 2056 Valvetrain question |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
| flipb |
 Sep 23 2013, 01:20 PM
Post
#1
|
|
Senior Member  Group: Members Posts: 1,766 Joined: 2-September 09 From: Fairfax, VA Member No.: 10,752 Region Association: MidAtlantic Region 
 |
Let me preface: I'm not a mechanic and I've never built an engine, so what I'm sharing below is secondhand from my engine builder...
We are in the midst of building my stock 2.0 into a 2056. I purchased 96mm Pistons & Cylinders from European Motorworks, along with new valves, cam, and various other hardware... EMW also cleaned/refurbished the heads and rods. My engine builder here in Virginia is a little bewildered by some of what EMW sold me. Specifically, he says that the alignment of the rockers & valves "sucks". The valve adjustment screw has to be turned all the way in, buried in the rocker, and it still looks like there will be severe wear. He suggested we might have the wrong lifters or need longer pushrods. Or there might be an alternative to use rockers from a 1.7 and/or something off a 911 with a ball & socket joint. I'm going to post the full invoice of what I bought from EMW -- perhaps someone can help me understand the issue, either from the notes above or by reviewing the parts list. Does this make sense or sound familiar to anyone? What's the right fix? I'm stuck in the middle of trying to get resolution from EMW for an issue I don't fully understand, but I want to see if anyone here might quickly spot the problem.  |
   |
 
|
  |
Replies
| TheCabinetmaker |
Sep 23 2013, 01:47 PM
Post
#2
|
|
I drive my car everyday Group: Members Posts: 8,320 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
The new cam has changed your valve train geometry.You need 1.7 rocker arms and 911 swivel feet adjusters (genuine Porsche only). You also need to determine the length of your new pushrods. I'm surprised your engine builder did not know this.
|
|
|
|
| flipb |
Sep 23 2013, 02:25 PM
Post
#3
|
|
Senior Member Group: Members Posts: 1,766 Joined: 2-September 09 From: Fairfax, VA Member No.: 10,752 Region Association: MidAtlantic Region
|
QUOTE(The Cabinetmaker @ Sep 23 2013, 03:47 PM)  The new cam has changed your valve train geometry.You need 1.7 rocker arms and 911 swivel feet adjusters (genuine Porsche only). You also need to determine the length of your new pushrods. I'm surprised your engine builder did not know this. Thank you! (IMG:style_emoticons/default/smilie_pokal.gif) Exactly what I was looking for. My builder does lots of 6 cyl rebuilds; not so many Type IV's. I'm surprised EMW didn't recommend these items. Anyone want to make my day really easy by posting the part numbers? (IMG:style_emoticons/default/smile.gif) |
|
|
|
Posts in this topic
flipb 2056 Valvetrain question Sep 23 2013, 01:20 PM
malcolm2 So you did not get new rockers assemblies, adjustm... Sep 23 2013, 01:29 PM Java2570 :agree: what Curt said..... Sep 23 2013, 01:51 PM The Cabinetmaker Use the chromoly pushrods. Then your valve clearan... Sep 23 2013, 02:52 PM Vacca Rabite Yep. Cabinetmaker nailed it.
EMW did not do it wi... Sep 23 2013, 03:10 PM stugray
That may be true, but the description from the O... Sep 23 2013, 03:13 PM
Vacca Rabite
That may be true, but the description from the ... Sep 23 2013, 03:18 PM Vacca Rabite Also, since you are upgrading valve train....
I di... Sep 23 2013, 03:16 PM bobhasissues I agree with Stugray.
Either the stock pushrods ar... Sep 23 2013, 03:47 PM malcolm2 I found this picture in a recent post. You see th... Sep 23 2013, 04:34 PM Racer Chris
Specifically, he says that the alignment of the r... Sep 23 2013, 04:48 PM Jake Raby This builder sounds like an "assembler".... Sep 23 2013, 08:21 PM r_towle
This builder sounds like an "assembler... Sep 23 2013, 08:26 PM flipb One more quick question:
At some point during dis... Sep 26 2013, 06:50 AM Dave_Darling Find a piece of tubing of the appropriate size, an... Sep 26 2013, 08:26 AM stugray
That is exactly what I was thinking. You should ... Sep 26 2013, 08:29 AM worn
My engine builder here in Virginia is a little be... Sep 26 2013, 09:56 AM stugray
Dont you mean: pedestals to low, pushrods too lo... Sep 26 2013, 10:19 AM worn
Dont you mean: pedestals to low, pushrods too l... Sep 26 2013, 10:56 AM stugray
Ahh... I think you are right. I was originally p... Sep 26 2013, 11:06 AM worn
Ahh... I think you are right. I was originally ... Sep 27 2013, 11:02 AM flipb Any confusion is my fault - I was furiously scribb... Sep 26 2013, 11:21 AM r_towle Is your mechanic local to you?
How close to DC met... Sep 26 2013, 11:31 AM flipb
Is your mechanic local to you?
How close to DC me... Sep 26 2013, 11:41 AM Jake Raby The valve train aspect of the -4 is the biggest di... Sep 28 2013, 03:34 PM |
15 User(s) are reading this topic (15 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 26th November 2024 - 01:46 PM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.