I just reamed with a drill bit. I have 1981 300D (OM617) i I started with 1/4 drill bit. It would not fit. Went to 7/32 and reamed my way through. I had to twist and push and it opened up. Then I put back in the 1/4 and reamed through. I did not have a 9/32 so i tried a 5/16. I could not get it through so I figured I ws done. Is the 0m617 reamer 1/2 inch??? If so I have much more reaming to do.

thanks.

All places i saw , these have really gone up in price.

Put a little grease on the reamer so the powdery carbon will stick to it- you will have to ream each hole more than once to get the carbon out. Mine were so caked with carbon I had to carve and twist just to get the reamer in on the first pass.
PO put brand new GPs in but the car still coughed a bit upon cold startup. Reaming the glow plug holes fixed this in my case. So, when you change your glow plugs, ream the holes out before you put the new ones in or the job is not complete.

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'02 BMW 325i
'85 300D 450k
'93 190E 2.6 170k(killed by tree)
'08 Ducati Hypermotard 1100S 6k
'06 Ducati S2R800 14k(sold)

Thanks. But what diameter was your final reamer? My final size was 1/4 inch and it had a little play. was that big enough?

i call price gouging!! it cant cost more than 2$ to make this thing

to answer another thread.

glow plug reamer
http://www.peachparts.com/shopforum/diesel-discussion/166836-glow-plug-reamer-post1298423.html

Glow Plug Reamers 917-0053 B606-0053 901-0053
Glow Plug Reamers 917-0053 B606-0053 901-0053

Geez, yall need to negotiate a better price from your supplier. That is outrageous!!

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Jimmy L.
'05 Acura TL 6MT
2001 ML430 My Spare

Gone:
'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
'81 300TD 240K "Smash"
'80 240D 230K "The Squash"
'81 240D 293K"Scar" Rear ended harder than Elton John

You pay for quality.

Samstag gets $128.25 for the OM617 glow plug reamer.

Anybody with access to machine tools can aim a hole down the middle of a bolt. Without machine tools it would be difficult.

I wonder what the diameter of the reamer is. Given the cost of the tool, I'd say making a homemade reamer is worth pursuing. Like biopete mentioned, why not use a drill bit?

I wouldn't obsess over any carbon that stays in the chamber. The material is soft and not abrasive, so it can't harm the surfaces as metal or dirt can.

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95 E320 Cabriolet, 169K

The outside diameter of the Bit of a Factory Glow Plug reamer is 7mm.

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84 300D, 82 Volvo 244Gl Diesel

...and with a ratcheting box wrench, even the cheaper of the reamers is QUICK to run in and out of each hole.

-Tad

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1995 G320
2003 C230 Kompressor Coupe
2005 ML500
2007 ML350