Five-8

Watched the latest episode of this show(which i enjoy a lot) and Edd China hooks up a Jag to an engine de-carbonizer, thought it pretty cool...wondered if it would work for all or some 928s

Sorry if its common knowledge...but it was all new to me

Start the you tube video at about the 6 minute mark


Cheers,

Adrian

fbarnhill

Hey Adrian,
I also whtch the show all the time. I love it. Thanks for the post. I bought a 55k miles engine for my 86.5 to avoid a rebuild. You would not believe the carbon buildup on that engine. It was a good 1/16" deep on top of the pistons as well as the heads. It came off with a lot of work but I will bet that someone drove this car at 35 most of the time and seldom if ever hit wot. She won't have that problem with me. LOL

Dave H.

we used a similar process, but without the fancy cart...

http://www.bgprod.com/products/fuelair.html

aj986s

Sea Foam.

Back in olden' times, we used to use ATF. Either way, make sure the neighbors aren't home when you do it.

dprantl

Why not just use distilled water in a spray bottle?

Dan
'91 928GT S/C 475hp/460lb.ft

longleader

Kreen is all you need, try it and you will be sold. Sea foam is junk

http://www.kanolabs.com/engCle.html

http://www.f150forum.com/f2/just-add...een-oil-87309/

http://www.bobistheoilguy.com/forums...Number=1940735

dcrasta

Kreen is some awesome stuff. I have 2 bottles of it and Kroil. Kano-labs is awesome.

aj986s

I'm gonna have to check out Kano Labs.

AirtekHVAC

Kroil is the best...used it for years on big chillers, and my 928 has been introduced to it!

tv

very informative show on the jag, thanks for posting

Imo000

Regular tap water is fine but you'll need more than a spray bottle. Usually a vacuumm line is wide enough. Bring the engine rpms up, unhook a line and put it in a can of water. Kepp the rpms up untill the can is empty. It will steam clean the engine as well as any other off the shelf product. It's an old mechanic's trick, been used for decades. So save your money and use water.

17prospective buyer

So, i guess another excuse to try out methanol/water (50/50) injection on my 928 would be for the water's cleaning properties in the engine. How is the method of cleaning? The water vaporizes and loose carbon bonds to the water vapor being carried out the exhaust?

dr bob

It's simpler than that. The temperature shock as the water hits the hot carbon causes the carbon to move enough to exit in the normal exhaust gas flow. Water-injected turbo and even non-turbo cars typically come apart with combustion chambers that look like they have never been run. Like everything else, moderation is the key though. Too much water too fast will hydro-lock the engine and destroy it in a heartbeat. Someone ear;lier questioned why you can't just use a spray bottle to get water into the intake, and there are two considerations. First is that you can't get enough in there fast enough to do much good. Second is that LH cars with hot-wire airflow measurement will loose the hot wire if cold water hits it. So the vacuum-hose trick is usually safe. There are discussions about using a hose to just "sip" water from a tray or cup, end of the hose only partially submerged. Some of those same discussions include Seafoam instead of water too.

The BG treatment that pushes cleaner through dirty injectors is very effective. While water or Seafoam or whatever through a vacuum hose may get carbon off the valves and the piston tops, the benefits of truly clean injectors cannot be overstated. In the Wheeler-Dealers demo, the cleaners are forced through the injectors via the fuel rail connection to get the nozzles clean. If there's additional cleaning of the valves and intake or cylinderrs, it's incidental to the injector cleaning that is shown.

-----

K's 4Runner came back from the dealer with a list of recommended services. One is a full intake and fuel injection cleaning service at about $150. They also propose a power steering flush at $100. They didn't volunteer to flush the brake fluid in her 8 year old car though, or a change of the diff and transfer-case fluids. Sounds like a casual weekday afternoon in the work side of the dr bob garage is in order, if she'll let me.

Fogey1

On a car with catalysts I worry about this process gunking them up. I imagine you'd at least want to have them at op temp before you start.

Speedtoys

Not gonna gunk any cats up.

Its...dust. If that.