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Messages - FrozenMerc

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31
FE Technical Forum / Re: 352 Performance?
« on: January 10, 2023, 02:17:33 PM »
More information on exactly what he wants the truck to do would help us point you in a more defined direction, rather than just throwing out suggestions. 

You mentioned 400 hp.  OK, but doing what in the truck?  I can build a 400 Hp 289 or a 400 hp 7.3L.  They are going to have very different uses.

I built my 352 to pull a 4500 lb plus wagon down the road at 70 mph all day long, in OD, with minimal effort.  That motor put out 325 HP, 375 ft-lbs on the dyno with a very flat torque curve that comes in at over 300 ft-lbs as low as 2500 rpms, perfect for a highway cruiser.

A bit more cam and compression, and that engine would be very capable of 400 hp, but I would likely be moving the torque curve up higher into the RPM range as well.  Which would work well in more of a stop light bruiser application.  Throw some more stroke at it to lower the rpm range of the torque curve and you are back in the good pickup motor that can tow category.

Lot's of Options, which is why a good plan is critical.

32
Private Classifieds / 4' x 4' Welding / Fabrication Table
« on: January 10, 2023, 01:51:58 PM »
48" Square welding / fabrication table made out of 1.50" thick steel plate.

      - 1/2"-13 Holes drilled and tapped on a 6" pattern for use with machinist setup clamp kit.
      - 6" Polyurethane Casters for easy maneuverability
      - 38" High
      - Weight: A bit over 1000 lbs.

Edges are flame cut and not machined square.

Plenty of room underneath to add tool storage, or a welder mount, etc.

Table is located in Springfield, MO.  I am willing to deliver to any location within a few hundred miles there of at $0.60 / mile, as long as you can unload it.

Message me for any more details.








33
Non-FE Discussion Forum / Re: climate change is coming
« on: December 21, 2022, 04:39:57 PM »
Meanwhile, in Minnesota....  The weather report is a bit more optimistic. 

If the temperature got up to 17 deg's this weekend, I guarantee you would see guys standing out on the ice, fishing in shorts and short sleeves.




34
Non-FE Discussion Forum / Re: Emergency electrical generator suggestions.
« on: December 21, 2022, 03:22:13 PM »
At my previous house, I had a stand alone 5000W gas powered generator.  I had an electrician install an outside plug and breaker switch so in the event we lost power, I could just plop the genny down, hook up the cord, throw the breaker and have power in about 10 minutes.  As lalessi alluded to, the hardest part was staying on top of maintenance and making sure it was ready to go when you needed it.  I tried to run it at least once a year for a few hours, just to keep up on it.  That genny had a Tecumsah engine and was LOUD.  It wasn't big enough to support the electric floor board heat, or the electric boiler for the in-floor heat.  However, it could run the blower and heat pump / AC on the natural gas furnace, keep the lights on, and the fridge cold.  I.E. keep the house from freezing up even if we were without power for a few days in sub-zero temps.

With the new house, we are in the process of installing a 40 kW solar system.  Since we opted not to put in a battery system (Holy Shit is Elon proud of those damn things), we installed a Generac Natural Gas genny along with the solar.  The goal is to be able to be off grid for extended periods of time if needed (or as long as the city is providing natural gas).   

I am still looking for a PTO driven genny to mount on the front of my vintage Wheel Horse.  However, that is more just for style points, then being terribly useful.


35
FE Technical Forum / Re: Rod Bolt Question
« on: November 21, 2022, 01:27:15 PM »
Jim-W:  Just remember what Wernher Von Braun is often attributed with saying:

"One Test Result is worth a Thousand Expert Opinions"

That is why I was hoping someone with back-to-back experience would chime in.

