MSD dizzy repair??? Squealing Dizzy - Team Camaro Tech
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post #1 of 14 (permalink) Old May 25th, 14, 09:27 PM Thread Starter
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Don
 
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MSD dizzy repair??? Squealing Dizzy

My 69 has been in the shop for 14 months for some simple work.(dont ask dont tell)))(((and dont get me started)))(((sore subject)).

Mechanic says for 2 nd time its all done and running great.(first time he said that it had a cracked head). just had new heads installed a hi-perf cam,,,and new intake.

Get 3 blocks and it is screaming , squealing , squeaking and making lots of noise. Went somewhere else and we took all the belts off and still screamed.

Stopped yet another friend of mine and he said lean on the diz. Noise stops abruptly. It has a MSD diz and ignition box says model 6A on the box.

Question is has anyone been inside a msd diz? Do they have replaceable bearings,,,,or do I order a new diz?

Problem is car is 120 miles from me and we are on 3rd trip just to get it home.

Any advice?

Last edited by 69-Pace; May 30th, 14 at 08:50 PM.
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post #2 of 14 (permalink) Old May 26th, 14, 01:28 PM
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MSD dizzy repair???

Yeah, I've got some wall art because of this.
New intake. Is it a Mexican Holley? Look to see if the dizzy has to fit inside a machined hole in the manifold or does it PROPERLY rest on top of the machined manifold surface surrounding the hole. The dizzy should free-float on top of the manifold until you tighten it down. Do not let it drop into a hole that was bored into the manifold. That was a Holley Mexican mistake. Wait a second,,,, here,
Bad, very bad,

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post #3 of 14 (permalink) Old May 26th, 14, 02:15 PM
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MSD dizzy repair???

The other cause could be the where raising or removing the engine and did not remove the dizzie 1st.. in the process bending it against the firewall

My Spelling is not incorrect...it is creative

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Last edited by 69-Pace; May 30th, 14 at 08:46 PM.
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post #4 of 14 (permalink) Old May 30th, 14, 08:40 PM Thread Starter
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MSD dizzy repair???

Started a new thread since didnt even spell squealing right.

Took dist off tonight and can feel the slightest of movement in the top,,,sideways of this MSD pro billet distributor. Box on firewall says MSD -6A if that matters.

So are the bearings on the top end replaceable? Or buy a whole new dist.?

I "THINK" the old rotor had the slightest mark on the side of it and a slight mark inside the cap where it might have rubbed??? Will that produce a squeal just like a belt as it warms up in 6 blocks??? VERY loud I might add.

When it was running leaning hard on side of the cap stopped the terrible noise right now!!

Think there is a new Accel dist on the shelf at work. (If it would fit this app) Do they take a special cap also like MSD??? (I had trouble on the road and found the hard way a regular cap dont fit a MSD dist.)
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post #5 of 14 (permalink) Old May 30th, 14, 08:44 PM
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Re: MSD dizzy repair???

Okay Don - I'll merge the other two replies and fix the title for you so its all in one place.


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Last edited by 69-Pace; May 30th, 14 at 08:55 PM.
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post #6 of 14 (permalink) Old May 31st, 14, 02:19 PM Thread Starter
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Re: MSD dizzy repair??? Squealing Dizzy

Update--- Took dizzy off yesterday and today took it to a racing engine builder/machine shop. Asked that he put a new bearing on the top end fix the nut that falls off/ turns when you loosen rotor screw down.

It sure didnt have much wobble in it but must have been enuf to allow rotor to rub cap. Even a new rotor and cap didnt help.

Will see what comes of this. In mean time doing some other things like rear bumperettes and passenger side rear window that stays up but doesnt roll up and down,,,just falls down. (Have some window fuzzy to install anyway.) AND a door lock that got broke at the shop trip.
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post #7 of 14 (permalink) Old May 31st, 14, 03:39 PM
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Re: MSD dizzy repair??? Squealing Dizzy

Hmm I still suspect something else amiss.
Dizzies with very worn bushes and shafts do not have rotors rubbing
either it has been bent as I suggest above.. and/or it maybe a counterfeit chinese msd.
MSD used to, dont know if still do, have a note up on their web site re counterfeit.... and a lot of ppl had issues with them.

To get the bushes replaced maybe a little more expensive than u count on.. basically it is a specialist job.. they are , or should be sintered bushes that CANT be reamed to size because that blocks up the sinters.

My Spelling is not incorrect...it is creative

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post #8 of 14 (permalink) Old Jun 1st, 14, 07:04 AM Thread Starter
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Re: MSD dizzy repair??? Squealing Dizzy

Now we are getting somewhere. How in the world do you 'tell' if what came with the car IS a Chinese knockoff?? Yes that makes more sense. Was having a hard time wrapping my head around all this too. OR how hard is it to bend the shaft slightly??? The shop it was in had it laying around for over a year,never know how much junk was thrown on top of it,,,or dropped etc. This guy even moved his whole shop to another location while this was tore down(dont know how that worked or how all was moved).

