In this video I discuss a set of World Products cylinder heads from Marketplace. Sometimes if it sounds to good to be true, it is.
I go through all the checks to verify the advertised specifications. Is there something you would like to see on Gold’s Garage? Leave your suggestions in the Comments.
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What did the seller say when he was exposed?
did you sell the sbc 400 yet
A more accurate way ( I think anyway ) to check the accuracy of a valve spring height mic is to use a micrometer. You can get past the lip that locates the retainer and get a real reading on the accuracy. I have never cared for snap gauges ( yes I do have a set ) due to variations in the readings. There are too many variables with a snap gauge. Make it tight enough, are you actually perpendicular to the retainer, is the retainer fully seated, etc. With a height mic you eliminate most of those variables and you can make sure the retainers are seated. Just my opinion, but I do like your vids………..
Those valve spring height micrometers, the scale is for with the retainer sitting on top of the tool. Not seated down inside the recess in the top of the tool.
Therefore if the retainer sits down inside, you need to subtract the depth of the recess from the measurement on the scale.
My Proform brand micrometers are the same.
Good video. More details about springs would be nice. Not much out there talking about it.
One internet observation I've made is that when people strongly disagree with you (or anyone) it's often because they've watched other experts' videos that disagree. So it's a second-hand opinion. Truth be told, experts often disagree about subtleties, but usually agree it's not that big a deal. Always balance… Don't bother balancing… It's just different perspectives, both valid for their own reasons. Nothing to get frothed up about. Pick your poison and you'll be fine.
That spring height mic is more than likely reading exactly right. The diameter of the retainer you’re using is too small for that particular mic.
I use that type of mic for setting spring heights in my shop. I have about 6 different sizes to accommodate various sizes.
I use one of those screw type mics But I take it off and measure it with calipers instead of trusting its numbers
New seal no seals both start with N prob was auto correct…not really lol, it blows my mind how many people are willing to lie, just to sell something. When I sell anything I'm always on the conservative side without talking it down, If I don't know something I just say hey i dont know if I do know of an issue I tell em. I know how it is to be on the buying side and It sucks to be lied to. I am a firm believer of treat people how you want to be treated. If the world went by that it would be a wildly different existence on this rock. I love SBC's I have fought the temptation to go LS platform don't know how much longer I can now I'm at the I have a worn nice warmed over 70s .030 bore 355 and have a worn stock bore 88 roller 350 in my basement. Or I can go pull a 5.3 out n jam it in my 92 c1500 and be done with it. But it would never be done because there's no way I would leave it alone and would want to do the typical stuff cam, springs, intake,headers ect. The stuff I already dumped in my sbc. Except after that the 5.3 would be easily over 400hp the SBC would definitely not be with the parts I have. But the SBC would be refreshed n new a cheap 5.3 would typically be well over 100k miles….
Not sure how you figure anything above 6% cold is good but anyway if that's your standard good luck with it.
.060 is HUGE error. Can it be calibrated? If it’s worth it. We use some Chinese calibrated indicators and calipers but they are all checked in calibration periodically. Japan and American is definitely better.
Anxious to see how those S/R heads work.
What are your thoughts on water pumps, stock, high flow, aluminum? Radiators? Fuel pumps, mechanical and electric? When is mechanical fine and electric become a better choice. Caburators, Holley style vs edelbrock, vs stock Rochester/Carter? Quality of distributors? Stock replacement/billet/HEI/coils/spark boxes?
How much height do you think using a copper coat type of product on the head gaskets might add, or in essence take away from your desired quench height?
Port flow will trump any small changes in SCR.
Cylinder heads 99.44% of the time come with larger chambers than advertised; this is called the Serviceability margin.
Measuring a chamber without a plate will result in a higher/larger cc due to the “dome” of the fluid extending above the deck surface.
Those cheaper valve spring IH micrometers: You have to verify; normally the outer lip/edge is the accurate surface for the retainer to ride/contact. The inner lip usually shows +- .140” difference. Verify the differences with your calipers to find the difference. JD
Thank you Alan!
Great information and video Alan
Right from the get go I really doubted titanium retainers, keep up the good information.