 12-07-2011, 12:28 AM   #3
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I thought it might affect performance, ok Ill order them.
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Old 12-07-2011, 01:09 AM   #4
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Honestly, that's an awesome pic with the star off the bolt head and the purty little rainbow to the right On topic - I'll remember to check the o-rings when I get my VVT
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Old 12-07-2011, 01:21 AM   #5
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Not my pic, stole it off google.
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Old 12-07-2011, 01:53 AM   #6
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I believe that in addition to supplying the VVT actuator, one of the passages in the [ahem] "adapter" sends oil to a squirter for the #1 intake cam lobes. At least that's what it looks like from the bottom/inside of the valve cover.
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Old 12-07-2011, 02:25 AM   #7
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I actually didnt even look up in the valve cover last night. Your saying it has another set of the same part number up in the slot for the "adapter".
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Old 12-07-2011, 11:54 AM   #8
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On the other end of the adapter itself. You have to unbolt it and pull it from the head to get to the other two o-rings.
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Old 12-07-2011, 12:30 PM   #9
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Thanks Scott, do you have a manual on cd?
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Old 12-07-2011, 12:42 PM   #10
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I don't think I have a manual for 01+, but I do have a Mazda Motorsports account that's great for parts diagrams.
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Old 12-07-2011, 01:15 PM   #11
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Oh **** your good at that site? Uh yea I have an account too, but I cheat and go to finsihline performance and get part numbers than cross search lol. I was bitching about it earlier in the week after the big order for all the timing gear, seals, and belts. I thought maybe you bought one of those cheap parts cd's. Thanks for the help again.
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Old 12-07-2011, 02:21 PM   #12
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Yeah I just bought a couple hundred bucks in gaskets & seals from Mazda Motorsports for building up the 94 block with 01 head, and I used Finish Line to look up part numbers for some of the weird **** like the VVT intake cam oil seal. To my surprise, Finish Line is actually $20 cheaper than Mazda Motorsports on a water pump kit. Finish Line is also conveniently located about 15 minutes from my house.
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Old 12-07-2011, 04:58 PM   #13
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Rock auto had the better deal on the gates belt with idler pullies. I think I saved $100 bucks on that alone. You have to be careful with mazdamotorsports, they have awesome prices normally 10% cheaper than finishline, they throw a few crazy prices at some items to make a buck.
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