Is the twinscrew really worth it?
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From: Maidstone, SK
Is the twinscrew really worth it?
I was doing some browsing through the websites of blower manufacturers, as well as some other forums. I'm not sure how acurate this information is (it came from an S2000 forum 
), but it made me wonder.
Edit: They seem to call the Eaton M62 by the name MP62. Never heard it called that before, but what ever.
I'll state this again -> I didn't compile this information, nor do I think it is 100% correct. I'm posting it to see what you guys have to say about it.
), but it made me wonder.Edit: They seem to call the Eaton M62 by the name MP62. Never heard it called that before, but what ever.
Just tallied up some numbers from the MP62 blower and two Lysholm superchargers.
Constants:
Flow Rate - 525 CFM ~ 350 HP
Pressure Ratio - 1.7 ~ 10 psi manifold boost pressure
MP62
Temperature Rise Across Blower = 88 degrees Celsius
Power Required to Drive Blower = 35 HP
Blower Speed = 16,000 RPM
LYS 1200AX
Temperature Rise Across Blower = 76 degrees Celsius
Power Required to Drive Blower = 32 HP
Blower Speed = 13,250 RPM
LYS 1600AX
Temperature Rise Across Blower = 75 degrees Celsius
Power Required to Drive Blower = 30 HP
Blower Speed = Unlisted on map. (Extrapolating from other AX serious compressors shows an approximation of 11,000 RPM)
Both the MP62 and the LYS 1200AX are maxed out at these operating conditions. Different operating point below:
Constants:
Flow Rate - 412.5 CFM ~ 275 HP
Pressure Ratio - 1.7 ~ 10 psi manifold boost pressure
MP62
Temperature Rise Across Blower = 85 degrees Celsius
Power Required to Drive Blower = 28 HP
Blower Speed = 13,000 RPM
LYS 1200AX
Temperature Rise Across Blower = 74 degrees Celsius
Power Required to Drive Blower = 23 HP
Blower Speed = 10,500 RPM
LYS 1600AX
Temperature Rise Across Blower = 73 degrees Celsius
Power Required to Drive Blower = 22 HP
Blower Speed = Unlisted on map. (Extrapolating from other AX serious compressors shows an approximation of 9,000 RPM)
Constants:
Flow Rate - 525 CFM ~ 350 HP
Pressure Ratio - 1.7 ~ 10 psi manifold boost pressure
MP62
Temperature Rise Across Blower = 88 degrees Celsius
Power Required to Drive Blower = 35 HP
Blower Speed = 16,000 RPM
LYS 1200AX
Temperature Rise Across Blower = 76 degrees Celsius
Power Required to Drive Blower = 32 HP
Blower Speed = 13,250 RPM
LYS 1600AX
Temperature Rise Across Blower = 75 degrees Celsius
Power Required to Drive Blower = 30 HP
Blower Speed = Unlisted on map. (Extrapolating from other AX serious compressors shows an approximation of 11,000 RPM)
Both the MP62 and the LYS 1200AX are maxed out at these operating conditions. Different operating point below:
Constants:
Flow Rate - 412.5 CFM ~ 275 HP
Pressure Ratio - 1.7 ~ 10 psi manifold boost pressure
MP62
Temperature Rise Across Blower = 85 degrees Celsius
Power Required to Drive Blower = 28 HP
Blower Speed = 13,000 RPM
LYS 1200AX
Temperature Rise Across Blower = 74 degrees Celsius
Power Required to Drive Blower = 23 HP
Blower Speed = 10,500 RPM
LYS 1600AX
Temperature Rise Across Blower = 73 degrees Celsius
Power Required to Drive Blower = 22 HP
Blower Speed = Unlisted on map. (Extrapolating from other AX serious compressors shows an approximation of 9,000 RPM)
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From: Mesa, AZ
You will definatly gain a considerable boost in performance with the twin screw. Its a far more efficient compressor. After looking at the specs of the W75AX (1200AX), I don't think it can support the power I want. Therefore I have decided on using either a Kenne Bell 2.1L supercharger, or a Whipple W140AX (2.3L). They are both conciderably larger than the 1200AX. The 2.1L KB can support up to 507 rwhp on a 4.6L V8, so I think it will more than meet the requirement of 600 whp for my little 4 banger.
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From: Calgary, Alberta
yea but is it raelly worth it to drop $3000 (estimated price of the twin screw) for the parts, then another say 3-4grand in supporting parts like cams axles pistons cooling mods etc.. just to get what 350 hp? buy a turbo kit for 1200 and you can get the same power, or get a bigger engine.
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From: Phoenix, AZ
yea but is it raelly worth it to drop $3000 (estimated price of the twin screw) for the parts, then another say 3-4grand in supporting parts like cams axles pistons cooling mods etc.. just to get what 350 hp? buy a turbo kit for 1200 and you can get the same power, or get a bigger engine.
And the cams we have seen are worthless, and that comes from experience with them.
I saw why not a full turbo build-up (heresy I know), or a centrifugal supercharger?
