Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
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.
 

Welcome Guest ( Log In | Register )

> Bad valve lifter, which one is bad?
Elliot_Cannon
post Aug 22 2006, 07:19 PM
Post #1


Senior Member
***

Group: Retired Members
Posts: 1,922
Joined: 26-March 03
From: Orange County Ca
Member No.: 480
Region Association: None
Can you tell which one is my No. 4 exhaust lifter? It failed on the way home from the WCC. I just finished installing the ceramic ones. I hope they take care of a recuring problem.


Attached thumbnail(s)
Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
2 Pages V  1 2 >  
 Reply to this topicStart new topic
Replies(1 - 19)
type47
post Aug 22 2006, 07:27 PM
Post #2


Viermeister
****

Group: Members
Posts: 4,254
Joined: 7-August 03
From: Vienna, VA
Member No.: 994
Region Association: MidAtlantic Region
can you tell by looking which one is exhaust? i would say no but hopefully others will confirm or correct. i would think the only way to tell which is #4 exhaust is to know which lifter bore the lifters were removed from.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mueller
post Aug 22 2006, 07:31 PM
Post #3


914 Freak!
***************

Group: Members
Posts: 17,150
Joined: 4-January 03
From: Antioch, CA
Member No.: 87
Region Association: None
QUOTE(type47 @ Aug 22 2006, 06:27 PM) *

can you tell by looking which one is exhaust? i would so no but hopefully others will confirm or correct. i would think the only way to tell which is #4 exhaust is to know which lifter bore the lifters were removed from.



are you serious???? (IMG:style_emoticons/default/poke.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mueller
post Aug 22 2006, 07:32 PM
Post #4


914 Freak!
***************

Group: Members
Posts: 17,150
Joined: 4-January 03
From: Antioch, CA
Member No.: 87
Region Association: None
any damage to the pushrod?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
bd1308
post Aug 22 2006, 07:34 PM
Post #5


Sir Post-a-lot
*****

Group: Members
Posts: 8,020
Joined: 24-January 05
From: Louisville,KY
Member No.: 3,501
YIKES!
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Jake Raby
post Aug 22 2006, 07:37 PM
Post #6


Engine Surgeon
*****

Group: Members
Posts: 9,398
Joined: 31-August 03
From: Lost
Member No.: 1,095
Region Association: South East States
Seen it happen before, had it happen before an engine even fired up while adjusting valves on the bench.

Where did you source the lifters?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
type47
post Aug 22 2006, 07:38 PM
Post #7


Viermeister
****

Group: Members
Posts: 4,254
Joined: 7-August 03
From: Vienna, VA
Member No.: 994
Region Association: MidAtlantic Region
QUOTE(Mueller @ Aug 22 2006, 05:31 PM) *

QUOTE(type47 @ Aug 22 2006, 06:27 PM) *

can you tell by looking which one is exhaust? i would so no but hopefully others will confirm or correct. i would think the only way to tell which is #4 exhaust is to know which lifter bore the lifters were removed from.



are you serious???? (IMG:style_emoticons/default/poke.gif)


well actually i was. if you can tell what bore a lifter, out of the engine, came out of, 'splain it to me.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Elliot_Cannon
post Aug 22 2006, 07:40 PM
Post #8


Senior Member
***

Group: Retired Members
Posts: 1,922
Joined: 26-March 03
From: Orange County Ca
Member No.: 480
Region Association: None
QUOTE(type47 @ Aug 22 2006, 06:38 PM) *

QUOTE(Mueller @ Aug 22 2006, 05:31 PM) *

QUOTE(type47 @ Aug 22 2006, 06:27 PM) *

can you tell by looking which one is exhaust? i would so no but hopefully others will confirm or correct. i would think the only way to tell which is #4 exhaust is to know which lifter bore the lifters were removed from.



are you serious???? (IMG:style_emoticons/default/poke.gif)


well actually i was. if you can tell what bore a lifter, out of the engine, came out of, 'splain it to me.


The actual question was. Which one failed? It happened to be my no. 4 exhaust.

