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Topgunz - air to air upgrade

Originally Posted by wideglideleon I have one. I got from TopgunZ. Thanks, I'll talk to Aaron

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Old 10-05-2018, 02:24 PM   #2506 (permalink)
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Originally Posted by wideglideleon View Post
I have one. I got from TopgunZ.
Thanks, I'll talk to Aaron
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Old 10-05-2018, 03:42 PM   #2507 (permalink)
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I have his old one, actually his whole system he had on his Z. I'm not using the brace make me an offer!
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Old 10-05-2018, 05:16 PM   #2508 (permalink)
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Originally Posted by wideglideleon View Post
I have his old one, actually his whole system he had on his Z. I'm not using the brace make me an offer!
I sent you aPM
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Old 10-05-2018, 07:58 PM   #2509 (permalink)
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Default Belt slippage?

What the heck is wrong here? 928 impeller, 9lb pulley, 2.85 sc pulley, 3.47 jackshaft pulley. 91 octane. Does it look like belt slippage or ?
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Old 10-05-2018, 08:00 PM   #2510 (permalink)
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Wow. Scary. I hope mine isnt that low when i dyno it

You have any supporting mods or kits to eliminate the slippage or its just as u say it is?
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Old 10-05-2018, 08:08 PM   #2511 (permalink)
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Wow. Scary. I hope mine isnt that low when i dyno it

You have any supporting mods or kits to eliminate the slippage or its just as u say it is?
High traction pulleys. The problem is the way the power drops off so early.
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Old 10-05-2018, 09:28 PM   #2512 (permalink)
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So you were making almost 600whp but then that changed? Wierd. When did it change? Was it sudden or slowly get worse?
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Old 10-05-2018, 09:54 PM   #2513 (permalink)
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So you were making almost 600whp but then that changed? Wierd. When did it change? Was it sudden or slowly get worse?
This is a new 91 tune. I was making 586 on e85 and 471 on 91 @13psi with just the 9 lb pulley, the 2.85 pulley and the Si wheel.

This set up is the 928 wheel, 2.85 sc pulley and 3.47 jackshaft pulley @ 14.4 psi. And I only gained 1.5 or so psi by adding the 928 wheel and the 3.47 jackshaft pulley.

More boost, loss of power. The way the power and torque drop off just doesn't look right.
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Last edited by redondoaveb; 10-05-2018 at 10:30 PM. Reason: Additional information
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Old 10-06-2018, 01:10 PM   #2514 (permalink)
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I think I might have an idea what my issue is. The V3 is rated at 52,000 rpm. With my current pulley set up, my sc is spinning at 66,000 rpm. I'm running the turbo guard screen and have an unresticted intake so I know it's not a restricted intake issue. It appears that it might be that the volumetric efficiency is dropping off (air cfm in vs air cfm out).

I'm going to call vortech on Monday and see if they can confirm my suspicions.

I want to give a big thanks to another forum member "Z"en for explaining the basics of volumetric efficiency to me.
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Old 10-06-2018, 10:36 PM   #2515 (permalink)
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I have his old one, actually his whole system he had on his Z. I'm not using the brace make me an offer!
So you ended up with my Stillen SC'r and the JR Trans sc'r brace ... I was the original owner ... Glad to see it's still going strong !!!
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Old 10-12-2018, 03:15 PM   #2516 (permalink)
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after install a2a and 9 lb pulley. the car start then turn off right away. i check everything is fine. fuel pressure 50-60.
do you guys know what it could be?
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Old 10-12-2018, 03:43 PM   #2517 (permalink)
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Check your wiring , mine did that and I had MAF and Throttle cables switched, easy to do at the end of a long day.
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Old 10-12-2018, 04:40 PM   #2518 (permalink)
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Super Vortech upgrade, 3.47 jackshaft pulley sc side, 3.00 sc pulley, Tial wastegate and Greddy Profec results on e85.
Only issue I'm having is that Seb had to do about 50 dyno pulls due some other issues and he said that my sc oil is black. Any ideas? Normal break in after rebuild? Supercharger going out, crappy rebuild? I'm going to change the oil and monitor it to see if it continues or if the sc starts making noise.
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Old 10-12-2018, 05:48 PM   #2519 (permalink)
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Originally Posted by redondoaveb View Post
Super Vortech upgrade, 3.47 jackshaft pulley sc side, 3.00 sc pulley, Tial wastegate and Greddy Profec results on e85.
Only issue I'm having is that Seb had to do about 50 dyno pulls due some other issues and he said that my sc oil is black. Any ideas? Normal break in after rebuild? Supercharger going out, crappy rebuild? I'm going to change the oil and monitor it to see if it continues or if the sc starts making noise.
Hey you did it, congrats! So switching from 2.85 sc to 3.0 fixed it?
Speaking of noises, anyone have a heavy load sound coming from front of car/blower when reversing? Especially cold. Didnt have that sound before blower rebuilt/no slip kit installed
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Old 10-12-2018, 06:32 PM   #2520 (permalink)
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Originally Posted by redondoaveb View Post
Super Vortech upgrade, 3.47 jackshaft pulley sc side, 3.00 sc pulley, Tial wastegate and Greddy Profec results on e85.
Only issue I'm having is that Seb had to do about 50 dyno pulls due some other issues and he said that my sc oil is black. Any ideas? Normal break in after rebuild? Supercharger going out, crappy rebuild? I'm going to change the oil and monitor it to see if it continues or if the sc starts making noise.
Beautiful!!
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