And I hear that DDM builds some pretty dang strong engines also.
I have witnessed one First hand and IT IS BAD ASS !!!!!!!!!!!!!!!!!!!!! 
DDMWorks Supercharger Kit - Now more power Available
-
-
enough power that I was spinning third gear all the way up to 6000RPM yesterday
It just needs my fat ass to weigh it down.....
-
It just needs my fat ass to weigh it down.....
What size wheel and tire, and what type of tire are you using to get grip?
-
Display More
We have been very happy with the DDMWorks Rotrex supercharger kit and its performance, it makes the Slingshot a lot of fun. The compact supercharger unit has been very reliable and with a simple 1320 exhaust and header installed, we have been making around 280hp at the wheels with a nice flat torque curve, perfect for carving canyon roads or blasting down the interstate. Even though customers have been happy with that power, we always want to keep pushing the power and so we are happy to offer another tested pulley option to our customers. The new pulley is slightly smaller, spinning the supercharger a little faster and bumping power another 25hp at the wheels, while also elevating the entire torque curve at the same time, the result is 305hp at the rear wheel, enough power that I was spinning third gear all the way up to 6000RPM yesterday
Have any other questions? Just let us know, we are always happy to answer them.
More information on the kit can be found here - DDMWorks Slingshot Rotrex Supercharger Kit
For those that want to see how we actually made the extra power, here is an exclusive sneak peak for Slingshotinfo forum members only! -
-
-
LET THE DERAIL BEGIN!!!
-
Supercharged donut...
-
Supercharged donut...
-
Did someone say donuts ...
-
YUMMMMMMMMM. All day tomorrow at prices you'll never see anywhere else
-
Does altitude make a difference in which I should choose. Turbo vs Supercharger??? I live at 5,400 ft and regularly ride to 10,000 ft. Is one option better than the other.
-
What size wheel and tire, and what type of tire are you using to get grip?
size 56" belt gets you all kinds of grip....
-
size 56" belt gets you all kinds of grip....
-
As a kid, I had a donut route. Twice a week, I would receive a delivery of about 15-20 dozen donuts in 1/2 dozen boxes. I carried them door-to-door until I sold out. Some regular customers always bought the same thing and I always eventually sold all the donuts. I bought them for 25 cents per 1/2 dozen box and sold them for 32 cents. A yeast-raised, chocolate glazed donut was one of my best sellers. I walked my tail off and was glad my Mom would at least drop me off at the start of my route. The only trouble was as soon as I sold five boxes, I bought a box for myself!
I enjoyed that donut route much more than I ever did my newspaper route. I delivered a weekly paper to approximately 2000 houses in my subdivision. It usually took me and my brother and sister two days after school to get them all delivered. Even after splitting earnings with my siblings, I felt rich making $6-7 a week. When you figured how long it took to deliver all of the newspapers, we were making far less than minimum wage during the mid-1960s, but at least we had some spending money. -
Does altitude make a difference in which I should choose. Turbo vs Supercharger??? I live at 5,400 ft and regularly ride to 10,000 ft. Is one option better than the other.
I'm going to take a stab at this answer.
Its fuel injected and has a 2bar MAP sensor so it should stay very close to the perfect fuel to air ratio no matter where you travel. Either one will work just fine.
-
IIRC, there is a post over on the other site reporting that during a turbo installation, some of the factory head bolts were discovered to have not been properly torqued, meaning that the engine could have self-destructed due to what would have been very unlikely to have been discovered after the fact.
Here's a link - Attention Turbo Users. You might want to check this. | Polaris Slingshot Forum -
I would love to have one installed down in Texas in April, just gotta get the cash.
-
I watched mine being installed. The kit is really laid out well and would not be to difficult to install yourself. Everything with the exception of the air temperature sensor is direct bolt on. I have a couple of friends who are considering buying the kit, if they do I will install it with them.
-
IIRC, there is a post over on the other site reporting that during a turbo installation, some of the factory head bolts were discovered to have not been properly torqued, meaning that the engine could have self-destructed due to what would have been very unlikely to have been discovered after the fact.Here's a link - Attention Turbo Users. You might want to check this. | Polaris Slingshot Forum
Do you know how it was determined that the head bolts were not torqued properly? There is no set torque value for the stock head bolts, the torque in that manual that was posted in that thread is 22 ft/lbs + 155 degrees, there is no way to check if the 155 degrees was completed, unless they were just completely loose, which is what it kinda sounds like in that thread. That type of torque rating is a very common thing with GM engines, they will list the torque as X ft/lbs plus an additional rotation of X degrees on most of their torque to yield fasteners. If you want to be able to check the torque, there are simple tools that you can buy to be able to measure the degrees after you reach the base torque, the look like this -
You can pick cheap ones up on Ebay, Amazon, etcSo far, we have not noticed any loose head bolts on any engines we have taken apart for engine builds here, but something that we will check from now on and if we start to see any patterns with it, definitely will let people know on all the forums and get that information out.
-
Well since you kicked your supercharger up a notch I guess it's only fair for me to kick the turbo up two notches.
Running the green spring now. Going to skip green and natural colored spring and go on to green and yellow.
This will either be EPIC or an EPIC FAIL..
But I was always told to go big or go home. So what the heck. Let's give it a shot.
This is the Hahn X2 8.5 PSI red and natural combo sitting beside what im about to install. Remember the way Hahn routes the vacuum line we get 1.5 to 2 PSI more than the spring rates are..
