I've picked up an Xterra/ Frontier Supercharger (thanks torgdor). Still have a Eaton m62 for a 3.8 V6. The Nissan Eaton is essental that same CFM and PSI but different pattern for the mounting plate.






I've talked with my CNC guy about the plate...need to get him the gasket and SC to finalize the specs of the plate tho.

I have a flange for the custom intake manifold on order (a fellow TR member is contributing this item).



The flange is a cut and plained KA intake that will allow for a short runner design and different water neck.

I need to learn Autocad too...may help me explain things a bit better.

-Royce

 

very nice.
I like that plate/flange you have for the intake. You going to have your plenum welded straight to that? With the trottle body at the opening of the plenum? Would make for a nice compact set up.
I'm assuming the supercharger draws air in that opening in the back, and compresses it out of the bottom, right?

If that is the case, then the only "problem" would be working around the alternator in order to set up a front mount.

Have you figured out how you are going to get fresh air to it yet?
Right off of the top of my head, I'm picturing a really long intake pipe.

what are you doing for tuning/ecu?
megasquirt?
since you are making a manifold/plenum, you could get away with switching to a MAP sensor instead of dealing with the MAF, which should make your tuning and wiring and even piping a bit easier to lay out.

Any thoughts on PCV? what about a charcoal catch can set up?
I guess that isn't "really" needed, but with a custom set up, should be worth the effort just to keep everything nice and clean inside.

I was thinking, to maintain low end torque and even some MPG, you should look into a dual throttle body set up. Kinda like the old VW's had. where they had one little throttle body for low RPM's, then a second one that would open up at a certain throttle position.
Just a random thought.

oooh oohh oooh.

If you could figure out how to get around the alternator (maybe a custom bracket for that so it sits a little bit lower and maybe hugs the block more, with a heat shield) then you could get away with a V mount set up for intercooler and radiator. That would keep the piping as short as possible.
Might have to doodle that up really quick and post a picture of it so you can see what I'm thinking.
That could solve a lot of your space problems with trying to run the top mount, and it would keep it away from the exhaust manifold heat and all of that.

 

K... so I can't draw for beans so work with me a little bit...

So we have the engine bay and what not just to give a better frame of reference..
[ATTACH=CONFIG]151415[/ATTACH]
Toss on the alternator to show how you would need to work around it... Can't draw 3D so the effect is kind of lost, but you get the idea. Its there, and you would need to work around it....
[ATTACH=CONFIG]151416[/ATTACH]

So bolt up the super charger above the alternator....
[ATTACH=CONFIG]151417[/ATTACH]

From here, you would need a intake pipe, it would be up where the batter is at (assuming the battery is in the trunk) then you'd have a manifold under the supercharger to create a plenum... that pipe would move the compressed air forward to the intercooler. With the intercooler, picture the "in" being at the bottom and to the passenger side, then the out would be on top, on the driver's side, or maybe even centered depending on how the spacing lines up, point being that it lines up with the throttle body) So through the intercooler and right to the throttle body, into your manifold and short runners.
[ATTACH=CONFIG]151418[/ATTACH]
If you used a civic style radiator then you could get away with mounting them side by side. I'd suggest getting an nice aftermarket radiator to keep up with the heat, but even a stock one "should" be enough to keep up with enough air flow.
[ATTACH=CONFIG]151419[/ATTACH]

Trying to add the intercooler is what makes it tough. Most of the time, people just bolt the supercharger to the intake manifold and call it even. But I think you loose a lot of potential that way. Compressed air is compressed air. its gonna be hot. You don't just run straight from the turbo to the throttle body, so why do it with the supercharger?

 

That V-mount option you mentioned might be a good option as well for intercooling. I'm also considering an intercooling option that might use a heat exchanger, like a Mustang or Vette...water to air intercooling. It would utilize the Frontier/Xterra supercharger collector intake manifold for mounting. Then no worries about rain and weather impacting the engine bay. We'll see though...so much of this is still in the planning stages. It is coming together though...slowly.

