hello hello thanks for tuning in today we are back at the cummins 67 turbo diesel and we have a new
intake manifold coming in hopefully and we're gonna get rid of this grid heater
because we wiggled the grid heater bolt it doesn't feel loose super loose but it doesn't
feel super tight either so everybody knows about those killer bolts that drop down i
know it's rare but it can happen this truck just hit 250k so we do not want to take any risk as
if everything is original on the truck so we're going to go ahead and remove this intake horn
we'll do the grid heater probably in another video and we're going to compare the three intakes
between each other the stock one this common one that's found on ebay and then a very high end one
so we'll get all this off we'll get on the bench and we'll take a look at it okay we got the intake
horn off and as you can see our grid heater plate is actually not too bad because we did
clean that last year when we replaced this intake horn but this thing was caked up
and you'll see with the stock intake we never clean that we're gonna show how that looks
so we're gonna get the rest of this junk off with the grid pleater sorry grid heater plate
we're gonna take that off and we're gonna compare it to the new stuff that we got
okay we are at a good stopping point we got the grid heater off and everything and that
six fuel line we did not remove that rear bracket like the book says we were able to
get it with a crow's foot and a wrench and you see all the debris that falls in there so that
thing has kind of got like a bathtub shape so it's not going to fall into the intake manifold
per se but you need to get all that stuff out of there vacuum it out clean everything
out so we're going to clean everything out and then we'll take a look at the new components
and see if we can get it all back together just wanted to show y'all real quick and how disgusting
these intakes get you can't even read the casting numbers over there hardly and that's just from a
little bit of scraping no real cleaning yet and it sucked out handfuls of carbon and this is why the
engines on these things fail because they try to pump so much stuff on top of them when they're not
designed to run like that so clean everything out get it all good and get it back together so the
truck runs right okay the first thing we're gonna compare is the stock grid heater to this new air
boss 6.7 glacier diesel power this is a cnc milled piece all one piece i believe it's aluminum and
this is the stock grid heater so as you can see there's not many differences when you look at it
you have a little divot here i don't know why i guess we'll see when it goes back together but
you have the spot for the air intake temp sensor obviously all the bolt mounting holes and then the
standoffs for the fuel rail they give you little spacers that go on here so that's not an issue
the main concern we're looking at is right here with the grid heater and like we said
we cleaned this one up last year and as you see it didn't get carbon back up which is good
but as you can see it's a huge difference in the opening here and the restriction
i mean it's this takes the entire gasket area where this gives you partial area let me grab the
gasket so we can show you all right the gasket's on there and you can see it takes available of
the entire area the entire area of the gasket you can use and this is a cummins gasket it was
included with the air boss which is good now we're just going to lay it over here and just show you
how much of a restriction you're actually getting all this extra metal in there
so all that's gone when you go and switch over to a grid heater delete so basically if you can see
that's where your intake manifold sits follow that carbon line all the way around all that
area is being choked up and there's a step down all that area is being choked up for less air
and more build up so we'll flip these things over and take a look at the other side
okay as you can see it's nice and cnc machined here you see where the tooling and swirl marks
went through but you can't feel anything it's perfectly smooth it's just some witness marks
but it looks pretty cool i think and if you see you've got a large area that's
dipped out in here for the air to go back if you look at the stock one you don't get that you
get some x's in there that catch all the carbon then you got this big grid here that drops down
and blocks the first two cylinders so you're really starving your engine with the stock one
now if you live in a southern state or somewhere that doesn't drop below freezing you can just run
this no problems we did in fact get the inline grid heater with it that goes into the intake
horn and we'll show that in a second but as you can see this new piece and this will go for any
grid heater delete they're all about the same this one is just we talked to the company they seem
like good people we got it you know we ordered everything it was in stock and they got it shipped
out to us quick so no issues with the company at all good communication but i'm pretty sure you can
pick these up anywhere you know ebay or whatever but just be careful the quality and the machining
like i said this looks perfect and i believe these are all made and milled in the united
states is what they told us so we want to support the united states so we went with these people
but yeah that's the scoop on the grid heater and why you shouldn't really have it because the proof
is in the pudding look at all that carbon in there all that is eventually and but can potentially
chip off and go right into your intake stream with your intake valves and down into your combustion
