stealth sohc intake, how to do it

[c2xejk]

As the plenum get's bigger hp increases, but throttle response get's laggier. On my Shadow with over 5L of plenum, I haven't noticed any lagginess.

I would go with as big of a plenum as you can fit. It also makes the junction between the runners and plenum easier to form...

[Ondonti]

Seen some poor plenums with huge charge robbing potential. Mitsu v6 intakes are super easy to build wrong because the runners are so close. You put the walls close and you just made a terrible manifold. That said, even the worse manifolds can make huge power.

[Sundance 6g72]

i dont plan on messing with the runners.. might shorten them though. Should they be flush with the plenum or protrude into it a tad bit?

[87turbodance]

i dont plan on messing with the runners.. might shorten them though. Should they be flush with the plenum or protrude into it a tad bit?

My understanding is that your want the runners to protrude into the plenum a bit with small velocity stacks if they will fit. I've seen a large bead of weld used around each runner entrance that is then grinded into a small velocity stack.

[Sundance 6g72]

hmm might have to wait till after break to do this now. Damn.. o well gives me more time to plan on how to actually build it

any idea HOW far to protrude them?

i might just try and get it installed first and then make my design and have it build then.. i would just need to use my 3000gt throttle body.. no big deal.

[87turbodance]

This is the ideal. Easier said then done

[87turbodance]

You can buy pre-made velocity stacks but they are pricey - usually over $30 each.

[Ondonti]

And you would have to hope that they are the perfect size. Our runners are too close together unless you splay them in in different directions which I have considered. I don't think its worth it. Stacks will end up making your runners longer btw. Sticking out into the plenum does not help anything either. You can always build taper into your runners before they connect to the plenum. Lots of work either way.

[Sundance 6g72]

so i grabbed a diemante lower.. i think its identical to the stealth lower. I still want to use it but im getting the itch to make a short runner intake like brent's

is it worth it to wait for a monetero or raider to show up at the yard? i might have to look harder to find them. the ones i found ALL had the motors pulled

my t stat seems to be working now. it was either megasqurt goofing up or the t stat liked 150 degrees. now its 190 when warmed up so i have time. LOL

[Ondonti]

I don't know. I have seen a lot of 3.0 12v monteros in my time. I ordered mine from car-part.com long before I ever actually looked for one. I would have rather pulled my own so I could have the rails etc etc.

I don't know if montero rails line up with other 3.0 rails so that is a possible reason to not like it. I am using a weird custom rail setup which I suggest nobody uses since its incredibly ghetto. I actually filled and then reprofiled the injector bosses years ago because I didn't know the injector donuts were missing. It gets worse from there. I have a bunch of rails and I can't rememver if they fit. The rails were from diamantes.

[Sundance 6g72]

the stealth rails look identical to the diamante rails. i wish i could find a 12valve truck and be done with it.

does the montero lower have a spot for the heater core on the driver side of the engine bay? thats my main hangup. i guess i could get it to work from the driveside considering it has a spot for it. im all for the stealth intake but i need to figure out how much material to remove bla bla bla. i might bring it to the local junkyard for test fit before i install it on my car. that would be a good way to go about it.

[Irocelectric93]

wait and find a montero. You'll end up in the same boat as me if you don't. Now im stuck trying to figure out what i want to do with my super nice plenums and chrysler lower manifold....