mech lifters, more power? how? - page 2 - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.

• #15 by Dakotakid on 14 Feb, 2010 11:55
• The mechanical lifters do not go into hydro heads (answering the above question)...at least the stock ones do not.
  However, there is an aftermarket manufacturer who makes mech. lifters which fit the hydro bores nowdays. One of these guys can tell you where they are sold. I'm really thinking of going that route soon.
• #16 by NintendoKD on 14 Feb, 2010 12:00
• That is what I am going to do, just wanted to make sure they are worth my while, and the money spent getting them into the head.   I'm no idiot, I knew that they wouldn't just slide right in and work *dur dur DUR!*
• #17 by NintendoKD on 14 Feb, 2010 12:12
• this is from saukraut's thread, the link for mech lifters for hydro heads is here:
  http://www.crespocams.com/servlet/Categories?category=Cam+Lifters%3AMechanic
  
  under the detailed information tab in the item description it says: and I quote
  PART NUMBER:   ML-VW8v35   MECHANIC FOLLOWER CONVERTION SET
  Manufacturer:   CrespoCams
  For Engine Codes:   ALL Audi, Vw & Ford 8v with Hydro Lifters
  Do i have to machine the head?:   NO
  Is a direct replacement part?:   YES
  Can i use stock valve springs?:   YES
  Are Top Shims Included?:   NO
  Which widths of shims are offered?:   From 2.75mm to 4.80mm in 0.05mm steps.
  Which is the diameter of the shims?:   31mm (1.220")
  Follower Outside Diameter:   34.96mm (1.376")
  Follower Height:   25.90 (1.020")
  Follower Weight :   59 grams
  MSRP:   $125.95 + S&H
• #18 by MJF on 14 Feb, 2010 12:33
• You will need mech camshaft too, profiles are different.
• #19 by NintendoKD on 14 Feb, 2010 17:26
• This is on an aaz? saurkraut did this, I do not remember him saying anything about a different camshaft, I'll check again.   I wanna keep my aaz camshaft, I don't wanna do anything else with the head*temper tantrum*
  
  
• #20 by truckinwagen on 14 Feb, 2010 17:31
• are hydro lifters a different diameter than mech ones?
  
  I know the stack height is different, but why could you not put lash caps in to make up the difference?
• #21 by NintendoKD on 14 Feb, 2010 17:51
• I just sent a message to saurkraut, he's currently not online, but I hope to recieve an answer fom him soon on just thes types of questions. Hold still and don't move or I might cut off your ear JK.    The way it reads in his thread all of his modification was for naught because of the mech lifters that are made for just this application.  In other words no head modification machining or what have you....... I think time, and saurkraut himself, will tell.
  
  thanks guys,
  
  Kevin
• #22 by MJF on 14 Feb, 2010 20:26
• Lifters are same diameter, but there is ~10mm difference in height. So no for lash caps. You can use hydr cam, but it will be loud.
• #23 by NintendoKD on 14 Feb, 2010 20:27
• It's a diesel..... just how quiet is it suposed to be?
• #24 by NintendoKD on 14 Feb, 2010 20:32
• ok, seriously now, is there a mech cam for the aaz? or a way to do it without my engine blowing up?
• #25 by truckinwagen on 14 Feb, 2010 20:33
• why no to the lash caps?
  if there is a 10mm difference in height, why not make 10mm thick lash caps to make up the difference?
• #26 by NintendoKD on 14 Feb, 2010 20:34
• yeah, what he said
• #27 by Vincent Waldon on 14 Feb, 2010 20:45
• Quote from: NintendoKD on 14 Feb, 2010 20:32

  ok, seriously now, is there a mech cam for the aaz?
  

  
  VW abandoned mechanical lifters long before the AAZ engine was made... so at least for North America I'd be pretty sure the answer is "no". Can't speak to engines that may have been available in Europe, and perhaps there's an industrial version of the AAZ out there with mechanical lifters.
  
  Completely unsolicited opinion: it's absolutely your engine and your build... but it seems to me there's an awful lot of angst and expense around grabbing what's likely to be 1/2 a hp or so..(you're going to need to invest in a shim kit and two special tools to go along with your mechanical lifters) and you're committing to increased maintenance (one of the main reasons most manufacturers moved to hydraulic lifters).  A different way to look at it: that same cash might get you an upgraded intercooler, bigger exhaust, bigger turbo, or a large part of the way towards a Giles pump... something with much more substantial hp gains associated with it.
  
  As I said, completely unsolicited opinion... and worth exactly what you paid for it!!!!!    
• #28 by NintendoKD on 14 Feb, 2010 20:59
• thanks vince
• #29 by MJF on 14 Feb, 2010 21:39
• Quote from: NintendoKD on 14 Feb, 2010 20:32

  ok, seriously now, is there a mech cam for the aaz?

  
  1,5, 1,6 or custom cam.