Cheap supercharger kit: Part II
#1
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Heres a project Ive been working on for quite a while
Eaton M122 off a 2009 Shelby GT500 on a LSx engine
Some of you may remember my last build using an older M90 on a 5.3 which netted about 60hp over stock. The instant torque was fun but it just needed a little more
![Name: DSC02042.jpg
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Size: 185.8 KB](https://ls1tech.com/forums/attachments/forced-induction/615855d1501348200-cheap-supercharger-kit-part-ii-dsc02042.jpg)
Comparison
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Size: 64.9 KB](https://ls1tech.com/forums/attachments/forced-induction/615856d1501348200-cheap-supercharger-kit-part-ii-dsc02081.jpg)
![Name: DSC02082.jpg
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Size: 73.0 KB](https://ls1tech.com/forums/attachments/forced-induction/615857d1501348200-cheap-supercharger-kit-part-ii-dsc02082.jpg)
Basic fitment
![Name: DSC02091.jpg
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Size: 161.2 KB](https://ls1tech.com/forums/attachments/forced-induction/615858d1501348200-cheap-supercharger-kit-part-ii-dsc02091.jpg)
Cutting a base plate from 1/4" steel
![Name: DSC02105.jpg
Views: 16576
Size: 61.6 KB](https://ls1tech.com/forums/attachments/forced-induction/615859d1501348200-cheap-supercharger-kit-part-ii-dsc02105.jpg)
Designing a tight fitting balancer hub and stand off to use common parts. 6 rib accessory drive remains the same with a generic SBC 10 rib crank pulley as close to the block as possible
![Name: crankhubassy3.png
Views: 15494
Size: 71.7 KB](https://ls1tech.com/forums/attachments/forced-induction/615860d1501348200-cheap-supercharger-kit-part-ii-crankhubassy3.png)
Rough model to gauge fitment. It was later amended to move the front plate up one bolt hole and add a second plate to hold and idler to clear the water pump bell. Tensioner is the standard that come with truck maggy kits that most guys upgrade. Its actually a diesel part. Pulley was swapped for a procharger smooth idler wide enough for my belt
![Name: blowerassy4.png
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Size: 50.4 KB](https://ls1tech.com/forums/attachments/forced-induction/615861d1501348200-cheap-supercharger-kit-part-ii-blowerassy4.png)
![Name: blowerassy5.png
Views: 15444
Size: 89.3 KB](https://ls1tech.com/forums/attachments/forced-induction/615862d1501348200-cheap-supercharger-kit-part-ii-blowerassy5.png)
Balancer hub came back from the machine shop. Hub is 4130 while the centering ring and stand off are aluminum
![Name: DSC02166.jpg
Views: 15550
Size: 71.6 KB](https://ls1tech.com/forums/attachments/forced-induction/615863d1501348200-cheap-supercharger-kit-part-ii-dsc02166.jpg)
![Name: DSC02167.jpg
Views: 15572
Size: 97.1 KB](https://ls1tech.com/forums/attachments/forced-induction/615864d1501348200-cheap-supercharger-kit-part-ii-dsc02167.jpg)
Building the brackets, keeping everything true
![Name: DSC02194.jpg
Views: 15563
Size: 105.6 KB](https://ls1tech.com/forums/attachments/forced-induction/615865d1501348200-cheap-supercharger-kit-part-ii-dsc02194.jpg)
Rear brace. Those bolt holes in the cyl heads are sure handy
![Name: DSC02197.jpg
Views: 15741
Size: 72.3 KB](https://ls1tech.com/forums/attachments/forced-induction/615866d1501348200-cheap-supercharger-kit-part-ii-dsc02197.jpg)
Building the collector hat. The tube running towards the rear connects the bypass butterfly to the charge pipe so the stock actuator can be used. The external unit for the M90 was a pain
![Name: DSC02205.jpg
Views: 15766
Size: 93.8 KB](https://ls1tech.com/forums/attachments/forced-induction/615867d1501348200-cheap-supercharger-kit-part-ii-dsc02205.jpg)
![Name: DSC02206.jpg
Views: 15545
Size: 94.5 KB](https://ls1tech.com/forums/attachments/forced-induction/615868d1501348200-cheap-supercharger-kit-part-ii-dsc02206.jpg)
