Search



Go Back   Third Generation F-Body Message Boards > Tech Boards > Tech / General Engine
Register Forgot Password?

Tech / General Engine Is your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!
Sponsored by Weld Racing
Click Here

Welcome to ThirdGen.org!
Welcome to ThirdGen.org.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join the ThirdGen.org community today!


Reply
 
Thread Tools Search this Thread
Old 05-03-2003, 12:16 AM   #1
Supreme Member
 
Join Date: Sep 2000
Location: Lake Villa, IL
Posts: 1,220

Classifieds Rating: (0)

How much does timing have an effect on power???

My setup is in the sig. I have the adjustable billet MSD distributor with mechanical advance. I have the base timing at 8 degrees, and it currently has the weakest possible curve, as that is what the factory sent with the distributor. I was just curious as to how much changing the advance springs and base timing would affect my power. I'm pretty sure my carb is close to being dialed in, and it just doesn't feel as fast as it should. Any help would be greatly appreciated. Thanks.
__________________
Rebuilt 355, AFR 195cc heads, Comp 230/236 @.050 cam, Edelbrock Performer RPM intake manifold, Speed Demon 750 CFM carb, MSD 6AL ignition
Pro-Built 700R4 trans, Strange 3.73 posi rear, Spohn sub frame connectors, lower control arms w/brackets, adjustable torque arm
CamaroX84 is offline vBGarage Page   Reply With Quote
Old 05-03-2003, 12:44 AM   #2
Senior Member
 
Join Date: Jun 2002
Location: Walla Walla Washington
Posts: 751

Classifieds Rating: (0)

Send a message via AIM to radiateu2 Send a message via Yahoo to radiateu2
I have 12 degrees advance initially on my 305 I have my distributor set with one weak and one medium spring to have all my advance in by 3,000 rpm. Believe it or not these small block like a lot of advance timing. I initially started out with 16 advance and some detonation so I backed it down to 12 without detnation and felt a significant increase in power and my engine didnt run as rich too. advancing your timing and adjusting the curve in the distributor is one of the cheapest mods with proven performane you can do just ask f-bird88 and rb83l69. They helped me out with this too incase you dont know it they are the ones who know there stuff around here along with a few others
radiateu2 is offline vBGarage Page   Reply With Quote
Old 05-03-2003, 08:54 AM   #3
Supreme Member
 
Cruz'N Bruz'R's Avatar
 
Join Date: Sep 2001
Location: Cincinnati, OH
Posts: 2,030
Car: 87 Iroc Z
Engine: 383ci.
Transmission: WC-T5

Classifieds Rating: (0)

Alot. But base timing means half as much as total timing.
I need to get a curve kit to get my total timing up.
Cruz'N Bruz'R is offline vBGarage Page   Reply With Quote
Old 05-03-2003, 08:34 PM   #4
Supreme Member
 
Join Date: Sep 2000
Location: Lake Villa, IL
Posts: 1,220

Classifieds Rating: (0)

Well folks, I just answered my own question. I swapped in the red (28 degrees) stop bushing and the two light blue springs (3rd from most aggressive timing curve) and I boosted the base timing to 11 degrees. It definitely pulls a lot harder. The changable springs/bushings are invaluable.
CamaroX84 is offline vBGarage Page   Reply With Quote
Old 05-03-2003, 09:49 PM   #5
Member
 
Join Date: Mar 2002
Location: Closter NJ (Bergen County)
Posts: 304

Classifieds Rating: (0)
Send a message via AIM to 86IROC350NY
how bout me

The guys at the autobody changed springs and ran a timing light in front of me. 13 degrees initial, with 58* total. That seems really high, but they said SBCs liked a lot of advance and especially with big cams...NOW THE DAMN THING IS BACKFIRING THRU THE INTAKE (read my thread). I don't know, but anything over 40 on high octane gas would be pushing it.
__________________
Dan Ciccarelli
86 IROC Z-28, T-5, 3.73
Gen I Crate 350, Holley 670 SA /Keith Dorton Single Plane intake,, Edelbrock 1" Spacer, Copper core wires, Ported (by Brodix) TFS Twisted Wedge G2 Heads deck to 62cc chambers, Comp XE284 Hyd Cam, Comp Pro Magmum Roller rockers (1.52 exh/1.6 int), Comp Hi-tech Chromoly Pushrods, Pete Jackson Timing gears, 12degrees initial timing, 58 degrees total, Lakewood Traction bars, Edel Strut tower brace, GR-2 Shocks and Struts, Competition Engineering SFCs, MSD Pro Billet Distributor, MSD 6AL Hei Kit, X-Stream Air Filter, Summit Headers, No cat/smog pump, Flowmaster exhaust. Dark blue with tints. FULLY Redone interior red/black with 96 Camaro Seats.
86IROC350NY is offline vBGarage Page   Reply With Quote
Old 05-03-2003, 10:03 PM   #6
Senior Member
 
