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Old 09-26-2011, 01:28 PM   #1
Roman nj.
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MP112 vs. TVS1900

What is the difference in these two suoerchargers beside the money? They are only like $200. apart.
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Old 09-26-2011, 02:15 PM   #2
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.1L, and a lot of efficiency in the 1900. the TVS series is the newest rotor design, and is a lot more efficient than the 5th generation M series
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Old 09-26-2011, 02:22 PM   #3
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There is to much to list.

The TVS is more efficient in power and lower combustion temps.
The rotors are different
The cases are larger
The hubs are redesigned
The jackshaft is updated

Much more to list, the TVS1900 is easily worth that $200. The TVS is more comparable to a early Whipple than it is an Eaton.
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Old 09-26-2011, 02:26 PM   #4
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Sounds like a no brainer. The mp112 should be alot cheaper.
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Old 09-26-2011, 02:45 PM   #5
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I wouldnt waste my time with a 112 unless you have modest power goals and/or find a good deal on one
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Old 09-26-2011, 02:49 PM   #6
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and they quit making them
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Old 09-26-2011, 04:29 PM   #7
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Now, if you could get a 122 for the price of a 1900...
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Old 09-26-2011, 05:02 PM   #8
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Quote:
Originally Posted by aicdan2000...View Post
Now, if you could get a 122 for the price of a 1900...

You should still get a 1900.
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Old 09-26-2011, 05:28 PM   #9
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Originally Posted by aicdan2000...View Post
Now, if you could get a 122 for the price of a 1900...

I can get you a 122 for a good bit cheaper than the 1900 ,call me if you need one
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Old 09-26-2011, 06:28 PM   #10
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I just changed to a 1900 from a 112. I'll sell you the 112 with 6k miles on it, two pulleys and a near new install kit. I reused most everything that was already installed since it's the same. $3200 for all.
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Old 09-26-2011, 09:53 PM   #11
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Originally Posted by Wildbill040...View Post
I just changed to a 1900 from a 112. I'll sell you the 112 with 6k miles on it, two pulleys and a near new install kit. I reused most everything that was already installed since it's the same. $3200 for all.

OK, but how about offering your review and comparison of the two different blowers since you've had them both, and since that's really what this thread is all about. I've had both, but it's tough for me to offer a comparison review since I had the M112 on a smaller engine (it was a 4.6L motor) than my TVS 1900 is (which is on my 6.0L GTO engine). The only thing I can tell you is that the TVS is a bit more quiet than the M112 was (less whine, although the M112 wasn't really loud either).
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Old 09-26-2011, 09:59 PM   #12
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Originally Posted by Roman nj....View Post
What is the difference in these two suoerchargers beside the money? They are only like $200. apart.

It's first and foremost a difference in the internals. For instance: the TVS has four lobe rotors, which have a 180 degree helical twist, but the M112 blowers had the 3 lobe rotors with a 60 degree helical twist. Eaton's/Magnuson's claim is that the 4 lobe rotor design with the 180 helical twist is more efficient in making power than their previous three lobe deisgn was. BTW, keep in mind that Eaton is the OE branch and Magnuson is the aftermarket branch. Whipple is a whole different company all together.
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Old 09-26-2011, 10:14 PM   #13
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Originally Posted by BillyGman...View Post
It's first and foremost a difference in the internals. For instance: the TVS has four lobe rotors, which have a 180 degree helical twist, but the M112 blowers had the 3 lobe rotors with a 60 degree helical twist. Eaton's/Magnuson's claim is that the 4 lobe rotor design with the 180 helical twist is more efficient in making power than their previous three lobe deisgn was. BTW, keep in mind that Eaton is the OE branch and Magnuson is the aftermarket branch. Whipple is a whole different company all together.

Lysholm was a partner with Eaton until Vortech bought them out.

Guess who manufactured Whipple superchargers until they started building in house a few years ago?
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Old 09-26-2011, 10:37 PM   #14
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Originally Posted by ArthurJGuy...View Post
Lysholm was a partner with Eaton until Vortech bought them out.

Guess who manufactured Whipple superchargers until they started building in house a few years ago?

The Lysholm units were the twin screw ones, right? I believe that Autorotor was also once a part of Lysholm too, but they broke off on their own. But Lysholm made some of the Whipple units, as you've implied. Wasn't meaning to debate with you Art, I just think that a number of guys here don't realize that Eaton superchargers are Magnuson, but Magnuson is merely the aftermarket division of Eaton. You have to be a big business like a car manufacture or an engineering company to do business directly with Eaton, but Magnuson is their division which does biz with guys like us. I just wanted to point that out to the O.P.
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Old 09-26-2011, 10:38 PM   #15
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The Lysholm units were the twin screw ones, right? I believe that Autorotor was also once a part of Lysholm too, but they broke off on their own. But Lysholm made some of the Whipple units, as you've implied. Wasn't meaning to debate with you Art, I just think that a number of guys here don't realize that Eaton superchargers are Magnuson, but Magnuson is merely the aftermarket division of Eaton. You have to be a big business like a car manufacture or an engineering company to do business directly with Eaton, but Magnuson is their division which does biz with guys like us. I just wanted to point that out to the O.P.

