1.6L 2560r record attempt - Page 24 - 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 03-02-2013, 11:25 PM   #461
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What I need to do is record a pull in a gear say, 3rd from 2000rpm to red line at 90% and full throttle back to back. To test if the TB is a restriction yet.

Maybe just a data log and compare the time from 3000rpm to 7000rpm.


Dann
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Old 03-03-2013, 01:03 PM   #462
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Hey Dan. Could you clean out your PM box? I've been trying to message you for weeks
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Old 03-03-2013, 01:18 PM   #463
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Im not sure what size the 1.6 throttle is, but I bet a 62mm Honda TB would work really well at this power level. Dont think Id go any bigger.

Last edited by Full_Tilt_Boogie; 03-03-2013 at 05:05 PM.
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Old 03-03-2013, 04:28 PM   #464
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Good work Dan. That's a nice of amount of power from 1.6 measly liters of fury.

Quote:
Originally Posted by Braineack View Post
2560 IM before after:



same boost.


From FM during development:




a 1.6L with an IM:

Brain, which manifolds were used for those comparisons?
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Old 03-03-2013, 04:36 PM   #465
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the first two were the same BEGI IM.

the 1.6L was a custom made one using a 70mm TB.
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Old 03-03-2013, 06:46 PM   #466
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Quote:
Originally Posted by slmhofy View Post
Hey Dan. Could you clean out your PM box? I've been trying to message you for weeks
Done.

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Old 03-03-2013, 09:23 PM   #467
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this is sick, subbing
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Old 03-05-2013, 02:27 AM   #468
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Well, here they are, will ceramic coat the manifold and wrap the whole thing in fibreglass and see how it changes the spool up.






You can see my attachments I took a few photos and uploaded them a few times, I couldnt get a clearer one up but you can still read it all.


Let the arguments commence. And the backpedaling, that too.


Dann

NOTE, the AFRs were cleaned up a little before it left the shop, however its not a straight line, it made the most torque with most of the swings you see there.
Attached Thumbnails
1.6L 2560r record attempt-20130305_171839.jpg   1.6L 2560r record attempt-20130305_171851.jpg   1.6L 2560r record attempt-20130305_172829.jpg   1.6L 2560r record attempt-20130305_172841.jpg   1.6L 2560r record attempt-20130305_173626.jpg  

1.6L 2560r record attempt-20130305_173634.jpg  

Last edited by nitrodann; 03-05-2013 at 03:02 AM.
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Old 03-05-2013, 03:08 AM   #469
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So by "cleaning up" the AFRs, you mean "go pig rich to 10:1 and lose lots of power"

mkay...
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Old 03-05-2013, 03:09 AM   #470
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Nope not at all. Look at the damned sheet, it made max power at 11.8:1 AFR, it was already a safe tune.

Not even close.

Good try though.

The tidying up fixed the slight dip at the very top where it goes rich for a second and subsequently lost 4 or 5 odd hp.

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Old 03-05-2013, 03:22 AM   #471
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Edit:
Nevermind

So yeah, a tubular manifold spools slower and makes more power with shitty AFRs than a log manifold with even shittier AFRs.
Some real groundbreaking **** here.

Last edited by Full_Tilt_Boogie; 03-05-2013 at 03:43 AM.
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Old 03-05-2013, 03:27 AM   #472
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All blue lines are the original dyno on the log manifold and 2.5 exhaust.

Dann
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Old 03-05-2013, 03:51 AM   #473
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Quote:
Originally Posted by nitrodann View Post
Nope not at all. Look at the damned sheet, it made max power at 11.8:1 AFR, it was already a safe tune.
Dann

So it goes from 10afr at 4k rpm to 12.5afr at 5k rpm down to 10afr at 6.5k rpm and then back up to 12.5 by 6.75k rpm, sup with that?
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Old 03-05-2013, 05:33 AM   #474
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No idea. I don t really know enough about it.

The bit at the end you talk about where it goes up and down a little is the bit we fixed up.

We did a couple more runs afterwards but no luck breaking 325, got a few 322 and 324hp runs.

I'm just following the trace adding and removing fuel and following what the dyno tells me and the operators experience when he thinks I'm making a mistake.

It was hard to get it on boost at the bottom and that odd fuel curve reflects it.

Heres some SR20 love to help bump the thread



Dann
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1.6L 2560r record attempt-20130304_171026.jpg  

Last edited by nitrodann; 03-05-2013 at 06:36 AM.
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Old 03-05-2013, 09:25 AM   #475
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You understand we I can only take your dynos with half a grain of salt right?

Last edited by Braineack; 03-05-2013 at 09:41 AM.
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Old 03-05-2013, 09:32 AM   #476
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why is that dyno showing 500 ftlbs of torque?
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Old 03-05-2013, 09:43 AM   #477
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Quote:
Originally Posted by Ryan_G View Post
why is that dyno showing 500 ftlbs of torque?
That is what I am trying to figure out also.
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Old 03-05-2013, 09:43 AM   #478
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Quote:
Originally Posted by Ryan_G View Post
why is that dyno showing 500 ftlbs of torque?
because apparently ftlb in AUS isn't standardized. But I'm just going to assume they are NM or KW or whatever. But that still doesnt added up since 498Nm in Ftlb = 367.26. The dyno shows peak at ~5100, if you go by the HP figures it's showing, then peak ftlb would only be around 312, not 367... dun dun dun.

the dyno is also showing 427% correction.




Attached Thumbnails
1.6L 2560r record attempt-1.8l2560v16l2560.jpg  

Last edited by Braineack; 03-05-2013 at 10:05 AM.
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Old 03-05-2013, 10:13 AM   #479
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And if its really ftlb and hp they should cross at 5252rpm. I have the feeling someone imputed the wrong crap on the dyno.
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Old 03-05-2013, 10:43 AM   #480
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notice the ft-lb per MAP. He's hitting 80 ft-lb per MAP in some places, compared to Paul and Soviet's setups (both averaging 65 ft-lb per MAP, which is typical on these motors).

Basically Nitro is blowing them out of the water in terms of how much power he's making per liter of displacement. And far supassing the "magic number."




one hell of an efficient 1.6L you got there!
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