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Subject: Stored 8n looking for advice

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End of the road 8n    Posted 05-25-2018 at 04:05:08 [URL] [DELETE]        [Reply] [Email]  
  • Stored 8n looking for advice
  • Hi all,
    I recently ended up with a 1947 8n that had been in a barn about 6 years. The gentleman I got it from had his son in law replace the head gasket. The reactor was never started after that because he noticed the head gasket was still leaking and didn’t want to put anything else into it. Long story short after getting it back home using a little atf to soak the cylinders to make sure they were free (they were thankfully). Put a new head gasket on checked plugs wires etc. and tried to start it. Getting fire good compression (around 90 lbs) and gas to carb. Brand new carb btw. Not getting any gas to the cylinders. Any help would be awesome and greatly appreciated. Also when I drained the oil it was brown gray milky color and thin out of the pan but oil in the filter was black but no water. Could 5-6 yeas of central tx weather have made that much condensation in the oil? Wondering if I should go ahead and do a rebuild or leave it since everything looks good. My main concern is why I’m not getting fuel to the cylinders and it won’t start. If it helps it also still has the 6v system with can style coil. Thanks sorry I’m so long winded

    Jim    Posted 05-25-2018 at 09:40:08 [URL] [DELETE]        [Reply] [Email]  
  • Re: Stored 8n looking for advice
  • Welcome to the club. I tend to agree with steveVa about getting it started, and not digging any further until you see how it does. If your new to "N's", one thing to remember is "They WILL start in gear". So, be very careful and make sure it is in Neutral. Never stand in front of rear wheel when trying to start it.
    Bruce and Tim have given you great advice, so I will stop here.
    Good luck, when you get it running, Have fun.

    Jim in Montana

    Bruce (VA)    Posted 05-25-2018 at 06:50:07 [URL] [DELETE]        [Reply] [Email]  
  • Re: Stored 8n looking for advice
  • Just try some starting fluid.

    The plugs are supposed to be dry; if they are wet, you flooded it and it will never start.

    See tip # 13.

    End of the road 8n    Posted 05-25-2018 at 23:24:03 [URL] [DELETE]        [Reply] [Email]  
  • Re: Stored 8n looking for advice
  • Thanks for all the advice guys. Tried starting fluid and nothing. I mistakenly posted it was a 47 I misread the an it’s a 50. After working on it all day I have plenty of spark. Plenty of gas. Timing is good. However what I thought was good compression was NOT. Using the finger in the hole method I thought it was ok. Using the compression tester trick it wasn’t. Cyl 1=40 psi Cyl 2=35 Cyl 3=78 Cyl 4=75. The valves looked pretty rough when I popped the covers off. Wondering if complete rebuild right off the bat or since I have the time take the head back off take the valves out and clean them and try from there hoping they are just sticking on me. I’m new to Ns so appreciate any thoughts suggestions or observations. Thanks

    steveVa    Posted 05-25-2018 at 05:52:19 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Stored 8n looking for advice
  • A 47 should be a front distributer with the square type coil. Could you see that the head gasket had been replaced? Water in oil could be leaked by head gasket. Could have a vacuum leak or carb pluged up. I would get it started before I did anything else. You should check or change the lift oil.

    Tim Daley(MI)    Posted 05-25-2018 at 05:50:06 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Stored 8n looking for advice
  • Welcome aboard the NTC! You came to the right place. You’ll find everything you’ll need to know about these old N’s right here. In addition to the regular N-Board forum, we have the MANUALS and the HOW-TO’s both with just about all the information you need. The archives contains past posts so just enter a keyword and get more of questions that have been asked before. Let’s break down some of what you said already. First, here’s a LINK to our HOW-TO’s with a document on how to proceed with a tractor that has been setting for a long time. When oil is a ‘milky’ shade, it indicates water contamination. Normal oil change procedure would require to first get the engine hot then drain old oil, but you could drain the crud in it now and put clean fresh oil in it before firing it up and worry about doing correct oil change later. I am not sure what you mean by ‘reactor’. The new head gasket still leaked –maybe the block is cracked? Just replacing the carb without knowing what is wrong, if anything, with it was not a good idea. These FORDS were designed so parts could be used over and over, rebuilt when needed, and often so the farmer could do the work himself. Most ‘new’ parts sold today are junk from Cheena. Also, do not assume they are set correctly out of the box, goes for any part. If settings, inside and out, were not verified at installation, issues may arise. Do you still have the original Marvel-Schebler carb? How did you determine you are getting fuel the carb? Don’t throw it away. If it is an 8N, it should have a 4-speed transmission and POSITION CONTROL –the little lever under the seat on the RH side. If it has a 3-speed transmission and no lever, meaning DRAFT CONTROL only, then you have a 9N or 2N. If it is an early 8N, really we go by 1948, the ‘8’ in model ID defines model year even though the 8N was first released in July, 1947. Serial numbers were hand stamped on a cast boss on the block, near the oil filter housing mount. ALL 9N's and 2N's have the '9N' prefix in the serial number, all 8N's have the '8N' prefix. What do you mean by ‘can style’ coil? All early 8Ns up to the mid-1950 used the front mount distributor –see picture -with the square coil on top f distributor. If you have an angle-mount distributor, it will be on the RH side of engine and use the round coil, and the generator will be on the LH side. Do not assume that because it has a 6-volt battery it is the correct original 6-volt/positive ground system. Do you have a generator and a voltage regulator or is there a round can cutout on back side of dash on the lower steering box? You don’t say if you are getting spark. There are at least two good documents to download from our forums. One is Bruce(VA)’s ‘75 Tips For Owners’ and the other is WIRING PICTOGRAMS by JMOR. The latter will have every correct way to wire these old N’s whether 6 volt or 12-volt. Many of us also suggest that you invest in getting the essential owner’s manuals for your 8N. These are as valuable tools as any wrench.



    Tim Daley(MI)

    Jim    Posted 05-25-2018 at 16:35:16 [URL] [DELETE]        [Reply] [Email]  
  • Re: Stored 8n looking for advice
  • Also, how do you jam the valves open? Very new to the 8N. Thanks again.

    Jim    Posted 05-25-2018 at 16:30:25 [URL] [DELETE]        [Reply] [Email]  
  • Re: Stored 8n looking for advice
  • Looking toward the grille which way should the engine turn, clockwise I assume, but to be sure. Thanks

    Tim Daley(MI)    Posted 05-25-2018 at 17:55:11 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Stored 8n looking for advice
  • Ambiguous question Jim, 'looking toward the grille' depends on if you are in the tractor seat or standing in front of the tractor. Look at my post above with the front mount distributor, See it marked with the firing order 1,2,4,3 and the arrow going CCW? There you go.

    Firing Order:

    Tim Daley(MI)

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