PTK TT update
Le Mans Master
Joined: Oct 2003
Posts: 8,863
Likes: 86
From: PA
St. Jude Donor '08
Originally Posted by Spambell
The 44's are going to be the best over all.
DALTON SHOULD FIND OUT SOON!!
looks like my ptk te44 kit will ship very soon so......this week or early next
i'll be installing, this weekend, fresh built tranny, 3:15 w/hardened out and removing late 03 fuel for 02 and lpe, msd bap 97 lines speed inc rails....
the 4l60e will have some pretty cool parts that kevinsteele@tci has engineered. the drum has been modified and a specicial valve. i'd also like to thank john goebel (professor of hydrolics at texas state college) for his built proof pump.
Le Mans Master
Joined: Sep 2000
Posts: 6,976
Likes: 527
From: Clouds Over California
Originally Posted by ICULUKN-C5
Kevin I was down at Extreme and saw your car through the window. Is it done turning yet? What are the results?
I don't think its finished yet, Mike is supposed to call me today.
Melting Slicks
Joined: Sep 2002
Posts: 2,366
Likes: 0
From: Chandler Az
St. Jude Contributor
Originally Posted by Shinobi'sZ
I don't think its finished yet, Mike is supposed to call me today.
Le Mans Master
Joined: Sep 2000
Posts: 6,976
Likes: 527
From: Clouds Over California
Originally Posted by king_pin
Kevin, whats new with the car??? I saw it on the Dyno this week how is the progress going??? I hope my car gets done next week
I think they will have time to work on yours next week...I am sitting in a holding pattern. We got more Turbo sizing to do. If I wanted an all out drag setup I would leave it as is. But that is not what the majority of C5 owners want, so we are going to swap in some more Turbos. The PT52s dropped the rpms down so that max boost was achieved at 3700rpms...the target range is 3200rpms..right where peak tq should be on an LSx. If I had a 427cid I would most likely keep the PT52s. But @346cid there is not enough exhaust energy to spin them up fast at the lower rpms. I talked to Mike and we had considered doing a hi boost run next week..but I am more concerned with drivability since I spend 90% of my time driving on the street...or maybe its 100% of the time being in the shop...either mine or somebody elses.
So more testing...I already told PTK and they are going to get on it first thing Monday..they were at the Viper vs. Supra event in Texas today. So by time the new Turbos drop ship from PTE, Xtreme probably won't get them until the following week....since I got more time than money...thats what I am left with.
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Le Mans Master
Joined: Oct 2003
Posts: 8,863
Likes: 86
From: PA
St. Jude Donor '08
waiting sucks but what ya going to do!
is it possible that if the car was driven on the road that rpms would come down as the dyno jet doesnt load real world? dyno jet only loads 1800lbs.
is it possible that if the car was driven on the road that rpms would come down as the dyno jet doesnt load real world? dyno jet only loads 1800lbs.
Melting Slicks
Joined: Mar 2003
Posts: 3,116
Likes: 10
From: Macomb MI
Lets see some dyno data!
How was it up top? The last 2 sets of turbos should have made good HP if there was 9psi by the time it got to where peak hp should be. This due to the very low backpressure ratio of oversized turbine side.
So, lets see some.
Phil
How was it up top? The last 2 sets of turbos should have made good HP if there was 9psi by the time it got to where peak hp should be. This due to the very low backpressure ratio of oversized turbine side.
So, lets see some.
Phil
Le Mans Master
Joined: Sep 2000
Posts: 6,976
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From: Clouds Over California
Originally Posted by RoadRebel
Lets see some dyno data!
How was it up top? The last 2 sets of turbos should have made good HP if there was 9psi by the time it got to where peak hp should be. This due to the very low backpressure ratio of oversized turbine side.
So, lets see some.
Phil
How was it up top? The last 2 sets of turbos should have made good HP if there was 9psi by the time it got to where peak hp should be. This due to the very low backpressure ratio of oversized turbine side.
So, lets see some.
Phil
The assumption you made earlier was correct with the PT52s (actually TE44s) it is soft because it is out of its "sweet spot" as you put it a previous post. I don't have a dyno sheet. With max boost occurrying at 3700 rpms and only a couple of lbs at 3000 rpms the tq is suffering. I don't have a dyno sheet but when its done there will be one posted...just like everybody else has done. Except I will post both hi and low boost runs.
