Turbo installed. Lasted 4 days. Threw a rod.
#161
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Been on the dyno today.
Made more power and torque. Very happy with it now. A MASSIVE thanks to Dan at ardler automotive for checking the whole map over of me again.
Rev limit lowered to 7k
Hopefully it last more than 4 days this time.
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Made more power and torque. Very happy with it now. A MASSIVE thanks to Dan at ardler automotive for checking the whole map over of me again.
Rev limit lowered to 7k
Hopefully it last more than 4 days this time.
![Name: 69106074f59e22f9135d502914ce5c30.jpg
Views: 255
Size: 507.6 KB](https://www.miataturbo.net/attachments/general-miata-chat-9/184704d1501208810-turbo-installed-lasted-4-days-threw-rod-69106074f59e22f9135d502914ce5c30.jpg)
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Views: 272
Size: 498.6 KB](https://www.miataturbo.net/attachments/general-miata-chat-9/184705d1501208810-turbo-installed-lasted-4-days-threw-rod-6c08bf8220a478fa69c0b0d2229d0c96.jpg)
If any of you are on Instagram follow me on there for more pics
Username: connorhorton
#165
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So the car went on the dyno again today, it instantly made better power and needed work to the fuel map (especially in boost) to get it where it needs to be.
The strange torque curve comes from the same flaws in the original turbo setup where it just can't make the boost at the top end. It does however make for a lovely flat power graph at the top (I'd much rather have flat torque to redline but not many people run big enough turbos on stock engines). It's also emphasised by the way that the DynaPack auto-scales it's axis, which makes small changes look rather… large.
All in all - it's back on the road and the iMessage from Connor a short while ago that said "It's sooo much faster", it's amazing what an extra 20bhp can do :-)
Daniel
The strange torque curve comes from the same flaws in the original turbo setup where it just can't make the boost at the top end. It does however make for a lovely flat power graph at the top (I'd much rather have flat torque to redline but not many people run big enough turbos on stock engines). It's also emphasised by the way that the DynaPack auto-scales it's axis, which makes small changes look rather… large.
All in all - it's back on the road and the iMessage from Connor a short while ago that said "It's sooo much faster", it's amazing what an extra 20bhp can do :-)
Daniel
#167
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With that torque curve you should have set the redline at 6000 rpm. He's got no business revving it out any higher than that with that clogged exhaust. All that it will do is make excess heat and cylinder pressure above there, and maybe cost him another engine.
#168
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After seeing that dyno I would be concerned the cause of the original failure still lurks within the new motor. That type of torque fall off means you got one hell of a restriction somewhere. Restrictions like that cause cylinder temps to really skyrocket and lead to detonation.
I would pull the exhaust and dyno with just a downpipe and see if anything changes.
I would pull the exhaust and dyno with just a downpipe and see if anything changes.
#173
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The exhaust really isn't very restrictive at all. The down pipe is the standard Hks on that's been chopped and made to be more free flowing but it does have a pretty sharp angle off the turbo so that must be a restriction I suppose.
Still at 13psi.
Cam timing is not off.
Torque really doesn't feel like it's dropping off that bad
I'm sure dan will answer with a more technical answer
Still at 13psi.
Cam timing is not off.
Torque really doesn't feel like it's dropping off that bad
I'm sure dan will answer with a more technical answer
#178
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I see it now; drops 80rwtq from 4K to 6.8K--I hope his boost at redline is 90kPa. That or I'm still sticking to my original theory: the tune.
I cant see how 150rwhp once it FINALLY spools to redline can feel good...
Typically when one makes 200rwtq, you'd expect at least 230rwhp. What turbo is this?
I cant see how 150rwhp once it FINALLY spools to redline can feel good...
Typically when one makes 200rwtq, you'd expect at least 230rwhp. What turbo is this?
Last edited by Braineack; 09-10-2014 at 10:32 AM.