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10.87 @ 128.90 mph on stock twin turbos 21 psi

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Old 05-06-11, 09:57 AM
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Ya pretty much, everything but the pillar plastic and headliner and dashboard (removed stereo system). All other plastics, door panels, air bags and carpet was removed. Other things removed include catback exhaust, all AC, power steering, abs, passenger side headlight stuff (frame and all, to fit my custom cold air intake), wiper motor and wipers, front sway bar, rear strut bar, everything from the hatch area. Little light Oddysey PC680 battery in hatch. antenna motor. other little things etc..

Last edited by tom94RX-7; 05-06-11 at 10:00 AM. Reason: also catback exhaust removed when racing
Old 05-06-11, 10:29 AM
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Congrats! Impressive performance. Are you running on pump gas?
Old 05-06-11, 10:31 AM
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Usually I run pump gas, but this night was with about 50/50 sunoco gt100 unleaded race gas and 93 pump, and I tuned for it (little more timing, same amount of boost)
Old 05-06-11, 10:49 AM
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One HP calculator I used says: Your HP computed from your vehicle MPH is 419.86 rear wheel HP and 466.51 flywheel HP. Your HP computed from your vehicle ET is 376.71 rear wheel HP and 418.57 flywheel HP.

I think this is because ET for 128.90 mph should be much lower for most cars, it can be lower for mine too with a better 60 ft time/hookup.

http://www.wallaceracing.com/hpcalculatorquarter.php
Old 05-06-11, 11:25 AM
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Very Impressive. Congratulations. Crazy weight reduction. When you switching to 4.33 and BNR's? I bet you can hit 10.5.
Old 05-06-11, 11:27 AM
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thanks. see below

Originally Posted by tom94RX-7
Ya pretty much, everything but the pillar plastic and headliner and dashboard (removed stereo system). All other plastics, door panels, air bags and carpet was removed. Other things removed include catback exhaust, all AC, power steering, abs, passenger side headlight stuff (frame and all, to fit my custom cold air intake), wiper motor and wipers, front sway bar, rear strut bar, everything from the hatch area. Little light Oddysey PC680 battery in hatch. antenna motor. other little things etc..
Old 05-06-11, 02:15 PM
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Incredible!
Old 05-06-11, 02:26 PM
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Awesome! Congrats!
Old 05-06-11, 02:40 PM
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Just took a couple pics of the inside. Passenger seat for the gf comes out at the track. Drivers racing seat saves like 20 lbs.
Attached Thumbnails 10.87 @ 128.90 mph on stock twin turbos 21 psi-5693658325_4ff41c8c5f_b.jpg   10.87 @ 128.90 mph on stock twin turbos 21 psi-5693659619_35764050b6_b.jpg  
Old 05-06-11, 06:56 PM
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Very Impressive! Great to see just how far the Stock Turbos can go with continual tweeking.
Congratulations -- Odds are the Record Breaker will be You again.

Thanks for sharing, makes us too-stockers realize just how quick these can be.
Old 05-06-11, 09:59 PM
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Good job man
Old 05-07-11, 11:24 AM
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Congrats Tom and DJSeven, great job guys. Tom, I'm really happy you stuck with it, I think you will own this record forever, I can't see anyone trying to go faster and having your determination.

Great job!

Anthony
Old 05-07-11, 11:22 PM
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You're right, I think this is a record - I believe the previous record on stock twins was 10.98 (?)

Anyway, nice work - proves the big laggy single turbo guys don't have a corner on speed by any stretch. You need a David Garfinkle ported manifold now.
Old 05-08-11, 05:46 AM
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Nice run, congrats!
Old 05-09-11, 12:08 PM
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Glad to see you finally did it. This is a great day for the RX7 community in showing what the stock twins are truly capable of.