All the hp numbers have been the same w/peak @6300 rpms...right around 540+/- 5 through the stock cats and 91 octane of course, but at 9lbs I don't even know if these Turbos are really working..they are probably good for 20-30lbs..but I will never see that. I will keep you guys posted. Like I mentioned earlier, I am concerned with getting good response...not having to launch it at 4000-5000 rpms to build max boost. Ideally I would like boost to start being produced about 2800rpms with full spool by 3200-3300...I suspect that will fix the tq.
Le Mans Master
Joined: Oct 2003
Posts: 8,863
Likes: 86
From: PA
St. Jude Donor '08
Originally Posted by Shinobi'sZ
Phil,
The assumption you made earlier was correct with the PT52s (actually TE44s) it is soft because it is out of its "sweet spot" as you put it a previous post. I don't have a dyno sheet. With max boost occurrying at 3700 rpms and only a couple of lbs at 3000 rpms the tq is suffering. I don't have a dyno sheet but when its done there will be one posted...just like everybody else has done. Except I will post both hi and low boost runs.
All the hp numbers have been the same w/peak @6300 rpms...right around 540+/- 5 through the stock cats and 91 octane of course, but at 9lbs I don't even know if these Turbos are really working..they are probably good for 20-30lbs..but I will never see that. I will keep you guys posted. Like I mentioned earlier, I am concerned with getting good response...not having to launch it at 4000-5000 rpms to build max boost. Ideally I would like boost to start being produced about 2800rpms with full spool by 3200-3300...I suspect that will fix the tq.
The assumption you made earlier was correct with the PT52s (actually TE44s) it is soft because it is out of its "sweet spot" as you put it a previous post. I don't have a dyno sheet. With max boost occurrying at 3700 rpms and only a couple of lbs at 3000 rpms the tq is suffering. I don't have a dyno sheet but when its done there will be one posted...just like everybody else has done. Except I will post both hi and low boost runs.
All the hp numbers have been the same w/peak @6300 rpms...right around 540+/- 5 through the stock cats and 91 octane of course, but at 9lbs I don't even know if these Turbos are really working..they are probably good for 20-30lbs..but I will never see that. I will keep you guys posted. Like I mentioned earlier, I am concerned with getting good response...not having to launch it at 4000-5000 rpms to build max boost. Ideally I would like boost to start being produced about 2800rpms with full spool by 3200-3300...I suspect that will fix the tq.
do think te44 will get you where you wont to be? the cats can cause higher spool?
Melting Slicks
Joined: Mar 2003
Posts: 3,116
Likes: 10
From: Macomb MI
Originally Posted by Shinobi'sZ
Phil,
The assumption you made earlier was correct with the PT52s (actually TE44s) it is soft because it is out of its "sweet spot" as you put it a previous post.
The assumption you made earlier was correct with the PT52s (actually TE44s) it is soft because it is out of its "sweet spot" as you put it a previous post.
The compressor "sweet spot" is on the wrong side of the map. Increasing boosts would only make it worse (moving out of the eff. zone) as your flowing to much air for a give pressure ratio.You could always shrink your motor to help.
Phil
Last edited by RoadRebel; Mar 12, 2005 at 04:01 PM.
Melting Slicks
Joined: Mar 2003
Posts: 3,116
Likes: 10
From: Macomb MI
I just updated compressor map to include the new data point. By only making 530-540ish your actually closer to the "sweet spot". The original data point was from the TTi Stage X and the assumption the PTK would make ~600rwhp at 9psi.
I would hold off on changing the compressor side and run it at higher boost levels to plot more data points. It may just need turbine side changes.
Phil
I would hold off on changing the compressor side and run it at higher boost levels to plot more data points. It may just need turbine side changes.
Phil
Hey Phil how are my eletric cutouts going to work on my TT setup? Is this really going to mess my back pressure up when they are wide open?
Le Mans Master
Joined: Aug 2003
Posts: 7,202
Likes: 3
From: somwhere Texas
Originally Posted by NICK YOSKIN
do think te44 will get you where you wont to be? the cats can cause higher spool?
Le Mans Master
Joined: Oct 2003
Posts: 8,863
Likes: 86
From: PA
St. Jude Donor '08
Originally Posted by b98
Nick I'm going with PTK TT , 383 with auto,FLP level 4,2800 stall. will the 44 be the right turbos.
honesty i cannot answer that but i believe that so....
Le Mans Master
Joined: Oct 2003
Posts: 8,863
Likes: 86
From: PA
St. Jude Donor '08
Originally Posted by RoadRebel
Decreasing exhaust restriction via cutouts will typically shorten spool time
Phil
Phil
cool beans!!!!!!!!!!!! i gottem too. they gotta drop alot of back pressure as the noise level jumps BIG time.