14mm head/plunger - page 1 - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.

• 14mm head/plunger by Dr. Diesel on 04 Jun, 2006 21:35
• I recently heard about there being 14mm heads available. I searched the bosch catalog top to bottom and the biggest I could find is 12mm. Curious, I sent this site's 14mm head supplier an email regarding this. No reply.
  I dug up a 12mm plunger and did some measuring.
  Check out the pic.
  The actual plunger part of the plunger is of course, 12mm. The base of the plunger is 14mm. Could this be confusing people into thinking a 12mm plunger is 14mm?
  
• #1 by malone on 04 Jun, 2006 22:56
• I'm pretty sure there isn't confusion between 12mm and 14mm.
  
  I've heard about 14mm from multiple sources and one of them is a pump shop who built a VW IDI w/ 14mm for some kind of machinery. Definitely low RPM for that application.
  
  Others can chime in here and verify the 12 vs. 14mm.
• #2 by Dr. Diesel on 05 Jun, 2006 07:33
• Any idea what manufacturer produces it?
• #3 by sebzero on 05 Jun, 2006 09:03
• http://www.diesel-speed-shop.com/index_fichiers/Page2023.htm :wink:
• #4 by RedRotors on 05 Jun, 2006 15:06
• 14mm are not a Myth.. One is coming down here in a few weeks. Caddy and me worked together to build the head.. 14mm is custom made.. Bosch stop at 12mm.
  
  I'll post pics..
  
  Marc/
  
  PS: Doc, drop me a line if you are interested by them..
• #5 by Dr. Diesel on 05 Jun, 2006 16:31
• aha! it all makes sense now.
  Thanks.
• #6 by 935racer on 05 Jun, 2006 18:11
• Ummm sent pm to redrotors... :twisted:
• #7 by hillfolk'r on 05 Jun, 2006 20:52
• id blow my smallshaft/12mm head pump apart with that...especially on my tdi-m,with the higher breakover of the tdi injectors...ive seen that plunger before... that thing is nuts,yeowie :twisted:
• #8 by RedRotors on 25 Jun, 2006 12:45
• Here's a couple pictures.. I only had a 12mm to compare, but you can easily see that this thing is HUGE and will pump a LOT of fuel..  :twisted:
  The 14 is on the right..  :wink:
  
  
  
  
  
  
  Nobody has this thing in NA, and Dave will be the first one to test it..   I would expect a lot of fuel and the need of fat injector.. Small holes will create too much back pressure.. I thing that 0.240 + will be needed as well as a fuel cooler.
  
  Cheers,
  Marc/
• #9 by Slave2School on 25 Jun, 2006 16:55
• What will the max sustainable RPM be?  and props for being so psycho
• #10 by Benjamin on 26 Jun, 2006 14:00
• gr8 stuff, i cant get it how to get this build...
  
  I thought 12mm breaks if it takes to high revs, ...
  
  Anyway, its pretty cool
  
  Greetz, Benjamin
• #11 by 935racer on 26 Jun, 2006 22:26
• WHOA... :shock:  Thats badass :twisted:  I will be honored to let you all in on the results from this beast. I am actually kinda scared... I think we now have enough fuel for 250WHP+. And I know I have enough air... My poor bottom end
  
  I'd hate to see a pic comparison of that 14mm and the stock 9mm, hey redrotors
• #12 by firestorm13666 on 28 Jun, 2006 20:07
• So what engine was it tested in and what kind of power did it make?
• #13 by RAMMSTEIN on 30 Jun, 2006 09:52
• RedRotors just got it and will ship it soon to BC.
  
  I saw it, it's massive! :shock:
• #14 by hillfolk'r on 30 Jun, 2006 17:57
• i still wonder if it would make my pump a real"time bomb",mines workin great still,i dont think its a problem putting a 12mm on a small shaft pump at all,people get all freaked out from like 1 story..
  i would maybe try it if this hy 35 deal goes real good+needs more fuel,,oh ill have some pics of the fabbed exhaust flanges soon......