Vortech Blower question
Thread Starter
Supporting Vendor
Joined: Jul 2010
Posts: 8,550
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From: Republic of Texas
Vortech Blower question
I have a Vortech SQ S-trim blower that will need to be re-built pretty soon (getting a little noise and a small oil leak)
I'm considering having the internals upgraded to the SI-trim unit
According to the website, My S trim has the following specs:
Max Speed:
50000 RPM
Max Boost:
20 PSI
Max Flow:
1000 CFM
Max Power:
680 HP
Peak Efficiency:
72%
The SI trim has slightly better numbers:
Max Speed:
52000 RPM
Max Boost:
22 PSI
Max Flow:
1150 CFM
Max Power:
775 HP
Peak Efficiency:
78%
Considering they both fit in the same size housing, I'm curious where the extra efficiency and flow come from. Does this have to do with transmission gear ratios?
Second is it worth the ~$350 to upgrade to the SI trim or will i notice a difference at all?
thanks.
I'm considering having the internals upgraded to the SI-trim unit
According to the website, My S trim has the following specs:
Max Speed:
50000 RPM
Max Boost:
20 PSI
Max Flow:
1000 CFM
Max Power:
680 HP
Peak Efficiency:
72%
The SI trim has slightly better numbers:
Max Speed:
52000 RPM
Max Boost:
22 PSI
Max Flow:
1150 CFM
Max Power:
775 HP
Peak Efficiency:
78%
Considering they both fit in the same size housing, I'm curious where the extra efficiency and flow come from. Does this have to do with transmission gear ratios?
Second is it worth the ~$350 to upgrade to the SI trim or will i notice a difference at all?
thanks.
Last edited by TheRadioFlyer; Mar 2, 2011 at 11:24 PM.
Tech Contributor
Joined: Apr 2007
Posts: 10,924
Likes: 78
From: Forney Texas
Different compressor blade on the SI trim.
Only worth it if you're planning on using the extra power and you're not going to miss your house payment or electric bill this month over the extra 350.00.
Only worth it if you're planning on using the extra power and you're not going to miss your house payment or electric bill this month over the extra 350.00.
Thread Starter
Supporting Vendor
Joined: Jul 2010
Posts: 8,550
Likes: 903
From: Republic of Texas
QUOTE=Mike04;1576949231]Is the $350 in addition to what it would cost to rebuild your current SC?
[/QUOTE]
Yes
Thread Starter
Supporting Vendor
Joined: Jul 2010
Posts: 8,550
Likes: 903
From: Republic of Texas
I'm also considering a custom-built impeller in place of th SI upgrade by vortech. It's a couple hundred more, but compared to the vortech impeller it looks like it would be WAY more efficient.
http://www.928motorsports.com/parts/...h_impeller.php
http://www.928motorsports.com/parts/...h_impeller.php
Last edited by TheRadioFlyer; Mar 3, 2011 at 06:50 PM.
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From: Oxnard SoCal www.aacorvette.com www.superchargersuperstore.com
Don't be fooled by the looks. Vortech has a ton of money in the impeller design software. The impeller in the picture is the (old) SC-Trim, which is a cut down (old) S-Trim impeller. I cannot believe that the 928 impeller would even get close to the 78% efficiency range of the Si-Trim.
Thread Starter
Supporting Vendor
Joined: Jul 2010
Posts: 8,550
Likes: 903
From: Republic of Texas
Don't be fooled by the looks. Vortech has a ton of money in the impeller design software. The impeller in the picture is the (old) SC-Trim, which is a cut down (old) S-Trim impeller. I cannot believe that the 928 impeller would even get close to the 78% efficiency range of the Si-Trim.
The SI trim appears to still have the straight vanes of the S-trim:
http://www.aacorvette.com/blog/wp-co...02/si-trim.jpg
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Melting Slicks
Joined: Jan 2007
Posts: 3,021
Likes: 133
From: Conejo Valley CA
Radioflyer, I would really like to know how many miles did you have on the Vortech blower before it started leaking? I just made the switch to a Vortech head unit because my Procharger started leaking bad at a mere 30K miles of use. I am hoping the Vortech will go much further than that.
Melting Slicks
Joined: Feb 2008
Posts: 3,405
Likes: 3
From: Gboro/H-point/Reidsville NC
I have a Vortech SQ S-trim blower that will need to be re-built pretty soon (getting a little noise and a small oil leak)
I'm considering having the internals upgraded to the SI-trim unit
According to the website, My S trim has the following specs:
Max Speed:
50000 RPM
Max Boost:
20 PSI
Max Flow:
1000 CFM
Max Power:
680 HP
Peak Efficiency:
72%
The SI trim has slightly better numbers:
Max Speed:
52000 RPM
Max Boost:
22 PSI
Max Flow:
1150 CFM
Max Power:
775 HP
Peak Efficiency:
78%
Considering they both fit in the same size housing, I'm curious where the extra efficiency and flow come from. Does this have to do with transmission gear ratios?
Second is it worth the ~$350 to upgrade to the SI trim or will i notice a difference at all?
thanks.
I'm considering having the internals upgraded to the SI-trim unit
According to the website, My S trim has the following specs:
Max Speed:
50000 RPM
Max Boost:
20 PSI
Max Flow:
1000 CFM
Max Power:
680 HP
Peak Efficiency:
72%
The SI trim has slightly better numbers:
Max Speed:
52000 RPM
Max Boost:
22 PSI
Max Flow:
1150 CFM
Max Power:
775 HP
Peak Efficiency:
78%
Considering they both fit in the same size housing, I'm curious where the extra efficiency and flow come from. Does this have to do with transmission gear ratios?