Elliot
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mueller
post Aug 22 2006, 07:42 PM
Post #9


914 Freak!
***************

Group: Members
Posts: 17,150
Joined: 4-January 03
From: Antioch, CA
Member No.: 87
Region Association: None
QUOTE(type47 @ Aug 22 2006, 06:38 PM) *


well actually i was. if you can tell what bore a lifter, out of the engine, came out of, 'splain it to me.


QUOTE
Can you tell which one is my No. 4 exhaust lifter? It failed on the way home from the WCC.


You don't notice anything "odd" about the lifter on the right??? (IMG:style_emoticons/default/biggrin.gif)



User is offlineProfile CardPM
Go to the top of the page
+Quote Post
type47
post Aug 22 2006, 07:46 PM
Post #10


Viermeister
****

Group: Members
Posts: 4,254
Joined: 7-August 03
From: Vienna, VA
Member No.: 994
Region Association: MidAtlantic Region
QUOTE(Mueller @ Aug 22 2006, 05:42 PM) *

QUOTE(type47 @ Aug 22 2006, 06:38 PM) *


well actually i was. if you can tell what bore a lifter, out of the engine, came out of, 'splain it to me.


QUOTE
Can you tell which one is my No. 4 exhaust lifter? It failed on the way home from the WCC.


You don't notice anything "odd" about the lifter on the right??? (IMG:style_emoticons/default/biggrin.gif)


sorry, i read the question as which of the 2 lifters shown in the picture came out of the #4 exhaust bore. i did suspect there was something up with the one on the right.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
SLITS
post Aug 22 2006, 07:46 PM
Post #11


"This Utah shit is HARSH!"
**********

Group: Benefactors
Posts: 13,602
Joined: 22-February 04
From: SoCal Mountains ...
Member No.: 1,696
Region Association: None
QUOTE(type47 @ Aug 22 2006, 06:38 PM) *

well actually i was. if you can tell what bore a lifter, out of the engine, came out of, 'splain it to me.


Since in the heading he said something to the effect of "can you tell which one is my bad #4 exhaust lifter" and he posted a pic of a good lifter and a bad lifter, uhhhhhhh.....duh! (IMG:style_emoticons/default/av-943.gif)

User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Elliot_Cannon
post Aug 22 2006, 07:47 PM
Post #12


Senior Member
***

Group: Retired Members
Posts: 1,922
Joined: 26-March 03
From: Orange County Ca
Member No.: 480
Region Association: None
QUOTE(Jake Raby @ Aug 22 2006, 06:37 PM) *

Seen it happen before, had it happen before an engine even fired up while adjusting valves on the bench.

Where did you source the lifters?


The engine was built by FAT Performance in Orange California. This is the third time this has happened. The first time, I had just installed the engine and 20 miles later the engine was back out of the car with lifter problems. I think they failed while still on the dyno. FAT has made good on everything and have been very supportive. The second time the No. 2 exhaust lifter collapsed and now the No.4. I hope the ceramic lifters cure this problem, as the thing runs great and produces good hp. I'm not sure where they got the lifters. I'll find out.
Cheers, Elliot
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Elliot_Cannon
post Aug 22 2006, 07:49 PM
Post #13


Senior Member
***

Group: Retired Members
Posts: 1,922
Joined: 26-March 03
From: Orange County Ca
Member No.: 480
Region Association: None
QUOTE(Mueller @ Aug 22 2006, 06:32 PM) *

any damage to the pushrod?


None at all. I had to tug on it a bit to get it out of the lifter.
Elliot
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
bd1308
post Aug 22 2006, 07:55 PM
Post #14


Sir Post-a-lot
*****

Group: Members
Posts: 8,020
Joined: 24-January 05
From: Louisville,KY
Member No.: 3,501
Elliot, lemme know who made those. You can ship me in a box to thier doorstep, and i'll take care of everything for you.

