I am having twins
I am sure if I left at a higher rpm on the 2 step this graph would look a bit different. But like I say I am still learning the combo. My converter is VERY loose now so that will be adjusted this winter.
5.93 data by Tom Fiddler, on Flickr
5.93 data by Tom Fiddler, on FlickrLast edited by Forcefed86; Dec 28, 2015 at 01:50 PM.
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https://ls1tech.com/forums/forced-in...7-turbo-s.html
Here is an example of how responsive they were on my bone stock LS1
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Don't think there is a right or wrong, but my "loose" converter basically didn't drop more than 100 rpm or so. The shift on the data log looked like a table top. That's why his picture just struck me as odd when mentioning a loose converter. I think 900-1000ish rpm is about right on a shift personally... unless it's slipping a ton up top.
Last edited by Forcefed86; Dec 25, 2015 at 01:06 PM.
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I'm sure your right it can certainly vary as far as ideal goes.
I would say a good starting point is he should try to be within a few hundred RPM of the calculated shift recovery RPM.
Looking at his log I would say it is too lose because he is not hitting 4psi til 5,500 on the brake. With that motor @ WOT & those small turbos he should be at his 8psi hat mark by no later than 4,500RPM.
I would say a good starting point is he should try to be within a few hundred RPM of the calculated shift recovery RPM.
Looking at his log I would say it is too lose because he is not hitting 4psi til 5,500 on the brake. With that motor @ WOT & those small turbos he should be at his 8psi hat mark by no later than 4,500RPM.
Last edited by gtfoxy; Dec 25, 2015 at 01:07 PM.
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I probably have 200 passes on this converter so I know how it usually works.
I was surprised at how it is responding to this engine. PTC will get me fixed up.
I did get a few test passes at Capitol this week end. Runs were very traction limited but I went there to test my new G Sensor and got the data I needed.
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On The Tree
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From: Winchester Virginia
I'm sure your right it can certainly vary as far as ideal goes.
I would say a good starting point is he should try to be within a few hundred RPM of the calculated shift recovery RPM.
Looking at his log I would say it is too lose because he is not hitting 4psi til 5,500 on the brake. With that motor @ WOT & those small turbos he should be at his 8psi hat mark by no later than 4,500RPM.
I would say a good starting point is he should try to be within a few hundred RPM of the calculated shift recovery RPM.
Looking at his log I would say it is too lose because he is not hitting 4psi til 5,500 on the brake. With that motor @ WOT & those small turbos he should be at his 8psi hat mark by no later than 4,500RPM.
Now it just blows right through that section. You are correct.
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I meant to say "off the brake", I believe. Sry
Just so I am understanding the log right, it took about 2 seconds after getting on the brake to go from 0 to 4psi. Then just over another 2 seconds go by while you finally hit 8psi when you shift at 6,500. On shift recovery you have a slight bobble in pressure then it settles back down for the rest of the run.
Bottom end torque of a turbo motor will humble a converter made for NA applications.
Just so I am understanding the log right, it took about 2 seconds after getting on the brake to go from 0 to 4psi. Then just over another 2 seconds go by while you finally hit 8psi when you shift at 6,500. On shift recovery you have a slight bobble in pressure then it settles back down for the rest of the run.
Bottom end torque of a turbo motor will humble a converter made for NA applications.
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On The Tree
Joined: Jun 2014
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From: Winchester Virginia
I meant to say "off the brake", I believe. Sry
Just so I am understanding the log right, it took about 2 seconds after getting on the brake to go from 0 to 4psi. Then just over another 2 seconds go by while you finally hit 8psi when you shift at 6,500. On shift recovery you have a slight bobble in pressure then it settles back down for the rest of the run.
Bottom end torque of a turbo motor will humble a converter made for NA applications.
Just so I am understanding the log right, it took about 2 seconds after getting on the brake to go from 0 to 4psi. Then just over another 2 seconds go by while you finally hit 8psi when you shift at 6,500. On shift recovery you have a slight bobble in pressure then it settles back down for the rest of the run.
Bottom end torque of a turbo motor will humble a converter made for NA applications.
Still learning this combo...but I Like it!
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On The Tree
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From: Winchester Virginia
Thread Starter
On The Tree
Joined: Jun 2014
Posts: 118
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From: Winchester Virginia
I'd recommend On3 Billet 67s/ Fast spool and room for 1000++whp
https://ls1tech.com/forums/forced-in...7-turbo-s.html
Here is an example of how responsive they were on my bone stock LS1
LSJUAN Twin Turbo Ls1 free 2 stage boost controler testing - YouTube
https://ls1tech.com/forums/forced-in...7-turbo-s.html
Here is an example of how responsive they were on my bone stock LS1
LSJUAN Twin Turbo Ls1 free 2 stage boost controler testing - YouTube
Nice work
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From: Mechanicsburg, PA
Nice meeting you today! Hope the leak was something simple. Your car was running very well! It will really rock when you get the gear and converter sorted out! As if it doesn't rock already, lol. Those china turbos work well.
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On The Tree
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From: Winchester Virginia
Good meeting you Bad Apache. Split a trans cooler line. Got it fixed and made my last license pass Sunday. Out of RPM at the 1/8th but a new best in the 1/8. Steel doors and other changes have it at 2600 lbs now
VERY Happy
2016-09-26_05-12-06 by Tom Fiddler, on Flickr
VERY Happy
2016-09-26_05-12-06 by Tom Fiddler, on Flickr TECH Resident
Joined: Sep 2013
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From: Mechanicsburg, PA
I hope you slept some. Glad it was only a hose. Was this pass still on 13 psi? Wow that car is working! I'd smile as much as you as well, hahaha!
Really liked your electric water pump drive and shock sensors. Some quality products you produce.
Really liked your electric water pump drive and shock sensors. Some quality products you produce.
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On The Tree
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From: Winchester Virginia
Creeped to 15lbs. The shock sensors have been great. I am going to make an automatic tensioner for the WP drive.
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On The Tree
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From: Winchester Virginia