Piazza_man project

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Nismo
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Post by Nismo »

Piazza_man wrote: Sun Jun 06, 2021 7:26 pm Cheers Tomas, more stuff coming soon. Just haven’t finished it yet. :yawinkle:
Think it's time for a update here mate, don't you think? ;)
ISUZU PIAZZA TURBO -89 | HANDLING BY LOTUS
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Post by Piazza_man »

😆 I’m waiting to get my car back from my dyno tuner maybe next week, then I’ll post up some pics.
Meanwhile here’s a small teaser for now of one of things I was working on. 🤫
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Hmmm candy apple
Hmmm candy apple
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Post by Nismo »

Wooow look at that engine bay!! :cyclops: :cyclopsani: :cyclops:
Looking forward to it!
ISUZU PIAZZA TURBO -89 | HANDLING BY LOTUS
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Post by Piazza_man »

Time for another update, but this time dyno-tuning time.
98RON & 12psi boost:
127.5rwkw @ 5798rpm (about 170kw @ engine)
243.3rwNM @ 4688rpm

I guess I was expecting a little bit more, but in reality the power figure is about right for where I live which is 600meters above sea level, and correlates to Ely’s figure of 136rwkw @ 13psi with his forged engine a few years ago. In his case, and now in my case, the standard intercooler reached it’s peak cooling efficiency, so there was no real point trying to add more boost. In other words, the standard intercooler has to go if I want to make more power. Good news is there’s still plenty of room left in the Supra injectors, which were sitting at about 62% duty cycle, and I have plenty left in boost capability from the GT2860RS turbo.

The power curve (red line) flattened out once the standard intercooler efficiency started peaking out:
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Now I’m on the hunt for a larger intercooler. Bring it on! :supz:
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Post by Piazza_man »

I designed a custom bracket for the new IGN -1A smart ignition coil from diyautotune.com that was installed before the dyno run. The coil packs 103mJ per spark and a maximum current of 19A (81,000 volts).

The bracket is laser cut 4mm mild steel, then powder coated.
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Post by Nismo »

Damn those are nice numbers still! :) Well there's plenty of room for a bigger intercooler in the engine bay so I guess you won't have any problem finding one! Keep it up!
ISUZU PIAZZA TURBO -89 | HANDLING BY LOTUS
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Post by Piazza_man »

Another custom touch that I finished several weeks ago. Been slowly chipping away at the engine bay, and this time I designed another laser-cut stainless steel plaque. I faithfully reproduced the original intercooler sticker in size and font to maintain that original factory look at first glance.
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