Beginning the front plates checking belt alignment. From the last build I found that a serp belt can handle about .030" and .5* of misalignment before it will throw and/or chew a belt. Since this belt is about $60, thats a bit expensive to tweak afterwards. Had to be dead on from the start this time
![Name: DSC02249.jpg
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Size: 78.5 KB](https://ls1tech.com/forums/attachments/forced-induction/615869d1501348200-cheap-supercharger-kit-part-ii-dsc02249.jpg)
![Name: DSC02250.jpg
Views: 15639
Size: 68.8 KB](https://ls1tech.com/forums/attachments/forced-induction/615870d1501348200-cheap-supercharger-kit-part-ii-dsc02250.jpg)
How much room I have to work with
![Name: DSC02073.jpg
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Size: 71.7 KB](https://ls1tech.com/forums/attachments/forced-induction/615871d1501348200-cheap-supercharger-kit-part-ii-dsc02073.jpg)
Plates finished and HD belt installed
![Name: DSC02271.jpg
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![Name: DSC02272.jpg
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Decent sized inlet
![Name: DSC02273.jpg
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Size: 53.3 KB](https://ls1tech.com/forums/attachments/forced-induction/615874d1501348200-cheap-supercharger-kit-part-ii-dsc02273.jpg)
And its in there
![Name: DSC02399.jpg
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Size: 80.5 KB](https://ls1tech.com/forums/attachments/forced-induction/615875d1501348200-cheap-supercharger-kit-part-ii-dsc02399.jpg)
![Name: DSC02434.jpg
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Size: 137.7 KB](https://ls1tech.com/forums/attachments/forced-induction/615876d1501348200-cheap-supercharger-kit-part-ii-dsc02434.jpg)
Had to notch a plate for hood clearance, thats about 5/8"
![](http://i150.photobucket.com/albums/s98/Pocket_004/LS1%20M122%20project/DSC02451.jpg)
Ford 8.8 conversion, calipers were painted later. Not sure whats up with the yellow
![Name: DSC02628.jpg
Views: 15454
Size: 174.9 KB](https://ls1tech.com/forums/attachments/forced-induction/615877d1501348200-cheap-supercharger-kit-part-ii-dsc02628.jpg)
Fuel system
![Name: 340returnfuelsystemfinal.png
Views: 15533
Size: 35.1 KB](https://ls1tech.com/forums/attachments/forced-induction/615878d1501348200-cheap-supercharger-kit-part-ii-340returnfuelsystemfinal.png)
And thats about it
![Name: DSC02677.jpg
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Size: 161.5 KB](https://ls1tech.com/forums/attachments/forced-induction/615879d1501348200-cheap-supercharger-kit-part-ii-dsc02677.jpg)
![Name: DSC02676.jpg
Views: 15615
Size: 168.5 KB](https://ls1tech.com/forums/attachments/forced-induction/615880d1501348200-cheap-supercharger-kit-part-ii-dsc02676.jpg)
Rolling into the throttle from a stop. Long 1st and 2nd from the 80E. Boost comes in approx 40%
![](http://i150.photobucket.com/albums/s98/Pocket_004/LS1%20M122%20project/th_MOV02674.jpg)
Hammering it from around 35
Eaton M122 off a 2009 Shelby GT500 on a LSx engine
Some of you may remember my last build using an older M90 on a 5.3 which netted about 60hp over stock. The instant torque was fun but it just needed a little more
![Name: DSC02042.jpg
Views: 20360
Size: 185.8 KB](https://ls1tech.com/forums/attachments/forced-induction/615855d1501348200-cheap-supercharger-kit-part-ii-dsc02042.jpg)
Comparison
![Name: DSC02081.jpg
Views: 17078
Size: 64.9 KB](https://ls1tech.com/forums/attachments/forced-induction/615856d1501348200-cheap-supercharger-kit-part-ii-dsc02081.jpg)
![Name: DSC02082.jpg
Views: 15844
Size: 73.0 KB](https://ls1tech.com/forums/attachments/forced-induction/615857d1501348200-cheap-supercharger-kit-part-ii-dsc02082.jpg)
Basic fitment
![Name: DSC02091.jpg
Views: 25559
