How to easily identify a 36mm Oil Pump - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.

• How to easily identify a 36mm Oil Pump by Fionn on 09 Jan, 2008 17:47
• Hi,
      I have two oil pumps to choose from on my rebuild, both are from late model (86' JP Code, Hydraulic Head) engines. I'm wondering if there's an easy way to tell if they're 36mm or not?
  Thanks in advance.
• #1 by CoolAirVw on 09 Jan, 2008 22:08
• Quote from: "libbybapa"

  Measure the gears... :wink:  

  
  
  
  
  
  
  
  
  
  
  
• #2 by Black Smokin' Diesel on 09 Jan, 2008 22:29
• 86->30mm pumps, 100% sure. VW started to use the 36mm units in late 87 early 88
• #3 by Fionn on 10 Jan, 2008 03:46
• Cool guys, thanks for the replies.
  I'll crack them both open to measure for sure. Would a 30mm if that's what I have be considered insufficient to supply both a hydraulic head and additional oil squirters on an originally NA engine?
• #4 by dillenger1 on 10 Jan, 2008 05:19
• So you guys are saying if you have a hydrolic head then you have the 36mm?
• #5 by Fionn on 10 Jan, 2008 06:39
• I dont think so, both my blocks are hydraulic (we got very few solid lifter heads here) and that would contradict what BSD has said above.
• #6 by somolovitch3 on 11 Jan, 2008 07:42
• Question, when is someone going to measure the outside of the 36 mm pump and compare it to the outside of a 30 mm pump?
  
  When at salvage yard quick and dirty is best! :twisted:
  
  Also, does the style of pick-up tube change with the year or with the size of the gears?
  
  tia
• #7 by zukgod1 on 11 Jan, 2008 12:13
• Quote from: "somolovitch3"

  Question, when is someone going to measure the outside of the 36 mm pump and compare it to the outside of a 30 mm pump?
  
  When at salvage yard quick and dirty is best! :twisted:
  
  Also, does the style of pick-up tube change with the year or with the size of the gears?
  
  tia

  
  
  The 36 mm pump is taller but I dont have one with me at the moment to compair.
  
  I still have a extra 36mm pump just sitting here if someone needs one.
• #8 by fatmobile on 14 Jan, 2008 06:05
• Quote

  Question, when is someone going to measure the outside of the 36 mm pump and compare it to the outside of a 30 mm pump?

  
  
  Measuring the outside of a pump won't tell you anything, in most cases.
   Some of the early pumps used shorter mounting bolts because the pump was so short.
   I have posted on here, somewhere on this forum pictures of a 30mm and 36mm pump side by side.
   edit: found http://vwdiesel.net/phpBB/viewtopic.php?t=7071&postdays=0&postorder=asc&highlight=oil+pump&start=30
• #9 by burnt_servo on 14 Mar, 2008 11:10
• Quote from: "Black Smokin' Diesel"

  86->30mm pumps, 100% sure. VW started to use the 36mm units in late 87 early 88

  
  
  neither the '88 engine in my car now , or the '90 engine i pulled out had the bigger oil pump .