Replacing valve stem seals in 305 H.O. small block chevy from 1986 Monte Carlo SS
I'm putting the original 305HO back in the Monte after taking the ZZ3 out for my Iroc project. This is mainly to make the car mobile but it may end up tagged with this engine for a while. Previous owner reported that this 305 has over 100k miles on it and has been out of the car since 1997. He said it smoked during startup and sure enough the valve stem seals were worn out. Hopefully this will fix the issue.
Investigating Chevy 305 burning oil at idle
[[UPDATE: after wasting money on valve stem seals without fully
investigating what the issue definitely was, i finally took off the right
side valve cover which has NEVER been taken off..i found the the rear oil
drain hole (theres 2, 1 in the front 1 in the back of the head) was plugged
with fiber which is from the 10 year old air filter i had been using..so
basically the ENTIRE valve cover was filling with oil force feeding oil
into the cylinders. Goes to show, routine maintenance is not a joke..i
figured an air filter is an air filter, but i guess not lol.After 10
minutes of idling the Exhaust will
start making blue smoke and it looks kinda like "Uncle Buck" lol. It VERY
rarely smokes when i drive, only when i take off.
Valve seal Replacement
Leaking valve seals cause your engine to smoke when you first start it up,
and then it usually runs the rest of the day with no smoke. Usually
replacing the valve seals will fix the problem. Here's how to do it. Of
course other engines may vary to some degree but the basics are the same.
2 Minute Valve Spring Removal How To.
I'm in the process of rebuilding a Perkins 4 cylinder 236 cubic inch engne
(4-236). I had a 4-248 engine originally but it had a hole in the block so
I bought a 4-236. This is the head from the 4-248. The heads are the same
so I'm rebuilding both. This is just a quick how to remove the valve
springs with a hammer and deep socket. The head will require some cleaning
of rusty passages since the Exhaust
pipe wasn't blocked from rain and snow. Its a simple procedure and can be
done inhouse. Most times you would put a rag in the cumbustion chamber to
keep the valves from going down with smack of the hammer but these valves
are rust stuck so I didn't use a rag this time. When you put the valves
back in you would definitely use the rag method for the valves. Most older
engines can be done this way. Chev, Dodge or my favorite Ford can be done
this way. I'm not sure about the newer engines but it might be worth a try.
This is just my experience with valve spring removal and you can expect
similar results with similar head setups. You could also do this method
with the head still on the engine as long as you pressurize the cylinder.
That would be another howto video that is probably already posted on
Youtube. I'll be posting a video of inhouse valve spring installation when
I'm ready to put this head back together.
CNC Cylinder Head Repairs
15D CNC Ported Racer Pro Hd Repairs . These Hds are Australian designed .
They flow as good as any 15D hd and are a superb casting for modifying.
How To Perform A Leak Down Test - EricTheCarGuy
How To Perform A Leak Down Test - EricTheCarGuy
At long last I was finally able to put up a leak down test video for you
and the really good news is that I will be replacing the engine in this
truck and I hope to shoot some video of the process, I also hope to be able
to take apart the old engine to examine the fault that caused the excessive
compression loss in this engine so keep your eyes out for that.
Click below and Stay Dirty
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Cylinder Head 105 - Valve Job Basics
Valves not sealing? Valves not bent? This is how you fix that problem.
In this video I outline the basic valve job procedure. Cleaning the
valves, cleaning the seats, cleaning the combustion chamber and lapping the
valves in to make a better seal.
Here I cover the process start-to-finish. It's the same exact process for
pretty much all non-rotary combustion engines. It takes patience and
perseverance to do this job, but anyone can do it. Reference your service
manual for measurements and service limits. Everything else that's not in
your service manual is in this video.
I apologize for not having broken busted crap to work with in this video.
It's more beneficial to all of you when bad fortune falls on me because it
gets well documented, and many people watching these videos are looking for
answers. If you have bent valves, you will discover it quickly once you
chuck one up in the drill. You'll see the face of the valve wobble around
while it spins. You'll see evidence of this damage on the valve seat. If
it's bad, you may see damage on the valve guides in the form of cracks or
missing pieces where the valve guides protrude through the head ports.
Give all that stuff a good visual inspection. ...and if you doubt yourself,
never hesitate to get a second opinion or consult a machine shop. They
will have access to expensive tools that you wont find in your average
Fitting new valve guide seals without removing the cylinder head Suzuki Vitara
This is how you can remove and replace valve guide seals with the head
still on the engine. Normally you have to have the head off so you can fit
the valve spring compressor on to the head of the valve. I had heard of
this method but never tried or seen it done before. The only special tool
is a piece of string.
Watch the video and see the "Essex Red Neck" at work :-)
Finding Engine Vacuum Leaks With A Cigar
Scotty Kilmer, mechanic for the last 46 years, shows how you can find
engine vacuum leaks in your vehicle using cigar smoke. It really works as
well as a thousand dollar smoke machine. And, If you like my car help, be
sure to watch my live car talk show every Saturday morning at 10 AM CST on
YouTube. I answer your car questions LIVE there. Just check it out at
eature=c4-overview . And remember, every TUESDAY I upload a new video, so
don't miss them.
Engine build part 7
Here is the link for the series on a DVD
HowTo - Change Valve Stem Seals
Thought I'd take a moment to post a how-to guide. Got the head off your
engine for any reason? Head gasket kits usually come with a new set of
valve stem seals. You can install them yourself with one simple tool. It's
totally worth doing, old hardened seals will allow oil into the engine
which will cause a blue smokey cloud at traffic lights or when restarting
the engine. Easy fix, just follow my guide.
Nasty chevy 305 400hp
400hp 305 ported heads custom camshaft 850hp holley dp 9.5:1 compression,
just spare parts i had laying around. file fit moly rings stock crank and
stock pistons with 80,000 miles just new bearings. I built this engine for
the burnout competition for car craft, after car craft in goes the big
block. just hope i finish painting it....
How to Adjust Valve on a Small Block Chevy
Family owned and operated for over 40 years with over 75,000 satisfied
customers. Rated #1 Click on blue link
This video shows our procedure how to properly adjust valves. This works on
all engines with adjustable valve train. Produced by enginefactory.com
Worlds leader in turn key muscle car engines.