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 )

6 Pages V  1 2 3 > »   
 Reply to this topicStart new topic
> Type IV rebuild / refresh thread. Nothing ground breaking., Changing cam in low mileage rebuit 1.8, making it a little hotter! Oh yea!
Mueller
post Jun 29 2016, 02:47 PM
Post #1


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

Group: Members
Posts: 17,150
Joined: 4-January 03
From: Antioch, CA
Member No.: 87
Region Association: None
I popped the heads off in order to remove the broken exhaust studs (one per cylinder)

(I wrote broken head studs....I meant exhaust studs)

Stock camshaft has some strange wear patterns on it which might be part of the previous owner problems with the motor.


Cam will be a 9600 grind from Rabys old store

Intake planned is stock L-Jet, however I can be swayed to install Megasquirt (plenum or ITB) since I already have the Megasquirt.

Exhaust is older European Racing Header.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
stugray
post Jun 29 2016, 02:58 PM
Post #2


Advanced Member
****

Group: Members
Posts: 3,825
Joined: 17-September 09
From: Longmont, CO
Member No.: 10,819
Region Association: None
you can measure the valve travel without even taking the rockers off.

To actually get at the cam to change it, you have to split the case, now the "what should I replace?" comes down to 1 - your budget & 2 - what you find.

In either order.

You can inspect & measure all the 'pertinents' and decide if anything is worn.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Gunn1
post Jun 29 2016, 02:59 PM
Post #3


Senior Member
***

Group: Members
Posts: 1,021
Joined: 14-February 16
From: Minnesota
Member No.: 19,670
Region Association: None
Did you try the search function ?

You will find mucho Grande info on this subject there.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mueller
post Jun 29 2016, 03:06 PM
Post #4


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

Group: Members
Posts: 17,150
Joined: 4-January 03
From: Antioch, CA
Member No.: 87
Region Association: None
QUOTE(stugray @ Jun 29 2016, 01:58 PM) *

you can measure the valve travel without even taking the rockers off.

The actually get at the cam to change it, you have to split the case, now the "what should I replace?" comes down to 1 - your budget & 2 - what you find.

In either order.

You can inspect & measure all the 'pertinents' and decide if anything is worn.


Not really looking into splitting case, for some odd reason I was thinking cam came out without do that, been too long.

Oh well, I'll still measure it yet chances are it's going to stay unless that camshaft mentioned earlier would really offer some improvements.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
JFJ914
post Jun 29 2016, 03:11 PM
Post #5


Senior Member
***

Group: Benefactors
Posts: 813
Joined: 13-June 03
From: Alpharetta, GA
Member No.: 814
Region Association: South East States
Jake doesn't sell parts anymore, only turnkey engines. The Type IV store is now owned by LN Engineering.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Gunn1
post Jun 29 2016, 03:16 PM
Post #6


Senior Member
***

Group: Members
Posts: 1,021
Joined: 14-February 16
From: Minnesota
Member No.: 19,670
Region Association: None
I think Jake uses the search function .

Be like Jake.......
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
rhodyguy
post Jun 29 2016, 03:21 PM
Post #7


Chimp Sanctuary NW. Check it out.
***************

Group: Members
Posts: 22,192
Joined: 2-March 03
From: Orion's Bell. The BELL!
Member No.: 378
Region Association: Galt's Gulch
Saw that one coming 1/2 hour ago. Funny. No quotes required.

Mike, have you tried contacting LN/type4 store directly with the cam #s you have? Does the site list a phone #? Edit: I checked. you should call type4 support
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mueller
post Jun 29 2016, 03:48 PM
Post #8


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

Group: Members
Posts: 17,150
Joined: 4-January 03
From: Antioch, CA
Member No.: 87
Region Association: None
QUOTE(John Jentz @ Jun 29 2016, 02:11 PM) *

Jake doesn't sell parts anymore, only turnkey engines. The Type IV store is now owned by LN Engineering.



I'd think he'd still have the specs to the older stuff he sold.

Cam is not listed on Store website. I could call them tomorrow, might be something not usually offered.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mueller
post Jun 29 2016, 03:49 PM
Post #9


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

Group: Members
Posts: 17,150
Joined: 4-January 03
From: Antioch, CA
Member No.: 87
Region Association: None
QUOTE(OU812 @ Jun 29 2016, 01:59 PM) *

Did you try the search function ?

You will find mucho Grande info on this subject there.


Yes, yes I did...feel free to search 9600 for the specs. I asked after I couldn't find the specs!
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
rhodyguy
post Jun 29 2016, 04:20 PM
Post #10


Chimp Sanctuary NW. Check it out.
***************

Group: Members
Posts: 22,192
Joined: 2-March 03
From: Orion's Bell. The BELL!
Member No.: 378
Region Association: Galt's Gulch
Unless somebody had their NEW cam read, those details are probably proprietary knowledge.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Gunn1
post Jun 29 2016, 05:49 PM
Post #11


Senior Member
***

Group: Members
Posts: 1,021
Joined: 14-February 16
From: Minnesota
Member No.: 19,670
Region Association: None
QUOTE(Mueller @ Jun 29 2016, 04:49 PM) *

QUOTE(OU812 @ Jun 29 2016, 01:59 PM) *

Did you try the search function ?

