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300WHP Supernatural 3.XX Coming Soon! by La fiera
Started on | : 01-01-2018 09:47 PM |
Replies | : 534 (17415 views) |
Last post by | : La fiera on 01-15-2024 10:39 AM |
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Dec 11th, 2020
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ragoldsmith Member Posts: 103 From: Idaho, United States Registered: Nov 2020
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| quote | Originally posted by La fiera:
You can steal it from me because I stole it from the Ferrari's F1 cars of the 60's and 70's!  |
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Oh ha ha guess that’s why it looks great!
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09:38 PM
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La fiera Member Posts: 2273 From: Mooresville, NC Registered: Jun 2008
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 Lifters came in and now I can install the rockers!
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09:48 PM
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pmbrunelle Member Posts: 4543 From: Grand-Mère, Québec Registered: Sep 2008
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I just noticed that you still have a dirty cold start injector and radiator fan switches on your intake; you shouldn't need those with MegaSquirt! I haven't figured out what's happening with your water pump, hmmm
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10:50 PM
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La fiera Member Posts: 2273 From: Mooresville, NC Registered: Jun 2008
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Well, the fan switch got replaced by another fan switch to work in tandem with the re designed cooling system. I'll get more details later about that system. everyone will benefit from it.
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11:05 PM
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Dec 13th, 2020
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La fiera Member Posts: 2273 From: Mooresville, NC Registered: Jun 2008
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07:32 PM
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Dec 16th, 2020
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qwikgta Member Posts: 4670 From: Virginia Beach, VA Registered: Jan 2001
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what exhaust are you using? what are those headers for.
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11:22 AM
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La fiera Member Posts: 2273 From: Mooresville, NC Registered: Jun 2008
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| quote | Originally posted by qwikgta:
what exhaust are you using? what are those headers for. |
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 The dual setup on the left replaced the Y pipe on the right. [This message has been edited by La fiera (edited 12-16-2020).]
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02:54 PM
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La fiera Member Posts: 2273 From: Mooresville, NC Registered: Jun 2008
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  This is how it looks installed. [This message has been edited by La fiera (edited 12-16-2020).]
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03:13 PM
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La fiera Member Posts: 2273 From: Mooresville, NC Registered: Jun 2008
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Will Member Posts: 14267 From: Where you least expect me Registered: Jun 2000
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Going to paint your ice chest red and engrave "FIERO" on the sides?
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09:48 PM
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La fiera Member Posts: 2273 From: Mooresville, NC Registered: Jun 2008
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| quote | Originally posted by Will:
Going to paint your ice chest red and engrave "FIERO" on the sides? |
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Heck no!
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10:03 PM
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PFF
System Bot
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Dec 17th, 2020
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Will Member Posts: 14267 From: Where you least expect me Registered: Jun 2000
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03:47 PM
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Dec 18th, 2020
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La fiera Member Posts: 2273 From: Mooresville, NC Registered: Jun 2008
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Dec 25th, 2020
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La fiera Member Posts: 2273 From: Mooresville, NC Registered: Jun 2008
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https://youtu.be/o7PU1S0FPb4Valve train comparison between 3.4 Supernatural vs stock vs 3.7 Supernatural. The 3.4 Supernatural parts where a bit heavier than stock and I was able to achieve good results. Now, the 3.7 Supernatural is a different breed. Much lighter spring, valve and hardware.
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09:59 PM
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Dec 26th, 2020
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Blacktree Member Posts: 20770 From: Central Florida Registered: Dec 2001
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So what's the target RPM limit? 8000+?
