1.6L 2560r record attempt - Page 42 - Miata Turbo Forum - Boost cars, acquire cats.

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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 10-10-2013, 11:54 AM   #821
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Quote:
Originally Posted by Stein View Post
This doesn't make sense to me either. First is sketchy but I can stand on mine in 2nd with 279WHP/308WTQ on the highway with new RS3's and it sticks. Maybe my setup is just that good?
But bro, your torqueless 5L V8 has nothing on his 1.6L of furry

Nothing
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Old 10-11-2013, 11:46 AM   #822
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Dammit, now I know why the car wont stick. Not enough downforce to counteract gravity.

WIN!
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Old 10-16-2013, 05:41 AM   #823
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So it just occired to me that it might ride the bump stops a lot.

Investigating.

Dann
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Old 10-16-2013, 07:17 AM   #824
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So it just occired to me that it might ride the bump stops a lot.

Investigating.

Dann
dannafbody?
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Old 10-16-2013, 07:47 AM   #825
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What?
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Old 10-16-2013, 02:02 PM   #826
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There is an active thread started by wannafbody about this very issue. I drew a parallel assuming you were actively reading current threads. Apparently you were not.
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Old 10-17-2013, 07:41 PM   #827
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Dann clear your inbox!
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Old 10-17-2013, 08:03 PM   #828
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Sorry six, I had a different opinion to brain again, so I was out of here for a week.

Ill go find it now.

Erat it's clear.

Dann
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Old 11-03-2013, 12:54 AM   #829
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Its at the track again today, I was told it ran within a few tenths from the MX5 club lap record at Wakefield earlier.

Just as a data point, the below setup (different car, identical setup) made 170rwkw at 15psi, on a 1.6L, with RX8 injectors, MSPnP2, and a 2" exhaust. The downpipe on that car is the same, 3" for as far as possible, bullet cat and smooth neck down to 2"

Same turbo location on the log and everything.









The actual car. I built everything you can see, stainless coldside reroute, intercooler setup, valve cover mods and catch can etc.




One of the first dyno pulls, with a boost control failure. 14psi here by memory. I didn;t tune this, not my dyno, not even my city.



Dann
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1.6L 2560r record attempt-20131103_143235.jpg   1.6L 2560r record attempt-20131103_143245.jpg   1.6L 2560r record attempt-20131103_143252.jpg   1.6L 2560r record attempt-20131103_143304.jpg   1.6L 2560r record attempt-1185989_196821217161905_736218008_n.jpg  

1.6L 2560r record attempt-img_17131.jpg  
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Old 11-03-2013, 02:54 AM   #830
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No record.

Ftd still.

Dann
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Old 11-03-2013, 06:50 AM   #831
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OK, I'm a little bit confused by your breather setup, for a couple reasons:

First off, did you add that brass fitting with the additional hose over to the breather box, and if so, why? There's already a hose running from the factory barb next to the oil fill cap, so an additional one seems unnecessary, no?

But more puzzling than that is your retention of the PCV, given that the other side of the crankcase it's connected to is effectively vented to atmosphere through the cam cover to breather box line(s). Why not route the PCV hose (either keep the PCV or toss it and make a fitting to fit the PCV grommet) over to the breather box?

As configured you basically have a 3/8" hole on your manifold connected to your breather box. Under boost you're likely bleeding pressure off and pressurizing the crankcase because PCV's are notoriously leaky (lol; maybe that;s why you need a catch can?), and under vacuum you're still pulling filthy oil vapors back into the manifold. It's actually worse than the factory setup.

I see this variations of this all the time, usually the Filler Nipple to intake hose is replaced by a little cone type breather filter instead of a spiffy breather box, but the result is the same. It's more of a problem on stock ECU cars where it basically allows the motor to ingest unmetered air, where a MAF based system doesn't care where the air comes from (just that it's present in the manifold), but you still have the problems of boost and vacuum "leakage" out via the path through the PCV to the atmosphere (breather box), not to mention the downside of still mucking up up the manifold with oil vapors.

Personally, I'd cap off the PCV to Intake hose, and run the PCV over to your breather box, or sticking a little cone filter on the PCV would work too. But as configured it makes no sense to me.

What am I missing?
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Old 11-03-2013, 07:32 AM   #832
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What am I missing?
The pvc side is blocked. There is no flow either direction. if you look very carefully you can see the split, inside that is a glued in solid rod.

So there needs to be more flow out of the crankcase than just the single OEM hotside hose, so I added a second one to that side, it leads to the baffle on the inside.

The hotside never ever pukes oil on anyones car, the coldside does.

Fair?

Dann
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Old 11-03-2013, 10:05 AM   #833
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Originally Posted by nitrodann View Post
The pvc side is blocked. There is no flow either direction. if you look very carefully you can see the split, inside that is a glued in solid rod.

So there needs to be more flow out of the crankcase than just the single OEM hotside hose, so I added a second one to that side, it leads to the baffle on the inside.

The hotside never ever pukes oil on anyones car, the coldside does.

Fair?

Dann
Got it. The old PCV Hose That Isn't Really A Hose trick.. I see the split you're talking about now. I was unaware of the difference in oil-barf propensity from side to side, I'll keep that in mind next time I'm messing with crankcase venting.

Thanks-

Last edited by Pinky; 11-03-2013 at 10:18 AM.
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Old 11-03-2013, 11:45 AM   #834
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171kw = about 150whp right?
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Old 11-03-2013, 11:55 AM   #835
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do i really see a 3" DP going to a 2" exhaust?

like I should ban you perm for that.
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Old 11-03-2013, 12:02 PM   #836
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161 rwkw is around 210rwhp.

Yes its a 3 down to a 2. And 210rwhp. Thats exactly why its an interesting data point


Dann
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Old 11-03-2013, 12:30 PM   #837
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161 rwkw is around 210rwhp.

Yes its a 3 down to a 2. And 210rwhp. Thats exactly why its an interesting data point


Dann

no, it's exactly why is spools just as bad as your other record setting turbo kit.
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Old 11-03-2013, 07:32 PM   #838
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Hmm.

How much power does yours make?

Is yours not also a 1.6L with a t25 on a log?

Dann
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Old 11-03-2013, 08:33 PM   #839
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IIRC he made more power than that, many years ago.

But seriously, why isnt it 3" all the way back?
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Old 11-03-2013, 08:42 PM   #840
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Because everything costs money, and this is something that can upgraded at any time, its not like we pulled the head off and left stock rods in there, when he has further funds he can put a 3" on it whenever he wants.

Are you not surprised it made this power on a 2" press bent catback? It even has the OEM flange for the rear of the cat and the next foot or so is OEM.

Well, I learned something anyway.

What is with this site and getting all catty every time someone doesnt build an MS2, 1.8L with ebay rods, a 2560, and a full 3" exhaust on rx8 injectors. I mean, sure thats an excellent combo, but ****, some people should just untie their panties and take some posts for what they are..

It's a forum wide issue. It genuinely does slow progress and knowledge within the community, what does anyone learn reading about yet another cloned setup..

Dann
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