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Author Topic:   timing Q ???? ask the pros lol
mrteeshot
Dirt Maniac

Total posts: 127
posted April 17, 2004 09:23 AM  
some 1 said 36 degrees but thats so far out of the range of the marks on the crank that it just dont seem rite you guy`s and gals so far have given good tips
what ya think about my situation?????
1978 buick riviera
403 olds engine (no rebuild)
350 th trans (rebuilt)
241 rear end (open)
stock distributor/hei coils and such
accel cap and wires
r44ts plugs gap at 60
92 octane mobil gas
what can I do to get peak performance outta this car and stay within the pure stock rules
any info/pointers/tips ya all can give is appreciated

tonite is my 1st race gonna run it as is 2 day but will try 2 get more ponies next week for now think that im gonna just try 2 finish and work on technique later will post results after race 2 nite
thanx and good luck and a safe season to ya
keep it off the walls

racer17j
Dirt Forum Champ
Total posts: 5390
posted April 17, 2004 10:09 AM  
Read in here somewhere that you should run 26 degrees with stock exhaust manifolds and 36 degrees with headers personally I run mine at 42 degrees with headers. Eddie

racerguy500
Dirt Maniac

Total posts: 168
posted April 17, 2004 10:31 PM  
Get it to TDC before you do anything and see if your marks are close, The Olds engines and balancers are not very accurate so you are probably chasing your tail there. The start off at about 30, that is total, not what you are gonna read on your balancer at idle. Try a couple degrees each time till you find what works best for you, Hope that helps, Good luck

25JHenry
Dirt Full Roller

Total posts: 73
posted April 18, 2004 07:24 AM  
You need to get a degree timing light so you can set the degree you want on the light and shoot the light on your marks to "0" degrees. You can't set your timing to 30 or higher with a standard timing light unless you have some timing tape for your balancer of an aftermarket balancer with the marks stamped into it. With a stock cam and lifters I would set it at the original degree spec for the car to start. (The cam isn't made for high RPM's) You will get good performance there. Then try moving the timing up 1-2 degrees at a time until you find the best setting for your engine.

We set our timing at 36 degrees at 3000 RPM's. Its a ISKY Racing cam with 106 degree lobe separation. Most stock cams have less separation like 112 degrees. So I wouldn't set it up to high to start.

24s52
Dirt Maniac

Total posts: 122
posted April 21, 2004 07:58 AM  
Personally, I wouldn't mess with stock timing and bumping it a few degrees every week. Are you running the vaccuum advance? I always take it off and set total timing somewhere between 36 and 40 degrees. If you listen carefully you can hear when detonation starts. You will want to back it off a few degrees then. Or if it starts cutting out at the end of the straight (high rpms). Remember, too much timing will actually retard the timing and really get you scratching your head. Just my $.02

77k
Dirt Maniac

Total posts: 174
posted April 21, 2004 11:23 PM  
Is it still alive? Need to get an adjustable timing light and set timming at 36 degrees FULL advance,Need to put new rod and main bearings or you will be lucky to 2/3 nights out of it.I have seen a lot of them spin old bearings even if they are low miles.

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