Join Date: Mar 2001
Location: Silverhill,Al
Posts: 833
Car: 92 Camaro RS
Engine: 305 TBI
Transmission: T-5

Classifieds Rating: (0)

58 TOTAL!!!!, you need to find new mechanics. 36 to 40 is the most I have ever heard of running.
__________________
92 Camaro RS 5.0 5-Speed (Quasar Blue)
DartByU is offline vBGarage Page   Reply With Quote
Old 05-03-2003, 10:06 PM   #7
Senior Member
 
Join Date: Jun 2002
Location: Walla Walla Washington
Posts: 751

Classifieds Rating: (0)

Send a message via AIM to radiateu2 Send a message via Yahoo to radiateu2
I had the same problem to much total timing Does it ping at all underload? 45 total advance was too much for me I am at 40 now with no problems. Try one light and one medium spring your initial advance seems to be in the ballpark. Make sure you disconnect and plug the vaccum advance when setting the timing
radiateu2 is offline vBGarage Page   Reply With Quote
Old 05-03-2003, 10:26 PM   #8
Member
 
Join Date: Mar 2002
Location: Closter NJ (Bergen County)
Posts: 304

Classifieds Rating: (0)
Send a message via AIM to 86IROC350NY
ping..don't know

I haven't really heard...the timing gears are so loud Anyways, I told them to fix the timing, but they are being stubborn. I think it might be pinging.

--Dan
__________________
Dan Ciccarelli
86 IROC Z-28, T-5, 3.73
Gen I Crate 350, Holley 670 SA /Keith Dorton Single Plane intake,, Edelbrock 1" Spacer, Copper core wires, Ported (by Brodix) TFS Twisted Wedge G2 Heads deck to 62cc chambers, Comp XE284 Hyd Cam, Comp Pro Magmum Roller rockers (1.52 exh/1.6 int), Comp Hi-tech Chromoly Pushrods, Pete Jackson Timing gears, 12degrees initial timing, 58 degrees total, Lakewood Traction bars, Edel Strut tower brace, GR-2 Shocks and Struts, Competition Engineering SFCs, MSD Pro Billet Distributor, MSD 6AL Hei Kit, X-Stream Air Filter, Summit Headers, No cat/smog pump, Flowmaster exhaust. Dark blue with tints. FULLY Redone interior red/black with 96 Camaro Seats.
86IROC350NY is offline vBGarage Page   Reply With Quote
Old 05-03-2003, 10:33 PM   #9
Senior Member
 
Join Date: Jun 2002
Location: Walla Walla Washington
Posts: 751

Classifieds Rating: (0)

Send a message via AIM to radiateu2 Send a message via Yahoo to radiateu2
Or you can get a kit from any parts store and do it yourself It is easy. But if you payed someone to fix it right the first time........... "and now you know the rest of the story" Paul Harvey
radiateu2 is offline vBGarage Page   Reply With Quote
Old 05-04-2003, 12:59 PM   #10
Junior Member
 
Join Date: Dec 2000
Location: Madison Heights, MI, U.S.A.
Posts: 81

Classifieds Rating: (0)

Send a message via ICQ to 1982Camaro383 Send a message via AIM to 1982Camaro383 Send a message via Yahoo to 1982Camaro383
what size is the locknut washer holding the advance stop bushing. I am changing it as well
1982Camaro383 is offline vBGarage Page   Reply With Quote
Old 05-04-2003, 04:52 PM   #11
Supreme Member
 
Join Date: Sep 2000
Location: Lake Villa, IL
Posts: 1,220

Classifieds Rating: (0)

Use an 11/32" wrench on the nut for the bushing. Be careful not to drop ANYTHING. I used a tiny dot of super glue between the nut and the washer (NOT the washer and the bushing) to hold them together while I installed it back on. Hope this helps.
CamaroX84 is offline vBGarage Page   Reply With Quote
Old 05-04-2003, 04:55 PM   #12
Junior Member
 
Join Date: Dec 2000
Location: Madison Heights, MI, U.S.A.
Posts: 81

Classifieds Rating: (0)

Send a message via ICQ to 1982Camaro383 Send a message via AIM to 1982Camaro383 Send a message via Yahoo to 1982Camaro383
whats the easiest way to get to it, besides pulling distributor, since you can see what your doing only feel.
1982Camaro383 is offline vBGarage Page   Reply With Quote
Old 05-04-2003, 04:56 PM   #13
Junior Member
 