You will find mucho Grande info on this subject there.


Yes, yes I did...feel free to search 9600 for the specs. I asked after I couldn't find the specs!


Just messin with ya
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Chris H.
post Jun 29 2016, 06:05 PM
Post #12


Senior Member
****

Group: Members
Posts: 4,048
Joined: 2-January 03
From: Chicago 'burbs
Member No.: 73
Region Association: Upper MidWest
If Jake doesn't see this just call Charles at LN Engineering. He owns the Type 4 Store now. phone: 815-472-2939. Super nice guy.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
r_towle
post Jun 29 2016, 06:47 PM
Post #13


Custom Member
***************

Group: Members
Posts: 24,645
Joined: 9-January 03
From: Taxachusetts
Member No.: 124
Region Association: North East States
Mike,

Go to Elgin camshafts and look at what he sells.
Lift ramp is most of what you can change .
He has one that will work.

Split the case, it will make drilling out the head studs easier to jig up.
Plus, you cannot replace the camshaft without doing that .
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Valy
post Jun 29 2016, 08:44 PM
Post #14


Senior Member
***

Group: Members
Posts: 1,677
Joined: 6-April 10
From: Sunnyvale, CA
Member No.: 11,573
Region Association: Northern California
How long did the motor run with broken head studs?
I would suspect the cylinders are out of round.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mueller
post Jun 29 2016, 10:01 PM
Post #15


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

Group: Members
Posts: 17,150
Joined: 4-January 03
From: Antioch, CA
Member No.: 87
Region Association: None
Exhaust studs broken, not head studs.....
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
r_towle
post Jun 29 2016, 10:13 PM
Post #16


Custom Member
***************

Group: Members
Posts: 24,645
Joined: 9-January 03
From: Taxachusetts
Member No.: 124
Region Association: North East States
QUOTE(Mueller @ Jun 30 2016, 12:01 AM) *

Exhaust studs broken, not head studs.....

You are a nice guy to make sure we don't think we are nuts...
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
stugray
post Jun 29 2016, 10:58 PM
Post #17


Advanced Member
****

Group: Members
Posts: 3,825
Joined: 17-September 09
From: Longmont, CO
Member No.: 10,819
Region Association: None
QUOTE(Mueller @ Jun 29 2016, 10:01 PM) *

Exhaust studs broken, not head studs.....


maybe contact saigon71 and see this thread:

http://www.914world.com/bbs2/index.php?showtopic=248544
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mueller
post Jun 30 2016, 10:57 AM
Post #18


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

Group: Members
Posts: 17,150
Joined: 4-January 03
From: Antioch, CA
Member No.: 87
Region Association: None
I called LN Engineering, they found the specs for the cam I have sitting around...

Lift:
I .335
E .400

Duration:
290 I/E

Duration @ .050:
I 252
E 254

108 Lobe center.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
stugray
post Jun 30 2016, 11:23 AM
Post #19


Advanced Member
****

Group: Members
Posts: 3,825
Joined: 17-September 09
From: Longmont, CO
Member No.: 10,819
Region Association: None
QUOTE(Mueller @ Jun 30 2016, 10:57 AM) *

I called LN Engineering, they found the specs for the cam I have sitting around...

Lift:
I .335
E .400

Duration:
290 I/E

Duration @ .050:
I 252
E 254

108 Lobe center.


That is the lift at the cam.
edit - not even sure of that. The #s look wrong. Is that at the cam or at the valves?

While you have his attention, could you please ask what lift he expects with that cam at the valves?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mark Henry
post Jun 30 2016, 01:22 PM
Post #20


that's what I do!
***************

Group: Members
Posts: 20,065
Joined: 27-December 02
From: Port Hope, Ontario
Member No.: 26
Region Association: Canada
QUOTE(Mueller @ Jun 30 2016, 12:57 PM) *

I called LN Engineering, they found the specs for the cam I have sitting around...

Lift:
I .335
E .400

Duration:
290 I/E

Duration @ .050:
I 252
E 254

108 Lobe center.


The 290 duration number is odd.
Look at the WEB 73 numbers in the link below:
http://vwparts.aircooled.net/Web-Cam-Type-...72-p/00-472.htm

WEB 73 is a FI grind but IIRC it has bit more lift. If you want L-Jet you need an stock based FI grind like the 73.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · 914World Garage · Next Newest »
 

6 Pages V  1 2 3 > » 
Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 

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

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

- Lo-Fi Version Time is now: 22nd November 2024 - 06:05 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 ...