Tony D
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Posts posted by Tony D
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Pressure paper changes color based on h ow much force is applied to it. I think what he means, is to bolt down the manifold without a gasket, but with pressure paper in between, to see if you're getting an even mating surface all around
Bingo! I think it's still available from McMaster Carr---why yes it is! Commonly used in bolted flanges and machined metal to metal surfaces to check for stresses and warpage of the made-up-joint.
http://www.mcmaster.com/#pressure-sensitive-film/=4phx3a
They do have it in 0.020" 'low pressure' applications. I have stacked the thinner stuff before, but that gets tricky. Stick it on the there 0.020" and lightly tighten the bolts. Not crank em down, just lightly tighten so you see a little compression. It should be EVEN across the face. If not, you will see just where you have warpages leading to leaks, and more importantly how much gap you have at those points. Great for deciding if you are going to mill, double gasket, or slather RTV and "Bubbles It"...
(Hint: This stuff works wonders to diagnose warped heads if you cut it to head gasket template size and bolt the thing down even lightly! Dramatically records warpages you may never think amount to anything!)
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I mean, right now there is available a 65mm ITB Triple Setup available for N/A L-Engines. Overkill? I'm sure there is some dragstrip application where peak power comes into play for justifying that.
But in a Turbocharged application, it gets a bit murky as to what you really 'need' and the high-power car I use for a reference point since it's pretty well documented is the Electramotive 83 ZXT.
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"It is a heavily engineered engine with little in the way of "let's just throw it in there" mentality and virtually no bling stuff since it's in a big boat of a car, but they selected a good sized throttle, so there must be something to matching up the throttle to plenum size."
Read what I said about the Explorer and Expedition and their Humongo TBs to give the impression of power, when a lighter Mustang with the same size engine and basically the same plenum has a much smaller TB.
If you start throwing plenum size in there, you are starting to talk about what I discussed about the 'suction bottle' for the recip compression section of a dual staged compressor section of a Hybrid Compression System where a Centrifugal Compressor Feeds a Reciprocating Compressor.
And again, I throw the question out there, which nobody has really answered yet: If Electramotive made 1000Hp out of a non-stroked L28 without a 90mm throttle body...and they have far more engineering brainpower and experience than I...well, from an engineering standpoint, functionally what is the justification given their success? I mean we are almost always talking about these power outputs in cars that are usually lighter than the weight of the car that engine powered, so logic would dictate we are using a smaller TB simply because we don't need the 'impression' of power, since the car is so light anyway.
I mean, 1000HP. That's up there. I don't think it's a matter of 'just enough' with that kind of power level!
Like I said, I don't know the answer, but I can ask that question. Other than 'looks' or 'because I can' (the second answer of which is a fine justification in my book for just about anything), nobody can give me a concrete reason for using a Throttle Body bigger than what E-Motive used. I'm sure if they got an edge by using a larger body, they would have made one. They made the one they used, so there must have been a logic for them choosing the size they did, at that power level. And they spent a lot of time at WOT, so there has to be 'peak power' reasons as well...
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The oil filter boss is interesting, as i have seen three types. My 1975 N42 has a three-point pattern cast in for the oil cooler. The bosses are not drilled or tapped, but they are present. I guess the F54 block has a four-point pattern?
There is number TWO...
Oil Filter Bosswith four bosses, knock sensor...
/Jeopardy Music/
And the last distinctive F54 external difference?
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On the pass. side at the top pf the n42 block there is a raised section with one line in it from top to bottom that lines up between #5 and #6 cylinder and on the f54 there is a second one that lines up in the center of #5 cylinder.
nope... I don't know what you're talking about there, but it's not on 'all' of them since I have a photo of each, and I can't see anything like what you are talking about.
Let's keep this between 'left and right' and not 'passenger and driver' side. Or Oil Filter/Sparkplug side, and Intake/Exhaust side.
Those last two and the first one doesn't change. Driver and Passenger is not consistent worldwide.
The items I'm discussing are universal to all blocks of N42 and F54 persuasion. Obvious items... Three of them. One has been hit thusfar...
