IIT: Rebuilding for reliability - 2011 edition - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 08-23-2011, 05:24 PM   #21
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Turbo shaft has near zero play so I expect it to be good. I will keep the GT2560R for now. Engine will be torn open tomorrow, so I should know more then.

Update on goodies:
- M-Tuned Connecting Rods IN STOCK
- 1999 1.8 block w/intake and all, 55k miles IN STOCK
- JE Pistons 84.0mm 9.0:1 ORDERED
- ARP Head and Main Studs ORDERED
- Maruha Racing Oil Pan Baffle IN STOCK
- Oil filter relocation kit IN STOCK
- EBC Electronic Boost Control Solenoid Kit IN STOCK
- ACL Race bearings ORDERED
- BEGI Intercooler #3 ORDERED
- ATI Damper pulley kit ORDERED
- Miata Intake Manifold Heatshield gasket Hondata ORDERED
- Gates Racing Timing Belt 90-05 Miata ORDERED
- Dual-Row Race Radiator ORDERED
- Boundary Engineering Chromoly Racer Oil Pump Assembly, 1 shim ORDERED
- Injector Dynamics ID1000 Fuel Injectors ORDERED
- Adjustable Cam Gears ORDERED
- DTAfast S60PRO ORDERED
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Old 08-23-2011, 05:44 PM   #22
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Have you downloaded the DTA software? You will be so dissapointed....
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Old 08-23-2011, 06:14 PM   #23
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Quote:
Originally Posted by Spookyfish View Post
Sourcing a 99 head (and block if needed). Will my 94 alternator and starter fit or do I need the 99 version of those?
'94 alt. and starter will fit fine, though a NB starter (6sp?) is much smaller.
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Old 08-24-2011, 01:51 PM   #24
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Quote:
Originally Posted by Tim Irwin View Post
'94 alt. and starter will fit fine, though a NB starter (6sp?) is much smaller.
I have a BP4W starter, but unsure if it's any different from what is on the 94 engine now. It does have way less miles so it's an upgrade anyway.
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Old 08-24-2011, 01:52 PM   #25
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Have you downloaded the DTA software? You will be so dissapointed....
Have you downloaded the latest software?
It is not that bad actually. It may not have some of the nicest features of TunerStudio, but the ECU itself is miles ahead and that is what counts.
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Old 08-24-2011, 02:02 PM   #26
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Spoke to the shop owner about the old engine. He didn't have much detail as he had not spoken to the mechanic himself but one bearing was dead the others appeared fine.

What does this tell us?

Will speak in more detail to the mechanic tomorrow.
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Old 08-24-2011, 02:25 PM   #27
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Je pistons imo are just not up there in built quality compared to cp or arias. Too bad you ordered then already our I would ave tried to talk you out of it.
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Old 08-24-2011, 02:52 PM   #28
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Quote:
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Je pistons imo are just not up there in built quality compared to cp or arias. Too bad you ordered then already our I would ave tried to talk you out of it.
I am not going to defend myself here, but that is a very silly statement IMHO. I had Supertech in my old engine and they were fine. Where is this information coming from other than hearsay? How many 'build quality' related failures on shelf piston have you seen?
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Old 08-24-2011, 02:56 PM   #29
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No thats fine its why I said imo rather than saying its fact. Personally I've seen in person two sets of je pistons that had at least one piston in the set that was not round. Neither set was for a miata though. I know of one engine builder that also refuses to use then and his current ash tray is a JE piston. There are many je motors out there working just fine though so gets hoping you have better luck.


Keep in mind I'm using supertech pistons in my motor without issues. However my next motor will likely be built with mahle or arias.
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Old 08-24-2011, 04:24 PM   #30
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Haha, well your original message said:
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Je pistons = garbage
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Old 08-24-2011, 04:32 PM   #31
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It looks exactly like a 1990-94 Mazda 323 / Protege starter.