Word
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Old 09-26-2011, 10:40 PM   #16
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Ok, here's some of the similarities and differences: the 112 is slightly smaller and less efficient at around 70%, it is noisier but not by much. It spools quick to about 4 psi, then its a steady hard pull to 10 psi. It runs hot IAT's of around 120 to 160 causing fuel and timing to be pulled out. The green tops injectors mine came with don't have scaling data for them. You can't start tuning without injectors you cant. I sent ls1 to Jeremy fortuto who reflowed them to 42lbs and balanced them. Because of the IAT placement in the head over the top of #8 to heat soak we could only make 2 pull on the dyno then had to let it cool. Street driving with it was fine unless you were in a jam idling the temps climbed very high making it stall. I added meth into the mix. Dropped temps 10-20 but not far enough. I'm in Alaska where temps average 60 degrees and still have high temps.
After installing the 1900 one of the first changes you'll see is the IAT placement. Instead of pushed into the blower manifold hole, it was moved inside of the manifold on a stand next to the cooler. The drive system is quieter, rear pulleys are 8 rib instead of six on the 112. The ls9 injectors are very short, I was going to reuse my 42s but they won't fit the rails, nor will the rails from the 112. I had to buy adaptors to use the ls9's after all, plus find new scaling data for them. There were a few minor changes that were easy to workout. The coolant lines to the 112 go in one side and out the opposite where the 1900 are on the same side. Because my new kit was for the 05-06 ls2 fly by wire and mine is a throttle cable, the vacuum port was in the way of the bell crank of the fitting. So I removed it and TEE'd it onto a left side port. I ordered a cable mount which turned out to be a piece of junk that wouldn't fit right and hit the hood, so I made my own.
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Old 09-26-2011, 10:54 PM   #17
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Started retuning for this blower and injectors which wasn't bad at all. The iat's are around 85 and the ect's dropped to 180s from 220. Some of the high ECT were from a bad Tstat too. We've 1 and 2 bar SD tuned and maf tuned with an 85 mm ( tried 3 different ones ) that all were maxed by 5000 rpm. I was seeing 104% efficientcy out of boost. Tried it next to the filter, mid pipe and at the TB. Threw codes except when at the filter head.
Non-Sponsor told me he uses a blade Maf with one table in a 100mm. I think were talking about the same maf though. I call it a cartridge and he a blade.
There must be a cartridge Maf that uses one table.
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Old 09-27-2011, 01:33 AM   #18
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M112/122= heaton
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Old 09-27-2011, 02:22 AM   #19
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Quote:
Originally Posted by BillyGman...View Post
The Lysholm units were the twin screw ones, right? I believe that Autorotor was also once a part of Lysholm too, but they broke off on their own. But Lysholm made some of the Whipple units, as you've implied. Wasn't meaning to debate with you Art, I just think that a number of guys here don't realize that Eaton superchargers are Magnuson, but Magnuson is merely the aftermarket division of Eaton. You have to be a big business like a car manufacture or an engineering company to do business directly with Eaton, but Magnuson is their division which does biz with guys like us. I just wanted to point that out to the O.P.

arent they more like a separate OEM company that sources blower guts from eaton, in the same way harrop does? opposed to just a division of eaton? I was under the impression they are completely separate company from eaton, and just have a partnership and/or contract, and make their own housings, kits, etc.

Last edited by HunterKiller89; 09-27-2011 at 02:24 AM.
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Old 09-27-2011, 06:51 AM   #20
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One little correction WildBill. M-series blowers use 8-rib rear drive. TVS-series use 10-rib rear drive.

Good info on the differences here.
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Old 09-27-2011, 06:55 AM   #21
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Magnuson Products is privately owned, not by Eaton. Jerry Magnuson did own the company until late last year when he retired.
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Old 09-27-2011, 04:42 PM   #22
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Quote:
Originally Posted by aicdan2000...View Post
Now, if you could get a 122 for the price of a 1900...



I still would not do it......1900>M122
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Old 10-07-2011, 06:46 PM   #23
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Where can you get the 1900 with only $200 more than the 112? (I'm hoping you found a good price for the 1900, and not a place that sells an overpriced 112 haha)
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Old 10-07-2011, 07:25 PM   #24
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I can get you a 122 for a good bit cheaper than the 1900 ,call me if you need one

What can you get a 1900 for?
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Old 10-07-2011, 07:32 PM   #25
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the TVS 1900 is what is used in the CTV caddy and the new ZL1 Camaro..
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Old 10-08-2011, 06:51 AM   #26
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No CARB compliance with 1900 or above
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Old 10-08-2011, 07:07 AM   #27
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I still would not do it......1900>M122

Meh the M122 makes a sexier sound
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Old 10-17-2011, 04:45 PM   #28
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ive got a 112 and wish I had the TVS1900 instead!!
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Old 10-17-2011, 05:37 PM   #29
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Eaton makes the rotors, and internals. They then sell them to OE's like GM who use them in the ZR1, or Ford in the GT500. Magnusun basically had the exclusive contract with Eaton to sell their superchargers for aftermarket use. Eaton supplied the rotors and internals, and Magnusun did the case. At some point, Magnusnun lost the exclusive, which is why you see companies like Edlebrock coming out with the E-force supercharger, which uses the same Eaton internals basically upside down with different case and runners. It's kind of like a laptop..everyone takes the same basic motherboard, specs it out like they want, and then puts their name and case on it.

For $200 on a $6K transaction, I would not mess with the 112. It is old tech. IMO nothing sounds better than a 1900 or 2300 witha cog drive
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