Drag/Standing mile project

[JohnTSI]

Thought I would update this thread.

First thing I did was to redyno the car and found that at the last trip to the track it was at 875awhp. So plenty left to throw at it, once we get the fueling issues straight.

First step was adding a second rail with 4 900cc secondaries using the Forcedfour driver box. With them added we went back to the dyno and they worked well up to the 800hp mark. After that when the secondaries opened it would go lean again, but now it was due to lack of fuel delivery. So it was time to look at the pump.

There where really only 2 options, mechanical or Weldon. And since I am waiting to put the drysump motor together and a mechanical pump on it I decided to go with a weldon 2345a.

// WELDON RACING PUMPS // 2000 HP Fuel Pump -- Weldon Racing Pumps

With the pump installed we went back to the dyno and for once the car was happy and had plenty of fuel. Last run I had a number for was a 970hp run with a 12.0 af ration at 79% duty cycle. We did make one more run but I neglected to hit the sample button at 50psi and the car logged more airflow, was at 82% duty cycle and AF was in the mid 12s so it made more power but I was done for the day. Below is a copy of the log.

Hope to get back to the track soon and attempt a real pass in the car.

 

[constant_proj21]

One of my favorite 1g's, good to hear you worked out the fueling issues.

Just curious, what's this thing weigh? I see it still has the front core support, so no tube framing up front, is there any drastic weight loss in the car?

 

[JohnTSI]

Almost every drag class I want to run requires it to be 2800, so right now with me in it and fuel its at 2803. May put it on a diet soon and add balast when needed to make weight. No matter what it will always have to have carpet dash door panels and interior panels.

 

[constant_proj21]

No matter what it will always have to have carpet dash door panels and interior panels.

That's awesome!

Maybe I missed it, but any details on the dry sump motor you're building next? What sort of gearing will you be using for standing mile? I'm not positive on what our cars gear out to, but I can imagine this thing will get to top pretty quickly haha.

 

[JohnTSI]

That's awesome!

Maybe I missed it, but any details on the dry sump motor you're building next? What sort of gearing will you be using for standing mile? I'm not positive on what our cars gear out to, but I can imagine this thing will get to top pretty quickly haha.

I have the Magnus dry sump kit here already. Going to have Marco choose the pistons he believes will work best. Rods will be another set of RNR aluminum rods. Will alos likely switch to a mechanical fuel pump driven off the back of the dry sump, so if the oil pump throws the belt fuel pump stops turning.

Car in its current form on 245/50zr16 tires at redline should do just over 240. I am going to have Shep get me a setup for a 3.90 final drive for the car so I will switch to 26" slicks and the 3.90 setup for drag and this setup for the mile. May have a custom 5th made since the VR4 one is slightly too long IMO for what I need.

Didn't get a video of the last 2 runs testing the injectors but here is a 950hp run on the dyno.

National Speed: JohnTSi's 1992 Eagle Talon TSi - 950awhp on 45psi... - YouTube

 

[JohnTSI]

Went to the dyno last weekend to check the tune since I couldn't race.

Last time it went down the track it made 875awhp and went 132mph in the 1/8 mile. Today in its current state pulling it on the dyno it made 96X at 44psi. I had the timing turned down from the track to be safe on the first run, so I added 1* back and made a pull 990 awhp at the same boost level.

Car made 1030 at 48-49psi. I have had the bottle in the car all year and have not gotten to spray it down the track yet so I decide to test it just to make sure the AF would be right. Boost set back to 44 psi like before and the 50-60 shot on it kicked it up to 45psi and car made 1069/667. Was not interested in turning the boost up more because I am still not sure I will spray it down the track but was happy to see AF was pretty steady at low 12s and even went slightly right at red line.

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If all goes well we may hit the track tomorrow night and see if we can get it down the track clean.

 

[9!'clipseDOHC]

Congrats on breaking 1000 hp! Is the track tomorrow 1/8th or 1/4 mile?

 

[Nate Crisman]

It's pretty comical to think that you are making about 150% of the total factory rated hp on a single cyl. Nuts.

 

[JohnTSI]

Congrats on breaking 1000 hp! Is the track tomorrow 1/8th or 1/4 mile?

I broke 1000hp over a year ago.

Its a 1/4 mile track.

 

[okcpopeman]

Good luck! No doubt it has the power to be very fast! When will it make it to the mile?

 

[JohnTSI]

Was going to be this weekend but I have to work Saturday so its up in the air may still show up and let Reichen drive it so I don't have to make the licensing passes.

 

[JohnTSI]

Went back to the track today to see if I could keep the rear axles in the car. Boost turned down some, pulled out 2* and decided to roll it out.

First pass, no burnout, turns out both the tires and track where way to cold to hold it. Rolled into it and bogged worried about the axles. Car just spun to the rev limiter in every gear lifted more than I was in it and finally hit the brakes and gave up.

2.3 60'
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Next pass, I was on the 2-step way to long, trying to find the sweet spot on the new clutch. Made over 40psi on the line. Knew this would eject driveline parts with extreme prejudice, let out and caused the car to front fire while still sitting still when the secondaries kicked in. Once I restarted the car and got into it to see if it would run out ok all looked fine.

It was getting late so I pulled around again. This time I decided to let it pull through the staging brake and go from there. Car spun so hard in 1st that lead me to short shift it and bog second, ran good in third then the clutch started slipping in 4th when it got past 8600rpm. Pedaled it once so hard in the log I though I shifted into 5th because it looked like a gear change. It was at 10-11250 the whole last 1/3rd of the track but I knew the car was moving so I kept pedaling it hoping it would grab. 1/8 mile mph was 10-12mph less than normal but it covered the back half a little better.

