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Author Topic:   HEI distributor question.
Rook 78
Dirt Full Roller

Total posts: 40
posted April 12, 2004 09:12 AM  
I have an HEI distributor, and found while timing it is fluctuating at about 3000rpms. I took the cap off and found that there were no bushings on the weights. I tried to put the bushings in, and they fit inside the weights, but did not fit on the shafts, apparently my shafts are oversized. I have no idea who built this distributor as it came with my motor. I changed the springs which seemed to help, but there is still slop where the weights go onto the shafts. What is up?? Is it possible that I have a racing distributor and someone has put stock weights on it?

[This message has been edited by Rook 78 (edited April 12, 2004).]

NJantz
Dirt Forum Champ
Total posts: 755
posted April 12, 2004 09:35 AM  
I have this same problem. We've tried a different timing light and still the same problem.
I've also tried a DUI HEI and one I built myself and still have fluctuation.


dirtbuster
Dirt Forum Champ
Total posts: 2007
posted April 12, 2004 10:17 AM  
If it were me I would take the weights out and lock it up so there was no working advance. Then you dont have to worry about whether the weights fit or not.

Rook 78
Dirt Full Roller

Total posts: 40
posted April 12, 2004 11:12 AM  
Not sure rules will allow that, but I will check. Thanks.

Rook 78
Dirt Full Roller

Total posts: 40
posted April 14, 2004 09:12 AM  
Being told that I can weld up dist. Can someone explain to me the best way to do this? Thanks.

vince88
Dirt Full Roller

Total posts: 43
posted April 15, 2004 07:59 AM  
how good is your timeing chain. if it has slack in it. it will cause your timeing to jump around alittle also..just a thought

Rook 78
Dirt Full Roller

Total posts: 40
posted April 15, 2004 08:37 AM  
Had not thought of that, thanks. I first want to get the distributor taken care of, if that does not resolve the problem, I will check the chain. Thanks.

jws
Dirt Maniac

Total posts: 115
posted April 15, 2004 11:06 AM  
If you weld it up, you had better have a good starter and a strong battery. This makes it hard to crank, especially on a high compression motor. You're timing may fluctuate at 3000 because that is about the rpm when you are achieving full advance. Maybe it is just not quite fully advanced and it is still moving around. You will never see 3000 rpm on the race track except restart. As long as it is steady by about 4000 I wouldn't be worried about it.

vosevichs
Dirt Forum Racer

Total posts: 78
posted April 15, 2004 11:07 AM  
HEI dist. have bushngs in them. They wear out fast. Remove the rotor and wiggle the shaft around. If they are gone. You think your timeing is bouncing at idle. Rev it up and watch it bounce. I'd trash it and put in a MSD. Or a DUI dist. if you like the HEI style.

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Scott Vosevich
RDBoyz Racing

[This message has been edited by vosevichs (edited April 15, 2004).]

Rook 78
Dirt Full Roller

Total posts: 40
posted April 15, 2004 12:29 PM  
Class requires an HEI, and I finally found out it is a DUI. The bushings seem to be good in the distributor, I am working on ordering new weights and springs. I was told by Performance Dist. that I do not have the right weights. I am going to start there, and see what happens. The weghts are so loose on the shafts that they can overlap. The car runs good, I have had it to 6700 and does not seem to cut out, but eventually I will need to take it over 7000. Just want to make sure everything is good. Thanks.

dirtbuster
Dirt Forum Champ
Total posts: 2007
posted April 15, 2004 12:56 PM  
We run no advance in our distributor and dont have any trouble firing 13:1 motor. Wire your ignition so you can turn it over then hit the fire button. That way you can get it spinning before trying to put the spark to it. If you do run advance I would keep a close eye on it and check it often so it doenst cause you problems.

MiPinto6
Dirt Maniac

Total posts: 118
posted April 15, 2004 03:04 PM  
We have locked the advance in every distributer we've ever run. Just as the post above suggested, get the motor spinning and then light it. Never had any problems. We just remove all the advance wieghts and tack weld a few spots to hold the advance in place.

Rob

jMartin32
Dirt Roller

Total posts: 7
posted April 16, 2004 10:00 PM  
just weld it .

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