Custom Intake Manifold

[geldartb]

thats the same thing mcgavin did with his Z26. totally not low profile and once you add a cowl or something around it your up to a half a foot.

[gar70614]

i ment low profile cuz the only other one ive seen was on a beretta and was like 10 inches above the hood and a cav has almost no hood clearance wen v6 swaped. my 3500 has maybe 1/2 inch between uim and hood.

[bob442]

someone has to make a single lower intake to mount the m62 too, not leaving the bottom intake and making a top one to mount the charger too.

[gar70614]

not tryin to jack just really like the idea of this. wat is the ideal s/c to use. we all know a m62 isnt ideal. so m90? wat about other manufacturers? is there other options that might perform beter. the o/p seamed to want to talk about problems and best routes to make this happen. again not tryin to jack, just keep this goin.

[Superdave]

6-71

[kwhauck]

whipple, smallest design and most effecient..

[robertisaar]

whipple, smallest design and most effecient..

most efficient roots type blower, but that's not saying much..

[bob442]

the m90 is very easy to come accross, and cheap, i picked one up for $20 at bucks. it was missing the all the sensors and BOV/BPV, but what ever, its for mock up. plus different length snouts are avalible and pullies. lots of suppourt for them, where as a vortec s/c is more pricey, startingaround $1200, but maybe easier to mount as you wont need to make a manifold for it to sit on.

[kwhauck]

most efficient roots type blower, but that's not saying much..

whipple is a way better design that a roots blower, and although a whipple is a positive displacement blower, it actually compresses the air, the roots does not...

my 1600ax lysholm blower will outflow an m112 and is more convenient in a much smaller case...

http://www.kennebell.net/techinfo/general-info/twinscrew-vs-roots-fromcatalog.pdf

except for the new TVS blower, roots are overrated, and with the new TVS blowers they are ridiculously expensive...

[kwhauck]

so does anybody have any input as far as as design is concerned. Will all the water jackets and oil pockets need to be there for streetability?

[kwhauck]

bump.....

[bszopi]

I haven't even thought about mine at all lately. Too many other things going on. But, to answer your previous post's questions, for the water passages, I planned on using tubing to tie the 2 side together, where the stock manifold has cast water passages. Somewhere in there would be a thermostat housing as well...

[WrathOfSocrus]

I have looked at this several times and to me it seems the original LIM design complicates making a new LIM. It's fairly easy to point out what doesn't work out well for this application, the obvious cross flowing ports, the fuel rail, injectors, and coolant line running through the valley all need to be dealt with. The coolant line can be easily rerouted. New injector bosses can be tapped into the runners of a new manifold after the air routing has been figured out. The cross flow of the original LIM . . . If you use a production LIM as a base then it will reduce how far the charger can go down in the valley. The whole point is to make this fit under a standard FWD hood, and even blowing out the top half of the runners still leaves a couple inches where the ports run below the valley cover where the injector bosses are located. If you could make a base that goes flat from port to port on the intake ports in the head, the charger could be bolted just above the top of the intake port in the head. That would put the bottom of the charger a bit below the valley cover to the stock LIM. If you could make the port shapes wider and flatter till they reach the port then you might be able to squeeze it down a bit more.

a m90 might be a little big but wat if u put the s/c upside down because they can be put in any direction (refering to pic above) under the steel runners with a box above it with all the runners going to it. so the injectors could stay put but it would be a little tall. i dont know much about boost but puttin in my 2 cents.

This would probably yield the lowest possible mounting but also the most difficult to pull off. Making a top and place for injectors and all would be very easy with the upside down mounting but the real issue with this method is the intake ports on the head. They are aimed toward the valley and not upwards. You would probably have to machine the heads for each intake port to aim them more upwards and perhaps bosses to bolt the runners down securely. A bit extreme and lots of fabrication but with good runner design it could be low profile and good performance.

You could perhaps put it in there at sort of an angle, aim the flow to a central manifold along side/above the charger and then equal runners to the ports. Slightly less clearance but could probably be pulled off to fit stock heads without major machining.

I haven't even thought about mine at all lately. Too many other things going on. But, to answer your previous post's questions, for the water passages, I planned on using tubing to tie the 2 side together, where the stock manifold has cast water passages. Somewhere in there would be a thermostat housing as well...

This has been beating me up for a while. I've read a lot about this lately and also seeing people with classic 'milkshake' issues. After looking at it several times I kinda surprised no one ever tried hogging out the cooling system off of a LIM COMPLETELY and just tapping the heads at all four corners. I'm sure someone out there could figure out how to fill the odd shape to the port without blocking the passage and just tap the end. I may have to attempt this on some junk gen 2 heads. Something like this - http://www.summitracing.com/parts/OFY-5308/ or perhaps salvaging the housing off of a manifold would cover the coolant issues leaving the manifold to deal with air and injectors.

i think I may start with a 3500 LIM and saw and see what I come up with...

That is probably the cheapest way to go and the only way to really tackle some issues is by putting together or mocking up the parts to see what fits and what hits. Good luck!

[kwhauck]

here is a simple design from a ford user that I think I can replicate......then a top piece with option plate intercooler can be easily added.....

[geldartb]

nice that would be cool if that could be easily duplicated for our application.

if you could easily duplicate that i would be interested.