MADjdm's Turbo Build
Joined: Dec 2004
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Originally Posted by Full Race Geoff,Oct 15 2009, 11:24 AM
sorry JR (flexer) my experiences cause me to disagree with everything you wrote
MADJDM -- do me a favor and email me at geoff@full-race.com i got some info for you and need you to get some info for me
MADJDM -- do me a favor and email me at geoff@full-race.com i got some info for you and need you to get some info for me
Look man I have come to read scripture now DEAL OUT THE INFO Geoff!! Your saying that the 2.2L extra 10% of displacement won't have a potential for 10% more power because the motor can ingest 10% more cfm?
J. R.
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From: Richmond, IN
Originally Posted by Evans Tuning,Oct 12 2009, 05:54 PM
The only variables I can account for on Greg's car not making similar power to the other 15+ s2ks with 3O76r's is either the turbine housing or manifold. At 15 psi backpressure was already starting to increase due to the boost solenoid duty cycle needing to be increased over the midrange duty cycle to maintain 15 psi at redline. The higher the boost, the more duty cycle was needed up top to keep the boost a consistent value during the run..........
.......When i have to hit the wastegate with increasing duty cycle at higher rpm levels, EMAP is starting to exceed MAP.
.......When i have to hit the wastegate with increasing duty cycle at higher rpm levels, EMAP is starting to exceed MAP.
Here is an example...
As you can see the marker is at 8426 rpms shows boost at 11.73psi but it was peaking at 6600 rpm at 12.7psi. I have since added duty in the upper rpms to make the boost more linear. I am also running a 3" straight through exhaust with no muffler, cat or resonator...
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sorry i did not mean to blow you off -- rather than post theory and guesses, Im working with greg to get things sorted, and at the same time we are updating the Full-Race kits + lowering the pricetag... will have plenty of updates soon tho
edit: i am REALLY excited to try out the borgwarner K27 turbo on an s2k, i think it can do 500+ with crazy spool/response for a T3
http://www.full-race.com/articles/borgwarn...-340-500hp.html
edit: i am REALLY excited to try out the borgwarner K27 turbo on an s2k, i think it can do 500+ with crazy spool/response for a T3
http://www.full-race.com/articles/borgwarn...-340-500hp.html
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Originally Posted by Full Race Geoff,Oct 16 2009, 01:15 PM
sorry i did not mean to blow you off -- rather than post theory and guesses, Im working with greg to get things sorted, and at the same time we are updating the Full-Race kits + lowering the pricetag... will have plenty of updates soon tho
Joined: Dec 2004
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OK Geoff. I will be patient....
Now you bring up something interesting. The K27 by BW is a different turbo then I am used to seeing by them. The S line up with there extented tip design always blew the compressor map WAY up allowing the turbo's to stay efficient in high boost applications. Just from the looks of the compressor maps I always told people to go with a Borg warner S_ _ _ if they were looking to run high-boost on a small frame turbo, but run a Garrett GT turbo if they wanted to have a huge sweet spot island on the compressor and run lower boost levels. The Garretts always ran out of steam faster than the Borg Warners when the boost levels were just pushed to high for that frame.
But look at the turbo specs you just posted on the K27. The spread between the inducer diameter and exducer diameter on the compressor wheel is different than what I have seen before. Most compressor wheels have a larger spread on the inducer and exducer diameter. And look at how drawn out and wide the islands are on the compressor map. It is a 6 blade wheel as well.
Remember the bump in power the GT30/76R got once it started using the updated 6 blade wheel instead of the old TO4 7 blade wheel. Basically once the patent was up from the HKS/garrett GT3037 they brought that 6 blade wheel onto the GT30/76R and what a upgrade that was. Used to never see a Garrett 30R's break 500 unless it was the HKS garrett and now it does all the time.
It will be interesting to see your results with this new Borg Warner turbo. I'll be waiting to see the results.
J. R.
Now you bring up something interesting. The K27 by BW is a different turbo then I am used to seeing by them. The S line up with there extented tip design always blew the compressor map WAY up allowing the turbo's to stay efficient in high boost applications. Just from the looks of the compressor maps I always told people to go with a Borg warner S_ _ _ if they were looking to run high-boost on a small frame turbo, but run a Garrett GT turbo if they wanted to have a huge sweet spot island on the compressor and run lower boost levels. The Garretts always ran out of steam faster than the Borg Warners when the boost levels were just pushed to high for that frame.
But look at the turbo specs you just posted on the K27. The spread between the inducer diameter and exducer diameter on the compressor wheel is different than what I have seen before. Most compressor wheels have a larger spread on the inducer and exducer diameter. And look at how drawn out and wide the islands are on the compressor map. It is a 6 blade wheel as well.
Remember the bump in power the GT30/76R got once it started using the updated 6 blade wheel instead of the old TO4 7 blade wheel. Basically once the patent was up from the HKS/garrett GT3037 they brought that 6 blade wheel onto the GT30/76R and what a upgrade that was. Used to never see a Garrett 30R's break 500 unless it was the HKS garrett and now it does all the time.
It will be interesting to see your results with this new Borg Warner turbo. I'll be waiting to see the results.
J. R.
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From: Vancouver
[QUOTE=Full Race Geoff,Oct 16 2009, 02:15 PM] sorry i did not mean to blow you off -- rather than post theory and guesses, Im working with greg to get things sorted, and at the same time we are updating the Full-Race kits + lowering the pricetag... will have plenty of updates soon tho
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