Quote:
Originally Posted by lsturbointeg
anyone having any objections of doing it this way vs tearing off the manifold? read some issues if you plan on removing the manifold and making sure all the valves are closed and making sure the product doesn't enter the cylinder.
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Keep in mind that the video ultimately failed to prove that worked. It IS a great tutorial of using the product and what to expect.
From a pure science standpoint, the only way to know if it's any good is to photograph each cylinders' intake tract, put the IM back on, apply this product, then photograph the intake tracts again to compare. Which at that point you might as well walnut blast it lolo (is there no reputable indy shop in your area willing to do this for less?).
If you and others interested have time, go on YouTube and check out Project Farm. It's a channel that did dude dedicated for comparing oils, fuels, additives, cleaners, etc... In
THIS video he compares BG against SeaFoam and Marvel Mystery Oil . It's a good watch to get an idea of just how effective (or not) this chemical methods are... so you can get a good idea of what CRC cleaner would end up doing.
If I were to rank methods in order of effectiveness I'd say;
1- Walnut Blasting
2- Chemical PLUS abrasive (like those that go in with a gun-cleaning kit's wire brushes and scrub off the carbon being softened up by the chem). As effective as the user's arm and lower back are willing to continue
Chemical cleaning
alone I would not put on the list at all. I THINK (based on what Project Farm shows and other folks testing these) this method seems more effective as preventers of build up rather than removers of already built-up carbon. But then you'd have to START with an already de-carbon'd engine, AND add them chemical treatment to your scheduled maintenance. Side note- as much as some of these products say they are cat and o2 safe, I wouldn't trust that for repeated use.
Hope that helps.