Join Date: Dec 2000
Location: Madison Heights, MI, U.S.A.
Posts: 81

Classifieds Rating: (0)

Send a message via ICQ to 1982Camaro383 Send a message via AIM to 1982Camaro383 Send a message via Yahoo to 1982Camaro383
can't see what your doing sorry typo
1982Camaro383 is offline vBGarage Page   Reply With Quote
Old 05-04-2003, 09:36 PM   #14
Supreme Member
 
Join Date: Sep 2000
Location: Lake Villa, IL
Posts: 1,220

Classifieds Rating: (0)

Well, the first thing you need to do is find a good angle that you'd want to do it at. If you don't like where your distributor is positioned, stick your key in the ignition, and give it a light "tap" to turn it until it's where you want it. Then use the wrench to pull the nut, but be careful because behind the nut is a flat washer and then the bushing. It's easy to drop the stuff. Then put a tiny tiny dap of super glue between the flat washer and the nut. Doing this will allow you to not have to hold the washer up there while putting the nut on. Hold the bushing up there then try to turn the washer/nut on. That should be it. Let me know if you have any other questions.
CamaroX84 is offline vBGarage Page   Reply With Quote
Old 05-04-2003, 10:30 PM   #15
Member
 
Idlehands's Avatar
 
Join Date: Sep 2002
Location: Cambridge
Posts: 446
Car: 1985 Trans Am
Transmission: 5 Speed

Classifieds Rating: (0)
so for those of us that have never advanced the timing let alone have a timing light, can anyone explain the procedure? and is it possible without a light?
Idlehands is offline vBGarage Page   Reply With Quote
Old 05-05-2003, 12:04 AM   #16
Senior Member
 
Join Date: Apr 2002
Location: Massachusetts
Posts: 664

Classifieds Rating: (0)
How high should one go with the initial and total advance.? Im assuming it depends on the motor. I set my initial advance to 15deg and the total I believe is 36. This is measured at what RPM-- 3000 right?? All mods in sig. I want to really unleash the motor with a little tuning before I race wed. Thanks
__________________
1988 GTA Notchback (Original)
383 Stroker Engine
Eagle forged rotating assembly
JE Forged Pistons 11.5:1 Cr
Lunati Roller Cam .606/.585
Dur @ .050 248/252
Dart Pro 1 230cc Aluminum Heads
Ferrea Valves 2.08/1.60
Comp 1.5 pro magnum roller rockers
Victor Jr. Intake w/Holley 750 Double Pumper
Stewart Stage II water pump
March serpentine belt pulleys
Moser Ford 9" rear w/ 4:11s
Turbo 400 w/ ACT 5000 stall
B&M Supercooler
Hooker LTs w/ mufflex 4" exhaust
NX nitrous Gemini stage 6
Custom white and black leather int
Pearl red paint
16 Speaker system 3 AMPS
gtabadboy is offline vBGarage Page   Reply With Quote
Old 05-05-2003, 12:53 AM   #17
Senior Member
 
Join Date: Jun 2002
Location: Walla Walla Washington
Posts: 751

Classifieds Rating: (0)

Send a message via AIM to radiateu2 Send a message via Yahoo to radiateu2
If you get detnation or ping you have too much advance back of in 2 degree increments and drive the car some place like a hill were a load will be placed on the motor. If it continues to ping back off another 2 degrees do this until you can no longer here a ping or detnation. I would keep the vacuum advanced connected while doing this cause at this point your working backward from total advance to initial advance. Typically you would want all your advance in by around 3,000
radiateu2 is offline vBGarage Page   Reply With Quote
Old 05-05-2003, 12:53 AM
ThirdGen
1992 Camaro




Paid Advertisement


Reply

Go Back   Third Generation F-Body Message Boards > Tech Boards > Tech / General Engine

Tags
350, 40, adjusting, advanced, affect, cam, car, curve, effect, engine, initial, power, springs, timing, xe284
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 


1982 Camaro '82 || 1983 Camaro '83 || 1984 Camaro '84 || 1985 Camaro '85 || 1986 Camaro '86 || 1987 Camaro '87 || 1988 Camaro '88 || 1989 Camaro '89 || 1990 Camaro '90 || 1991 Camaro '91 || 1992 Camaro '92


All times are GMT -5. The time now is 02:23 AM.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.5.2
All content copyright 1997 - 2014 ThirdGen.org. All rights reserved. No part of this website may be reproduced without the expressed, documented, and written consent of ThirdGen.org's Administrators.

Emails & Contact Details