Second is it worth the ~$350 to upgrade to the SI trim or will i notice a difference at all?
thanks.
The answer is yes and very worth it.
Thread Starter
Supporting Vendor
Joined: Jul 2010
Posts: 8,550
Likes: 903
From: Republic of Texas
Radioflyer, I would really like to know how many miles did you have on the Vortech blower before it started leaking? I just made the switch to a Vortech head unit because my Procharger started leaking bad at a mere 30K miles of use. I am hoping the Vortech will go much further than that.
Thread Starter
Supporting Vendor
Joined: Jul 2010
Posts: 8,550
Likes: 903
From: Republic of Texas
I decided to be patient and sent the blower to vortech for a rebuild. Good thing too since the gears were pretty warn down. While i'm not exactly happy about the bill, but it beats buying a new blower and plus i got the Si-trim upgrade.
The rebuilt blower is so quiet, you'd have to listen really hard to know the car has a supercharger. I also installed a custom aluminum restrictor plate that reduced the ID of the intake from about 3.25" to 2.875" to limit top-end boost.
Initial impressions....the S-trim is freaking incredible. I'm seeing about 1-1.5 pounds more boost at the same throttle level as the S-trim....and thus it puts power right where I want it. I haven't really gotten on it hard yet and won't do that until i get the new RX dual valve catch installed so I'm not throwing oil-vapor into my new blower.
The rebuilt blower is so quiet, you'd have to listen really hard to know the car has a supercharger. I also installed a custom aluminum restrictor plate that reduced the ID of the intake from about 3.25" to 2.875" to limit top-end boost.
Initial impressions....the S-trim is freaking incredible. I'm seeing about 1-1.5 pounds more boost at the same throttle level as the S-trim....and thus it puts power right where I want it. I haven't really gotten on it hard yet and won't do that until i get the new RX dual valve catch installed so I'm not throwing oil-vapor into my new blower.
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Don't be fooled by the looks. Vortech has a ton of money in the impeller design software. The impeller in the picture is the (old) SC-Trim, which is a cut down (old) S-Trim impeller. I cannot believe that the 928 impeller would even get close to the 78% efficiency range of the Si-Trim.
Former Vendor
Joined: Jul 2008
Posts: 4,327
Likes: 7
From: Oxnard SoCal www.aacorvette.com www.superchargersuperstore.com
:o
PM Sent.
I decided to be patient and sent the blower to vortech for a rebuild. Good thing too since the gears were pretty warn down. While i'm not exactly happy about the bill, but it beats buying a new blower and plus i got the Si-trim upgrade.
The rebuilt blower is so quiet, you'd have to listen really hard to know the car has a supercharger. I also installed a custom aluminum restrictor plate that reduced the ID of the intake from about 3.25" to 2.875" to limit top-end boost.
Initial impressions....the S-trim is freaking incredible. I'm seeing about 1-1.5 pounds more boost at the same throttle level as the S-trim....and thus it puts power right where I want it. I haven't really gotten on it hard yet and won't do that until i get the new RX dual valve catch installed so I'm not throwing oil-vapor into my new blower.
The rebuilt blower is so quiet, you'd have to listen really hard to know the car has a supercharger. I also installed a custom aluminum restrictor plate that reduced the ID of the intake from about 3.25" to 2.875" to limit top-end boost.
Initial impressions....the S-trim is freaking incredible. I'm seeing about 1-1.5 pounds more boost at the same throttle level as the S-trim....and thus it puts power right where I want it. I haven't really gotten on it hard yet and won't do that until i get the new RX dual valve catch installed so I'm not throwing oil-vapor into my new blower.
Melting Slicks
Joined: Jul 2004
Posts: 2,844
Likes: 144
From: Northern Ireland
I want to know when the blower guys are getting some of these new fancy billet compressor wheels for our superchargers !!
Every turbo unit is getting them, so surely there must be improvements available for the SC users ?
Every turbo unit is getting them, so surely there must be improvements available for the SC users ?
Melting Slicks
Joined: Feb 2008
Posts: 3,405
Likes: 3
From: Gboro/H-point/Reidsville NC
I decided to be patient and sent the blower to vortech for a rebuild. Good thing too since the gears were pretty warn down. While i'm not exactly happy about the bill, but it beats buying a new blower and plus i got the Si-trim upgrade.
The rebuilt blower is so quiet, you'd have to listen really hard to know the car has a supercharger. I also installed a custom aluminum restrictor plate that reduced the ID of the intake from about 3.25" to 2.875" to limit top-end boost.
Initial impressions....the S-trim is freaking incredible. I'm seeing about 1-1.5 pounds more boost at the same throttle level as the S-trim....and thus it puts power right where I want it. I haven't really gotten on it hard yet and won't do that until i get the new RX dual valve catch installed so I'm not throwing oil-vapor into my new blower.
The rebuilt blower is so quiet, you'd have to listen really hard to know the car has a supercharger. I also installed a custom aluminum restrictor plate that reduced the ID of the intake from about 3.25" to 2.875" to limit top-end boost.
Initial impressions....the S-trim is freaking incredible. I'm seeing about 1-1.5 pounds more boost at the same throttle level as the S-trim....and thus it puts power right where I want it. I haven't really gotten on it hard yet and won't do that until i get the new RX dual valve catch installed so I'm not throwing oil-vapor into my new blower.
