440ci Z06, Ebay "PTK" kit; some results, some questions.
11-11-2008, 01:56 AM
#21
AMAZING work there Vadian! congrats mate!
and more proof that these "crappy" ebay kits actually work pretty well!
one question though, what was the piping like? i have heard its SS where as the PTK kits used Mild!!
Chris.
and more proof that these "crappy" ebay kits actually work pretty well!
one question though, what was the piping like? i have heard its SS where as the PTK kits used Mild!!
Chris.
11-11-2008, 06:18 AM
#22
You have no boost controller on it?
So really you are running of just the springs correct?
Then you should only see 6at the end of the run because of the loss through the piping and the intercooler (when referencing from the compressor cover). The 8-9 at the beginning is merely a spike from inadequate gates or gate placement. I bet with a boost controller or different springs you could make closer to 850whp with those units before they run outa steam.
So really you are running of just the springs correct?
Then you should only see 6at the end of the run because of the loss through the piping and the intercooler (when referencing from the compressor cover). The 8-9 at the beginning is merely a spike from inadequate gates or gate placement. I bet with a boost controller or different springs you could make closer to 850whp with those units before they run outa steam.
11-11-2008, 06:35 AM
#23
lol thats awesome. I love seeing results of the ebay kits that are good. **** 700 rwhp for the $$ you paid and with those crap *** turbos is just freakin awesome.
Also, I once bought this $10k kit from a well known turbo kit manuf. and well, the AMAZING BOV's they gave me leaked under boost, so I couldnt build any kind of power and the car made like 600 rwhp and never hit the gates. Put in new bov's and the car made 20 lbs of boost before I **** myself and got my foot outta the throttle. Point is, yay ebay.
Also, I once bought this $10k kit from a well known turbo kit manuf. and well, the AMAZING BOV's they gave me leaked under boost, so I couldnt build any kind of power and the car made like 600 rwhp and never hit the gates. Put in new bov's and the car made 20 lbs of boost before I **** myself and got my foot outta the throttle. Point is, yay ebay.
11-11-2008, 06:40 AM
#24
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Hot pipes are all stainless, cold pipes are all aluminum.
You have no boost controller on it?
So really you are running of just the springs correct?
Then you should only see 6at the end of the run because of the loss through the piping and the intercooler (when referencing from the compressor cover). The 8-9 at the beginning is merely a spike from inadequate gates or gate placement. I bet with a boost controller or different springs you could make closer to 850whp with those units before they run outa steam.
So really you are running of just the springs correct?
Then you should only see 6at the end of the run because of the loss through the piping and the intercooler (when referencing from the compressor cover). The 8-9 at the beginning is merely a spike from inadequate gates or gate placement. I bet with a boost controller or different springs you could make closer to 850whp with those units before they run outa steam.
I know with another turbo car I've dealt with, it would always creep to 17psi regardless of what spring was in the wastegate.
I'd like to test your theory on the boost controller. You think a quick jig with a manual boost controller would produce a similar result with a electronic boost controller? That or I'll pick up some 1bar springs.
11-11-2008, 06:44 AM
#25
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im surprized no one asked about the a/r ratio on those turbos, maybe that peice of information will tell so much in addition to the compressor wheel diameter.
as far as I know the APS GT35R are custom spec turbos with a larger turbine housing not available if you look on Garrets website, 1.06 a/r FYI
as far as I know the APS GT35R are custom spec turbos with a larger turbine housing not available if you look on Garrets website, 1.06 a/r FYI
Last edited by ayousef; 11-11-2008 at 07:35 AM.
11-11-2008, 06:45 AM
#26
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But really, I would like to read on someone else's experience. I'm replacing them anyway but I just wanted to make a point.
11-11-2008, 11:46 AM
#27
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And no offence to you, but I would love to see a thread where someone has these turbos and it has blown apart on them. And I have searched. All I have come up with is a bunch of bandwagooneers that say they are nothing but paperweights, doorstops, yada yada, because some other shop claimed they were junk since they weren't the turbo's he/she is selling for twice as much.
