 Cam gear, Replacing the cam need to order a gear |
|
|
|
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. |
|
|
  |
| jsaum |
 Jan 9 2019, 10:27 PM
Post
#1
|
|
Senior Member  Group: Members Posts: 530 Joined: 12-June 07 From: Everett, WA Member No.: 7,809 Region Association: None  |
How do you know what gear to buy to match to the gear on the crank shaft?
|
   |
 
|
| IronHillRestorations |
Jan 10 2019, 12:06 AM
Post
#2
|
|
I. I. R. C. Group: Members Posts: 6,712 Joined: 18-March 03 From: West TN Member No.: 439 Region Association: None 
|
The stock cam gear is fixed to the cam with rivets, and generally speaking not replaced. You need a new cam and lifters, which depending on your engine is probably a good idea if you've got the case split.
|
|
|
|
| jsaum |
Jan 10 2019, 12:23 AM
Post
#3
|
|
Senior Member Group: Members Posts: 530 Joined: 12-June 07 From: Everett, WA Member No.: 7,809 Region Association: None |
I have the new cam from webcam and their lifters. Is there different pitch to the gears that need to be matched to the crank gear or does the standard gear work for all?
|
|
|
|
| barefoot |
Jan 10 2019, 06:42 AM
Post
#4
|
|
Senior Member Group: Members Posts: 1,268 Joined: 19-March 13 From: Charleston SC Member No.: 15,673 Region Association: South East States
|
Webcam offers a new cam gear, only 1 version used.
|
|
|
|
| Mark Henry |
Jan 10 2019, 07:58 AM
Post
#5
|
|
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(jsaum @ Jan 10 2019, 01:23 AM)  I have the new cam from webcam and their lifters. Is there different pitch to the gears that need to be matched to the crank gear or does the standard gear work for all? Factory cam gears came in different +/- pitches to compensate for tooling wear during production. The replacement new gears are only available as a zero gear. Most of the time the zero gear works. When I install a cam I install the crank and cam (nothing else) I turn over the crank and look to see if the cam lifts out of the DT bearing saddle, if loose I check for backlash. If it lifts out I put one finger on the DT cam journal, turn the crank, if it stays put with light pressure it's still OK. The very odd time I need a +/- I pick one from my stock of used gears, which I have to modify (pump/cam bolt clearance) for the aftermarket cam. I rarely have to do this, but I have a T1 on the bench right now that will need a modified used minus gear. |
|
|
|
| IronHillRestorations |
Jan 10 2019, 08:02 AM
Post
#6
|
|
I. I. R. C. Group: Members Posts: 6,712 Joined: 18-March 03 From: West TN Member No.: 439 Region Association: None
|
Mark Henry knows his stuff!
|
|
|
|
| jsaum |
Jan 10 2019, 03:16 PM
Post
#7
|
|
Senior Member Group: Members Posts: 530 Joined: 12-June 07 From: Everett, WA Member No.: 7,809 Region Association: None |
QUOTE(Mark Henry @ Jan 10 2019, 05:58 AM) QUOTE(jsaum @ Jan 10 2019, 01:23 AM) I have the new cam from webcam and their lifters. Is there different pitch to the gears that need to be matched to the crank gear or does the standard gear work for all? Factory cam gears came in different +/- pitches to compensate for tooling wear during production. The replacement new gears are only available as a zero gear. Most of the time the zero gear works. When I install a cam I install the crank and cam (nothing else) I turn over the crank and look to see if the cam lifts out of the DT bearing saddle, if loose I check for backlash. If it lifts out I put one finger on the DT cam journal, turn the crank, if it stays put with light pressure it's still OK. The very odd time I need a +/- I pick one from my stock of used gears, which I have to modify (pump/cam bolt clearance) for the aftermarket cam. I rarely have to do this, but I have a T1 on the bench right now that will need a modified used minus gear. Thanks, that's the info I needed. |
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 17th April 2024 - 06:55 PM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.