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12:32 PM
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La fiera Member Posts: 2273 From: Mooresville, NC Registered: Jun 2008
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| quote | Originally posted by Blacktree:
So what's the target RPM limit? 8000+? |
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I believe I can get there with no problem and even higher, the question now is will the power be at that RPM. With the previous valvetrain I could feel a bit of power loss at 6900-7200RPMs and I knew the problem was the amount of mass the springs had to overcome as the RPMs climbed with the heavy SS oversized valves I was using. The engine had a peculiar sound, like valves floating. And could not get the best out of the camshaft at the higher RPMs. I'm pretty sure I could've gotten another 30whp but the valvetrain was the limiting factor. One of my worries at those RPMs was the stock rods I was using. They were ARP's bolt upgraded but still, my gut was wrenching when I saw the tack hit 7200RPMs. That's why I decided to go lighter and going with beehive springs. The beehive springs I run now are made for endurance (LeMans, Daytona, Sebring, etc). Every LS engine runing the IMSA prototype category uses the same part# and brand I'm using, they were not cheap. 
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07:15 PM
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Dec 27th, 2020
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Blacktree Member Posts: 20770 From: Central Florida Registered: Dec 2001
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OK, I wasn't sure if you were trying to hit a certain RPM goal.
Regardless, it'll reduce parasitic power loss, especially at high RPM. Also, valve float will be moved higher up the RPM range. But of course, you know these things. I'm just saying this for the benefit of other viewers.
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06:48 PM
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Jan 23rd, 2021
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La fiera Member Posts: 2273 From: Mooresville, NC Registered: Jun 2008
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 Some eye candy!! Valve covers modded and powdered coated anodized red. I need some help in finding a throwout bearing spacer. Where can I find that?
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09:05 PM
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Jan 24th, 2021
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Spadesluck Member Posts: 2169 From: Georgia Registered: Jul 2016
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What clutch? I know Spec makes spacers for different conversion setups.
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01:54 AM
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La fiera Member Posts: 2273 From: Mooresville, NC Registered: Jun 2008
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| quote | Originally posted by Spadesluck:
What clutch? I know Spec makes spacers for different conversion setups. |
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Its for a Spec. I compare the Spec clutch vs the clutch I previously used and the stack height is different. The Spec is about 1/4 inch shorter in stack height. I've seen the spacers with the clutch kits from Spec but couldn't find the spacers by themselves. [This message has been edited by La fiera (edited 01-24-2021).]
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03:51 PM
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Will Member Posts: 14267 From: Where you least expect me Registered: Jun 2000
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Probably just need to call SPEC and ask.
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04:37 PM
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PFF
System Bot
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Jan 25th, 2021
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Spadesluck Member Posts: 2169 From: Georgia Registered: Jul 2016
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Like mentioned I do not think they just list them but I do know they have a variety of different spacers. I am sure if you know your air gap they can get a spacer that is close enough.
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01:20 AM
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La fiera Member Posts: 2273 From: Mooresville, NC Registered: Jun 2008
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| quote | Originally posted by Spadesluck:
Like mentioned I do not think they just list them but I do know they have a variety of different spacers. I am sure if you know your air gap they can get a spacer that is close enough. |
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Yes, I called them today and I have the part on the way. Thanks for everyone's imput! Rei
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08:40 PM
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Jan 26th, 2021
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La fiera Member Posts: 2273 From: Mooresville, NC Registered: Jun 2008
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| quote | Originally posted by Will:
Probably just need to call SPEC and ask. |
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Thanks Will. Called Spec and spoke to Danny, he knew what I needed and I have the part coming on the way! [This message has been edited by La fiera (edited 01-26-2021).]
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08:05 PM
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Jan 27th, 2021
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Will Member Posts: 14267 From: Where you least expect me Registered: Jun 2000
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Good to hear!
I'm probably going to have a similar issue with the PTT clutch in an F23, but I'm not sure if I'll end up using GM's HTOB or PTT's or Tilton's or what.
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08:25 AM
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Blacktree Member Posts: 20770 From: Central Florida Registered: Dec 2001
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I wish I would have done that with my valve covers. My engine has the sheet-metal valve covers (very thin metal!). I was able to find a spacer, but needed 2 sets of valve cover gaskets (one under the spacer, and one between the spacer and the valve cover). Getting all that stuff lined up was kind of a pain. It also required longer bolts. Plus the sheet-metal valve covers use cork gaskets, which can be problematic.
