 Got my Sunpro Digital Engine Analyzer CP7676, Sooo easy! Must Have! |
|
|
|
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. |
|
|
  |
| yarin |
 May 25 2005, 08:03 PM
Post
#1
|
|
'14-X'in FOOL  Group: Members Posts: 988 Joined: 13-May 03 From: Guttenberg, NJ Member No.: 693 Region Association: North East States  |
'72 914-4 Webers 40s, stock motor
I got my meter off ebay for $24, hooked it up right away and BAM. My dwell was set to 46 degrees after gaping it with a feeler gauge. So I nudged it a bit and BAM... 49 degrees. pretty damn good. RPM works like a charm as well. I'm thinking about setting up a temporary mount inside the car hardwired for voltage, rpm and dwell. I'm taking this piece of crap Craftsman Engine Analyzer back to Sears, what a waste of 50 bucks for an analog meter. Then I busted out the timing light with advance, held at 3k rpm and adjusted the distributor to line up with TDC. I briefly caught another mark, but the mark that i lined up with is immediately to the right of the large fin on the fan. Is this correct? I'll take it for a spin tommorow and see how it runs. Sounds much better than before though. After that i will adjust the valves, one of the cylinders keeps backfiring through the intake. Hopefully its a valve clearance issue. If i'm still having problems then i'm going to order a set of those carb flow meters and learn to tune carbs. This is all on my crappy engine. I want to get some experience on these Type IVs before i drop in my higher power motor. Is my sequence of tuning correct? 1) Dwell 2) Timing Advance 3) Valves 4) Carbs |
   |
 
|
| TimT |
May 25 2005, 08:26 PM
Post
#2
|
|
retired Group: Members Posts: 4,033 Joined: 18-February 03 From: Wantagh, NY Member No.: 313 |
valves first
|
|
|
|
| yarin |
May 26 2005, 10:19 AM
Post
#3
|
|
'14-X'in FOOL Group: Members Posts: 988 Joined: 13-May 03 From: Guttenberg, NJ Member No.: 693 Region Association: North East States |
|
|
|
|
| mistro |
May 26 2005, 05:11 PM
Post
#4
|
|
Member Group: Members Posts: 148 Joined: 12-March 04 From: Highland Park, IL Member No.: 1,786 Region Association: None |
|
|
|
|
| yarin |
May 26 2005, 06:18 PM
Post
#5
|
|
'14-X'in FOOL Group: Members Posts: 988 Joined: 13-May 03 From: Guttenberg, NJ Member No.: 693 Region Association: North East States |
Sorry.. this is the item i got:
http://cgi.ebay.com/ebaymotors/ws/eBayISAP...item=4550252741 I'm sure the other one will work just fine though. Mine is new in box, works like a charm. RPM is nice to have, but its a really slow refresh rate. I expected that though. good luck! |
|
|
|
| MecGen |
May 26 2005, 07:06 PM
Post
#6
|
|
8 Easy Steps Group: Members Posts: 848 Joined: 8-January 05 From: Laval, Canada Member No.: 3,421 |
Hi
A backfire thru the carb is usually a "lean" condition. try to hear what side is farting, start there, or your carbs might not be jetted right. Small backfires, I had also, got it 99% right by playing with jets. Good luck with it Later Joe (IMG:http://www.914world.com/bbs2/html/emoticons/beerchug.gif) |
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 8th May 2024 - 07:27 PM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.