injectors and valve backsides cleaned after install??

[Shannen Durphey]

Hi, Ross.

My advice is to purchase a can of GM Top Engine Cleaner. 
You can pour some onto the valves and let it soak in.  If
you can keep the backs of the valves damp with TEC, you
could probably wipe the carbon looking deposits from the
valves.  

TEC can also be used to clean injectors and fuel rails.  4
oz TEC to 1 gallon of gas is strong enough for most jobs. 
DO NOT pour this mixture into the gas tank.  Isolate the
rails from the rest of the system then connect a pressurized
supply of solution.  You'll need a way to pulse the
injectors.  You could use an ECM with power, ground,
distributor, and injectors connected for this job.  Spin the
distributor with a drill and the injectors should start
spraying fuel like there's no tomorrow. You can also wait
until everything's bolted together and run the engine on the
TEC mix.  This will also do a good job cleaning.

Be warned, TEC and anything like it will produce huge
quantities of thick, white smoke.  Don't use TEC in a closed
garage, and unless you don't like the neighbors, don't use
it in a residential area.

Email off list if you have any Q's.

Shannen
Ross Corrigan wrote:
> 
> Working on my proflo 3500 install (small block chevy) and have my intake
> and head gasket surfaces all cleaned/prepped etc....then noticed the
> backside of my intake valves is quite gummed up with a silvery deposit and
> some with a blacker deposit..a 1/16 to 3/32" thick max I'm just guessing.
> 
> Should I brush them as best I can with a small copper brush right now and
> that debris will just pump out after install/running? It won't 'jamb' on
> the valve seat and cause any damage??
> 
> And/or plumb in some ATF or similar fluid via my schrader valve once it's
> running to clean those valve backsides?? (and it won't hurt the injectors
> correct?
> 
> thanks in advance
> Ross Corrigan  /  Vancouver, Canada
> 
> Ahh, finished with that inferno of work and returning back to the lifelong
> ahem, physics experiments :) ) )
> 
> mailto:280zx at home.com      ICQ # 11549358
> http://207.212.212.139/~corrigan/gearheads/pics/wheels/sirbg.jpg    where a
> Z belongs
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