 

i edited my posted up there ^^

a "heat exchanger" is good, well, really good, for a drag car, or a track car that only sees the track for 20-30 minutes at a time.
The problem with that system is that it doesn't take very long for the coolant to get "saturated" with heat. Think radiator. the coolant in the radiator eventually gets as hot as the rest of the engine and it doesn't matter how much you run that fan, you'll never get it "cold" again. the cool part about that set up is that you can dump Ice in the coolant reservoir and really chill the air down. Which is cool as hell for a drag car. BUT for a car that you drive every day, I think it would be A) more work than it is worth and B) end up doing more hurt performance wise than other options.

I'm really thinking that from a performance stand point, if you can work out the details of a V-Mount set up, or something like that, it would be the best. A top mount gets exposed to a lot of heat from the engine itself. A side mount is too much work for not enough gain. A true front mount would be sweet, but now you're talking some long piping, which defeats the purpose. A V-mount should have the shortest piping, if you can figure out how to overcome some of the mounting issues and work around the alternator.

there is some pretty awesome potential with a build like this. Especially if you're just trying to build a torque monster.

I'm wondering, at what RPM does that supercharger start to loose efficiency?
Will it keep up the boost levels if you're revving out to 7K?

Just getting this together is going to be awesome.
Thinking down the road, with a set of nice, low end power cams, some light weight stuff to compensate for the added rotating mass, upgrade the ignition set up, maybe even a shot of nitrous, and this thing should really scoot.

One of these days, we'll have to find time so I can swing by and check out your ideas in person.

 

<sigh> I guess there is no shame in getting beat by a Camaro SS from a dig...but I dont have to like it. Maybe If it wasnt soo close to start.

 

you raced a camaro ss... yeah, it should have beat you. no, you don't have to like it. not at all.
after your supercharger is all done up, you'll spank them. but currently, no, you shouldn't be able to beat them.
if you do, then I would worry about things like spun bearings or something. you always make the most power and run the best right before you blow up

 

True enough. I think he was being nice too...couple that with the fact that he had a 6spd slowed him up a little...but every gear he just pulled away. No replacement for displacement. twice the cylinders help too.

Planning on heading out to QSL tonight on 49th...looks like a nice night for it.

 

sure there is a replacement for displacement, its called boost!

he just had more torque on ya.

doing the math right quick....

the 240............camaro ss
155 hp................305 hp
160 ft/lbs...........325 ft/lbs
~2,800 lbs........~3,500 lbs
.05 hp:lb........... .08 hp:lb (tells me he would pull away in the higher rpms/over 30/40 mph. but not tear your doors off)
.057 tq:lb ......... .092 tq:lb (tells me he's launch harder (assuming traction) probably being 1/2 - 1 car lengths ahead by 40mph)

do the same race after you're boosted, (assuming just 10 pounds and no intercooler) you should be making more like 240 whp and 240 ft/lbs
so your numbers would be more like...
240 hp
240 ft/lbs
2,800 lbs
.08 hp:lb
.08 tq:lb

So he might get the jump on you off the line from having a little bit more torque to get his fat ass moving, but it will come down to gearing and power curve, which, you'll have a hell of a power curve, so even if by 30mph, your front is at his rear bumper, I'd say by the end of the race, you'll be at least 1/2 a car or more over him.

And that's not being intercooled. I'm 95% confident that you'll make over 300whp with those same 10 psi with the intercooler and at that point, you'd walk him right from the line (assuming traction)

 

Update: Its been a while, but here is what i've been up to:

Currently doing some research into AC/Climate control lately, as my AC has taken a dump...and my Mode motor is stuck on my feet...woot! Swapped out the rear Z dampers under warranty because they developed a dead spot. Replaced my radio benzel with one that has no cracks. Also considering the path to take with my dash, with its usual cracks. Picked up a set of 370cc SR injectors.

All this while i wait for the plate for the supercharger to finish it CNC process...cant wait.

I'll post up a few pix of these updates later.

Thanks,

-Royce