big churbo and a boost gauge
06-06-2012, 10:11 AM
#1
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big churbo and a boost gauge
Brand new in box LC-1 with DB gauge. I believe it's blue, but I ordered a while back and will verify. Comes with everything shown, and all that would normally come new in box, as well as both stainless and mild bungs.
Sold
T3/T4 300-400hp eBay turbo. Comes with fittings, bolts and lines shown.
$100 shipped
Sold
T3/T4 300-400hp eBay turbo. Comes with fittings, bolts and lines shown.
$100 shipped
Last edited by gospeed81; 06-07-2012 at 11:31 AM.
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06-06-2012, 11:30 AM
#3
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replied.
Also, boost gauge for sale as well, willl post pics and details in a bit. Looking for $70 shipped, it's basically this, but in blue:
Package deals always available for a light discount.
Also, boost gauge for sale as well, willl post pics and details in a bit. Looking for $70 shipped, it's basically this, but in blue:
Package deals always available for a light discount.
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06-08-2012, 12:19 PM
#10
If someone can definitively state that this churbo won't be a total dog on a stock motor-no forged anything- 220-ish WHP application I may be interested in it for the SAABata. Track car with limited street driving.
I planned on doing another SR20T25 which I feel would do a better job for me on my application, but I could be wrong. Someone speak up on this. Which would be the better choice? I haven't built the mani yet so T25 or T3 is irrelevant to me right now.
I planned on doing another SR20T25 which I feel would do a better job for me on my application, but I could be wrong. Someone speak up on this. Which would be the better choice? I haven't built the mani yet so T25 or T3 is irrelevant to me right now.
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06-08-2012, 12:33 PM
#11
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I honestly think you'd be fighting the surge limit while building boost, might see some boost shortly after 3K rpms, max boost maybe a little before 4K, and be shifting at the point you're finally getting into the meat of the "efficiency island" (~70%).
Ideal? You tell me. To quote Corky Bell:
From what I get from your build I think you'd much prefer something that moves well without revving too much. Something magical about a properly-sized turbo on a 220whp Miata(motor). It's already passed that 18wheeler as soon as you've thought it, it's already 2 blocks down the road of that F250 driver who dumped a cloud of diesel smoke as soon as he saw you pull out.
I apologize that I've recently sold two turbos just outside of your ideal range, but you will be happier staying in that range.
Ideal? You tell me. To quote Corky Bell:
Originally Posted by Corky Bell
3. Selecting the Turbocharger
The size of the turbo selected for a given application will strongly influence the degree of success enjoyed by the system. It is not at all a case of only one size working in a specific situation; rather, there is just one that will work best.
The trade-offs of lag, boost threshold, heat, low-speed torque, and power are the variables in the decision process of matching the turbo to the requirements. To optimize the trade-offs, the requirements must be defined first.
The size of the turbo selected for a given application will strongly influence the degree of success enjoyed by the system. It is not at all a case of only one size working in a specific situation; rather, there is just one that will work best.
The trade-offs of lag, boost threshold, heat, low-speed torque, and power are the variables in the decision process of matching the turbo to the requirements. To optimize the trade-offs, the requirements must be defined first.
From what I get from your build I think you'd much prefer something that moves well without revving too much. Something magical about a properly-sized turbo on a 220whp Miata(motor). It's already passed that 18wheeler as soon as you've thought it, it's already 2 blocks down the road of that F250 driver who dumped a cloud of diesel smoke as soon as he saw you pull out.
I apologize that I've recently sold two turbos just outside of your ideal range, but you will be happier staying in that range.
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06-08-2012, 12:36 PM
#12
If someone can definitively state that this churbo won't be a total dog on a stock motor-no forged anything- 220-ish WHP application I may be interested in it for the SAABata. Track car with limited street driving.
I planned on doing another SR20T25 which I feel would do a better job for me on my application, but I could be wrong. Someone speak up on this. Which would be the better choice? I haven't built the mani yet so T25 or T3 is irrelevant to me right now.
I planned on doing another SR20T25 which I feel would do a better job for me on my application, but I could be wrong. Someone speak up on this. Which would be the better choice? I haven't built the mani yet so T25 or T3 is irrelevant to me right now.
I can only say how it works on my car that sports a stock '96 motor with 220k miles on it. I enjoy daily driving it, towing things and such. I suggest running a 3" exhaust turbo to tip. The vids (link in my sig) are mostly at 12-13psi.
I know I'm the odd minority but I couldn't think of going any smaller. I hated the powerband on the last four tiny turbo cars I've owned.
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So, that really isn't a factor.
