new engine problems

[Lindsay36551]

WC53,ten window

[Lindsay36551]

Ok round 16 starts today!
I've decided to try one more time with this engine. I have pulled the intake manifold as with the exhaust also(exhaust manifold had no gaskets).
I have installed a new water pump.
I will start with bringing #1 cylinder to tdc and double checking timing.

Here's my question for the day, how can I check valves for cracking and miss fitting to cause backfiring and loss of power. I was told by a speed shop that this might be my problem.
Does any one have a complete gasket set for this engine? I would like to rebuild the engine I just removed.
Give me a dented rusty body and I'm comfortable! This is frustrating to me , but lessons well learned!
Wish me luck!
Lindsay

[Lindsay36551]

One more question, which valve is exhaust? front or rear

[Lindsay36551]

Would it behoove me to pull the head at this time and have it checked out? I'm in it deep enough now !
Again this is an unknown engine!

[rickf]

A lot of questions. To check the valves the quickest and easiest way is a leakdown test. You can get a leakdown tester at harbor Freight pretty cheap. Hook it up and read the gauges and if it shows bad just listen at the oil cap, carburetor and exhaust to hear where the air is coming from and that will tell you what is bad. Rings, intake or exhaust valves. The exhaust valve is the one inline with the exhaust port, that is the easiest way to explain it and it works for any engine. Gaskets are available from any of the usual surplus dealers. Pulling the head is easy to do and since you have it apart you might as well but I would do the leakdown test first. If you have the manifolds off it will be real easy to hear if there is a leak from the valves. It is more likely that the valves are either out of adjustment or could have rust on the face of seat if it was sitting in the Fla. air. Sometimes just letting it idle after adjusting the valves will reseat them.Other times you will need to pull the head and have them done. I am a firm believer in the cheap and easy route first and then if that does not work then pull it apart.

[Mr. Recovery]

Here you go, starting at the front of the motor "left side of photo" is first a exhaust valve, then intake, intake, exhaust, exhaust, intake, intake, exhaust.



In this photo you are looking at the "rear" of the head, the 1st valve is an exhaust valve, look at the center of the spring cap, it is almost flat to the center, it also takes the little cup on top of the valve stem, look at the next valve, it is an intake, the spring cap for it is raised in the center and you can see the valve spring keepers that lock around the top of the valve stem.

[Lindsay36551]

Ok , had my retired mechanic neighbor help out today!
leak down test failed on every intake valve!
Took the head to get done, Plane,dip,install new valves ,and guides.
Rick you would love this place! they do nascar engines for Mopar. Very impressive!
Told me to bring the whole truck in when im done! wants to put it on his dyno.
Name of the shop is Muscle Machine, Eustis fl

[Lindsay36551]

Cleaned all pistons and head gasket areas today.
I noticed a letter H and then a #1,2,3.4 as cylinders went to rear of engine.
What does this mean?

[rickf]

Where were these markings? The numbers are cylinder numbers and are usually on the side of the rod both on the rod and on the cap since they have to be kept as a pair. The "H" is a machinist mark but could mean a lot of different things. Usually related to prior machine work or if something is oversize. I would have to look through the -34 and see if there is a reference to the letter.

[svramselaar]

hi

if a factory make the pistons they can have different size`s
you can trow them away or label them A to ?

the bore off the cylinders is also a bid different in size
label them as 1 to ?

now you can fit a big piston at a big hole and a small piston at a small hole
so the tollerance is better to handle and no waisting parts

below a hyundai manual you can see it there

http://www.heqmanual.com/cylinder_block ... s-430.html


george

[Lindsay36551]

Head came back yesterday! They said valves where never ground , only lapped by hand as far as they could tell.
Valves ground and refitted.
Deck planned ,head was sand blasted and cleaned.
out the door 360.00
She goes back together starting tonight!

[rickf]

Be sure to remember to back off the valve adjustments and reset all of them due to the head being planned.

[Hambone]

I like to give them the final adjustment with the engine running, set at .015, you want slight resistance when inserting and removing gauge.

[Lindsay36551]

Ok , heir's where we are at tonight!
I have spent over a 1000.00 on this engine rebuild , STILL runs likes S!!!
I'm over it, time to let her go with 3 donor engines!
1St 14,000 takes her!
Give me a Humvee any day!
I know I'm hot rite now ,but 30 hrs. in the shop this week making sure everything was perfect, and still come up with zero !!!
Time to move on!
I'm a body and paint guy , not an engine guy!

[m3a1]

I dunno. I'm thinking you need more cowbell but hey, that's just me.

Shall we go over it again?....and it will have to be from the top because you've changed almost everything at this point.

So my first question is, is it running badly in the same way as before? If so, I'm thinking you need to look not at what was NOT changed in the overhaul.