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My n42 and my f54 block have it embossed on the drivers side bottom of the block to the right of the engine mount .
ARGH! Visible on the OIL FILTER/SPARK PLUG SIDE (the place on the intake/exhaust manifold side -passengers side in some markets- is usually obstructed.)
The whole point of the exercise is to see if anybody besides me can spot the differences WITHOUT crawling under the car to see that number which is behind the headers/under the manifold.
You don't need to, there are three distinct differences on the Spark Plug/Oil Filter side of the L28.
What are they?
We have ONE so far: the F54 has a Detonation sensor in the #4 Cylinder webbing.
What are the OTHER TWO?
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"Who is John Galt?"
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have the heads been milled without the intake faces being corrected?
Where have I heard that before....
Block decking of a 'coupla thou' will alter the pinch at the bottom of the valley, but if it's only 0.004" the gaskets should accomodate that. Usually you can do the pressure paper bolt down and see if everything is compressing properly and evenly. Any radical changes either calls for a thicker gasket, remachining, or lots of RTV and setup time.
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It's my understanding that radiation exposure will turn your balls black all on their own. Are you sure this 'blackballing' was not due to inadequate PPE usage in the pre-OSHA days?
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Rustling around the morgue, you lift the sheet and realize 'Hey, I knew her in high school!'
Look Left...
Look Right...
Nobody's there to watch...
http://www.youtube.com/watch?v=BZR_Mipc_-M
This is in response to the 'necropost' commentary on the first page. But since you mention a place that freezes people like a morgue... I can use an old Minot joke... 'Why not Minot? Freezin's the reason!'
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yep, nope.
block differences. What head is on it doesn't tell you anything reliably. I have seen E31's on N42's. Does that mean I have a P30 block? Not bloddy well likely when I can see the casting number is N42!
There are at least THREE visible differences between an N42 and the F54 (both simply say 'L28' on the serial number stamping pad)...that are visible on the spark plug side of the engine block.
What are they? Knock Sensor hole is one identifier of the F54, there are two others...
husker du?
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rtv...copious amounts of rtv...
Don't feel bad, the AIR pump on a 1980 Chevy Luv will pump enough air into the exhaust during a 4th to 3rd downshift at 55mph that the muffler will not only have an explosion, it will damn sure enough split the thing down the center wide open!
And that was in 1982, not even two years old!
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How do you tell an F54 block from an N42 from only looking at the spark plug side of the engine?
(Hint: Two or three distinctive features are different...)
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I didn't always live in SoCal, you know. I lived on a tropical island with daily rainfall and typhoons. I practiced what I preached: I moved away from the waters that rust and wreak havoc.
I just see using flooding as justification for not mounting an ECU under the seat about as justified as saying there are tornadoes, so don't ever buy a mobile home, it will come and get you.
Maybe in Oklahoma it will, or Arkansas.
But c'mon! Like Ron says, 'don't make it the low point'... notice I mentioned brackets and standoffs? I mean how wet are those feet?'??? That's an entirely different floor section, separated by a metal 'bridge' that the seat bolts to...
But really, the car should not be leaking. I do go through automated high pressure car washes occasionally. I should not be dripped upon! If I am, I'm slipping on my vehicle maintenance.
I poked the choke cable hole bigger, and used a grommet for the penetration. Sealed the backside (inside the firewall) with that urethane sealant like you use on windows of newer cars. Cable makes a turn UP and is secured by an adel clamp.
Overkill? Probably...and I live in SoCal where it never rains. There are things that are common sense to do to prevent these disasters from happening!
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"Eat your Po-TAT-toes!"
(Alien Reference)
Come to think of it, there are some CG circles I recall on some photos I saw someplace...you could probably scale them from a known objects size in the photo...
Damifino where I saw 'em though!
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Yep, the hex is Japan-Produced Billet. Just found one with 16.2mm lift (0.640") Pretty radical grind...I think I'll pass. Seeing if they can get me something in the 74-75 "Degree" rating for Japan. I'll keep my Japan Ported Head 'all Japan' I guess. If the guy can get what I want before I leave. It's hard to convey 'unground' to them. Or to my translator! I just need to find the source of the billet. If I can find that, me and Ron Iskendarian will have to talk...
