mech lifters, more power? how?

[Dakotakid]

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.

[NintendoKD]

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!*

[NintendoKD]

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

[MJF]

You will need mech camshaft too, profiles are different.

[NintendoKD]

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*

[truckinwagen]

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?

[NintendoKD]

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

[MJF]

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.

[NintendoKD]

It's a diesel..... just how quiet is it suposed to be?

[NintendoKD]

ok, seriously now, is there a mech cam for the aaz? or a way to do it without my engine blowing up?

[truckinwagen]

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?

[NintendoKD]

yeah, what he said

[Vincent Waldon]

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!!!!!    

[NintendoKD]

thanks vince

[MJF]

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

1,5, 1,6 or custom cam.