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Search found 69 matches

by GerryP
Sat May 21, 2022 6:19 pm
Forum: Engine Tech
Topic: using a "scope"
Replies: 13
Views: 2038

Re: using a "scope"

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...
by GerryP
Mon May 16, 2022 7:11 am
Forum: Engine Tech
Topic: Aluminum vs iron heads on a 9:1 daily driver
Replies: 31
Views: 1177

Re: Aluminum vs iron heads on a 9:1 daily driver

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...
by GerryP
Fri May 13, 2022 5:07 pm
Forum: Engine Tech
Topic: Engine Diagnosis
Replies: 39
Views: 1261

Re: Engine Diagnosis

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.
by GerryP
Tue May 10, 2022 5:25 pm
Forum: Engine Tech
Topic: Starting engine on engine stand
Replies: 12
Views: 843

Re: Starting engine on engine stand

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.
by GerryP
Tue Apr 26, 2022 4:58 pm
Forum: Engine Tech
Topic: Cartridge roll’s
Replies: 20
Views: 662

Re: Cartridge roll’s

It might be helpful to hear the brand names of the ones that come apart on contact with the job.
by GerryP
Mon Apr 25, 2022 4:46 pm
Forum: Engine Tech
Topic: compression check on a never run engine
Replies: 9
Views: 564

Re: compression check on a never run engine

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 ...
by GerryP
Wed Apr 01, 2020 5:58 pm
Forum: Engine Tech
Topic: 289 High Performance Distributor
Replies: 17
Views: 1479

Re: 289 High Performance Distributor

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...
by GerryP
Sun Mar 08, 2020 6:30 pm
Forum: Engine Tech
Topic: Just thinking out loud is all??
Replies: 8
Views: 1232

Re: Just thinking out loud is all??

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...
by GerryP
Fri Mar 06, 2020 5:10 pm
Forum: Engine Tech
Topic: Good machine shop in Kansas City area? (FE Ford)
Replies: 7
Views: 1141

Re: Good machine shop in Kansas City area? (FE Ford)

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.
by GerryP
Thu Mar 05, 2020 4:33 pm
Forum: Engine Tech
Topic: Engine Masters rod ratio test results
Replies: 159
Views: 17772

Re: Engine Masters rod ratio test results

... 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...
by GerryP
Tue Mar 03, 2020 4:46 pm
Forum: Engine Tech
Topic: Copper head gaskets
Replies: 13
Views: 2001

Re: Copper head gaskets

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...
by GerryP
Sat Feb 15, 2020 5:45 pm
Forum: Engine Tech
Topic: 462 double hump hp capability
Replies: 37
Views: 7744

Re: 462 double hump hp capability

To whom are you writing the response to an eight-year-old thread?
by GerryP
Tue Jan 28, 2020 8:04 pm
Forum: Engine Tech
Topic: Are these heads worth $1500
Replies: 16
Views: 3172

Re: Are these heads worth $1500

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.
by GerryP
Mon Dec 30, 2019 9:05 am
Forum: Engine Tech
Topic: Rockers too high on the studs?
Replies: 70
Views: 5786

Re: Rockers too high on the studs?

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.
by GerryP
Sat Nov 23, 2019 2:18 pm
Forum: Engine Tech
Topic: Ceramic Coating and Upper Bore Temps.
Replies: 9
Views: 1633

Re: Ceramic Coating and Upper Bore Temps.

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