36
FE Technical Forum / Re: Rod Bolt Question
« on: November 21, 2022, 01:00:00 PM »
Merc, are the new gen powdered iron "cracked" rods not rebuildable/resizable on their big end?  Randy M

We don't here.  We rebush the small end, but if the big end is damaged, throw them away, and get new.  Supposedly there are guys resizing Chebbie LS and some other automotive fractured rods, but with these big 13 to 15 Liter CAT, PACCAR, and Navistar motors, it is easier and more cost effective to just replace the rods.

The 13MX PACCAR's and A26 Navistar's even use a fractured main cap.  So if the motor spins a main bearing and walks a cap, the whole block is junk because once the fractured surface is deformed, the cap never mates up properly again.

37
FE Technical Forum / Re: Rod Bolt Question
« on: November 18, 2022, 01:24:50 PM »
I hope a couple of the engine builders that have real world experience will chime in, but the engineer in me would answer the question like this. 

I would want the larger rod bolt as the larger bolt will produce a higher clamp load when torqued to a significant percentage of it's proof load (assuming the bolts are made from the same tensile strength material)  The higher clamp load of the larger bolt would do a better job of holding the cap to the rod, preventing motion and fretting.  I don't think there is enough difference between a 13/32" and 3/8" bolt to significantly change the cross sectional area of the rod and lead to a tensile failure outside of the bolt. 

I never ran into this particular situation when I was a Test Engineer with a small engine manufacturer - those engines used multi piece cranks with single piece rods pushed on during crank assembly.  Now I am working with HD Diesels, and 95% of what we do are all fractured rods these days, which obviously have a bit different clamping consideration.  Just a few old DT466's still come through the shop with "old style" rods.

38
FE Technical Forum / Re: Engine theory 4 stroke- smart people needed
« on: November 16, 2022, 12:48:37 PM »
Rod length is going to play into your piston location as a product of crank angle equation as well, see an example diagram below.  Longer rods increase dwell time at top dead center.  I would suggest you put a quick Excel spreadsheet together with your variables to understand the order of events, the equation describing piston position is in the 2nd diagram, solve for x.  Injection timing is critical on a diesel with regards to piston location, the spray pattern from the injector is matched to the shape of the bowl in the piston in order to get ideal swirl and fuel atomization.  Firing that injector too soon or too late, can result in burnt pistons, poor combustion, detonation, etc.  A spreadsheet will tell you how much the piston location is going to change from one stroke length to the next with regards to crank angle. 




39
The 6.9 heads are actually drilled to just under 0.500", which means they will pass a 1/2" threaded rod, but not a 1/2" bolt shank.  Also, by time you have all 17 bolts and position tolerances to worry about, something isn't going to line up.  So I just reamed the holes to 17/32", and everything worked fine.

I am using Classic Diesel Designs turbo kit.  Which is essentially a stock 93/94 turbo setup with a few ATS pieces thrown in.  I am still running the 6.9 pump (or whatever pump the Ford dealership in Lafayette, IN put on it when the original went down as I was passing through town 6 years ago.)  Injectors are from Accurate Diesel, but I have a 2nd set from CDD on the shelf incase I throw a bigger pump at it. 

The pump is definitely the limiting factor right now.  I don't have it turned all the way up, but it is close.  Very little black smoke at load, and EGT's rarely exceed 1000 F,  the temp probe is in the passenger exhaust manifold.  Peak boost is about 10 psi with the waste gate blocked off.  I also had Oregon Cam grinders regrind the cam. 

I would suggest running the turbo rotating assembly regardless.  The heavier wrist pins and rods are just good insurance. 

40
Cool project.  I subscribed to your channel.

I have an '85 Bullnose Dually that shat the 6.9 in the spring of '21.  I ended up putting a 7.3 shortblock under the 6.9 heads and installed the 7.3 Turbo and intake.  I am also running the original T19 4 speed with an Advance Adaptors Ranger Gear splitter OD.  Much different truck with the IDIT in it. Let me know if you have any questions, although I won't be much help with the 4x4 conversion.