Once the lights go out, they'll never see whats coming.



b (IMG:style_emoticons/default/happy11.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
So.Cal.914
post Aug 22 2006, 08:02 PM
Post #15


"...And it has a front trunk too."
*****

Group: Members
Posts: 6,588
Joined: 15-February 04
From: Low Desert, CA./ Hills of N.J.
Member No.: 1,658
Region Association: None
QUOTE(type47 @ Aug 22 2006, 06:46 PM) *

QUOTE(Mueller @ Aug 22 2006, 05:42 PM) *

QUOTE(type47 @ Aug 22 2006, 06:38 PM) *


well actually i was. if you can tell what bore a lifter, out of the engine, came out of, 'splain it to me.


QUOTE
Can you tell which one is my No. 4 exhaust lifter? It failed on the way home from the WCC.


You don't notice anything "odd" about the lifter on the right??? (IMG:style_emoticons/default/biggrin.gif)


sorry, i read the question as which of the 2 lifters shown in the picture came out of the #4 exhaust bore. i did suspect there was something up with the one on the right.

I don't wish to insult you but you seem confused so here is a little back ground.

The lifter on the left, as you can see in the middle has a concave hole in it and

in the center of that is a hole. The push rod (which is convex on the end) end fits

in that hole, the other end of the lifter rides on the cam lobe. As the cam rotates

the lifter follows the lobe and moves in and out pushing on the push rod which

in turn moves the rocker arm opening and closeing the valve. The lifter on the

right has a big hole, no place for the posh rod to ride. I think you can figure it

out from here. (IMG:style_emoticons/default/smile.gif)


User is offlineProfile CardPM
Go to the top of the page
+Quote Post
type47
post Aug 22 2006, 08:07 PM
Post #16


Viermeister
****

Group: Members
Posts: 4,254
Joined: 7-August 03
From: Vienna, VA
Member No.: 994
Region Association: MidAtlantic Region
sorry, it's after 10 on the east coast and after a full day, didn't read all of the heading. i am somewhat familiar with the lifter, pushrod, rocker arrangement. thanks.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Twystd1
post Aug 22 2006, 08:14 PM
Post #17


You don't want to know... really.....
****

Group: Members
Posts: 2,515
Joined: 12-September 04
From: Newport Beach, California
Member No.: 2,743
Elliot,

How is the push rod / Rocker arm geometry coming along?

And did you source a new pusrod? The old one HAS to be smoked.

Did ya look at the push rod with a magnifying glass????????????

I know you know your shit Elliot....

I am just trying to be helpful...........

And cautious. Your engine runs SSssoooooooo good. I simply want to support you in doing it right..

Oh... I might have extra rocker shims if needed..................

Clayton
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Aaron Cox
post Aug 22 2006, 09:21 PM
Post #18


Professional Lawn Dart
***************

Group: Retired Admin
Posts: 24,541
Joined: 1-February 03
From: OC
Member No.: 219
Region Association: Southern California
ellyut....

i have an adjustable pushrod if you are doing it over (geometry)

rock out with your pushrods out!
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Twystd1
post Aug 22 2006, 09:42 PM
Post #19


You don't want to know... really.....
****

Group: Members
Posts: 2,515
Joined: 12-September 04
From: Newport Beach, California
Member No.: 2,743
Aaron......

Did you really say "rock out with your pushrod out"..???????????

Dude.... You and I have to have a pimp my ride kinda conversation....

Jew know???

Twystd1
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Aaron Cox
post Aug 22 2006, 09:46 PM
Post #20


Professional Lawn Dart
***************

Group: Retired Admin
Posts: 24,541
Joined: 1-February 03
From: OC
Member No.: 219
Region Association: Southern California
ROFL- you know it!

Aiiite, Da big EllYUT here wif my mota!
this flat hulk aint like no toyota!
swappin lifters, and pushrods out....
WTF did i do? give A-ron a shout....

so again, get out of the hammock, and play with your ceramic (IMG:style_emoticons/default/cool_shades.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · 914World Garage · Next Newest »
 

2 Pages V  1 2 >
Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 

Display Mode: Switch to: Standard · Linear+ · Switch to: Outline

Track this topic · Email this topic · Print this topic · Subscribe to this forum

- Lo-Fi Version Time is now: 27th December 2024 - 12:07 PM
Invision Power Board v9.1.4 © 2024  IPS, Inc.
All rights reserved 914World.com © since 2002
914World.com is the fastest growing online 914 community!
We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ...