Isuzu I-Mark diesel

[truckinwagen]

ok, so I have been scratching my head about the supercharger.

putting it on the intake manifold like I was going to does a couple things I dont like.

-it puts alot of weight on the cast aluminum manifold, couple that with lots of vibrations and I worry it would crack the manifold. since parts for this motor are hard to come by I dont want to risk that.

-it wont clear the hood, I could mount the charger low on the other side of the motor, but then things get crowded at  the alternator, and plumbing gets complicated with the brake booster there, etc...
 I could cut the hood to clear, and mount a scoop, but it would be way over to the side of the hood, which would look like garbage(and again as hard as a new hood would be to get, I dont want to hack it up too bad)

so I thought, if I am gonna cut a hole in the hood to clear the charger, why not do it in the middle so I could cover it with a cowl scoop?
( or leave it poke through like the jimmy blown hot rods)

looking at the head, there are really convenient mounting bosses on the drivers side, milled flat tapped and inline with the motor



(not great pics of them, but they are there)

I could use them to mount one side of the manifold, and the other could go to the lifting lug on the other side of the valve cover

so the supercharger manifold would hover over the valve cover and position the charger like this





the manifold would have some height to it, so the charger would poke out like this




then I would use a silicone coupler from the supercharger manifold to the stock intake elbow

this would make the charger stick up quite a bit, but not too much to hide under a tall cowl scoop.

the best part is that the manifold design I had will still work with very little modifications.

-Owen

[R.O.R-2.0]

there really isnt much real estate under that hood..

im thinking about supercharging a diesel too..

i have an 81 Datsun diesel, it has lots of real estate around the engine, just not enough to mount a turbo..

[truckinwagen]

yeah, I really want to mount the supercharger so it all fits under the hood, to keep the sleeper look.

but it wont be easy, the damn supercharger is just so big!

[R.O.R-2.0]

that supercharger is tiny compared to the M90 ive been packing around 

nice short drive snout on it too..

the M90 has about a 7" drive snout on it..

[truckinwagen]

yeah, its a really nice little package, the only better thing would be an M62 from a mercedes, they are very small(but spendy)

I think I am just going to go ahead with the over-valvecover install and run sans hood for a bit until I figure out a good way to make a hole in it without ruining it.

-Owen

[truckinwagen]

well, got the manifold assembled, but not finished welding on it yet(ran out of time)

got my leaking exhaust fixed too( the flex was rotted out)

I cut the stock exhaust at the bottom of the downpipe and welded an adapter from the 1.75 to 2.5 pipe.
then I put a new flex tube and a 2.5" straight back to a turbo muffler ending right before the rear axle.

its basically the same exhaust I had on an NA VW, and it was pretty good on it, but this time it is WAY TOO LOUD.

sounds good, the tone is fine, but just way too loud!

there is no longer an exhaust leak filling the cabin with fumes, but I need to figure out the noise issue.
might see about putting a restrictor after the muffler to force the pressure waves to stay and dissipate inside the muffler.

-Owen

[truckinwagen]

[truckinwagen]

well, the exhaust is better, but still louder than I would like it.

the biggest issue was that the flex tube was not sealing against the downpipe properly, so it was releasing a lot of noise there.

replaced that and got it to seal, and it is much better.

next I put a restrictor in the outlet of the muffler(just a 2.5-2" reducer put in backwards) and that helped lots too, but still way to loud above half throttle.

I bought a second muffler and I will be installing it this weekend, I am gonna remove the muffler I have on it now, build an over-axle pipe and put the two mufflers behind the axle, the last one will be where the stock muffler was

pics will come at some point, it has been too dark to get any by the time I am finished each night...

-Owen

[theman53]

If you just get it out from under the car it will be better. You may not even need the 2 muffling devices.

[truckinwagen]

yeah, that may be true inside the car, but the damn thing will still be just as loud outside it.

I really dont want to be the guy waking up all the neighbors every morning.

not sure what it is, but this thing is way louder than any of the vw's I have had.
the exhaust is really aggressive, not bad at idle, but as soon as you get on the throttle it goes crazy!

-Owen

[Powered by Spearco]

Your probably set on that charger, but i know of a smaller clutched on that might be for sale. It came from a JDM spec. Corolla/MR2.  I can get some pics if you interested?

[truckinwagen]

pics would be great!
although funds are pretty tight, so it would have to be pretty close to what I can get our of the M62 price wise.

any idea what size charger it is?(comparable to a m62, m45...)

-Owen

[Powered by Spearco]

I have no idea what size or how to size them. I tried to google it and kept getting the story on the car.
Its size is compaired to a G60 charger. If that makes sence.

I just got off the phone with him. He said $300  . So I know thats a lot of scratch but thought I'd throw that out there. It came on the engine code 4AGZE.

[truckinwagen]

looks like that may be a very nice charger!

might actually outperform the eaton (displaces 1.2L per rev vs. 1L per rev), and certainly is smaller.(although not in height)

$300 is not bad, but more than I can afford right now...

good thought though.

-Owen

[Powered by Spearco]

He has someone looking at it tomarrow and is supposed to call if it sells or not. Why don't you talk with him and make an offer. Never know?