Gt2871 dyno
07-26-2010, 01:53 PM
#43
Wow, lots going on here.
The very simple point to my post was that I believe the OP can have his turbo spool up much quicker that it is in that plot.
As for my mountain shaped TQ curve, well, thats how it is. That is with a gutted 99 intake manifold. The TQ drops pretty quickly, but the HP continues much better than it did witht he IM in stock form. I gained about 1000rpm more or usable hp.
The very simple point to my post was that I believe the OP can have his turbo spool up much quicker that it is in that plot.
As for my mountain shaped TQ curve, well, thats how it is. That is with a gutted 99 intake manifold. The TQ drops pretty quickly, but the HP continues much better than it did witht he IM in stock form. I gained about 1000rpm more or usable hp.
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07-29-2010, 09:14 PM
#44
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theres lots more to be had from that engine, thats for sure, my "laggy" 3076 goes to almost peak tq, at just over 4k, and stays in that area for a long time.
we used engine analyzer pro to help with the design of the inlet manifold, to match the rest of the setup of the engine, and driveability is excellent. It also lacks the "diesel" powerband some engines seem to have, with just a small window where the engine is working properly. smooth gradually increase in power to the point where the cams will let go.
we used engine analyzer pro to help with the design of the inlet manifold, to match the rest of the setup of the engine, and driveability is excellent. It also lacks the "diesel" powerband some engines seem to have, with just a small window where the engine is working properly. smooth gradually increase in power to the point where the cams will let go.
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07-29-2010, 11:25 PM
#46
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theres lots more to be had from that engine, thats for sure, my "laggy" 3076 goes to almost peak tq, at just over 4k, and stays in that area for a long time.
we used engine analyzer pro to help with the design of the inlet manifold, to match the rest of the setup of the engine, and driveability is excellent. It also lacks the "diesel" powerband some engines seem to have, with just a small window where the engine is working properly. smooth gradually increase in power to the point where the cams will let go.
<img src="huge dyno pic I won't waste a page with" />
we used engine analyzer pro to help with the design of the inlet manifold, to match the rest of the setup of the engine, and driveability is excellent. It also lacks the "diesel" powerband some engines seem to have, with just a small window where the engine is working properly. smooth gradually increase in power to the point where the cams will let go.
<img src="huge dyno pic I won't waste a page with" />
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07-30-2010, 08:04 AM
#48
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I just noticed I was looking at the red/blue instead of the yellow/orange. either way, both are good torque curves and I agree with you on that "diesel" nonsense everyone seems to have. Do you have any pictures of your manifold? or if willing to disclose, some of the "design specs" of the manifold
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07-30-2010, 08:51 AM
#49
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with the 2871R 0.86 on my 1.6L there is very minimal lag. the power is high enough all the way from 3500-ign cut that you RIP through the gears.
but i need a 6 speed and rods to go more hp than i have now.
but i need a 6 speed and rods to go more hp than i have now.
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07-30-2010, 03:51 PM
#50
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nickC, check my build thread, lots and lots of pics etc.
https://www.miataturbo.net/build-threads-57/hf-mx5ts-3076-turboed-trackday-street-toy-38472/
https://www.miataturbo.net/build-threads-57/hf-mx5ts-3076-turboed-trackday-street-toy-38472/
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07-31-2010, 06:41 AM
#52
3in flow master chambered muffler. ive told him about it before, but he likes the sound. there are a few other thing i suggested to him, like intake manifold and new rear end gears, but he is talking about selling the car so i dont think he is too concerned with those issues. sucks cus its a damn quick car. it made me want a miata 2 years ago when i met wes and did some street tuning for him. ill be sad to see him sell his car.
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07-31-2010, 09:21 AM
#53
350hp on a Miata Motor is very easy and a simple receipe... Here it is...
720cc or bigger injectors
HIgh Flow Fuel Rail
Forged Rods
Stock 94-97 Pistons
T3/T4 50 Trim Turbo, or GT3071 Turbo
Good External Wastegate
3" Downpipe to 3" Exhaust with 200 Cell Cat.
Standalone Tune by someone who knows what they are doing.
18-20psi of Boost.
Voila.. 350hp!
Thanks, Marc
M-Tuned.com
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07-31-2010, 09:24 AM
#54
Ok this is the **** that bugs me. Just because everyone thinks a part is better doesn't mean that it is better part. What's missing is the quantification. That is the distinction between theory and practice right? And since we're spending our $ on it we should take the time to find out what the specific improvements are (if any).
I will paypal anyone who has a NB mani the $ for a back to back dyno on the hybrid and stock mani, with fueling adjust for the same AFR targets
I will paypal anyone who has a NB mani the $ for a back to back dyno on the hybrid and stock mani, with fueling adjust for the same AFR targets
We have a dyno in house..
Marc
M-Tuned.com
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07-31-2010, 02:50 PM
#56
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I did it over 8 years ago. I also tried a BEGi and Modified Honda and they did make more power at the top.
350hp on a Miata Motor is very easy and a simple receipe... Here it is...
720cc or bigger injectors
HIgh Flow Fuel Rail
Forged Rods
Stock 94-97 Pistons
T3/T4 50 Trim Turbo, or GT3071 Turbo
Good External Wastegate
3" Downpipe to 3" Exhaust with 200 Cell Cat.
Standalone Tune by someone who knows what they are doing.
18-20psi of Boost.
Voila.. 350hp!
Thanks, Marc
M-Tuned.com
350hp on a Miata Motor is very easy and a simple receipe... Here it is...
720cc or bigger injectors
HIgh Flow Fuel Rail
Forged Rods
Stock 94-97 Pistons
T3/T4 50 Trim Turbo, or GT3071 Turbo
Good External Wastegate
3" Downpipe to 3" Exhaust with 200 Cell Cat.
Standalone Tune by someone who knows what they are doing.
18-20psi of Boost.
Voila.. 350hp!
Thanks, Marc
M-Tuned.com
What would your list look like if the goal was at least 400 whp?
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