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Not really, time and performance marches on. The 'good old days'... really weren't.
But let me ask you one thing:
Does driving the Camry result in any sort of tactile feedback or sensory stimulation whatsoever?
I have driven really quick newer Corvettes. They are a hoot. But they are also sanitary. I get a similar feeling in some of the 350's I've been carted around in or drove. They're a realy hoot to drive, and relatively quick easily. But leave me wanting something they don't give.
As a second car, I'll take a 13 second 240Z over many of the current generation 13 second cars... Now, if I had to use it as an appliance, to get to and from work in stop and go traffic with A/C and a good Stereo... I might take that Challenger Hemi or Z whatever Vette... Frankly for that I'd be happy with a Mini Cooper S. Meh, it's like buying a refrigerator any more. It's all the same mishmash of crap out there, the market is pretty boring.
For smiles per gallon...I probably have to agree the older cars got the new stuff beat. You can always get a smile driving something to the edge, anything---but the older cars provide that at a lower speed in most cases. Probably safer, though not if you shunt and twist it hard! Then you probably fare better in the refrigerator you bought off the new-car lot this year.
But a Camry? Shoot me and stick me in the dumpster, I don't want to live!
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There is a cure for that affliction, to paraphrase Sam Kinnison:
"Move where the water isn't...OH OOOOOOOOOOOOOH!"
You guys all realize that 'flood cars' are something not to be sold anyway, right?
Over the Axle flooding requires a full service of the vehciles' underside.
We are fretting over something that really, in the grand scope of things, not all that common, despite anecdotes to the contrary. If your car is in a flood that comes to the bottom of your seat, you got FAR worse things on it to worry about than the ECU!
If it leaks from the outside it...FIX IT! It's not supposed to do that!
OH OOOOOOOOOOOOOOOOOOOOOOH!
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Oh, don't EVEN get started on Injector Placement. If it's an N/A engine, you want them on a stalk pointing into your velocity stacks at an oblique angle (5 degrees comes to mind), though each engine configuration should be optimized through dyno testing as to the exact best angle. For the close proximity of the spacer to an SU throttle plate it was best to have it hit the plate for cracked-throttle idle quality. It will impinge on the center of the plate, and as the throttle angle increases and air velocity increases (to a point) it will really pick up the fuel into the airstream homogenously, and keep from having any possible over-rich condition---better fuel distribution to all three cylinders on the branch. If the throttle opened any way but horizontal, I'm afraid the mix of a TBI setup would be biased to one of the cylinders during partial throttle. For port injection, of course it wouldn't matter... For max power with the injectors on stalks it might... Who knows? Build it and find out!
And yes, VG30 synchronised Air Doors with linkages shortened will be a snap to get it all going, using a simple cable throttle. You build it, it's been about 20+ years since I had that though the first time (at the Okinawa Naha Prince Distributor, looking at the VG30DE in the then-new Z32.)
It's terrible when you look at an absolutely new car, and the first thing you notice is stuff you could adapt to your own car. You don't see the new car and all the engineering, you see all the shiny new parts!!!
When we took tape measures to the preproduction Titan at a Car Show in So Cal the Nissan Handlers ran over and quickly wanted to know who we worked for and what we were doing. He just sat agape when we told him we needed to measure the height and width of the engine to see if it would fit into an S30...
As he walked back, he said incredulously 'These guys are insane, they were trying to see if this engine fit in one of those! They're insane!' (While pointing to John William's Turquoise and White 240Z)
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Not according to the guys at the Nipa Hut in Angeles City, 1987. There were PLENTY and MANY VD Cranks available there. I hear there are an abundance in Bangkok and Kuala Lumpur to this day. Zeero may be able to tell us, from anecdotes, of course.
Though, if you're a stroker, a VD Crank is not something you will necessarily acquire.
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You obviously have not experienced sonic boom on low flyers... by the time you look up, they aren't even a point on the horizon!