chamber i mean look how thick that piece is let me get something to break that off to show you guys
and look at that
look at how much carbon is in there it's just absolutely disgusting and all that stuff is going
into your engine while it's running especially if you're under high load this this thing will suck
any type of carbon down there so we will get the grid heater up here now to take a look at that and
see how that looks okay and we have the throttle basically throttle body grid heater these are
what you would see on the five nines i believe and as you can see it is just a grid heater
just like that but much more efficient much more flowing capacity through there and there's really
no possibility of the killer bolt because if these nuts on the outside for some reason back out
these bolts don't have enough room to go all the way in and drop into your intake so
you would be all right and this is a beautiful machine piece this works with
the factory cummins grid heater line no codes no nothing and again this is by glacier diesel
beautiful beautiful cnc machine piece and this will be going on with the intake ram
so let's get the intakes up here and check those things out all right here's the stock
cummins 67 intake as you can see it's not very aerodynamic it's pretty restrictive
this is where your throttle valve would be and that's where the grid heater takes place of this
the grid heater would bolt right there and you would get rid of this but as you can see we didn't
clean this out when we cleaned out the engine when we removed this and put the other intake
on but you can absolutely see how dirty this is and all this is going to be going into your engine
and look at that just chunks of it coming off it's disgusting
so we'll compare it to the ram horn style that was on there and we'll look at that
all that waiting to go in your engine it's a shame that these come from the factory like
that okay this is a common one that's found on ebay and amazon i believe it's this mp boosted
one as you can see this one gets rid of the throttle valve so it's a little bit longer
as you can see here though the opening is much much larger even with the dent and a lot of the
manufacturers except for i believe banks diesel gail banks makes one where he redoes the line and
doesn't doesn't bend them here but almost every manufacturer bends it right here just for ease of
installation it's a little bit of a restriction but when you look at compared to what stock is
the difference is night and day
let me see if i can get these things propped up all right we got the old dial caliper out
we're gonna measure and see if you see that's zeroed out we're gonna measure and see the stock
opening here and what you actually get
so let's see about one and a half inches just over one and a half inches
now if you see when we get on to here this is huge
so we went from one and a half inches to three inches so this intake this cheap ebay
amazon intake that you find nearly doubles the volume coming out right so you got one and a
half and three right there and that just goes to show you right there why you should get rid of
the stock intake and grid heater it is ultra ultra restrictive so we're gonna get the
manifold up here now that we're actually gonna put on and compare all three of them okay we
got the three of them side by side stock just an ebay one that you can pick up ebay amazon
cheapy one 80 bucks maybe and the glacier diesel performance one here it is a beast as you can
see it's got all the port fittings you would ever need down there spot for your intake temp sensor
just two four or five ports for anything nitrous water meth boost pressure anything
and you see they have that huge cut just like most manufacturers do and it's okay uh with
this one they added a little dimple there to keep the gasket from creeping here they they
did not include a bolt with this one so we had to go to the store and get a bolt because we did have
a boost leak from there and the stock one runs straight through the middle there now we measured
this one it is a little bit smaller in diameter as far as circle as this is i believe 2.9 let's see
yeah that's uh that's right at 2.9 2.89 so this was 3-0 in here with this but you
got to look at exactly what's going on here so with this only being off by a tenth of an inch
or 10 millimeters per se this little hump is a bit bigger but you have this entire space in here that
is no longer being blocked and that's this entire space runs all the way up into the collector here
down here so you do have some restriction in the ebay amazon one not as much as the stop one
but you do stop some restriction with this one you can stick your entire hand in there literally your
whole hand and as you see there's nothing blocking it so it's nothing but pure free flowing there
so those are the major differences of why we think you should dump the stock intake manifold
and grid heater you can just see you will get plenty of more air flow through this thing
than you would normally we're gonna go ahead and put the
grid heater onto this and just show you how it looks all right as you can see the stock
manifold intake manifold here on the left and the new gdp one we're putting on that's the
grid heater as you can see it sits just like the stock throttle valve would same position
they are exactly the same as far as bolting up to a stock configuration stock boost tubes so yeah
we're gonna wrap it up for today clean everything up and then we'll get everything back together and
see what the real performance game was until next time thanks for watching please subscribe