A very Non technical glow plug reamer

[chasinthesun]

I had no time for a shipped GPR after misplacing the one I use maybe once in every 4 yrs. I decided to take a different approach and find a workable solution at Home Depot. A wood screw had a good likeness in size and demension to the glow plug I had brought in to the store with me , the threads had to be a tad bigger than the glow tip .(Ill chim back in tomorrow with size of wood screw I used ).The modification was to simple jb weld a nut on the end of the head ,this was for 2 reasons ,one so the screw wouldnt end up in the block ,oopps ,second was to have a finger grip to spin and twirl like a q-tip going after a waxy ear .As the screw was placed in the first GP hole it had resistance at around the area the GP end starts ,after you twirl the piece and move it in and out it frees up enough to then rasp at the up and down and around motion thus going after the area that the GP heated tip resides.After the cleaning I cranked the engine over 4 or 5 revolutions to blow out the free carbon then it was on to the next .Just as a good tip I add some oil to the threads of the glow plug since carbon is present at the exposed threads and may need abit of earl .The car had been a tough starter in the morning recently and I knew I was due for some new GPs .After finding 3 non working units I was back to putting everything back together .The next morn it was cold enough to see if the service was a success and it was, a fired motor after one cycle of the plugs.Outside temp was only 58 so the 30s in Dec are going to be the real test.

[sloride]

Not sure what engine this is reference to,the GPR for a 617 is quite a bit larger than the GP tip. So if you relocate your reamer you may want to spend the hour and a half to do the reaming process over. As I under stand it is the carbon that contacts the GP tip then kills the plug. Sounds like a reasonable alternative though for a short term solution.

[mannys9130]

He says he swirled his reamer around, up down and in out. If that's the case, it's probably gotten all the Carbon.

I put some antiseize on my plug threads, but being a 601 it's an Aluminum head and a steel plug. Can't be having dissimilar metal corrosion.

[sloride]

Originally Posted by mannys9130

He says he swirled his reamer around, up down and in out. If that's the case, it's probably gotten all the Carbon.

I put some antiseize on my plug threads, but being a 601 it's an Aluminum head and a steel plug. Can't be having dissimilar metal corrosion.

All I was saying is a screw is not a mill end, sorry if I offended you.

[Diesel911]

I have mentioned this before in other threads.

The factory Reamer is 7mm. In the cheapie tool places they sometimes sell a small set of drillbits that has a 7mm drill bit in them. They are good enough quality to act as a glow plug reamer.

[vince77]

Read somewhere about the reamer being 7mm... so I just used a 6mm drill bit with grease in the flutes. Twisted around by finger while hunting around until it bottomed out. All 4 plug holes (240D) produced plenty of little black chips, and thankfully, no metal.

May not be the safest thing to do, but when I halfass something, I try to err on the side of less effective vs. causing trauma.

[charmalu]

The tip of the GP sticks into the Prechamber, the Reamer is cleaning out the
hole in the PC so the carbon does not pack around the GP and short it out.

Iam really not sure that is correct, there is no electrical current going from the tip to the PC.
But it will take away some of the heat of the GP. It`s mentioned it will shorten
the GP life.

Here is a picture of how it is set up.



Just below the hole is a cross piece called the Ball Pin. Don`t want to damage it, but it sets below the hole and doubt it could be damaged.

I tried to find a picture of a PC on line and post it, but this Forum won`t let me
post a picture from someone else`s site?
And Pelican no longer shows them in the catalog or would have posted a pic from there.


Charlie


sent from my pos computer

[mannys9130]

I wasn't offended, just saying that if he moved it all around it's probably clean. I did the same with a drill bit and got my GP holes cleaned out. I loved the 40 bucks in my wallet.

The purpose of the reaming is to remove the built up carbon that would otherwise insulate the element and both cause it to overheat while preventing the heat from warming the prechamber air where it is really needed the most. That results in shorter glow plug life and rougher cold starts. If you have brand new Bosch or Beru plugs, reamed holes, clean contacts, and a strong battery, you are in tip top shape.

[Graham]

Originally Posted by Diesel911

I have mentioned this before in other threads.

The factory Reamer is 7mm. In the cheapie tool places they sometimes sell a small set of drillbits that has a 7mm drill bit in them. They are good enough quality to act as a glow plug reamer.

I don't have a picture and don't know where it is, but I made a reamer using a round ended bit that came in a set of Dremel bits. This for 85 300D.

From what I recall (it's been a while!)- I used an old glow plug with end cut off and inserted and secured the bit with JB-Weld. I set the length so it was slightly longer than the glow plug tip. The bit was slightly undersize, but because I accidentally ended up with it slightly off centre, it worked fine. I just screwed the "tool" in and out a few times. Also used grease to catch carbon.

[vince77]

Good to know I can go fullass next time with a 7mm bit.

[chasinthesun]

The wood screws were brace,the type of bolts you would buy for putting together some nice deck furniture ,came 2 to a pack at a cost of $2.45 at Home Depot.You will find these at most hardware stores ,these were found on the bolt isle in the drawer section ,the size , 7mm x 70mm .I would say once you have a nut jb glued at the end you have no chance of it slipping into the head ,worth the effort.