Anybody have any tips on cleaning out the combustion chamber by hand not bead blasting etc.. wife won't do it..
oven cleaner, works great
Try http://www.aircooledtech.com/tools-on-the-cheap/soda_blaster/. Then hose down the patio. . .
You can try this stuff, it works great:
http://www.orisonmarketing.com/cleaners/piston/carbon.html
If you ever want to do it with the car together, Mopar combustion chamber cleaner is the best stuff iv'e ever used. Run it down the throttle body, turn the engine over but don't start it. Put some more in it and wait 15 minutes. Then start it and watch it smoke out your neighbors ! If it smokes very little, then you know it was clean to begin with.
"Oven cleaner"? Are you nuts? Toxic, nasty smelling, eats aluminum. The Cap'n
There was a consensus on the MCML several years ago about using distilled water down the carb. About half a bottle slowly, then pour the rest in, stalling the engine, at least if I remember right. Give it 10 minutes and then fire it up and run it. Long drive afterward was recommended to ensure that the oil was dry.
There was concern about hydrolock which those that did it never seemed to encounter. I'd think there might be issues with cracking things too, though that never came up at the time. Maybe it was recommended to do on the first start near immediately? Would have to pull my archives out.
Not sure I'd try it on the 914, even excluding the FI predicament.
-
Soak it in a liquid and wirebrush it?
I have a 63 j200 gladiator with a 350 chev in it and it has flattop pistons. It was built in 1980 and the only way I could run pump gas was to use water injection. It was a kit from holley. It worked like a windshield washer tank with a jet mounted over the middle of the carb on the stud for the aircleaner. It used a vaccum sensor to since low vavvum and would squirt water when you opened the carb up. When I took it apart it was spotless. The only thing is the oil needs to be about 200 degrees to burn the water off so I had to put a 200 degree thermostat in it. I used distilled water in it and kept a gallon jug in the bed to fill it up every second fillup.
That orison stuff might be a good cleaner for a parts washer and it might work on the tops of the pistons with the heads off but you won't get the ring grooves clean without taking the cylinders off.
Well I used the "easy off" about 3 - 20 minute lite treatments and bam!! clean as a whistle did not appear to eat the pistons at all .. even got a bit of overspray on my new oil coooler (also aluminum) and did not see that right away and it did not eat anything or leave anything like a spray pattern.. then again i used a wet sponge scrubby and clean and dried between treatment and then really cleaned and dried with a touch of brake cleaner the piston tops.. never sprayed directly into the cylinder walls and kept each piston i was cleaning at tdc.. Just thought i would put in the results for the next 914 chef..
for the disassembled motor, use the yellow can of easy off oven cleaner.
Only leave it on for 20 minutes then wipe it all down.
It takes several rinse repeat cycles to get it all, but it works.
Do it outside...it stinks.
If you end up with blackened areas, use straight borax (available in the laundry detergent isle) to neutralise the easy off Lye.
It will clean up the pistons again to aluminum.
RIch
I wonder if the borax will make a vw tranny or case new looking again? I'm pretty sure that is not possible but it would be nice if it would work. Even suby stuff gets corroded pretty bad.
After reading this thread a few days ago I've been thinking about the water injection cleaning- I get why it would work so well with a carbed motor, but what about one with FI? How would you even get a good delivery of water with FI?
My teener was set up for carbs when I bought it, so I don't know what an FI set up looks like on a teener. But depending on the set up, the best I can figure is that you would just have to use a spray bottle of water, behind the air filter, but even then I don't see the water making into the combustion chamber to have any good cleaning effect because you wouldn't get enough water running thru the engine at one time.
Plus I can only imagine what kind of havoc even distilled water could do to injectors and other sensors involved in with FI.
Any thoughts about how this might be possible w/ FI?
I'm just guessing... but I don't think it would work.
Works great on a Beetle or carbed engine with a top air intake and I 've done it many times. No great cloud of smoke pours out off the tailpipe so don't be dissapointed. I too have my doubts with pouring water into a sidedraft fuel injection manifold.
I've been toying with setting up a fine spray of water spaying into into the intake manifold with the throttle plate open. Windshield washer sprayer???.
Ken
Powered by Invision Power Board (http://www.invisionboard.com)
© Invision Power Services (http://www.invisionpower.com)