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    overload springs

    There are a lot of options out there for load-leveling, what's best is determined by what you're using it for. That kit from stengel bros looks similar to the late model overload springs found on the 1 tons. IDK if the factory overload springs will work on your tow truck, but a quick measure on...
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    Buying 85 IDI ATS turbo motorhome!

    In order to get an accurate idea of system operation, you should be looking at both high and low side pressures when adding those cans. I've seen people with plugged orifice tubes add can after can of r134a, because the gauge on the can was still reading low, only to blow the pressure relief on...
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    Dont get mad, spiked lug nuts

    No clue on where to source the pointy ones, a lot of the semi trucks use covers over normal nuts, which require removal before removing the nut. I hate the 2 piece nuts though, because the nut corrodes and swells, which makes it a pain to get the cover off. Most oem cars and trucks use a similar...
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    Oddball transmission ideas

    10 speed would be a twin countershaft unit. The air lines are to operate the splitter. Get a tag off the transmission and you can determine the gearing. Some had OD, some didn't.
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    Oddball transmission ideas

    The 6+1 is single countershaft, as are most MD 5 and 7 speed transmissions. They're more often found as direct models vs OD ones in my experience. Your twin countershaft units are more of your HD transmissions, and will have 8 speeds plus. They'll have 4-5 speeds in the main box, and then 2-3...
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    Oddball transmission ideas

    Nevermind, I had mine in km/h :idiot:
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    Oddball transmission ideas

    The 6+1 was used in a lot of MD trucks from the 90's - 2000's. Before that, they tended to favor five speeds with split rear axles. You'll find more of them to be the direct version, vs the overdrive, and the overdrive seems to fetch double the money on the internet.
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    Oddball transmission ideas

    I have you going 90 at 3000 rpm in direct with 235/85r16 tires and a 5.13 rear axle. :confused: Here is the gear/speed calculator I use. I find it pretty interactive. Best to probably use it on a computer vs a phone. https://www.blocklayer.com/rpm-gear.aspx
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    Oddball transmission ideas

    All my IH's have allisons fwiw.
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    Oddball transmission ideas

    S-series internationals would have them all as well. Essentially any IH from 83 when the IDI came out to about 94, when the T444e/powerstroke took over. I'm not all that sure on parts interchanges with 404/446 stuff. Best bet would be to get a donor vehicle, and swap like for like. I'm sure you...
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    Oddball transmission ideas

    You need to read what subway wrote about single countershaft OD transmissions and the rarity of them. Finding one isn't super difficult, but a direct trans will definitely be cheaper then an OD one. I think I'd get rid of the 5.13 gear set out back before I look for a deep od transmission...
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    Oddball transmission ideas

    The flywheel housing is bolted to the engine. That adapts the back of the block to the md transmission and will have what they call an "sae 2" pattern that the transmission will bolt to. Often times, the transmission will utilize a smaller "sae 3" pattern, which will require an thin sae 2 - sae...
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    Cleaning out the radiator

    I was told years ago to use dish machine soap for oil contamination. and that if you use dawn, don't run the engine, as dawn has a propensity to create bubbles=cavitation. Whatever flush you use. Follow the instructions. Some of them require a neutralizer to be added, and failure to do so will...
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    Cleaning out the radiator

    Try using thermocure by evaporust. It seems to work well in the videos I've watched and is the next thing I'm going to try here in the shop. I've used vc9 from motorcraft as well. It works good, but it won't clean or dissolve large chunks in the system. For oil, I use dish machine detergent...
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    Air conditioning to air compressor

    IH trucks and school buses that were equipped with the idi and air brakes will have a belt driven air compressor mounted on a bracket. They appear to be kind of tall though, so I'm not sure if it will clear the hood on a pickup truck. But, if I were wanting an onboard air compressor, finding a...
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    Recommendations for AC coolant.

    You and me both. A person could buy a skid of r134a in hand grenades no questions asked, but I have to have a license # on file to buy a 30 lb tank. For the record, I actually did buy a skid of the grenades from menards a few years ago. They had it on sale for 2.50 a can and I bought all they...
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    Recommendations for AC coolant.

    Are you talking about refrigerant? Or coolant? Refrigerant is what used in air conditioning, but unless your system is setup for r134a, those cans on the shelf at the parts store won't work for you as you are now. I agree with the cheap cans, and near me walmart and menards have the cans...
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    How hot is too hot?

    I agree. The bypass needs to be there for coolant flow while warming up. Interesting that you mention a piece on the bottom. Some thermostats actually have a piece or "hat" on the bottom so as to better block the bypass port. Check out this link/picture for examples...
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    How hot is too hot?

    I've seen that. Certain engines can have localized hot spots that would cause the flash boiling scenario. I don't think our IDI's are one of them though. In my experience, most engines that appear to be flash boiling actually have cracked heads/blocks or a failing head gasket. All of those will...
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    How hot is too hot?

    I don't like plugging the hole under the thermostat on any vehicle. That hole serves as a bypass when the thermostat is closed, allowing the coolant to recirculate through the engine heating the entire thing up. Plugging that hole stops flow back to the water pump, and forces all of the bypass...
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    How hot is too hot?

    Thermostats are cheap. I know yours is new and motorcraft and all, but if you're leaning towards a faulty thermostat, throw another one in it. Some food for thought. If the thermostat isn't opening fully, then it isn't sealing the bypass port below it, which will exacerbate any overheating issues.
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    How slow on a 10mi long 6% grade?

    Do you have a trans temp gauge? I usually recommend getting one when you're pulling heavy with an auto, especially with an auto that doesn't have a lockup torque converter.
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    What prefilter to use

    https://www.ebay.com/itm/222018225884?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649 I've been looking at this for a while. Should work well so long as you have the room to mount it. The elements aren't the cheapest at 40 bucks each, but they should last a person for quite a while.
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    How hot is too hot?

    Boiling point for 50/50 coolant at sea level with a 15 psi cap is 265*F. At 250 I'd for sure be backing out of it because localized hot spots in the cylinder head will be well over that temp. If you want to get scientific on it, measure the coolant temp at the lower radiator tank. Most have an...
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    Wood u buy a high mileage turbo 6.9?

    I heard the same regarding oil prices, but I don't believe it. Crude is trading 50+ bucks a barrel, which is high compared to the last 4 years, but it's not astronomical, and doesn't warrant the price increase we're seeing. When oil was 100+ a barrel 6 years ago, osb wasn't that expensive...

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