Aidan's SCCA Stock Class Autocross Build (Road Course is Too Scary) - Page 81 - Miata Turbo Forum -Boost cars, acquire cats.

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Old 06-20-2015, 02:50 PM   #1601
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<p>I am the king of ghetto fabulous.</p><p><br /></p><p>My $30 dollar exhaust is still kicking ***.</p>
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Old 06-20-2015, 02:54 PM   #1602
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Kickin' *** and taking names. Apparently.

No seriously, about the only thing I see failing in that setup is the rubber hanger. Maybe time for a poly one or a hose clamp?
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Old 06-20-2015, 02:56 PM   #1603
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<p>It is a poly hangar, I'll probably add a hose clamp too just to be safe. I should go check out the baxters auto part store thats like 2 minutes away now.</p>
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Old 06-20-2015, 02:58 PM   #1604
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<p>&nbsp;</p><p><span>Jeffbucc how do I get rid of the black exhaust on the bumper? Without a steam cleaner. </span></p>
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Old 06-20-2015, 03:08 PM   #1605
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<p>Its looking like my next track day will be a track night July 3rd. This gives me some time to figure a couple things out. And make sure the car is good for thunderhill. Current to-do list.<br /><br /><br /><br />1. Pull manifold, relief cuts, and surface.<br /><br />2. Brakes. Start with pulling the pads. If they are tapered buy cobalt pads. If they aren't try bleeding the system. If that doesn't work replace master. I should add some sort of ducting. I just don't think I'm going that fast compared to other miatas.<br /><br />3. Ducting. Need to seal my bottom ducting and build side ducting. Otherwise I'm happy with my cooling so far. I think I'm done with this. I added a vent, and the last track day I wasn't breaking 185 when running hard. If I find extra time I will add side ducting though.<br /><br />4. Rebuild rear axles, find spare ABS 2 piece axle. And lots of axle nuts. No luck so far. And still not quite sure how to rebuild the axles. I've seen some mentions of it but nothing concrete. If I do figure it out I will write some how-to for dummies, because I wish I had one.<br /><br />5. Make GoPro not suck. Still not sure on this one.<br /><br />6. Install new front coilover sleeves and get an alignment with 949 half and half alignment. Ugh, too much stuff not enough time.<br /><br />7. Install adjustable endlinks up front. Easy, I'm just lazy</p><p>8. Support Muffler Ghetto but good.<br /><br />9. Drive the **** out of it.&nbsp;always do.</p><p>10. Get vent windows. Thunderhill in July is going to suck.</p>
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Old 06-20-2015, 03:12 PM   #1606
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<p>Would it be a good idea to figure out how to bring some large amount of Oregon gas when we go to thunderhill? Is california gas really that bad? I have a 5 gallon tank, but if I could find more that would be good.</p><p>&nbsp;</p>
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Old 06-20-2015, 03:15 PM   #1607
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Yes you want oregon premium, you'll need about 5 gallons per session, maybe a little less
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Old 06-20-2015, 03:17 PM   #1608
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<p>**** thats like 70 gallons. Not sure how I'm going to make that work.</p><p><span>codrus don't you mix stuff to get higher? Can I add ethanol boost or something?</span></p>
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Old 06-20-2015, 03:20 PM   #1609
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<p>Talking to jmann about his thunderhill trip, and one reason they melted a piston was that they were playing with the combustion chamber size and stuff. They went back to stock.</p>
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Old 06-20-2015, 03:54 PM   #1610
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Quote:
Originally Posted by aidandj View Post
<p>**** thats like 70 gallons. Not sure how I'm going to make that work.</p><p><span>codrus don't you mix stuff to get higher? Can I add ethanol boost or something?</span></p>
If you mix different grades of gas, you basically just average the octane according to the ratio. Thunderhill sells 100 octane, typically for $9/gallon. So if you put 4 gallons of 100 in with 8 gallons of 91, you get 12 gallons of (100*4+91*8)/12 or 94 octane. 6 of each gives you 95.5. IMHO that's cheap insurance when running at the track.

The octane boost in a can stuff is useless.

How many days at Thunderhill are you doing? 70 gallons is like three track days! Or are you budgeting to use it for the trip to/from as well? IMHO you're better off turning the boost down and just running regular pump gas for freeway trip.

--Ian
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Old 06-20-2015, 03:59 PM   #1611
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The last time Gesso and I were at THill with his turbo NA we found that the fuel nozzles on the race gas pumps would not work with the stock filler neck. I believe he had to borrow a fuel bottle from someone to fill up. I'm not sure if its still set up that way, but just a heads up.
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Old 06-20-2015, 04:11 PM   #1612
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<p>Its 2 days. 7 sessions per day. So maybe bring a 5 gallon can. And get 5 gallons from the gas station in willows. then 5 of the 100 octane?</p>
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Old 06-20-2015, 04:31 PM   #1613
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<p>See, I do have a turbo.</p><p><br /><br /></p>
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Old 06-20-2015, 04:34 PM   #1614
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<p>Also, not sure if you can tell from this picture but the diff is slightly moist, not enough to drip on the floor but its coming from somewhere. Wonder if I fucked up the seal.</p><p></p>
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Old 06-20-2015, 04:41 PM   #1615
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In my experience if you screwed it up it'll leave a vertical ring of terribleness all over the underside of the car on that side. At least, that is what mine did.

How many miles since seal install?
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Old 06-20-2015, 04:45 PM   #1616
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<p>Not axle seal. Diff to carrier seal.</p>
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Old 06-20-2015, 04:53 PM   #1617
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You mean silicon, or is there an actual seal I didn't buy?
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Old 06-20-2015, 04:58 PM   #1618
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<p>I used permatex black.</p>
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Old 06-20-2015, 04:59 PM   #1619
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It's just two mating surfaces, right? I don't even see any kind of gasket in the diagram.
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Old 06-20-2015, 04:59 PM   #1620
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<p>Yes, that.</p>
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