Drivetrain Sprintex Stage 2 vs JCW vs Harrop TVS900
#1
07-28-2021, 11:52 AM
Sprintex Stage 2 vs JCW vs Harrop TVS900
I'm on the last legs of my 2nd supercharger, purchased rebuilt from WMW back in 2012-2013. Lasted me about 80k miles, but I think the noticeable whine disappeared around 50k miles. I am choosing to keep my car since I've done extensive work on it for the past 13 years, and don't really need another car.. so I'm looking to get another SC, but can't find any definitive information on which of these SC options might be best. I don't track, but I am a spirited driver, and I want to make it at least another 80-100k miles in my beloved R53. What would be the best decision, longevity and cost-wise for daily use? Sprintex Stage 2 (~$3500 on outmotoring), JCW ($2k on WMW), Harrop ($3250 on SCOL)? I'm particularly interested in the Harrop TVS900, if it may offer a significant change in performance over the older Eaton design of the JCW.
Thanks!
Thanks!
#2
07-28-2021, 11:56 AM
#4
07-28-2021, 10:37 PM
thevast...
To be sure of what you are buying, you need to do some serious homework.
You need to find out what each blower will put out, in cubic inches of air, per...each single 360° rotation of the pulley for the best power.
Remember...pressure equals horsepower AND...heat..! So a QUALITY intercooler (see oem, GT) will be required.
The Harrop with its four lobes will need to spin faster than the OEM blower with it's three lobes. The addition of the fourth lobe, takes up a LOT of air space in the case. So it will need to spin faster than the stock blower to put out the same airflow. But, with the higher helix and the addition of one more rotor lobe per each, its air delivery will no doubt put out a smoother, but lower airflow than the stock blower. OR, have a larger case to make up for the difference. Equaling less heat.
The Sprintex, ideally "should" be the winner because of the rotor and case design, but again, to do its work well, needs to spin faster than the stock blower, BUT it will put out a "smoother" flow than the stock blower. Equaling less air heat.
BUT...all this said, there's a LOT more to each design to make it as efficient as it can be. Namely the design and manufacturing clearances, rotor lobe to rotor lobe clearance, rotor lobe to case clearance, rotor to end plate (front and rear) clearance.
This looks like a LOT of homework to figure out. Unless someone has dyno-tested each of these blowers on the same engine, on the same dyno, with the same operator (this is as important as the other two items), this sounds like a lot of investigative homework.
Unless you have a lot of time, patients, I'd just go for the JCW rebuild / new blower. The rotors need to be coated, the case needs to be unscratched or not remachined.
Best of luck in your search.
Mike
To be sure of what you are buying, you need to do some serious homework.
You need to find out what each blower will put out, in cubic inches of air, per...each single 360° rotation of the pulley for the best power.
Remember...pressure equals horsepower AND...heat..! So a QUALITY intercooler (see oem, GT) will be required.
The Harrop with its four lobes will need to spin faster than the OEM blower with it's three lobes. The addition of the fourth lobe, takes up a LOT of air space in the case. So it will need to spin faster than the stock blower to put out the same airflow. But, with the higher helix and the addition of one more rotor lobe per each, its air delivery will no doubt put out a smoother, but lower airflow than the stock blower. OR, have a larger case to make up for the difference. Equaling less heat.
The Sprintex, ideally "should" be the winner because of the rotor and case design, but again, to do its work well, needs to spin faster than the stock blower, BUT it will put out a "smoother" flow than the stock blower. Equaling less air heat.
BUT...all this said, there's a LOT more to each design to make it as efficient as it can be. Namely the design and manufacturing clearances, rotor lobe to rotor lobe clearance, rotor lobe to case clearance, rotor to end plate (front and rear) clearance.
This looks like a LOT of homework to figure out. Unless someone has dyno-tested each of these blowers on the same engine, on the same dyno, with the same operator (this is as important as the other two items), this sounds like a lot of investigative homework.
Unless you have a lot of time, patients, I'd just go for the JCW rebuild / new blower. The rotors need to be coated, the case needs to be unscratched or not remachined.
Best of luck in your search.