Then again, overseas, there is not the restrictions there is here in the States regarding stuff like that. Having seen F15C's in low altitude demonstration of the above principle, I'd figure you saw something subsonic. Horizon to Horizon on the open sea, out of landfall in 20 seconds is sloooooooooooow!
Wrap your mind around that! The kind of speed from recognition, to sonic boom, to speck on the opposite horizon is not even time to say 'here they come, cover your ears, there they go!'
Guys in the Navy will know what kind of speed I'm talking about, they have seen it. It's actually kind of frightening when you consider your own situation...can't see em coming, can't hear them, and by the time you do, they already dropped ordinance and are a speck on the horizon. You wouldn't know what hit you!
I digress...
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Here is another thing off my drawing board:
Spacers behind your SU's with counterflow injectors firing at the backside of the throttle plate.
I forget the thickness, but recall something like the same amount of the 'doublethick' thick spacers the AutoX guys run to boost torque on the SU's. You could use a gutted SU, or simply any air door. There is enough space to run DUAL injectors in there if you wanted, meaning twin Ford 370's (and no big injector idle control issues) on each adapter. Frankly, with a short air door you could make a real thick spacer for even more torque bump.
I actually drew out the spacer on my drawing board at home... It works, and there is plenty of depth to make bosch-style injectors fit in there.
With a 'thin' sandwich style butterfly, you could even keep the adapter at a minimum thickness required to fit the injectors at the requisite angle for proper impingement on the throttle valve, and leave lots of room for impressive spun aluminum polished air trumpets, two each, fully radiused and 3"+ in diameter with domed filters in the end...
Oh, and yeah, 680's will be more than enough. My bud's cammed Rebello motor is overwhelmed with the 720's. Just too damn big, but he refused to listen to me about trying cheap and available 550's first while in development... lead a horse to water, then shoot it!
Not that I ever gave that setup any thought before this very second, mind you...
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My brother has a 280z with tripple 45's and its no worse or better to drive.
My wife says my Triple 44's are 'like an on-off-switch' though the same triples were on her Fairlady for years. When you add a turbo that enhances down low breathing appreciably, the off-idle modulation is an issue. I'm not saying I don't have a problem with it, but to say that the modulation is just not an issue is not really truthful. It's touchy, touchy as hell with 44's and a blower. Those same 44s without the blower weren't nearly as responsive at tip-in.
And that was AFTER the conversion to throttle cable actuation which made tip-in much more managable!
It's like a Mustang with a 3.8V6 and one with the V8. Tip in on the 3.8 is atrocious, hard to start it wihout jumping (with a slushbox). The V8 is more managable as it has a smaller body. But after the first car length the V8 pulls the jump you got with the same throttle opening of the V6, without the initial jump you owuld think the V6 was a powerhouse compared to the V8. Tip in enhances perceived power, but doesn't do much otherwise. You can see the effects of sizing looking at Ford products like the Explorer. HUGE throttle body on the same size engine as smaller vehicles. But gearing and mass of the body will mask the tip-in. What it does give you is the feeling the truck is 'jumping' from a start---like it really has power. Due to the mass, it's dampened. Put that same throttle body on a Mustang, and you find it really hard to take off without at least chirping the tires, if not outright noticably squealing... No weight and high gears to take away that airflow rush bump in torque output.
Those e-bay manifolds are similar tothe Trust Greddy marketed unit. My bud cut the front of his to reposition the TB better, and used (as I recall) a Q45 TB on it. No clearancing necessary. The weld shop made it invisible. Looked stock (or at least 'Greddy Stock'!)
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Heck, that's where the one is in my 260ZT right now, it seemed the easiest place to put it. Likely it will go somplace else eventually. If you don't have a radio it's spacious enough for most... But if you want to use a heater, there are probably better areas to put it...
How to destroy a muffler in moments.
in Non Tech Board
Posted
HUZZAH HUZZAH HUZZAH!
A man worthy of inclusion into the ranks of Hybrid Z!
That is the first step to REAL knowledge!
Congratulations, there are some who refuse to see that, and they can be quite bothersome...