Don Terrill’s Speed-Talk

I use a scope all the time. When teaching at tech school the best scopes we had were the Pico scopes installed on laptops. Since semi-retired my home shop I have an older Snap-on Modis scan tool and scope. ... You might be the guy who knows the answer to this question. To wit: Is it possible to use...

Maybe you can point me in the direction of where I can find out how many Diesel and industrial motors are made with Aluminum heads? Pretty common. My Ford 6.7 Power Stroke(PS) diesel uses a CGI block and aluminum heads. The 6.7 has used aluminum heads since inception in 2011, so it is hundreds of t...

It starts and runs fine cold. It turns bad once the engine gets some heat in it. I'd be looking at stuff that changes with heat. Maybe a stuck heat riser. Maybe heat in the ignition module. Something is changing. Even valve lash.

It should be fine on an engine storage cradle. I used to start them up with them sitting on a couple tires. Nothing ever fell off the floor. I don't think I would ever do one on an assembly stand.

It might be helpful to hear the brand names of the ones that come apart on contact with the job.

Biggest influence will come to cam's intake closing point and engine cranking speed. For consistency cylinder-to-cylinder, you need a good starter and a strong battery being kept on a high charge. If this is a street solid cam, it would expect to see a good engine deliver at least 160PSI even if it ...

The more compression, the less vacuum advance contributes to improving fuel economy and overall light-throttle efficiency. The purpose of the vacuum advance is to raise cylinder pressure in those low-throttle situations. Beyond the Fords referenced, Chevy also had a centrifugal only on the 283 HP in...

Homogeneous and stratified combustion are the primary considerations, I believe. The difference between a log burning and a block of C4 blowing up is how fast the combustion reaction occurs. It's really a matter of semantics whether we say gasoline is a controlled burn or dynamite is an explosion. Y...

Is 200 miles somewhat close? If so, you can't do better than Gessford Machine in Hastings, NE. https://www.gessford.com/ Gessford is a premier FE builder.

... At the beginning of the video did you notice he mixed up the long rod and short rod every time he pointed too each? Didn’t get it right once 😁 If a total beginner was watching they would be saying,, what the heck?? 🤪 That's not all that unusual in production situations since you're concentratin...

Any reason you're using copper head gaskets? I've never used them myself and never had a specific need to. Everything I know about them is from the anecdotes of others. I've used steel shim and MLS and just about everything in between. Never copper. If this is for a water-cooled application, as othe...

To whom are you writing the response to an eight-year-old thread?

A lot of sites are similarly afflicted. It get annoying to see all these zombie threads popping up and, while I understand some feel a bit of nostalgia over them, they needlessly clog current web traffic. Just one of those; Just because you can doesn't mean it's a good idea.

turbo camino wrote: ↑Mon Dec 30, 2019 8:41 am I used to have a Big Chief-headed motor that would pretty regularly eat several needle bearings in the Jesel rockers. Nothing is indestructible no matter what it costs.

Except anvils.

Kind of like the vapor cycle engine, Roy. A theory that fascinates me to this day.