upper engine cleaner

[(B1) MR_fanny]

i think this is what it's called......its a can that u buy and spray into ur engine to clean all the shiit out of ur block i think. i know suburu does this on servicing...has anybody done this to their line or know if u can use it on a line?? friend just did it to his rex and i want to do the same.

cheers

[Guest RedLineGTR]

IT sounds interesting whats it meant to do exactly, and why do u have to clean that area on subarus especaily. Cheers Rob

[strutto]

I have seen this used on Subarus... Its a foamy type substance. Can be purchased from Subaru. Cleans out the carbon and varnish deposits in the upper engine. Makes a difference. Haven't tried it on any of my cars. Suspect the subarus need it because of the boxer engine configuration...

[WazR32GTSt]

is it similar to degreaser?

just cover your battery and alternator and spray with degreaser then high pressure hose

[strutto]

It is an internal engine cleaner. Not an external cleaning product. Like carby clean, etc. Not like degreaser, Mr Muscle, Jif, etc

[Busky2k]

Yeah its sprayed into the inlet plenum of the engine and left to soak for a while. The engine is run to burn off all the crap and the rest of the can is slowly administered thru a vacuum port to clean up any residues....

[WazR32GTSt]

wow

never heard of anything like it!

[(B1) MR_fanny]

cheers guys.....so has any one used it on their line before??

[Guest RedLineGTR]

well i'm sure if out engines needed it nissan would sure of released it..maybe a major probelm on subaru engines if unreated..

[strutto]

A lot of the older suby guys swear that the engines need regular thrashing to clean the top (should that be sides) of the engine out and keep the lifter noises at bay...

I think the main difference between SUEC and Carby Clean is that the Subaru stuff foams and hence doesnt just drain out the exhaust valve due to the effects of gravity.

All speculation tho as like I said... I haven't used it on MY cars...

[Guest RedLineGTR]

i'm sure any car needs a hit to redline once in a while..but not too often..i say the only thing u need to clean is maybe the throttle body...

[BigDatto]

I have used "top engine cleaner" but the stuff I used was made by Holden & is available thru Holden dealers. The idea is to rev the motor, then dump the stuff in until it stalls !!

sounds pretty harsh eh ?

The car will then blow plumes of white smoke - and I mean PLUMES of white smoke, for a good 1/2 hour or so after restarting the motor. It dissolves carbon deposits in the cyl head & piston crowns. Made a noticeable difference in 20 Y.O L20B Nissan four.

I'd rather fit a tin-oxide fuel catalyst to keep the carbon nasties away - That way you won't have the EPA chasing you (those plumes of white smoke leave a trail for 100m or so !)

[Guest RedLineGTR]

""PLUMES of white smoke"" hehe shit

[(B1) MR_fanny]

tell me more about this tin oxide fuel catylist thingy Biggy.....and why havent u fitted it already??...haha

[BigDatto]

Because...haha - I haven't got around to it. All the answers are here. www.fuelstar.com I have used 'em on 2 previous cars and they work as advertised.

[Busky2k]

I'd rather pull off the intake manifold and clean it by hand. I wouldnt want all the shit to stick on the back of the valves and in the motor itself...

[nick_w]

Upper engine cleaner is really only good for carbon buildup. If you are having problems with detination or know that you are running overly rich and not giving the car a good hammering now and then, then it may be worth considering.

Carbon buildup will effectively raise your compression ratio (by reducing the compressed cylinder volume) so will therefore help performance unless of cause detination is occuring.

[skyr33]

Originally posted by nick_w

Upper engine cleaner is really only good for carbon buildup. If you are having problems with detination or know that you are running overly rich and not giving the car a good hammering now and then, then it may be worth considering.  

Carbon buildup will effectively raise your compression ratio (by reducing the compressed cylinder volume) so will therefore help performance unless of cause detination is occuring.

The carbon build-up bits will glow white-hot and promote detonation by spontaneously igniting fuel mixture.