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Author Topic:   timing marks
racer17j
Dirt Forum Champ
Total posts: 1565
posted February 26, 2002 03:08 AM UIN: 54865418
i have heard of guys measuring and marking a new line on there balance so they don't have to have the adjustable timing lites anybody done this i know they make tape to put on it but i'm a cheap skate lol i have a 8 in balancer and want to time it @ 36* can somebody help me out with a measurement to make the new mark

snowman
Dirt Maniac

Total posts: 140
posted February 26, 2002 12:47 PM
Racer17j, I always mark the balancers,even on a stock rebuild and use the marks to adjust the valves.

Using a protractor,I mark 0,36,38,90,180,and 270 degrees on a sheet of paper. Using a compass,I make the circle the size of the balancer. Cut out the circle of paper and lay it on the balancer,line the 0 mark up with tdc groove on the balancer and you got it.

One needs to be very carefull with the timing marks.Being off just a little at the edge of the protractor could amount to several degrees on an 8 in. balancer.

Also,one should make sure that the TDC mark on the timing cover is correct.

awkwardjeff
Dirt Freak

Total posts: 458
posted February 26, 2002 02:29 PM
I will just give a note here.....I put a mark on BOTH the damper and the pulley....this way if the outer ring on the damper spins you can see the change.

I have known a few people that have timed there motors after the outer ring spun and melted a motor over such a little thing.

Just put the marks on BOTH when new, then BEFORE you start the motor to time it check the marks and make sure they are still lined up........this way you know you are not going to melt a motor.

snowman
Dirt Maniac

Total posts: 140
posted February 26, 2002 03:45 PM
Very good advice indeed.

I mark and inspect regularly.I have seen a car when the balancer ring let go. It took out the pulley,belts,fan,waterpump,and radiator and something went Through the hood of the car.The guy was very luckey no one was hurt. Bad deal all the way around.

jammin
Dirt Administrator

Total posts: 5556
posted February 26, 2002 04:49 PM UIN: 16262997
If Jeff is right, but remember if its a 400 harmonic....(externally balanced) throw it away if it spins, it isnt anygood any longer.
It will be out of balance and can ruin a good engine.

jammin

sdhnc29
Dirt Freak

Total posts: 467
posted February 26, 2002 09:04 PM

Here is a simple formula for you . Take the diameter of your balancer , multiply it by Pi (3.1415) , then divide that number by 360 , and finally multiply this number by your desired degree's of advance . Measure from your zero mark , and mark your balancer .

Example : 8" balancer , and I want 36deg. of advance ; This would equal 2.513" from zero to 36deg. on the balancer .

Balancer diameter X Pi Divided by 360 X total desired advance .
Steve

------------------
Hendren Racing Engines
Rutherfordton , NC
(828)286-0780

snowman
Dirt Maniac

Total posts: 140
posted February 26, 2002 09:53 PM
Sdhnc29, I like you alot and think you're one of the reasons this site is great.In general,I admire people who take time to help others.

By the way, I have a really nice protractor for sale if your intersted (I don't seem to need it anymore...lol...)

sdhnc29
Dirt Freak

Total posts: 467
posted February 27, 2002 12:52 AM
Thanks snowman ! Funny thing is ....... I had to buy a new protractor yesterday !! Must have been one of those d@mn shop gremlin's !!

Steve

------------------
Hendren Racing Engines
Rutherfordton , NC
(828)286-0780

ryan
Dirt Freak

Total posts: 430
posted February 27, 2002 01:09 AM
Steve, is there anything that you don't know about engines. I don't think I ever remember you posting a question yet you still help everyone else out. I know in the past year I have learned so much just from this website that I would have taken me years on the track to fiqure out. Also it is nice to know I'm not the only person on here after midnight. Gotta stay up late with my rifle watching for shop gremlins. lol

racer17j
Dirt Forum Champ
Total posts: 1565
posted February 27, 2002 03:19 AM UIN: 54865418
thanks for the help would i be able to mark it at 2.5 or is it that big of a diference without the .012 on there

jammin
Dirt Administrator

Total posts: 5556
posted February 27, 2002 07:05 AM UIN: 16262997
You guys want a calculator for this? I think it could be a nice addition to the toolbox.

jammin

racer17j
Dirt Forum Champ
Total posts: 1565
posted February 27, 2002 12:05 PM UIN: 54865418
that would be cool jam

sdhnc29
Dirt Freak

Total posts: 467
posted February 27, 2002 12:18 PM
2.5" will be close . Considering that your timing mark and timing tab will be thicker than .012" , you'll be in the ball park .

------------------
Hendren Racing Engines
Rutherfordton , NC
(828)286-0780

ryan
Dirt Freak

Total posts: 430
posted February 27, 2002 12:35 PM
Go for it Jammin if it helps one guy out its worth it.

jammin
Dirt Administrator

Total posts: 5556
posted February 27, 2002 03:21 PM UIN: 16262997
Done deal guys.....it's in the toolbox.

jammin

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