Pat's Ebay Turbo Compound Boost Build
#425
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The car is my daily driver, so I'm not doing anything that isn't reliable. The SC wasn't up to my reliability standards, that's 1/2 the reason it came off.
#426
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To have fun, and go fast RELIABLY, on a small budget. I spent 2,000 to build a 500whp turbo setup. Probably the best HP/dollar turbo setup ever at this power level. The turbo setup is not maxed out either, so it should be reliable at this power level since I'm not pushing it to choke flow or very high pressure ratios.
The car is my daily driver, so I'm not doing anything that isn't reliable. The SC wasn't up to my reliability standards, that's 1/2 the reason it came off.
The car is my daily driver, so I'm not doing anything that isn't reliable. The SC wasn't up to my reliability standards, that's 1/2 the reason it came off.
Either way pretty cool and it will be interesting to see the actual reliability how the rear dif/trans/motor overall holds up.
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This. It's fun, I like building things and trying new things. I've learned a ton though all the crap I've done wrong to get to this point. But this setup I built it, have 270 miles on it now, and it's worked almost 100% flawless from the beginning. The biggest problem I've had was two small oil leak, one is already fixed (tighted the hose) the other I have the parts ordered to fix (less than 10 dollars). No boost leaks, no design failures, no major problems, pretty much everything is working the way I expected it to.
#429
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(One could argue that this is actually a more true depiction of what you'll see for spool in average street driving, but it's not going to be consistent with a real dyno, so it looks odd).
But yes, I want to see Pat's car on a dynojet.
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--Ian
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Keep in mind I'm more so just picking your brain on why you went with that setup vs say a s362. Borgs are dead reliable and can be had for like $5-600 new and a s362 will easily handle 650+ on most platforms. Should you ever want more power or quicker power ect you'd have a wide range of drop in turbos s362-s366 and a giant selection of billet wheels race covers ect. It would also most likely spool much quicker then what we are seeing so far.
Either way pretty cool and it will be interesting to see the actual reliability how the rear dif/trans/motor overall holds up.
Either way pretty cool and it will be interesting to see the actual reliability how the rear dif/trans/motor overall holds up.
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One of the issues with virtual dyno is that it doesn't depict spool the way a real dyno does unless you run the car in 5th, and at that point you're well into take-me-to-jail-do-not-pass-go-do-not-collect-200-dollars territory by redline.
(One could argue that this is actually a more true depiction of what you'll see for spool in average street driving, but it's not going to be consistent with a real dyno, so it looks odd).
But yes, I want to see Pat's car on a dynojet.![](https://www.miataturbo.net/images/smilies/smile.gif)
--Ian
(One could argue that this is actually a more true depiction of what you'll see for spool in average street driving, but it's not going to be consistent with a real dyno, so it looks odd).
But yes, I want to see Pat's car on a dynojet.
![](https://www.miataturbo.net/images/smilies/smile.gif)
--Ian
#432
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lol that's evo boost territory
and Pat I think people are really curious of lowend because so far I don't think you posted even one plot shoing 2k-5k
they're all sky high rpm and showing peak numbers
I'm usually curious when a car passes the 200wtq mark, that usually tells me how the lowend is regardless of topend
200wtq before 3k is considered pretty decent
and Pat I think people are really curious of lowend because so far I don't think you posted even one plot shoing 2k-5k
they're all sky high rpm and showing peak numbers
I'm usually curious when a car passes the 200wtq mark, that usually tells me how the lowend is regardless of topend
200wtq before 3k is considered pretty decent
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lol that's evo boost territory
and Pat I think people are really curious of lowend because so far I don't think you posted even one plot shoing 2k-5k
they're all sky high rpm and showing peak numbers
I'm usually curious when a car passes the 200wtq mark, that usually tells me how the lowend is regardless of topend
200wtq before 3k is considered pretty decent
and Pat I think people are really curious of lowend because so far I don't think you posted even one plot shoing 2k-5k
they're all sky high rpm and showing peak numbers
I'm usually curious when a car passes the 200wtq mark, that usually tells me how the lowend is regardless of topend
200wtq before 3k is considered pretty decent
Post 351 I posted this, started at 2,600 not 2K but close:
![](https://www.miataturbo.net/attachments/build-threads-57/163197-pats-ebay-turbo-compound-boost-build-vd%25205th%2520gear_zpsfxnwxxxy.jpg?dateline=1456180031)
Post 392 I posted this:
![](https://www.miataturbo.net/attachments/build-threads-57/163198-pats-ebay-turbo-compound-boost-build-5th_zpsup7re6kq.jpg?dateline=1456180031)
But I got new plugs in it now, and gapped them down, so I'll do a 2K 5th pull when the roads are dry. It was breaking up at 39 PSI last time I did it:
![](https://www.miataturbo.net/attachments/build-threads-57/163199-pats-ebay-turbo-compound-boost-build-booosstt2_zpswegu6cqb.png?dateline=1456180031)
#440
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You can see this in the log I posted above, the "water injection" is actually controlling another injector.