41
Non-FE Discussion Forum / Re: Real Ford Y Block 4V makes 613 hp NA
« on: November 04, 2022, 03:09:50 PM »
Impressive numbers Joe.  Keep up the good work.

42
FE Technical Forum / Re: intake manifold to reservoir tank
« on: September 06, 2022, 01:00:16 PM »
Jim is likely correct.  Take it off, get some cheap rubber plugs, and put LOW psi air to it and squirt with soapy water if you want to find the leak for yourself.  Otherwise, take it to your local rad repair shop. 

43
FE Technical Forum / Re: Edelbrock intake differences
« on: August 17, 2022, 01:10:23 PM »
To be clear, the engine is doing just what I want.  I'm wondering why dropping 24% rpms (2900 down to 2200) didn't give me at least a smidge better mpg.

On the highway it takes X amount of horsepower to push your truck through the air at 70 mph.  Semi's with 53' Vans take about 270 Hp, Corvettes take about 35 hp, your truck falls somewhere in the middle.  Your engine has to generate that same horsepower whether it is running 2200 rpms, or 2900 rpms just to push the truck along.  If all other things are equal, and your burning fuel stoichemetrically, then you need to burn the same amount of fuel to generate the same horsepower regardless of engine RPM.

The difference that occurs, is the engine has less rotating resistance at 2200 RPM's, which should help to increase your mileage, because at 2200 rpms you would expect that it only takes X-5 or so horsepower to move the truck down the road.  However, the overdrive robs power, and as you suspect, there is probably some decrease in efficiency in the intake track at the lower rpm, but I would venture to guess the OD is the big killer.  The big truck guys figured it out a while ago that a tall rear axle and one-to-one final on the transmission is more efficient than a deep rear axle paired with an overdrive.

44
Non-FE Discussion Forum / Re: recomendations for a mill
« on: August 16, 2022, 01:40:52 PM »
I have been in the market for a new mill as well recently, and as a primer, I took an advanced manual machining course at a local Tech School this winter to refresh some of my skills as it had been 15 yrs since I was in school, and the job has become much more desk orientated.....  First day the instructor points to the row of Jet lathes and states "J E T = Junk", next the 2 Grizzly mills, "Grizzly = Garbage"  Being that I now live in Springfield, that soured me on Grizzly, even though it is still fun to walk through their scratch and dent show room from time to time and pick up some deals.

I will 2nd Falcon67's suggestion of Precision Matthews. 

Also, Watch some of Abom79's videos.  The guy is an expert machinist and generally seems to have pretty good advice on equipment.

https://www.youtube.com/watch?v=PV0ldiD7-qU

45
FE Technical Forum / Re: Dumb Exhaust Question
« on: August 09, 2022, 01:20:40 PM »
I would suspect my bone stock, 7.3L, IDI, diesel would fail this test too.
The engine in factory spec simply makes a lot of noise....no exhaust sounds, just the running engine.
What do they do when a factory delivered vehicle is too loud and it is not something like exhaust causing the noise?

No doubt.  Nothing is much louder than an IDI injection pump at idle. 

CV355:

Make sure you understand the noise ordinance very clearly.  The measurement location makes a huge difference.  The difference between taking the measurement 1 ft from the tailpipe vs 4 ft can be 10 db or more.  Sound pressure decreases with the square of distance.

More volume within the muffler generally helps a bunch.  The extra volume lowers the sound register and reduces the pressure.  When I first built my '62 Merc, I used the same glass pack muffler I had used on my '51 F-1.  I figured the engines had similar displacements (351W vs. 352 FE), cam profiles, and exhaust tubing sizes, and I liked the sound that the '51 produced.  I was way wrong.  The FE in the Merc was LOUD!  Like scare women and children, wife needs ear plugs in the car, get a ticket on 35E through St. Paul loud.  I swapped in a pair of glasspacks that had much more volume and it mellowed the sound right out and knocked the volume down significantly.




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