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Author Topic:   Setting timing
eddie7232
Dirt Full Roller

Total posts: 26
posted January 05, 2003 07:55 PM
Hey hey Any advice on setting the timing on chevy 350 motor. I just got a timing light and have never done this before. The timing light i have is a basic lightno advanced featurs. i bought the timing tape kit from summit. so information on installing this would be helpful too. Also my car came with a distributer with a welded ???? something in it.!! Thanks

redneck racing
Dirt Freak

Total posts: 276
posted January 05, 2003 08:50 PM
I got this off this forum. 23 degrees advance with a stock intakes and 36 degrees advanced with headers. I run my car at 42 degrees advanced. Eddie

rico 08
Dirt Freak

Total posts: 372
posted January 06, 2003 02:28 PM
you can use a timing light with an advance degree dial or a regular one and the tape just bring up the timing to what u want(say 36)to the tdcor zero mark on the timing cover if you're dist is welded u can do this at idle regular dist at at least 3000 rpm.42 degrees?wow that's a lot i hope it's on 8.5-1 compression or less!

eddie7232
Dirt Full Roller

Total posts: 26
posted January 06, 2003 03:14 PM
How do you install the tape? - on the balancer?

eddie7232
Dirt Full Roller

Total posts: 26
posted January 06, 2003 03:15 PM
Also is there any kind of mark you have to put on the tape or does the number just show up under the light and when you turn dist the number that;s light up changes?? THANKS

Eljojo
Dirt Freak

Total posts: 273
posted January 06, 2003 06:21 PM
About every race motor likes a little different setting. Start out on about 30 and work your way up. There's a sweet spot in there somewhere!

rico 08
Dirt Freak

Total posts: 372
posted January 09, 2003 05:07 PM
i've never installed one i guess they would just be like a sticker and when timing just use the zero mark on you're timing tab and turn dist till the degree you want lines up with zero,or better yet borrow a degreed light from someone at the track that may save a lot of work.

WillieWinn
Dirt Roller

Total posts: 19
posted January 09, 2003 05:36 PM
Let's get detailed. Put the tape on your balancer with zero lining up with the mark on the balancer. Your numbers should count up going counter-clockwise. Start the motor and idle it. Point the light hooked to number one plug wire at the zero on your tab. You will see a number on the tape. Thats your initial advance. Shoot for 10 to start. You adjust by moving the dist. back and forth. Counter clock to gain numbers (advance). Rev the motor and take note of the highest number achieved on the tape that lines up with the tab zero. That's your total advance. It should be all there by 3000 rpm or so. Watch your tach or use have a friend help. Most times it should be in the 30's. Your welded distributor has a preset advance built in. If your total number is too high, retard the distributor clockwise. You want the right numbers on the rev-up. That's where you race. Sorry so long but dammit that's how you do it. Also, timing tapes tend to get thrown off, so don't depend on it forever. Get a dial timing light and you won't need tape. Hope that helps.

eddie7232
Dirt Full Roller

Total posts: 26
posted January 09, 2003 05:58 PM
Thanks !!!!! that's what I needed

racer2
Dirt Maniac

Total posts: 166
posted January 09, 2003 07:24 PM
I never did get that timing tape to stay on.

gahainsey
Dirt Full Roller

Total posts: 43
posted January 10, 2003 06:35 AM
Timing tape is relatively useless unless 0 degree mark on balancer is verified at TDC with a piston stop and degree wheel. in my opinion.

UFnARacing
Dirt Full Roller

Total posts: 68
posted January 10, 2003 09:20 AM
This may be more than you want to do, but gahainsey is right. Your not doing it right, unless you verify TDC. It's not that hard to do, but must be done. Here's what I did. I took an old spark plug, broke out all the ceramic. Drill through the plug, where the electrode goes. This requires some grinding to get it flat enough to drill through. Don't worry about getting it right in the center of the plug. Drill it with a 1/4", "E" or "F" drill bit. Then use a 5/16"-18 tap to tap the hole out. Then you need a 5/16" piece of all thread about 4" long with a nut. Put the all thread into the hole from the top of the spark plug and put the nut on from the top also. Get your engine close to TDC on the #1 cylinder. Pull your #1 spark plug and put the "new" one in, with the all thread all the way out. Slowly thread in the all thread until it hits the top of the piston. Lock the nut on to the top of the plug. Make a pencil mark on the balancer. BY HAND, turn the motor backwards until the piston hits the all thread again. If you've gone past TDC, you may have to turn the engine forward, either way it doesn't matter. Do this slowly so you don't hurt the top of the piston. Once you've hit again, make another mark on the balancer. Measure between both of those marks, and you have EXACTLY TDC. That would be zero for the tape. Be sure to take out the all threaded spark plug before you turn the engine any more.

It may sound like a lot to do, but it's worth it in the end to know where TDC really is.

Randy

sixwillwin
Dirt Freak

Total posts: 215
posted January 10, 2003 09:33 AM
UFnA is accurate but I would save the trouble of making the spark plug tool and just simply by a "piston stop" tool for about $8, which is the same thing without the work. sixwillwin

66jj
Dirt Freak

Total posts: 352
posted January 10, 2003 05:13 PM
timing tape never sticks, i have one i re- use to mark all my balancers at tdc,90,180,and 270,of course after verifying tdc with a dial indicator and heads of.

i grind a line accross with a skinny cutting wheel. i use these for adjusting the valves etc.

i recently started buying a balancer cover for 29.95 any color from summit or competition products with all the degreeing done like a tape, i just verify tdc and move the wire i weld on for a tab...

jeff

UFnARacing
Dirt Full Roller

Total posts: 68
posted January 10, 2003 08:12 PM
What can I say??? When I made this (10 years ago) I was very, very cheap!!!

Randy

Speed Racer X
Dirt Full Roller

Total posts: 61
posted January 10, 2003 10:36 PM
Check the "Tool Box" for the advanced timing marks for your balancer.

tilley88
Dirt Freak

Total posts: 353
posted January 11, 2003 02:53 AM
I agree with 66jj, buy the balancer cover if you can't afford the balancer w/ the timing marks already engraved. Timing tape sux.

dirtracer7
Dirt Maniac

Total posts: 106
posted January 30, 2003 07:27 PM
You can use a degree wheel if you have one laying around.Once you find tdc and mark the damper you can mark whatever degrees you want.Seems like the tape would have to be right for the circumfrence of the damper.I had to set up my own timming marks on the drivers side of the timing cover I made a pointer found tdc and them marked the damper and filed a groove in it.Almost forgot I mark the inner part of the damper at tdc so I can see if the outer part has slipped.

[This message has been edited by dirtracer7 (edited January 30, 2003).]

Slam_Shifter
Dirt Full Roller

Total posts: 53
posted January 31, 2003 09:12 PM
The welded????? in your distributor is the vacuum and mechanical advance. What they have done is advanced the distributor full out and welded it solid. This is to take some of the variables out of setting the timing plus it keeps timing more stable at high RPM. We use this same technique on our car. What we do is weld the distributor solid and mark the damper at 32 degrees.(you can use timing tape instead of markin dmaper) You time it at 32 degrees by the mark you make on the damper with a timing light and work your way up to the sweet spot. You set the timing at idle to the amount of advance you want final I.E. 32 degrees. The theory is at high rpm you won't get inaccurate timing due to the weights bouncing etc. . you don't need to run the advances because on the track your RPM should not be low enough to be less than fully advanced. also eliminates the need for advanced timing lights etc. One draw back is sometimes you need to start rolling the engine over before you arm the ignition or it will be **** to start.

Slam_Shifter

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