HotRodTractor

I've heard of/seen "corona stain" on spark plug insulators before - but that is usually brown or yellow and only a ring around the bottom of the insulator - sometimes you can see a glow around the insulator in complete darkness with the engine running - that is corona. I wonder if this is a similar result, but with a different color/effect from a newer insulator material... If it is, it doesn't mean much if anything. Interesting for sure. I'm in to find out if someone has a better idea to what this is. Always up for new information.

Here is a picture off of one of my parts trucks. Spacer in between the two pedals.

I'm not so sure the unit pictured is a strap on unit - but I understand the sentiment. I'm probably one of the few guys in the country of my age (other than Amish) that can say they've milked in can and used a water bath chiller for milk. I'm only 36 years old. lol I grew up on a dairy farm milking 3 times a day with registered Brown Swiss. We were also quite active on the show scene on a national level. In fact my uncle just had Grand Champion Brown Swiss at the World Dairy Expo in Madison Wisconsin last fall. I've traveled the country with cows and milked with portable units all my life for the show string and for transport across the country.

Whats with the milking unit beside the car? Someone mount a pulsator under the hood so you can milk a cow off of intake vacuum?

I have at least one loose at home - I'll snap a couple of pictures tonight.

Nice to see someone else on here with some CAD skills and a 3D printer. That is a pretty good use for a home FDM style printer. I've used nearly all the different additive manufacturing processes in some way or another within the last couple of years. Right now I'm working on a design that I will have 3D printed directly into sand and then pour some aluminum.... Easily the cheapest way to get a couple of highly detailed castings without sinking money into all the complicated patterns.

Posting them on forums such as this helps - also having the file names something that makes sense and representative of what is in the picture helps as well. If you really want to get a lot of attention on Google upload them to places like Pinterest and put a bunch of identifying tags to help the Google search bots locate, identify, and catalog the picture.

Liability. So many big companies are so afraid of litigation that they only have exact fit in the system. The days of "making it work" don't work for them because what if someone didn't do it right and caused issues to either people or property and then tried to blame someone other than themselves. Its a sad state of affairs, but most big companies just don't want to deal with it. Either buy what my computer says is an exact fit or buy nothing.

I've made molds and cast parts before. The ideal thing is to have a sample part and then make a mold using a product like what you have listed. The trick would be finding the right resin to make what you want. Its been a while since I have done it, but it wouldn't take much time and I could have a decent mold in a couple of days of having the raw materials and parts. Cast lenses would be VERY shortly after having a good mold. Depending on the resin, you might need a vacuum chamber, which isn't a big deal for such a small mold, but it does add to expense for a couple of one off parts. Another option that I have toyed with in my mind - there is a fairly translucent 3D printer filament available that when coated can have good UV stability. Going this route it might be easy to make stock replacements - but if someone desired something a little custom it could be accomplished by changing the base model. I have the equipment to do this as well.

That is certainly part of the plan for this summer! I plan on having everything squared away and the chassis DD ready by the end of the summer and want to display it at a local festival that I attend every year (usually its antique tractors - but I think a fully functional and awesome chassis will get some attention sitting beside one of my Deeres). Hopefully I can mate the body to the chassis before winter and finalize all those details to make it road ready by next spring.

I've got a ways to go.....

I would totally buy one if I was in the position to do so right now. Life has thrown me a little curve ball so I didn't get in on the presale buy, but those are the lumps of life.

That is a cool tag! That is definitely not the head I sold.

Honestly I think getting a new cast head from a short production run for these prices a pretty decent deal.

So we agree that if the manufacturer gives you the CCs of the chambers then its OK - and those numbers should be easily provided to you for a new head no matter what the material it is cast in. The way your post read it was like aluminum it was a great unknown, but making it of iron would solve that. Making new heads out of iron wouldn't be difficult, but it would be spendy because of the new molds required.

Why would you be guessing at combustion chamber volume and compression during a rebuild? How does making them out of iron change that?

I'd be interested in attending an event - the biggest thing is to pick a date and see who all can make it.

Ok.... for some reason I thought that was some sort of PVC mockup.... The first step in welding is ensuring you have good clean metal.

I was told this engine was out of a firetruck. It has dual carb and dual exhaust and is a 25" engine. I can't find anything stamped into the pad on the engine block and someone has added throttle governors under the carbs (and then removed the butterflies!). Beyond that I don't know much about it.

I did a quick survey in the shop last night. My 25" motor with factory carbs and dual exhaust has a huge damper, a different 25" motor has a small damper on the front, my industrial 265 has none, and a 25" motor that I believe came out of a truck had none. I didn't get a chance to take a look at the engine in my 1-1/2T to see its damper status. Small Damper Large Damper

I wonder if its the same one I had and sold on Ebay about 2 years ago? If it is, I think you are good to go as far as threads go unless something happened to it in the last 2 years. I had it for several years with intentions of using it and never did. I believe it went to somewhere in Michigan at that time...

Awesome! Long term plan for my project truck is to build something very similar - except I was going to use a mixture of steel framework, wood panels, and use a multi-layered canvas for the top and some of the sides. Then I could say roll up some of the canvas on one side and have ventilation. I was going to mount my top right to the top bed rails - have some sort of gasket to seal out moisture. It wouldn't provide much insulation on the sides and floor - but it would make for a nice little get away machine when the weather is decent.

This might be an old thread - but just for the sake of it - I'm painting mine Chrysler Industrial Red. Seems fitting for an industrial 265 outfitting with OEM dual carbs and dual exhaust along with a "Spitfire" head to give it a factory hot rod feel. I think the truck is going to be Blue... so it should stand out.

So was I imagining the other pictures I think I have seen? I seem to recall a 3/4 angle picture of this engine on a dyno - but if no one has it... then I must have been making it up....

This was the stepping stone that lead to the early hemi engines. There was also a V6 hemi concept drawn up, but I don't believe it was ever manufactured. I also might have the development number wrong.... I have ran across conflicting information that i haven't been able to sort out. For testing purposes they developed all kinds of cool stuff. Such as the engine in the original post, they also had a dual overhead cam version, I found reference to an aluminum OHV head that had a flat face (not a hemi - or even much of if any type of a combustion chamber). That is what companies and and people do - they develop things. Sometimes they make one and done. Sometimes its evolutionary trying out different directions and paths.... and just like Darwin's theory.... only the fit survive. Perhaps that fit is cost, perhaps performance, perhaps weight, whatever it is.... new things get tried and tested and only the best for the task is developed further.