Just to clarify, the previous record holder for stock turbos was forum member Boostn7 - 10.98 @ 122.9mph
He also has the power record at 402rwhp

So what's next then? Going for the power record?
Old 05-09-11, 02:21 PM
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Thumbs up

Who are you? And more importantly, why don't I know you? Pittsburgh isn't that big, and there aren't many FDs here.
Nice run though. A buddy of mine ran 11's on stock turbos with a stock motor and a few bolt on's a while back at PRP. These cars always impress the hell out of me.
Nice job!
Old 05-09-11, 03:01 PM
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Thanks everyone. I been running between 122-127 mph for the past couple years but had not put in a perfect run to hit 10's, but now I got the car going faster and its a litter easier. Since I hit 128.9 in the 1/4 mile I think it has to be up over 400 hp, I need to get to a dyno soon, I been trying to but I want to go to the same dyno that I was on a few years ago and they moved a little farther away. And next is just try to hookup and get a great 60 ft without breaking anything, that's why I ran extra tire pressure that time, and see how low I can go on the ET.

Any dyno proven hp gains with the David Garfinkle ported exhaust manifold? I talked to him before about the porting job he does for the twins but decided not to spend the money on it all.
Old 05-09-11, 03:05 PM
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Tom Truxell in Penn Hills. I don't really know anybody or have any friends with a rx7.
There isn't very many in the area that I knew of and never seen your posts on here before. I used to go to PRP alot a few years ago, lately it's been a few times a year. A few years ago I ran 11.16 @ around 122 with the stock motor and sequential twins when it was making around 370 hp. You?
Old 05-09-11, 04:22 PM
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You can port the manifold yourself...I run 19-22 lbs on the street and have been doing so for years.
Old 05-09-11, 10:33 PM
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Originally Posted by tom94RX-7
Any dyno proven hp gains with the David Garfinkle ported exhaust manifold? I talked to him before about the porting job he does for the twins but decided not to spend the money on it all.
Unfortunately I don't have a dyno comparison, but seat of the pants it definitely makes a difference. I've been very impressed with David's work. I recently pulled the manifold and turbos after 25k hard miles and they look EXACTLY the same as when I put them in - no cracks, nothing - all the welding he did held up perfect (everything was ceramic coated)

Personally I think running more than 16-17 psi on stockers or BNR stage 2s with carbon seals is going to significantly shorten the life of the turbos, 15-16 psi has been fine for me. Are you running race gas?
Old 05-09-11, 10:42 PM
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Thanks for the feedback. Ya it may shorten the life of them, but fact is they will make more power with the extra boost if everything is setup right like my car, and they are not too expensive or hard to find a good replacement set as I have done a couple times, it's been worth it. "Running 50/50 Sunoco GT100 race gas & 93 pump gas. My tune.", timing maps tuned a little more aggressive for race gas and same amount of boost.
Old 05-10-11, 01:02 PM
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Holy **** man! Good job. Your car is so clean too.
Old 05-10-11, 07:23 PM
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PA

Originally Posted by tom94RX-7
Tom Truxell in Penn Hills. I don't really know anybody or have any friends with a rx7.
There isn't very many in the area that I knew of and never seen your posts on here before. I used to go to PRP alot a few years ago, lately it's been a few times a year. A few years ago I ran 11.16 @ around 122 with the stock motor and sequential twins when it was making around 370 hp. You?
Hey Tom, I know "of you". I guess you know my buddy George. Now you have 3 friends with RX7s.
I've been to PRP a few times, but mostly with just a few bolt ons. I think I was running high 12s, on shitty Nitto street tires, spinning half way down the track. Haven't been back in a couple years since I fried my clutch (stock) up there and limped home. I want to get back and see how quick the car is with BNR stage 3s and Mickey Thompsons and a bunch of other stuff. Although, I seriously need a tune. I'm pretty much set up for Auto X now. But I'm sure I'll be headed up there this year. Give me a heads up if you're planning a trip to PRP of Beaver Run this year. Maybe we can meet up.
Oh, my name is Joshua and I'm in Carnegie.
Old 05-10-11, 07:40 PM
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Congrats on the time with the twins. I'm one of the ones with a large single. Hope to complete soon and pull some good numbers.
Old 05-10-11, 08:04 PM
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My concern would be how short of a life. I can't see getting more than 20-40k out of them. My first set was toast at 80K and change with no mods. It's just not a durable design to begin with IMO. If I wasn't in the mist of single conversion, this would have inspired me to try it.


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