I have purchased and use the glow plug reamer on my 300D with great success. The SDL could probably use that treatment as well in the not too long future. All the glows measure 1.4 to 1.5Ohms - seems ok but it does run pretty rough when first started.

So my question is: could I use the reamer from my 300D to ream out the glow plug holes for my 300SDL?! Are they the same diameter holes?

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1987 Mercedes 300SDL; SOLD
1985 Mercedes 300D; SOLD
2006 Honda Pilot - wife's ride; 122K;
1995 Toyota Land Cruiser - 3X locked; 182K

Haven't used mine yet, but if it doesn't work on both my '83 and '87's, Kent Bergsma is going to be receiving an angry phone call....

Jay

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On the road, currently:
'83 300D (German spec.) 168k mi. - - Wolfgang (tucked snugly away for the winter!)
'87 300D 375k mi. - finally went over to "The Dark Side"
'87 300TD 225k mi.
Cannondale 66cm CAAD5 w/Campy/Jamis Aurora
Hujsak Custom Fixie/Landshark Track Shark Custom/Ahearne Custom 29'er

I believe so, see above post, are the glow plugs the same part # between the two engines? If so, not an issue, just be careful, aren't the heads on a 603 aluminum?

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83 SD

84 CD

Yes, they are aluminum...

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1987 Mercedes 300SDL; SOLD
1985 Mercedes 300D; SOLD
2006 Honda Pilot - wife's ride; 122K;
1995 Toyota Land Cruiser - 3X locked; 182K