on a chevy you can pour water down a carb to clense the inside of the cyclinder wall would this work on a rotary?????

 

Yes you can do this to a rotary, but you can use much more water. I will comonly pour a whole 12 oz. down it whil its running really fast and it tends to make it run very smoothly. I have done it to several and it never hurt anything. In fact the one motor that i never did it too, blew last week. It wont hydro lock and it doesnt hurt anything. Just take the air cleaner off and while softly revving it to about 2-4k dump it down there while pumping the throttle, the rpm will die down but it will run, if it dies it will generally still start right back up.

CJG

 

i thought that water wasn't able to be compressed, couldn't that hurt

 

Only if you pour in too much at once. There is still enough room for some watter even at TDC.

-Marques

 

Done it, works great! Youll only hydro lock if you put enough in to stop the engine from running. Youll be reving it up to 3500-4000 to keep it alive while your doing it. On my -SE I just found a vac line that didnt kill the car when I removed it, put a longer piece on to it then submerged it into the water- let it slurp it up a little at a time.

 

WHy would you feed water to teh innards of the motor?

 

I gave some water to an old '69 Corona and it seemed to like it. I'll try a rotary some time.

 

Because it cleans the internals as the engine is running. Try it, your engine will run more smoothly after wards for a while. Like i said i have poured pretty large amounts down it within say 10-20 seconds, and the rpm definetly gow down, but i have never hydro locked it, (stopped running and wont turn over). it died once then i t jsut restarted immediatly with the started like usal, and i continued the water treatment.

CJG

 

I wonder how water stacks up against mmo and atf...?

-Marques

 

anyone ever had any bad experiences with this at all, sounds pretty promising to me

 

Do you have to wait for the engine to warm up before you pour the water in? I am most likely going to do this once my 7 comes out of storage. I can't wait. Lousy snow and cold! Please tell me everything else I should know.

 

My auto shop teacher thats 65 years old runs a diesel fleet swears by this, so i know it will work just dont kill the car, little bits at a time, thanks everyone!

 

ok so the engine has gas oil and aitr spinning at high speed and temp

what is removed when you throw a little water into teh mix?

or the MMO (what is that? ) and the ATF?

i know what ATF is, but i thought it was put into a stopped motor and manually worked through the engine. not poured intoe the carb while the motor is trunning.

the only thing i have sprayed into the carb was carb cleaner

 

i think i'm gonna use the rats nest hoses to suck little bits in at a time, how much water al togeather goes in, like how many cups should be sucked in?

 

MMO=magical mystery oil...

 

CptLou, you cant get MMO for one (your in the other country) Water intoduced into the chambers raises the temp and creates steam. The temp and the steam removes carbon. Other post up top, no need to let it warm up, but always a good idea. When I did mine I use a 1/2 gallon, just cut a milk jug in half. I didnt see anything flying (carbon) out the back but Ive had boinger guys tell me it will. As far as comparison, I havent tore apart a motor before and after so I cant say. I would say that MMO is great (better than ATF) but takes a long time. Ive heard that AMSOIL power foam is the best but these have all been last resorts, ie engine no starts etc. Steam is a proven cleaner, stay up late and watch the infomercials. We used to spray our jet engines with water (called a water wash) to get the crap out of them too. Works great.

 

I thought that it was Marvel Mystery Oil. But I could be wrong. Anyway, which is better, MMO or water?

 

Im with stupid on Marvel on Magical.

 

To those that want to know how much how fast. I usualy use like a snapple bottle or 20 oz or something, fill it with water. take the air cleaner off the carb, rev it to 4k and dump half in right away, then bring the rpms up again and dump the rest in. its that easy. I think there is a slight advantage to dumping quite a bit in at a time:
this is because by dumping a lot in fast i think it fills the chamber more and will force water and or steam to and behind/around the apeax seal grooves, this is where a lot of times carbon builds up. so by doing alot it gets back in there and flushes it out. Like i said when i hjave done it to a few engines, they have never blown up or anything. And usual driving out the drive way they hesitate a little, because i think there is some water that gets stuck in some places in the manifold or something and its still burning it a little, then after just a couple minutes, the thing will run smoother than it has in a very long time. Good luck guys, its free, fun, and your piston friends will never believe the amount you can pour down them...


CJG

 

I would do both, shut car off, dump a half bottle of mmo down the carb, turn by hand or remove spark plug wires and crank a few times, let sit overnight, start up next day, will smoke for about 10-30 minutes due to the mmo getting past the side seals and burning out. Drive that whole day then when you get home give it the water treatment as described above. after that it will run very smoothly and you may even think it feels quicker. again good luck.

CJG

 

yeah water works great, steam cleans the inside of the motor, just be careful that you dont pour too much in, hydrostatic lock at 4grand will send your motor into next week.

 

This is an OLD trick that people have been doing forever.

Water is fantastic for piston and rotary engines alike. though just pouring it in isnt that effective.

The best way to get the most benifit is to get an orchid 'mister' (the thing you spray plants with, its like $1.25) and fill it with DISTILLED water (80 cents at food stores? You dont want the crap inside your tap water getting into your engine, do you?).

Now, take off your air filter, then rev the engine a little (1500RPM is FINE) and spray it over (not directly into so much) the carb so that the mist is sucked in. That way it wont condence on the carb as much.

You engine uses the water better when its atomised, just like it uses fuel better when its atomised.

On piston engines this is said to 'de-coke' valve stems. It supposedly breaks up carbon (I dont know so much about that)

But you ever want to learn more, you should see a full time system, look up "Water Injection" Water injection on piston engines allows you to run higher compression, advanced timing, more boost, and it gives you better fuel economy and emissions while your at it! SAAB had a concept car that had a water tank as big as it's gas tank and pumped them both in. Ran some insane boost (This was in the late 50s!)

What works the same as this now-adays? You guessed it! Nitrus! and on DIESEL engines, PROPANE. Some engines are adapted to use Isopropyl alchohol the same way, but I dont know much about them.

 

Related thread:

https://www.rx7club.com/showthread.p...threadid=33778

 

Ive seen this done to boinger engines many times one problem that keeps comming up, if your engine is carbon'd up the water breaks up the carbon in large chunks, it doesnt eat it away. Ive seen massive chunks of carbon come off pistons and slam around inside the combustion chamber, very horrible sound, much like a massive rod knock, not sure what kind of damage to a rotary prolly none considering they dont have valves. just a thought!

 

If you have a turbocharged car, add a water injection system like aquamist. It injects a certain amount of water at a set RPM or boost level.

I have seen a Mitsubishi 4g63 (or whatever is in the Galant vr4) apart after 60,000 on 20psi and some large turbo. Internals looked amazing. all polished and perfect.

I plan to add a water injection system at some time.