Those have enough juice to crank high compression motors easy! Usually what goes bad is the solenoid. If you have racing mounts be sure to apply some locktyte to the solenoid bolts, mine fell off weeks after the poly mounts mod.
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Old 08-24-2011, 04:52 PM   #32
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Lol yeah. I edited it to be a but more specific rather than just sounding like another internet superstar.
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Old 08-24-2011, 04:54 PM   #33
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I ordered a 2000 starter but looked the same as the 94 if I remember correctly but havent had them next to each other.
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Old 08-24-2011, 04:54 PM   #34
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Originally Posted by Spookyfish View Post
Have you downloaded the latest software?
It is not that bad actually. It may not have some of the nicest features of TunerStudio, but the ECU itself is miles ahead and that is what counts.
Any ECU will do as the engine processes are slow compared to industrial processes. MS2 is by far fast enough for demanding stuff. It it how easy you get it tuned properly. And DTA software is not good at that. You could say years behind.. You'll find out.
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Old 08-24-2011, 06:55 PM   #35
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Quote:
Originally Posted by IHI View Post
Any ECU will do as the engine processes are slow compared to industrial processes. MS2 is by far fast enough for demanding stuff. It it how easy you get it tuned properly. And DTA software is not good at that. You could say years behind.. You'll find out.
Well, I had MS1 so I needed to upgrade to a new platform anyway. The price difference between doing MS2 (or your version of it) or a commercial (and well known and well supported) system like DTA is not that huge.

And the tuning is done by human, not in software. I am much more interested in continuous onboard looping data logging, gear or VSS related boost, extensive tests and diagnostics, CAN output, etc.
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Old 08-25-2011, 06:33 AM   #36
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Originally Posted by Spookyfish View Post
Well, I had MS1 so I needed to upgrade to a new platform anyway. The price difference between doing MS2 (or your version of it) or a commercial (and well known and well supported) system like DTA is not that huge.

And the tuning is done by human, not in software. I am much more interested in continuous onboard looping data logging, gear or VSS related boost, extensive tests and diagnostics, CAN output, etc.
I agree, MS1 is too slow indeed. I ditched that ~5 years ago as the MS-extra developement got more advanced for the MS2 than for the MS1. I actually wonder why most PNP units for the Miata still run MS1.

All I know is that most people running DTA ask me to pull it out and install something else as there is no one that seems to getting it right before the engine dies on the dyno. But you have to put that in perspective: A car that performs on the TRACK can be a total nightmare on the ROAD. A well tuned car that is performing nice on the ROAD will do a good job in little dyno time on the TRACK. You could say a ROAD car is more demanding then. I have found most of the dyno-only tuned cars aren't running well at all and if you have a system like DTA it is very hard to get a nice tune for the road. Running an engine WOT is always easy, just open the injectors long enough and put the right amount of timing on it. Your demands are probably minimal so the DTA might work for you after all.

But I am not trying to start a discussion here at all... Just let us know how it worked out for you, we might learn something from it. Keep building, keep posting.

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Old 08-25-2011, 03:04 PM   #37
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Quote:
All I know is that most people running DTA ask me to pull it out and install something else as there is no one that seems to getting it right before the engine dies on the dyno.



therefore:
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Old 08-26-2011, 01:41 PM   #38
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Updated the first post (here: https://www.miataturbo.net/showpost....12&postcount=1)

The 94 engine broke down due to bearing #3 failure. Root cause was determined to be temporary oil starvation. Long left sweeper ending in heavy breaking zone is probably what triggered it.

More enhancements:
- Maruha Racing Oil Pan Baffle IN STOCK
- Ishihara-Johnson Crank Scraper ORDERED
- Boundary Engineering Chromoly Racer Oil Pump Assembly, 1 shim ORDERED
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Old 08-27-2011, 07:25 AM   #39
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Wanted to mention here that Kevin Johnson from Ishihara-Johnson Crank Scrapers (www.crank-scrapers.com) provides excellent customer service!
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Old 08-31-2011, 03:10 PM   #40
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More stuff is coming in:
- M-Tuned Connecting Rods IN STOCK
- ATI Damper pulley kit IN STOCK
- Ishihara-Johnson Teflon Crank Scraper IN STOCK
- IL adjustable cam gears IN STOCK
- Trackspeed Engineering Inconel Stud Kit IN STOCK

Still waiting on some critical parts, such as pistons and BE oil pump.
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