Size: 161.2 KB](https://ls1tech.com/forums/attachments/forced-induction/615858d1501348200-cheap-supercharger-kit-part-ii-dsc02091.jpg)
Cutting a base plate from 1/4" steel
![Name: DSC02105.jpg
Views: 16576
Size: 61.6 KB](https://ls1tech.com/forums/attachments/forced-induction/615859d1501348200-cheap-supercharger-kit-part-ii-dsc02105.jpg)
Designing a tight fitting balancer hub and stand off to use common parts. 6 rib accessory drive remains the same with a generic SBC 10 rib crank pulley as close to the block as possible
![Name: crankhubassy3.png
Views: 15494
Size: 71.7 KB](https://ls1tech.com/forums/attachments/forced-induction/615860d1501348200-cheap-supercharger-kit-part-ii-crankhubassy3.png)
Rough model to gauge fitment. It was later amended to move the front plate up one bolt hole and add a second plate to hold and idler to clear the water pump bell. Tensioner is the standard that come with truck maggy kits that most guys upgrade. Its actually a diesel part. Pulley was swapped for a procharger smooth idler wide enough for my belt
![Name: blowerassy4.png
Views: 15366
Size: 50.4 KB](https://ls1tech.com/forums/attachments/forced-induction/615861d1501348200-cheap-supercharger-kit-part-ii-blowerassy4.png)
![Name: blowerassy5.png
Views: 15444
Size: 89.3 KB](https://ls1tech.com/forums/attachments/forced-induction/615862d1501348200-cheap-supercharger-kit-part-ii-blowerassy5.png)
Balancer hub came back from the machine shop. Hub is 4130 while the centering ring and stand off are aluminum
![Name: DSC02166.jpg
Views: 15550
Size: 71.6 KB](https://ls1tech.com/forums/attachments/forced-induction/615863d1501348200-cheap-supercharger-kit-part-ii-dsc02166.jpg)
![Name: DSC02167.jpg
Views: 15572
Size: 97.1 KB](https://ls1tech.com/forums/attachments/forced-induction/615864d1501348200-cheap-supercharger-kit-part-ii-dsc02167.jpg)
Building the brackets, keeping everything true
![Name: DSC02194.jpg
Views: 15563
Size: 105.6 KB](https://ls1tech.com/forums/attachments/forced-induction/615865d1501348200-cheap-supercharger-kit-part-ii-dsc02194.jpg)
Rear brace. Those bolt holes in the cyl heads are sure handy
![Name: DSC02197.jpg
Views: 15741
Size: 72.3 KB](https://ls1tech.com/forums/attachments/forced-induction/615866d1501348200-cheap-supercharger-kit-part-ii-dsc02197.jpg)
Building the collector hat. The tube running towards the rear connects the bypass butterfly to the charge pipe so the stock actuator can be used. The external unit for the M90 was a pain
![Name: DSC02205.jpg
Views: 15766
Size: 93.8 KB](https://ls1tech.com/forums/attachments/forced-induction/615867d1501348200-cheap-supercharger-kit-part-ii-dsc02205.jpg)
![Name: DSC02206.jpg
Views: 15545
Size: 94.5 KB](https://ls1tech.com/forums/attachments/forced-induction/615868d1501348200-cheap-supercharger-kit-part-ii-dsc02206.jpg)
Beginning the front plates checking belt alignment. From the last build I found that a serp belt can handle about .030" and .5* of misalignment before it will throw and/or chew a belt. Since this belt is about $60, thats a bit expensive to tweak afterwards. Had to be dead on from the start this time
![Name: DSC02249.jpg
Views: 15648
Size: 78.5 KB](https://ls1tech.com/forums/attachments/forced-induction/615869d1501348200-cheap-supercharger-kit-part-ii-dsc02249.jpg)
![Name: DSC02250.jpg
Views: 15639
Size: 68.8 KB](https://ls1tech.com/forums/attachments/forced-induction/615870d1501348200-cheap-supercharger-kit-part-ii-dsc02250.jpg)
How much room I have to work with
![Name: DSC02073.jpg
Views: 15365
Size: 71.7 KB](https://ls1tech.com/forums/attachments/forced-induction/615871d1501348200-cheap-supercharger-kit-part-ii-dsc02073.jpg)
Plates finished and HD belt installed
![Name: DSC02271.jpg
Views: 15500
Size: 92.2 KB](https://ls1tech.com/forums/attachments/forced-induction/615872d1501348200-cheap-supercharger-kit-part-ii-dsc02271.jpg)
![Name: DSC02272.jpg