It look pretty durable. How would one check to see if it is slightly tweeked or bent? Or know if it is a knockoff???
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post #9 of 14 (permalink) Old Jun 1st, 14, 07:09 AM
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Re: MSD dizzy repair??? Squealing Dizzy

Quote:
Originally Posted by Orange 69 Camaro View Post
Now we are getting somewhere. How in the world do you 'tell' if what came with the car IS a Chinese knockoff?? Yes that makes more sense. Was having a hard time wrapping my head around all this too. OR how hard is it to bend the shaft slightly??? The shop it was in had it laying around for over a year,never know how much junk was thrown on top of it,,,or dropped etc. This guy even moved his whole shop to another location while this was tore down(dont know how that worked or how all was moved).

It look pretty durable. How would one check to see if it is slightly tweeked or bent? Or know if it is a knockoff???
For the chinese knock off comparison, go to the MSD site. They show measurements at least for the ignition boxes, different fonts etc. I'm not positive about distributors, but they probably do the same. Pretty obvious if you compare two side by side. You could email them pictures of the dizzy with the s/n etc too I bet.

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post #10 of 14 (permalink) Old Jun 1st, 14, 08:46 AM Thread Starter
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Don
 
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Re: MSD dizzy repair??? Squealing Dizzy

Stupid site that MSD one...have to register to se anything...did that yesterday,,,,still cant use it.NOT APPROVED YET!!!

My dizzy is at someone elses shop so dont know numbers off it or measurements etc....Didnt know at the time yesterday that I needed those.

Does the knockoffs look identical on the boxes or are the bad ones different. Mine looks legit
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post #11 of 14 (permalink) Old Jun 1st, 14, 09:50 AM
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Re: MSD dizzy repair??? Squealing Dizzy

Trying to replace parts in the old distributor will most likely cost as much as a new one. It sounds like the shaft is bent. I would replace it with this distributor http://www.summitracing.com/parts/msd-8361/overview/. Purchase it from somewhere like Jegs or Summit Racing. Another site you might try is Streetsideauto.com. Go to streetsideauto.com/coupons first and see if they have any coupons that can save you some money.
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post #12 of 14 (permalink) Old Jun 1st, 14, 11:16 AM
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Re: MSD dizzy repair??? Squealing Dizzy

Quote:
Originally Posted by Orange 69 Camaro View Post
Stupid site that MSD one...have to register to se anything...did that yesterday,,,,still cant use it.NOT APPROVED YET!!!

My dizzy is at someone elses shop so dont know numbers off it or measurements etc....Didnt know at the time yesterday that I needed those.

Does the knockoffs look identical on the boxes or are the bad ones different. Mine looks legit
I couldn't find the distributor comparison, but here is the 6AL box site...
http://bangshift.com/general-news/sp...ion-vs-a-fake/

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post #13 of 14 (permalink) Old Jun 1st, 14, 02:16 PM Thread Starter
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Don
 
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Re: MSD dizzy repair??? Squealing Dizzy

Here's a dumb question. How do you tell if the dizzy shaft is slightly bent?? When I took it off it spun ever so smooth and easy,,,all the shaft is inside the case,,,with the gear sticking out the bottom and the rotor out the top

Just replacing it with another like it seems like the best method,,,,if I go to another type and brand I start from scratch,need coil,filters,voltage limiters,wires and all rewired to hook up. Besides I still have the loose nut issue

PS. My box says 6-A and not a 6 AL as was shown on the fake box. Plus my number was way different. Nice to have that info tho,,,thanks bunches!!!
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post #14 of 14 (permalink) Old Jun 1st, 14, 06:53 PM
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Re: MSD dizzy repair??? Squealing Dizzy

Personally Im not a fan of MSD for many reasons
1/ One has a nice colour co ordinated engine compartment and a bloody great ugly red box that sticks out like a sore thumb with gangrene... oh bragging rights to those not in the know.
2/ multi spark discharge... works great till rpms get mid range and there is not enough time in a stroke to throw more than 1 spark in... so its basically a system for ppl who are to damn lazy to keep their HT leads and spark plugs in good order at idle and cruising around town.
3/ A good old 4 blade GM hei dizzy is far more reliable, far better total mileage and a far better built module.

And no matter what type of Dizzie u put in espec if not points or pre early mid 70s egr , its going to need serious mods in the VA and cent curves (not hard to do) to time the engine correctly

I replaced my Factory re curved HEI couple yrs ago in a hurry.. couldn't the time to ship in from the states... with Chinese GM hei copy... surprisingly its still performing well... re daily driver so knocks up a lot miles.
And throw in being dedicated LPG .. and LPG is real sensitive to quality of spark

I dont even bother with MDS anymore, too much unnecessary screwing around with crap thats not needed.
positive note: the marketing guys sure have done an excellent job on propaganda over the decades, Goebbels would be proud of.

My Spelling is not incorrect...it is creative

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