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12:47 PM
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ericjon262 Member Posts: 3130 From: everywhere. Registered: Jan 2010
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| quote | Originally posted by Will:
Good to hear!
I'm probably going to have a similar issue with the PTT clutch in an F23, but I'm not sure if I'll end up using GM's HTOB or PTT's or Tilton's or what. |
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If you don't already know, the F23 HTOB and input shaft seal are integral, so you will need a way to seal the input shaft if you use something other than GM. ------------------ "I am not what you so glibly call to be a civilized man. I have broken with society for reasons which I alone am able to appreciate. I am therefore not subject to it's stupid laws, and I ask you to never allude to them in my presence again."
cognita semper
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09:40 PM
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Will Member Posts: 14267 From: Where you least expect me Registered: Jun 2000
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I already have both the Metric bellhousing gearbox and the 3.63 XFE gearbox... Have pulled the HTOB off one of them to check it out. Yeah, GM makes things like that so much fun.
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09:59 PM
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Feb 12th, 2021
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kevin Member Posts: 2722 From: Elk Grove, CA USA Registered: Jan 2000
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??? How close are we in hearing it run? kevin
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12:38 PM
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Feb 13th, 2021
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La fiera Member Posts: 2273 From: Mooresville, NC Registered: Jun 2008
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12:38 AM
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Mar 9th, 2021
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La fiera Member Posts: 2273 From: Mooresville, NC Registered: Jun 2008
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 Going in!! Weather is nice so I think I'll have it in this week. I have to do some more installation of other systems for me to be able to start it. But overall I should be able to fire it up in a couple of weeks!
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10:43 PM
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PFF
System Bot
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Mar 10th, 2021
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Blacktree Member Posts: 20770 From: Central Florida Registered: Dec 2001
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Love the red, white, and blue colors.
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12:20 AM
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La fiera Member Posts: 2273 From: Mooresville, NC Registered: Jun 2008
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Mar 11th, 2021
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Frenchrafe Member Posts: 471 From: Locmiquelic France Registered: Feb 2017
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Mar 17th, 2021
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La fiera Member Posts: 2273 From: Mooresville, NC Registered: Jun 2008
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09:02 PM
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Mar 18th, 2021
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pmbrunelle Member Posts: 4543 From: Grand-Mère, Québec Registered: Sep 2008
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| quote | Originally posted by La fiera: But overall I should be able to fire it up in a couple of weeks! |
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Seems like you accelerated your schedule!
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10:08 PM
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Mar 19th, 2021
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La fiera Member Posts: 2273 From: Mooresville, NC Registered: Jun 2008
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| quote | Originally posted by pmbrunelle:
Seems like you accelerated your schedule! |
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Well it's been 3 years since I started building this engine and I haven't taken the car to the track since 2013. Since I have easier access to track days for free I want to be able to track the Fiero as much as posible and develop the handling, braking and aero. The primary goal for this project is to compete in Time Trial events. First tentative track shakedown is April 30th to May 2nd at Summit Point raceway Main course.
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10:52 AM
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Mar 20th, 2021
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La fiera Member Posts: 2273 From: Mooresville, NC Registered: Jun 2008
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Mar 21st, 2021
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claude dalpe Member Posts: 140 From: montreal,quebec,canada Registered: Feb 2009
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I'm very happy for you, as you say you've been working on it for 3 years and now the results are there. Come back to us with more videos.
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08:58 AM
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La fiera Member Posts: 2273 From: Mooresville, NC Registered: Jun 2008
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| quote | Originally posted by claude dalpe:
I'm very happy for you, as you say you've been working on it for 3 years and now the results are there. Come back to us with more videos. |
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Thank you Claude! Now that the engine runs and the problem with the transmission is fixed I can concentrate on the brakes and aero mods!
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12:40 PM
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