What did I get myself into!!!!

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May 21st, 2004, 07:00 PM
Nuke_littlejohn

What did I get myself into!!!!

When I purchased my M715 about two weeks ago I knew it was not running right. Well I went through the normal little things like Plugs,wires,new dist.,points,cond.,cap,rotor,adjusted carb,new pcv,new fuel filter, and no matter what I did "no good". Now I am a backyard mech. so I did have it in the back of my head to check the compression but I was hoping to catch the problem elswhere. You may have guessed I went and checked it and it doesnt look good #1 170 #2 160 #3 170 #4 0 #5 0 #6 175 ..... I was hoping not to have to rebuild a motor right now but it looks like the first leg to a rebuild. I am going to pull the head soon to see whats going on but if any of you guys have anyother ideas I would love to hear from you.....

It just seems like if I get a vehicle that looks like crap it run great but if it looks great it runs like crap!!! :roll:
May 21st, 2004, 07:06 PM
Nuke_mcinfantry

head gasket, BUT MAYBE it could be valves. or cam
May 21st, 2004, 07:09 PM
brute4c

I'd pul the head...., them is ugly numbers.....unfortunately I would be quite concerned it may be dead....
One thing that I do, probably others do too, when I'm looking at something to buy it is to crank the motor and see if it cranks even....if it cranks:
rr--rr--rr--rr--rr--rr
then the compression is even between the cylinders....if it goes
rr--rr-rr-rr--rr--rr
then there is a compression problem.....it goes faster and slower on cylinders with more or less pressure due to the resistance differences...it also tends to go higher and lower in pitch as it picks up speed and slows....
Just a thought....
brute4c
May 21st, 2004, 07:10 PM
Nuke_littlejohn

Is the civvy head gasket the same? Valves? Cam?
May 21st, 2004, 07:16 PM
brute4c

All that is the same....only difference in the 2 is the head itself...chamber differences between different compression ratios and different bolt patterns on the front of them for different timing covers....gaskets, rocker gear, cam deck, cam, bearings, etc. all the same.
brute4c
May 21st, 2004, 07:22 PM
Nuke_littlejohn

If I have to rebuild, are their any upgrades like better cam , pistons ect.?
May 21st, 2004, 07:38 PM
Nuke_mcinfantry

not that im aware of. cheapest parts kit i could find was 1500!
May 21st, 2004, 08:16 PM
Nuke_littlejohn

Dude that hurt :shock: Are you talking american dollars :!: Man I miss my Deuce :roll:
May 21st, 2004, 08:28 PM
Mikel

Try blowing air into #4 cyl and see if it comes out of #5.

Can head gaskets still be found for these things?? AB Linn?
May 21st, 2004, 08:46 PM
Nuke_68bhs715

Kanter Auto Products (www.kanter.com) has the "standard" rebuild kit for $820, and the "deluxe" (adds valves and valve guides) for $1020. You can also buy the parts separately if you don't need the whole kit. Good Luck.
May 21st, 2004, 08:59 PM
Nuke_littlejohn

Quote:

Originally Posted by Mikel

Try blowing air into #4 cyl and see if it comes out of #5.

Can head gaskets still be found for these things?? AB Linn?

Super idea mike!!!!!!!!!!! That way I could listen to the valves in #4 to see if its leaking
Thanks everybody for all the ideas and so fast! :D :D :D
May 21st, 2004, 11:44 PM
Nuke_spicergear

USA6x6 UPDATE!! Racking fracking S-O-B.

See if you can make sure the piston of the plughole you're blowing into is up on the compression stroke that way you'll KNOW that it's valves are closed AND the forced air will instantly tranfer, if the gaskets blown, to the other cylinder.
May 22nd, 2004, 03:16 AM
hiker

Did you already check your valve adjustment? A long shot, but if they have no clearance on your bad cylinders, that would hold the valve open, killing compression.
May 22nd, 2004, 08:07 AM
Mikel

18 Days

As spicer said, make sure both (or at least one) of the cylinders are in the compression cycle. If you have the valve cover already off, you should be able to see that very easily.
May 22nd, 2004, 11:55 AM
Nuke_littlejohn

A Million Thanks effort for our Military personnel

Just got home from work and am going to try to get down to check it out. I sure hope its that simple and not a bad rod or rings. Will let you all know what I find out asap. :!: :!:
May 22nd, 2004, 02:41 PM
Nuke_littlejohn

I WILL BE AT THE FE!!!!!!!!!!!!!!!!