But really, I would like to read on someone else's experience. I'm replacing them anyway but I just wanted to make a point.
But really, I would like to read on someone else's experience. I'm replacing them anyway but I just wanted to make a point.
It's good no one locked this thread.
11-11-2008, 12:20 PM
#28
FormerVendor
im surprized no one asked about the a/r ratio on those turbos, maybe that peice of information will tell so much in addition to the compressor wheel diameter.
as far as I know the APS GT35R are custom spec turbos with a larger turbine housing not available if you look on Garrets website, 1.06 a/r FYI
as far as I know the APS GT35R are custom spec turbos with a larger turbine housing not available if you look on Garrets website, 1.06 a/r FYI
11-11-2008, 02:59 PM
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11-11-2008, 05:16 PM
#31
I think making that much power is great for a budget turbo setup. Kudos for that. There is something not quite operating properly as you can see. Hellbents10 is correct on loosing boost through the intercooler and piping. That's exactly what is happening. I bet if you really cranked it up you could make a lot more power.
11-11-2008, 07:12 PM
#32
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I think making that much power is great for a budget turbo setup. Kudos for that. There is something not quite operating properly as you can see. Hellbents10 is correct on loosing boost through the intercooler and piping. That's exactly what is happening. I bet if you really cranked it up you could make a lot more power.
So, in theory, I should be able to reference the wastegates from the intake manifold and it should maintain pressure throughout the pull unless they can't bypass enough exhaust energy.
11-11-2008, 07:59 PM
#34
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So as it sits now, the more air the turbo is moving the more of a pressure loss I am losing through the intercooler and piping. The compressor is still seeing 8-9 psi and my intake manifold pressure is gradually decreasing as more air is forced through. Is this what is happening?
So, in theory, I should be able to reference the wastegates from the intake manifold and it should maintain pressure throughout the pull unless they can't bypass enough exhaust energy.
So, in theory, I should be able to reference the wastegates from the intake manifold and it should maintain pressure throughout the pull unless they can't bypass enough exhaust energy.
Your turbo may be producing 10 pounds, but is losing some psi because of the intercooler. So to get the PSI you want in the end, you connect it to the intake manifold.
You will see whatever your spring is set at if you reference it off the intake manifold.
11-11-2008, 08:56 PM
#35
And no offence to you, but I would love to see a thread where someone has these turbos and it has blown apart on them. And I have searched. All I have come up with is a bunch of bandwagooneers that say they are nothing but paperweights, doorstops, yada yada, because some other shop claimed they were junk since they weren't the turbo's he/she is selling for twice as much.
But really, I would like to read on someone else's experience. I'm replacing them anyway but I just wanted to make a point.
But really, I would like to read on someone else's experience. I'm replacing them anyway but I just wanted to make a point.
11-12-2008, 05:06 AM
#37
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I'll have to talk to Eric and see what he has to read backpressure.
BTW, you're selling your PTK kit?
Switching that over will be first on the agenda Saturday. I bet it makes quite a bit more power.
So what good use is that port on the compressor? You don't want to reference your fuel regulator or even your MAP since its not actual pressure in the manifold.
11-12-2008, 05:15 AM
#38
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i dont know why but for some reason i thought you had an f-body..good power numbers but something is lacking for sure. I have a c5r 427 with 64's and the PTK version of the PTK kit.
The belt can be changed from the bottom, and plugs can be changed in 45-60min. And it looks GREAT!!!!!!!!!!!!!!
The belt can be changed from the bottom, and plugs can be changed in 45-60min. And it looks GREAT!!!!!!!!!!!!!!
Looks awesome!
Where'd ya get those sleeves around your downpipe (just below the master cylinder)?
How do you like those 64s? How much boost are you running and what are you making if you don't mind me asking. I'm thinking of trying out some 67s, either the PT6776 or the Garrett T04R.
