Type IV rebuild / refresh thread. Nothing ground breaking., Changing cam in low mileage rebuit 1.8, making it a little hotter! Oh yea! |
|
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. |
|
Type IV rebuild / refresh thread. Nothing ground breaking., Changing cam in low mileage rebuit 1.8, making it a little hotter! Oh yea! |
Mueller |
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. |
914werke |
Jul 10 2016, 09:57 PM
Post
#2
|
"I got blisters on me fingers" Group: Members Posts: 10,934 Joined: 22-March 03 From: USofA Member No.: 453 Region Association: Pacific Northwest |
Do I have to buy a new gear for the cam or can I remove the rivets on the original cam and the use bolts? I saw a straight cut gear in the classifieds....too loud? What about cutting a groove in it? And if I do use my original cam gear worth making it adjustable able? I also was curious about a straight cut cam gear. I happen to have one (IMG:style_emoticons/default/confused24.gif) Whats the advantage, if any? Also as Mike queried anyone made an adjustable gear to index the cam in the eng? |
McMark |
Jul 11 2016, 07:19 AM
Post
#3
|
914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
Do I have to buy a new gear for the cam or can I remove the rivets on the original cam and the use bolts? I saw a straight cut gear in the classifieds....too loud? What about cutting a groove in it? And if I do use my original cam gear worth making it adjustable able? I also was curious about a straight cut cam gear. I happen to have one (IMG:style_emoticons/default/confused24.gif) Whats the advantage, if any? Also as Mike queried anyone made an adjustable gear to index the cam in the eng? Straight cut cam gears are much louder, but take less HP to turn. The helical gears on a stock cam gear keep some tension on the system (hence the thrust bearing) as well as ease the contact between teeth by gradually bringin them together. There are adjustable gears available as well. But from what I've heard they can lose adjustment or go loose. If I wanted an 'adjustable' cam gear, I would buy one of the cheap ones, find the timing I wanted, and then index a regular cam gear to that new location. |
Lo-Fi Version | Time is now: 22nd November 2024 - 10:15 PM |
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 ... |