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Injector Tip Dimension http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=5&t=59370	Page 1 of 1

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Author:	hopware [ Wed Mar 09, 2011 3:29 am ]
Post subject:	Injector Tip Dimension
My EGR cooler hoses finally gave up, world class engineering there, placing rubber bits in close proximity to hot bits! I figured I would replace the ceramic glow plugs with the metal ones. #3 came out first missing about 25 % of the tip, #4 & #2 were undamaged, and #1 was missing 50% of the tip. Sweet! Carbon build up on #3 leads me to think this was not a recent development. Lack of carbon on #1 is worrisome. I have access to a snap on borescope but the tip is about 9mm, too large for the glow plug hole. I would like to know the dimension of the injector tip to see if the borescope tip will fit through there. Thanks

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Author:	warp2diesel [ Thu Mar 10, 2011 8:15 am ]
Post subject:	Re: Injector Tip Dimension
I have not pulled my CRD injectors to check the tip size, but my old Perkins 354T had tips that were around 6mm to 7mm. My Wife's TDI tips are smaller. As injector technology advances they are getting smaller, not larger. I have no plans to pull my CRD injectors until I have to to have them rebuilt, but not being a gambler, I would willingly sucker bet that the CRD injector tips are closer in size to the TDI than the 6mm to 7mm on the old Perkins. One thing you could do is order an injector copper sealing washer which will be slightly larger than the tip. Looks like you better plan on pulling the cylinder head.

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Author:	Drewd [ Sat Mar 12, 2011 12:34 pm ]
Post subject:	Re: Injector Tip Dimension
The glowplug shaft (the portion of the glow plug that glows) is approximately 4.8 mm in diameter measured with a digital caliper this morning (Bosch ceramic) The end of the tip is tapered and much smaller

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