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Engine Specific Info and Questions => IDI Engine => Topic started by: scopefrfd on October 02, 2006, 08:01:20 pm

Title: 10mm tdi Pump head Timing plug, can't set timing
Post by: scopefrfd on October 02, 2006, 08:01:20 pm

I just swapped in a 10mm tdi pump head and the timing plug hole is bigger than the standard 9mm idi pump head timing plugs. I can't set the injection timing because the adapter for my dial indicator is to small.  I know this issue must have come up before...is there a threaded bushing adapter for the bigger tdi pump heads?

Title: 10mm tdi Pump head Timing plug, can't set timing
Post by: macsdub on October 02, 2006, 08:54:37 pm

my  pump guy took the stock center thingee  that bolts in the pump head from my 9mm head and transferred it to the 12mm head
the piece im talking about is the bigger piece that the little bolt threads into that you remove to check the timing
hope i didnt confuse you
he asked me"hey do i need to swap this so you can set your timing with the vw guage? "i said hell yes,thank you :wink:

Title: 10mm tdi Pump head Timing plug, can't set timing
Post by: scopefrfd on October 03, 2006, 03:15:20 am

YEs I have the hub but I do no thave the tool to remove it...

Title: 10mm tdi Pump head Timing plug, can't set timing
Post by: Baxter on October 03, 2006, 03:35:54 pm

My timing set has adapters for both the IDI and TDI pump heads.
Im fairly sure the thread of the TDI is M10x1 as I made a home brew adapter from a brake union., a bit of brake pipe and a bit of welding rod! Not pretty but worked until my new set came!

Title: 10mm tdi Pump head Timing plug, can't set timing
Post by: andy2 on October 03, 2006, 07:56:46 pm

I know its not the best way of doing this,However if you have someone holding the gage/adapter into the pump then you don't need to worry about the bigger thread dia.I've done this myself before its not fun but will work in a pinch :wink:

Title: 10mm tdi Pump head Timing plug, can't set timing
Post by: andy2 on October 03, 2006, 07:59:54 pm

I seem to remember there being an issue with swaping the different style cap's that thread into the head.I just recall that swaping them wasn't an option when I ran into the same issue??

Title: 10mm tdi Pump head Timing plug, can't set timing
Post by: macsdub on October 03, 2006, 08:21:54 pm

mine swapped onto my 12mm head