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upper engine cleaner

(B1) MR_fanny

By (B1) MR_fanny,
in General Maintenance

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(B1) MR_fanny Grand Master

(B1) MR_fanny

Posted
Posted

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

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strutto Grand Master

strutto

Posted
Posted

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...

strutto Grand Master

strutto

Posted
Posted

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...

BigDatto Proficient

BigDatto

Posted
Posted

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 !)

nick_w Explorer

nick_w

Posted
Posted

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 Contributor

skyr33

Posted
Posted
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.

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