supercharged mag 3.5

[Greg095]

Originally Posted by 3.57MagnuM

Under 10 pounds of boost you can normally get away with the stock injectors as long as you upgrade the pump.

Even the stock cams are more than enough at under 10 pounds.

Another thing to consider is your stock compression ratio.

3.5 engines come in at 10.1. This means you can safely run 5 pounds of boost on stock internals and upgrading the fuel pump. 7 pounds is possible as long as you or someone you know can tune it properly. This is possible now since the diablo tuner has been released for the 3.5 engines.

My brother has been wanting to make a turbo system for my 3.5 but I always tell him the same thing, unless someone makes lower comp pistons or we get our own forged, I'm not even gonna try it if I'm gonna max out at 7. I'd rather max at 9 or 10. Every pound helps in a turbo.

I looked at the supercharger kit by tkt. I forgot who did it, but the last time I read he maxed out at 3.xx psi. This is a very low gain in my opinion as you still have to overcome the parasitic loss of the belt on the pulley system.

At 5 or 7 pounds of boost on the 3.5 with stock internals, the best setup I can think of is a sequential twin turbo. This allows you to boost at low rpms increasing torque and then having a second turbo take over at higher rpms increasing top end.

But even that runs up the numbers as you have to buy two turbos over one as well as two wastegates and all other parts needed.

Bottom line is the safer and best bet would be to get a turbo system, nothing belt driven. Anything belt driven (classified as supercharger) has substantial parasitic loss and simply hurts you in the long run for power. But until we get at least some lower comp pistons, we will be stuck at 7 pounds max safely.

I'm not gonna pretend that I understood anything more than about 25% of what you just said. LOL

To me, I agree, the more the better, and I wanna see numbers. But the kit from Mopar SuperCenter states it comes with another injector. Is this so there is potential for more power down the road?

[3.57MagnuM]

Originally Posted by Greg095

I'm not gonna pretend that I understood anything more than about 25% of what you just said. LOL

To me, I agree, the more the better, and I wanna see numbers. But the kit from Mopar SuperCenter states it comes with another injector. Is this so there is potential for more power down the road?

The extra injector is to supply the extra fuel needed at boost levels.

Again, with a turbo on stock internals and under 10 pounds, you can get away with using the stock injectors with an upgraded fuel pump provided the engine and turbo are tuned right.

You can always just upgrade the injectors themselves for your peace of mind, but for the 3.5 it still comes down to availability of parts. I haven't seen any replacement injectors for the 3.5 because honestly there isn't a big demand for replacements higher than oem standards on our engine, at the moment we are short in that department.

Here's a little random information. With a single remote turbo, the fact the turbo is located close to the end of the exhaust pipe, the intake charge carried back to the front of the engine can drop to about 50 above ambient. What this means is that if your lucky enough, you won't really need an intercooler. Also another note, because the turbo is located at the end of the exhuast as opposed to using a downpipe, you can actually keep your existing exhaust system in terms of size of pipe. Stock or aftermarket. You would just have to modify it a bit to accept the turbo.

[Knightrider]

correct me if i am wrong but isnt that called a centripical supercharger (or something like that) rather than a belt drive turbo?

[Cujofreak]

I WANT I WANT!!!!!!!!

That's crazy

[3.57MagnuM]

Originally Posted by Knightrider

correct me if i am wrong but isnt that called a centripical supercharger (or something like that) rather than a belt drive turbo?

Correct.

Centrifugal superchargers use an impellar and roots and twin-screw superchargers use meshing lobes to compress the air.

If you wanted to be technically correct, all superchargers are initially turbo chargers, with the difference in being how they are driven.

Turbos use the exhaust gas stream and supers use belts and pulleys.

The inner workings of the supercharger determine the type it is.

[hbmagnum]

hmmm..so from reading what everyone is writing here..im getting that the effort doesnt equal the reward.. Does anyone actually have a supercharger setup..or a turbo set up in their 3.5 yet?..That would be helpful in determining the real horsepower/performance gains..theres another link with a guy who has installed a supercharger in his 3.5 and claims near 6 boost..seems to me the 3.5 has a lot of potential in the power to weight ratio

here's a link for a supercharged mag

MySpace.com - DODGE MAGNUM SUPERCHARGED (DISTRIBUTION ONLY) - 42 - Male - HENDERSON, Nevada - www.myspace.com/tirerimwrap

[3.57MagnuM]

A supercharger on our 3.5's would not equal the reward.

BUT, drop the compression ratio in the 3.5 and then add a turbo and the gains would be higher than that of a supercharger.

Always remember the supercharger introduces parasitic loss.

You would have to overcome the fact that the new power the supercharger helps to produce is being reduced because of the fact that the engine needs a certain amount of power to turn the supercharger.

The turbo uses the existing exhaust gas stream velocity to turn the impellar.

For the 3.5, turbo would be the better option of the two but to make it really worth the effort, we need to overcome the compression ratio.

If we can get it down to 8 or 9, we can safely run up to 10 pounds of boost on majority stock internals (the pistons would have to be changed to yield a lower compression ratio) and produce a higher hp/tq result over a supercharger with the same situation.

[Knightrider]

Originally Posted by 3.57MagnuM

Correct.

Centrifugal superchargers use an impellar and roots and twin-screw superchargers use meshing lobes to compress the air.

If you wanted to be technically correct, all superchargers are initially turbo chargers, with the difference in being how they are driven.

Turbos use the exhaust gas stream and supers use belts and pulleys.

The inner workings of the supercharger determine the type it is.

centripical, centrifugal i knew it was one of those LOL

[gomojo31]

by all means to each their own, but tryin to make an SXT fast just seems like a lost cause to me....jmo on that

[Chutsk10]

Originally Posted by Forcedfed

Pretty slick.. do they ever say what kind of Hp gains it made?

Well right from the product description of the TKT product it states

"These kits are set up to produce a very safe and moderate 4.5 PSI and 65 HP at the rear wheels."

Not sure how credible that is though.


Someone over on the LX forum put this kit in a Charger I think . . . But I can't seem to find the thread at the moment.