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From: South Carolina
i bet he was pushing 310-320 whp when he blew his **** , very impressive BUT not 350 WHP
Last edited by Red2.4SS/SC; May 28, 2007 at 07:04 PM. Reason: Automerged Doublepost
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From: United States
I agree with the first post.. its not going to be as significant as people think.. (it still will help.. but wont be the 350-400whp per initial claims without Nitrous)
but you want to drop 3k.. be my guest
but you want to drop 3k.. be my guest
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From: Phoenix, AZ
His car never made it to the dyno. I was just basing it off of his Interceptor, and by the obvious amount of power he was making. (videos of crazy runs somewhere on here)
Cameron> sorry for quoting your cars power when we know there is no way to prove it since you don't have a dyno run.
I too think the twinscrew will be a comprable waste of money, and when you see it come out yeveryone who was waiting will have either blown their motor on the stock blower, or decide to abandon or go turbo.
Cameron> sorry for quoting your cars power when we know there is no way to prove it since you don't have a dyno run.
I too think the twinscrew will be a comprable waste of money, and when you see it come out yeveryone who was waiting will have either blown their motor on the stock blower, or decide to abandon or go turbo.
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From: Houston, Tx
The MP62 is the 4th gen blower and creates slightly less parasitic drag and heat. It has a slightly higher max rpm and is better for higher boost. But, the M62 3rd gen like we have is equal to the MP62 at low rpm, low boost operation so it's efficient for a stock street car.
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From: United States
The MP62 is the 4th gen blower and creates slightly less parasitic drag and heat. It has a slightly higher max rpm and is better for higher boost. But, the M62 3rd gen like we have is equal to the MP62 at low rpm, low boost operation so it's efficient for a stock street car.
im sorry.. but you're wrong
our blower is a 5th gen and is more efficient than the previous generations plain and simple. Its rated max rpm is still the same too..
5th gen benefits low rpm boost over the previous generations.
Are there more efficient blowers out there than the M62.. yes.. but we have the most efficient M62 to date..
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From: Westchester, New York
my cousins bf told me today i can get more power and potential out of my roots style blower than a twinscrew, hes like a big time mechanic and car enthusiast and loves our cars, and yeah thats pretty much what he said, and i told him about our heat issuses and all of that
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my cousins bf told me today i can get more power and potential out of my roots style blower than a twinscrew, hes like a big time mechanic and car enthusiast and loves our cars, and yeah thats pretty much what he said, and i told him about our heat issuses and all of that
it has more to do with the specific supercharger. The twin screw Lysholm 1200AX will have more potential than the M62.. but the New TVS roots supercharger will have more potential than the Lysholm (given equal displacement units)
Your BF's cousin is probably thinking about top fuel racing and such.. Yes, those blowers can support alot of power.. but if you look at it in terms of Efficiency.. they are VERY poor.
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From: Westchester, New York
Totally depends....
it has more to do with the specific supercharger. The twin screw Lysholm 1200AX will have more potential than the M62.. but the New TVS roots supercharger will have more potential than the Lysholm (given equal displacement units)
Your BF's cousin is probably thinking about top fuel racing and such.. Yes, those blowers can support alot of power.. but if you look at it in terms of Efficiency.. they are VERY poor.
it has more to do with the specific supercharger. The twin screw Lysholm 1200AX will have more potential than the M62.. but the New TVS roots supercharger will have more potential than the Lysholm (given equal displacement units)
Your BF's cousin is probably thinking about top fuel racing and such.. Yes, those blowers can support alot of power.. but if you look at it in terms of Efficiency.. they are VERY poor.
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Thread Starter
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From: Maidstone, SK
No offense, but I'm trying to get the people to think before bitching at Mase again.
Twinscrews are great, but I think there is too much hype on the subject. People are wanting them without knowing the ins and outs of what makes them better, and how much better, and in what aspects of their design.
What I posted up here shows the twinscrew being only slightly more efficient, and that's not what people want to see. But look closer, and you see that the twinscrew has alot more spin left in it, where as the Eaton is spun out.
See when people think twinscrew they think power... they should be thinking efficient!
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From: Livonia, Michigan
yea but is it raelly worth it to drop $3000 (estimated price of the twin screw) for the parts, then another say 3-4grand in supporting parts like cams axles pistons cooling mods etc.. just to get what 350 hp? buy a turbo kit for 1200 and you can get the same power, or get a bigger engine.
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Joined: 04-03-06
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From: Mesa, AZ
Totally depends....
it has more to do with the specific supercharger. The twin screw Lysholm 1200AX will have more potential than the M62.. but the New TVS roots supercharger will have more potential than the Lysholm (given equal displacement units)
Your BF's cousin is probably thinking about top fuel racing and such.. Yes, those blowers can support alot of power.. but if you look at it in terms of Efficiency.. they are VERY poor.
it has more to do with the specific supercharger. The twin screw Lysholm 1200AX will have more potential than the M62.. but the New TVS roots supercharger will have more potential than the Lysholm (given equal displacement units)
Your BF's cousin is probably thinking about top fuel racing and such.. Yes, those blowers can support alot of power.. but if you look at it in terms of Efficiency.. they are VERY poor.
cause all its doin is heaton up the air
