cleaning valves/ pistons, it works!
Thread Starter
Pro
Joined: Sep 2012
Posts: 600
Likes: 6
From: Key West Florida
cleaning valves/ pistons, it works!
so when i did my cam swap a few months back, i noticed that my intake valves had a lot of carbon build up, and i could imagine that the pistons were just as bad, so i went up to the chevrolet dealership to see if they had any tips/cleaners to take care of this problem, they recommended the AC Delco top end cleaner to me, they said pour half down the carburetor at a high idle then return to idle and dump the rest down it and let it choke out the engine and let sit for 2 hours. i was a little skeptical on how it would work because i had used seafoam before and couldent tell much of a difference. but i got it, around 30$ and after 2 hours, i started it and ran it hard under a high load and man did it smoke, but once it cleared up man does it run great! i had to re set the timing, idle, and idle air screws, it starts easier and idles better! i went to change the spark plugs today and the old ones had about 1k miles on them and they looked very carbon fouled from all the junk the cleaner knocked loose. the part number is X66-P and it WORKS, i cant wait to see what MPG gains i get from this product.
Burning Brakes
Joined: Jan 2007
Posts: 1,057
Likes: 4
From: Concord Calif
Race Director
Joined: Jul 2001
Posts: 15,892
Likes: 42
Burning Brakes
Joined: Jan 2007
Posts: 1,057
Likes: 4
From: Concord Calif
Racer
Joined: Sep 2009
Posts: 437
Likes: 3
From: Alvin Texas
I worked in a Chevrolet / Olds Dealer's shop from 1959-1980 The higher compression engines were especially prone to a ping or rattling noise when accelerated
What I know about the X66-P Top engine Cleaner is it works. In the 60's and 70's when engines developed that "preignition ping" that stuff would eliminate it when used as instructed. It evidently removed something.
We recommended an application about every 3rd 0r 4th oil change and before a tune up.
What I know about the X66-P Top engine Cleaner is it works. In the 60's and 70's when engines developed that "preignition ping" that stuff would eliminate it when used as instructed. It evidently removed something.
We recommended an application about every 3rd 0r 4th oil change and before a tune up.
Last edited by bpassmore; Jul 20, 2013 at 06:10 PM.
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Verdad Gallardo
Race Director
Joined: Jul 2001
Posts: 15,892
Likes: 42
I worked in a Chevrolet / Olds Dealer's shop from 1959-1980 The higher compression engines were especially prone to a ping or rattling noise when accelerated
What I know about the X66-P Top engine Cleaner is it works. In the 60's and 70's when engines developed that "preignition ping" that stuff would eliminate it when used as instructed. It evidently removed something.
We recommended an application about every 3rd 0r 4th oil change and before a tune up.
What I know about the X66-P Top engine Cleaner is it works. In the 60's and 70's when engines developed that "preignition ping" that stuff would eliminate it when used as instructed. It evidently removed something.
We recommended an application about every 3rd 0r 4th oil change and before a tune up.
But that was then.
Drifting
Joined: Jun 2010
Posts: 1,781
Likes: 15
From: Oxford Ohio
Carbon can be a hard material. being on the intake, it must make it's way through the combustion chamber around the exhaust valve and out. I just hope during that travel, it doesn't scratch the cylinder walls or get hung in the exhaust valves when leaving.
Melting Slicks
Joined: Feb 2004
Posts: 2,111
Likes: 32
From: Damascus MD
Cleaner
From what I have read, the GM product actually soaks the carbon deposits and assists in actually burning off the deposits.
Other methods may result in chunks of carbon that could cause problems.
Google can be our friend
Bill
Other methods may result in chunks of carbon that could cause problems.
Google can be our friend
Bill
Race Director
Joined: Jul 2001
Posts: 15,892
Likes: 42
IOW- if new plugs are fouled after only 1K miles, there's other issued that need to be addressed.