Well Its not the valves and I cant tell If its the head gasket or the rings :?: I talked to my brotherinlaw who is a mechanic by trade and he seems to think it might be stuck rings. Now I have a last shot plan :idea: . I filled all the pistons with marvel mystery oil and will let that sit over night. After work tomorrow I will reassemble everything and try to start her and let her run for awhile maby beat on her for a bit in the back lot :twisted: . After that I will pour water in the carb to try to clean it out a bit. Then when that fails :( I will spend the next month cleaning out the garage so I can pull the head and get a better look at things :roll: . Man I wish I could just drive her :cry:
May 22nd, 2004, 05:41 PM
Doug

I think I got a head gasket from napa for around $100.

cAN'T REMEMBER WHERE, BUT i BOUGHT A PISTON FOR $30, SOME OTHERS WANTED $100 PER PISTON, SO SHOP AROUND.
cap locks...Grrrr
May 22nd, 2004, 06:01 PM
Nuke_Danarchy

Doug- Are you kidding? $100 for a Head Gasket? My engine is running good, but I still see a GM350 in my distant future. I'll wait till the 230 craps.
May 22nd, 2004, 06:14 PM
Nuke_Darek

Why would you ever pour water down the carburator? That can only lead to hydro lock
May 22nd, 2004, 06:59 PM
jzoliver

Made it to the Lima jamboree!!

If you pour it slowly, it will clean the carbon out of the cylinders. Think of it like steam cleaning the engine from the inside. Hydro locking is bad, I've seen/heard it done. If you are careful, I've heard it works wonders. Never brought myself to try it though.....
May 22nd, 2004, 06:59 PM
brute4c

Pour just a little in and rev it up...repeat a few times....cleans the carbon and any other junk out.....
brute4c
May 22nd, 2004, 07:16 PM
Mikel

Even stuck rings will give you some sort of compression.
May 22nd, 2004, 07:32 PM
Nuke_littlejohn

Quote:

Originally Posted by JeepistDoug/IA

I think I got a head gasket from napa for around $100.

cAN'T REMEMBER WHERE, BUT i BOUGHT A PISTON FOR $30, SOME OTHERS WANTED $100 PER PISTON, SO SHOP AROUND.
cap locks...Grrrr

Felpro# HS8169 $15.24 + shipping www.rockauto.com. But I will check autozone they can order felpro gaskets. What is hydro lock?
May 22nd, 2004, 07:56 PM
dave

sounds pretty bad but could be stuck valves but I suspect you have bad blown head gasket or a nice path between the two cylinders with either the head or block ate up. I hope im wrong. Dont put water down the engine unless its runnin and even then rev it up to about 2500 rpms and slowly trickle it down into the carb, not enough to kill it or hydro lock it, just to clean carbon off of pistons and only aftrer its warmed up do you do it. if you put air into the cylinders to check for valve leaks, ect, make sure you have the valves in the normal closed position and add alittle to start with just in case the piston is at top of cyl. it will push the piston down usually.
hydro lock is when you fill the cylinder with fluid and the piston cant compress fluids so it forces the piston to hydraulicly lock up, it cant move and will even break pistons, rods, cranks, ect.
let us know what you find out. good luck
May 22nd, 2004, 08:01 PM
Nuke_littlejohn

Earlier I poured marvel mystery oil in all the cyl. to let them soak over night. Should I make sure it is all out of them before starting??? This hydrolock thing sounds really really BAD. I dont need anymore work.....
May 22nd, 2004, 08:25 PM
dave

you probably didnt pour enough down the engine to cause it but just to be safe pull your plugs and then you can crank it with the starter and it'll blow any fluid out safely and wont cause any damage, then put your plugs back in and you will be fine. Dave
the pistons can compress air but not fluids so something has to give and the weakest link goes first, usually.
May 23rd, 2004, 12:00 PM
Nuke_littlejohn

Quote:

Originally Posted by littlejohn

Quote:

Originally Posted by JeepistDoug/IA

I think I got a head gasket from napa for around $100.

cAN'T REMEMBER WHERE, BUT i BOUGHT A PISTON FOR $30, SOME OTHERS WANTED $100 PER PISTON, SO SHOP AROUND.
cap locks...Grrrr

Felpro# HS8169 $15.24 + shipping www.rockauto.com. But I will check autozone they can order felpro gaskets. What is hydro lock?

OOPS I messed up this PN. is for the 232 don't get this one......
May 24th, 2004, 04:21 PM
Nuke_littlejohn

I called napa today and one of the guys said he can order the head gasket for $24.95 plus shipping. :!: I will get a part number and post it. Turns out it might be stuck valves after all!!! I am going to pull the head and send it out for a valve job just as soon as I get all the parts. I'm going to drive it if it kills or breaks me :wink:
May 24th, 2004, 04:48 PM
Doug

Sorry guys, That might have been for the kit now that I think of it, but it was not a complete kit. Think you had to order the valve cover seperate.

When I was born, God asked me if I wanted a long memory, or a long.............. what were we talking about???????
May 24th, 2004, 05:58 PM
Nuke_Danarchy

Doug-I was hoping that you just had the decimal point in the wrong place..............too much information!
May 24th, 2004, 09:26 PM
Nuke_68bhs715

Quote:

Originally Posted by Danarchy

Doug- Are you kidding? $100 for a Head Gasket? My engine is running good, but I still see a GM350 in my distant future. I'll wait till the 230 craps.

I got a complete gasket kit for the 230 from Memphis Equipment. I don't remember the price now, but I don't think it was more than $120 for everything including the head gasket.

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