Mike
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thevastdifference (07-29-2021)
#5
07-29-2021, 04:19 AM
The following users liked this post:
thevastdifference (07-29-2021)
#6
07-29-2021, 08:08 AM
MrBlah -
Well...any chance of getting an address or directions to this Facebook group/page ? Most likely, more than just a couple of us would be interested.
Yes, it's (the Sprintex) the only screw design in the group. Runs hot ? In the original V-8 configurations, they don't run any hotter than a Roots design. Since they don't "pound" the air like a Roots does, they actually run a little cooler from what I've seen over the years. The only reason they'd run hotter is if you put out more boost. Then sure...it would...cause the air to be hotter, the additional "pressure" causes this to happen. I believe I sorta noted this in my above comments.
They are just BIG and expensive.
Mike
Well...any chance of getting an address or directions to this Facebook group/page ? Most likely, more than just a couple of us would be interested.
Yes, it's (the Sprintex) the only screw design in the group. Runs hot ? In the original V-8 configurations, they don't run any hotter than a Roots design. Since they don't "pound" the air like a Roots does, they actually run a little cooler from what I've seen over the years. The only reason they'd run hotter is if you put out more boost. Then sure...it would...cause the air to be hotter, the additional "pressure" causes this to happen. I believe I sorta noted this in my above comments.
They are just BIG and expensive.
Mike
The following users liked this post:
thevastdifference (07-29-2021)
#7
07-29-2021, 01:19 PM
MrBlah -
Well...any chance of getting an address or directions to this Facebook group/page ? Most likely, more than just a couple of us would be interested.
Yes, it's (the Sprintex) the only screw design in the group. Runs hot ? In the original V-8 configurations, they don't run any hotter than a Roots design. Since they don't "pound" the air like a Roots does, they actually run a little cooler from what I've seen over the years. The only reason they'd run hotter is if you put out more boost. Then sure...it would...cause the air to be hotter, the additional "pressure" causes this to happen. I believe I sorta noted this in my above comments.
They are just BIG and expensive.
Mike
Well...any chance of getting an address or directions to this Facebook group/page ? Most likely, more than just a couple of us would be interested.
Yes, it's (the Sprintex) the only screw design in the group. Runs hot ? In the original V-8 configurations, they don't run any hotter than a Roots design. Since they don't "pound" the air like a Roots does, they actually run a little cooler from what I've seen over the years. The only reason they'd run hotter is if you put out more boost. Then sure...it would...cause the air to be hotter, the additional "pressure" causes this to happen. I believe I sorta noted this in my above comments.
They are just BIG and expensive.
Mike
The Facebook group is called r53 alternate superchargers you should be able to search to find it, quite a few are working on m62 superchargers I have one in the garage Almost ready to go on one of my cars
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#8
07-29-2021, 01:20 PM
MrBlah -
Well...any chance of getting an address or directions to this Facebook group/page ? Most likely, more than just a couple of us would be interested.
Yes, it's (the Sprintex) the only screw design in the group. Runs hot ? In the original V-8 configurations, they don't run any hotter than a Roots design. Since they don't "pound" the air like a Roots does, they actually run a little cooler from what I've seen over the years. The only reason they'd run hotter is if you put out more boost. Then sure...it would...cause the air to be hotter, the additional "pressure" causes this to happen. I believe I sorta noted this in my above comments.
They are just BIG and expensive.
Mike
Well...any chance of getting an address or directions to this Facebook group/page ? Most likely, more than just a couple of us would be interested.
Yes, it's (the Sprintex) the only screw design in the group. Runs hot ? In the original V-8 configurations, they don't run any hotter than a Roots design. Since they don't "pound" the air like a Roots does, they actually run a little cooler from what I've seen over the years. The only reason they'd run hotter is if you put out more boost. Then sure...it would...cause the air to be hotter, the additional "pressure" causes this to happen. I believe I sorta noted this in my above comments.
They are just BIG and expensive.
Mike
The Facebook group is called r53 alternate superchargers you should be able to search to find it, quite a few are working on m62 superchargers I have one in the garage Almost ready to go on one of my cars
Also something to point out the Eaton superchargers like the m45, m62 and tvs move the air down the outside of the housing not through the middle of the lobes
#9
07-29-2021, 01:43 PM
thevast...
To be sure of what you are buying, you need to do some serious homework.