1.677 60'
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[email protected]

Still getting faster every time out. Time to search for a clutch solution and switch to the 26" slicks.

 

[Mr Peepers]

42 mph on the big end while pedaling it!

So much potential but I can't imagine how difficult it would be to make a clean pass in that thing.

Thanks for the update, keep it coming!

 

[Superman]

Went back to the track today to see if I could keep the rear axles in the car. Boost turned down some, pulled out 2* and decided to roll it out.

First pass, no burnout, turns out both the tires and track where way to cold to hold it. Rolled into it and bogged worried about the axles. Car just spun to the rev limiter in every gear lifted more than I was in it and finally hit the brakes and gave up.

2.3 60'
[email protected]
[email protected]

Next pass, I was on the 2-step way to long, trying to find the sweet spot on the new clutch. Made over 40psi on the line. Knew this would eject driveline parts with extreme prejudice, let out and caused the car to front fire while still sitting still when the secondaries kicked in. Once I restarted the car and got into it to see if it would run out ok all looked fine.

It was getting late so I pulled around again. This time I decided to let it pull through the staging brake and go from there. Car spun so hard in 1st that lead me to short shift it and bog second, ran good in third then the clutch started slipping in 4th when it got past 8600rpm. Pedaled it three times once so hard in the log I though I shifted into 5th because it looked like a gear change. It was at 10-11250 the whole last 1/3rd of the track but I knew the car was moving so I kept pedaling it hoping it would grab. 1/8 mile mph was 10-12mph less than normal but it covered the back half a little better.

1.677 60'
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[email protected]

Still getting faster every time out. Time to search for a clutch solution and switch to the 26" slicks.

Hey John, what problems are you having with the QM twin disk clutch. I have the same clutch.

 

[JohnTSI]

Mine is a PTT, switched to the new disc design and it is now off and on in a 1/8" window. It is also slipping now.

 

[v8s_are_slow]

I have the QM too. Bet the QM>PTT

 

[JohnTSI]

Haha QM and PTT use the same discs. PP is the same pressure last i checked as well.. QM does however offer the vdrive.

 

[v8s_are_slow]

Are you sure? I thought the QM disc werre thicker. I think Tim Zimmer was the one saying that.

 

[JohnTSI]

PTT offeres 3 disc thicknesses QM offers 2 to my knowledge.

 

[v8s_are_slow]

But PTT slips. The prosecution rest. Lol. Best comeback I could come up with for now.

 

[twicks69]

At John's power level I would only use gear drive race friction rally disks that are 0.250" thick. They can make a 0.200" or 0.105" thickness disk, they just understand that those are too thin for our application. If using a PTT, the only different dimension parts are the clutch cover and bolt length, and potentially the spring rate depending on diaphragm selection. In John's car I would measure for warpage and thickness of the floater plate, pressure plate and flywheel step, and replace if necessary otherwise throw in a new set of disks if those all check out good.

John, what kind of life has those disks lived through so far? Mileage, drag passes, dyno pulls, duration, current disk thickness, current disk spline wear patterns, current wear patterns on floater, pressure plate and flywheel friction surface?

Tim Zimmer via Evo Phone

 

[JohnTSI]

At John's power level I would only use gear drive race friction rally disks that are 0.250" thick. They can make a 0.200" or 0.105" thickness disk, they just understand that those are too thin for our application. If using a PTT, the only different dimension parts are the clutch cover and bolt length, and potentially the spring rate depending on diaphragm selection. In John's car I would measure for warpage and thickness of the floater plate, pressure plate and flywheel step, and replace if necessary otherwise throw in a new set of disks if those all check out good.

John, what kind of life has those disks lived through so far? Mileage, drag passes, dyno pulls, duration, current disk thickness, current disk spline wear patterns, current wear patterns on floater, pressure plate and flywheel friction surface?

Tim Zimmer via Evo Phone

These discs and floater where brand new, 2 launches and 4 dyno pulls and some driving to make sure they seated. I am putting in a new pressure plate and clutch cover and will check the flywheel and try one last time before I go to a carbon carbon. Didn't you say you had flywheels in stock if need be? I would love to try a new gear drive QM but don't want to pay for a whole new clutch all over again.

 

[JohnTSI]

Well went back for the South East Faceoff today and made a few passes.

First pass still worried about breaking the rear end I rolled it out the hole was clean until I hit the limiter in 4th forgetting I had lowered it so then I lifted and shifted and boost fell to 12 psi in 4th. Did set a new best MPH though wish I has shifted and not lifted 4th .

1.9586 60'
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Next pass was first pass in the eliminations, was racing STM's white EVO. Tree did something strange left us both rolling out the hole on and off the 2 step. This pass somehow my an fitting for the gates came loose and car hit 58.8 psi and 4th and was breaking up so I lifted. Funny thing is it was likely ignition related due to the gap being .030 because I was at 94%dtc and af was 12.0s.

1.8781 60'
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3rd pass put me on the trailer. Only I could redlight against a 12 second car. Attempted to leave with some power this time but redlighted getting use to the new clutch, car was back to 43-44psi but was missing a little so I lifted then got back in it, did it again so I let out. Hopefully just needs plugs after to 60psi incident.

1.6268 60'
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11.3319@114

All in all happy to see its progressing again, new best mph. Clutch is holding. Will swap plugs and test the car out this week and be back at it next weekend hopefully. I am done rolling it out, its time to go for it again.

 

[9!'clipseDOHC]

I am done rolling it out, its time to go for it again.

Congrats on the MPH!

 

[JohnTSI]

Video of the pass

John Wigger, 9.73@166mph @ South East Face Off. - YouTube