Views: 15827
Size: 123.4 KB](https://ls1tech.com/forums/attachments/forced-induction/615873d1501348200-cheap-supercharger-kit-part-ii-dsc02272.jpg)
Decent sized inlet
![Name: DSC02273.jpg
Views: 15282
Size: 53.3 KB](https://ls1tech.com/forums/attachments/forced-induction/615874d1501348200-cheap-supercharger-kit-part-ii-dsc02273.jpg)
And its in there
![Name: DSC02399.jpg
Views: 15677
Size: 80.5 KB](https://ls1tech.com/forums/attachments/forced-induction/615875d1501348200-cheap-supercharger-kit-part-ii-dsc02399.jpg)
![Name: DSC02434.jpg
Views: 15492
Size: 137.7 KB](https://ls1tech.com/forums/attachments/forced-induction/615876d1501348200-cheap-supercharger-kit-part-ii-dsc02434.jpg)
Had to notch a plate for hood clearance, thats about 5/8"
![](http://i150.photobucket.com/albums/s98/Pocket_004/LS1%20M122%20project/DSC02451.jpg)
Ford 8.8 conversion, calipers were painted later. Not sure whats up with the yellow
![Name: DSC02628.jpg
Views: 15454
Size: 174.9 KB](https://ls1tech.com/forums/attachments/forced-induction/615877d1501348200-cheap-supercharger-kit-part-ii-dsc02628.jpg)
Fuel system
![Name: 340returnfuelsystemfinal.png
Views: 15533
Size: 35.1 KB](https://ls1tech.com/forums/attachments/forced-induction/615878d1501348200-cheap-supercharger-kit-part-ii-340returnfuelsystemfinal.png)
And thats about it
![Name: DSC02677.jpg
Views: 19995
Size: 161.5 KB](https://ls1tech.com/forums/attachments/forced-induction/615879d1501348200-cheap-supercharger-kit-part-ii-dsc02677.jpg)
![Name: DSC02676.jpg
Views: 15615
Size: 168.5 KB](https://ls1tech.com/forums/attachments/forced-induction/615880d1501348200-cheap-supercharger-kit-part-ii-dsc02676.jpg)
Rolling into the throttle from a stop. Long 1st and 2nd from the 80E. Boost comes in approx 40%
![](http://i150.photobucket.com/albums/s98/Pocket_004/LS1%20M122%20project/th_MOV02674.jpg)
Hammering it from around 35
![](http://i150.photobucket.com/albums/s98/Pocket_004/LS1%20M122%20project/th_MOV02675.jpg)
#7
TECH Junkie
iTrader: (18)
Join Date: Aug 2005
Location: Amsterdam Ny, the good part
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that speedo is way off , and why does it sound like a fire horn , cobras dont sound like that when off throttle .
and sorry for those questions , awesome workmanship .
and sorry for those questions , awesome workmanship .
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#12
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Sick build man! I'm guessing you do engineering work?
that speedo is way off , and why does it sound like a fire horn , cobras dont sound like that when off throttle .
and sorry for those questions , awesome workmanship .
and sorry for those questions , awesome workmanship .
Whine is from the TB behind down stream from the blower. 99% of roots setups are at the inlet, so you almost never hear this until one is mounted remote like this. If I moved it to the inlet it'd sound just like a cobra
#16
TECH Senior Member
iTrader: (25)
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Nice work, but you have one problem with it and I even heard it in your vids. The belt tensioner is on the wrong side of the belt load. It should be on the slack side, not the tension side. So as you put a load on it, its pulling the belt strait and slacking the back side slipping the belt and then you let off the gas and you can hear the belt squeal as it speeds up the blower.
#18
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Nice work, but you have one problem with it and I even heard it in your vids. The belt tensioner is on the wrong side of the belt load. It should be on the slack side, not the tension side. So as you put a load on it, its pulling the belt strait and slacking the back side slipping the belt and then you let off the gas and you can hear the belt squeal as it speeds up the blower.