You need to find out what each blower will put out, in cubic inches of air, per...each single 360° rotation of the pulley for the best power.
Remember...pressure equals horsepower AND...heat..! So a QUALITY intercooler (see oem, GT) will be required.
The Harrop with its four lobes will need to spin faster than the OEM blower with it's three lobes. The addition of the fourth lobe, takes up a LOT of air space in the case. So it will need to spin faster than the stock blower to put out the same airflow. But, with the higher helix and the addition of one more rotor lobe per each, its air delivery will no doubt put out a smoother, but lower airflow than the stock blower. OR, have a larger case to make up for the difference. Equaling less heat.
The Sprintex, ideally "should" be the winner because of the rotor and case design, but again, to do its work well, needs to spin faster than the stock blower, BUT it will put out a "smoother" flow than the stock blower. Equaling less air heat.
BUT...all this said, there's a LOT more to each design to make it as efficient as it can be. Namely the design and manufacturing clearances, rotor lobe to rotor lobe clearance, rotor lobe to case clearance, rotor to end plate (front and rear) clearance.
This looks like a LOT of homework to figure out. Unless someone has dyno-tested each of these blowers on the same engine, on the same dyno, with the same operator (this is as important as the other two items), this sounds like a lot of investigative homework.
Unless you have a lot of time, patients, I'd just go for the JCW rebuild / new blower. The rotors need to be coated, the case needs to be unscratched or not remachined.
Best of luck in your search.
Mike
To be sure of what you are buying, you need to do some serious homework.
You need to find out what each blower will put out, in cubic inches of air, per...each single 360° rotation of the pulley for the best power.
Remember...pressure equals horsepower AND...heat..! So a QUALITY intercooler (see oem, GT) will be required.
The Harrop with its four lobes will need to spin faster than the OEM blower with it's three lobes. The addition of the fourth lobe, takes up a LOT of air space in the case. So it will need to spin faster than the stock blower to put out the same airflow. But, with the higher helix and the addition of one more rotor lobe per each, its air delivery will no doubt put out a smoother, but lower airflow than the stock blower. OR, have a larger case to make up for the difference. Equaling less heat.
The Sprintex, ideally "should" be the winner because of the rotor and case design, but again, to do its work well, needs to spin faster than the stock blower, BUT it will put out a "smoother" flow than the stock blower. Equaling less air heat.
BUT...all this said, there's a LOT more to each design to make it as efficient as it can be. Namely the design and manufacturing clearances, rotor lobe to rotor lobe clearance, rotor lobe to case clearance, rotor to end plate (front and rear) clearance.
This looks like a LOT of homework to figure out. Unless someone has dyno-tested each of these blowers on the same engine, on the same dyno, with the same operator (this is as important as the other two items), this sounds like a lot of investigative homework.
Unless you have a lot of time, patients, I'd just go for the JCW rebuild / new blower. The rotors need to be coated, the case needs to be unscratched or not remachined.
Best of luck in your search.
Mike
https://www.waymotorworks.com/john-c...ercharger.html
however, now I'm suspecting my engine might need a new head and head gasket, as my ecu is throwing codes even after extensive work has been done to it lately (cylinder 2 misfire especially).. so i found a 2006 r53 engine with 43k miles from one of my parts guys, charging 3500$ for it.
throwing a new sc on a faulty engine might not be the best option at this point, right..
#10
07-30-2021, 06:46 PM
thanks for the info! I'm also leaning towards the JCW, WMW states that it's not a rebuilt SC:
https://www.waymotorworks.com/john-c...ercharger.html
however, now I'm suspecting my engine might need a new head and head gasket, as my ecu is throwing codes even after extensive work has been done to it lately (cylinder 2 misfire especially).. so i found a 2006 r53 engine with 43k miles from one of my parts guys, charging 3500$ for it.
throwing a new sc on a faulty engine might not be the best option at this point, right..
https://www.waymotorworks.com/john-c...ercharger.html
however, now I'm suspecting my engine might need a new head and head gasket, as my ecu is throwing codes even after extensive work has been done to it lately (cylinder 2 misfire especially).. so i found a 2006 r53 engine with 43k miles from one of my parts guys, charging 3500$ for it.
throwing a new sc on a faulty engine might not be the best option at this point, right..
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