dizzy is got me stumped - The 1947 - Present Chevrolet & GMC Truck Message Board Network

tphsmith · 03-14-2005, 02:34 PM

I have a new aluminum intake by Holley and when I drop the dizzy all the way in and put the dizzy clamp on I can still rotate the dizzy pretty easy, I have bought a new gasket for the dizzy and and also a new dizzy toe clamp and still have the same issue, i can rotate the darn dizzy pretty easy. Do i need to put like a 280 grit sandpaper between the dizzy and the intake to stop the movement, what am I doing wrong?

BLAZERMAN · 03-14-2005, 02:51 PM

It sounds like the dizzy is bottomed out, have the heads or block been milled? are you sure it has engaged in the in the oil pump shaft?

tphsmith · 03-14-2005, 02:59 PM

all I changed was the intake, nothing else to my knowledge has changed, I'm pretty sure the dizzy is engaged into the oil pump shaft, I think it is. if the dizzy wasnt engaged into the oil pump shaft would the dizzy not be seated flush with the intake opening for the dizzy or would the dizzy still have like a quarter inch space between it and the intake?/.

BLAZERMAN · 03-14-2005, 03:12 PM

If its flush with the intake then it is engaged, are you sure the clamp is up on the collar of the dizzy?

67ChevyRedneck · 03-14-2005, 03:12 PM

It would be flush if it was engadge properly. Take a flashlight and look in the hole to be sure the shaft is where it is supposed to be. I'm confused on how it could still be spinning with the clamp on....is it possible they gave you the wrong intake?? Check the clamp with your old one too.

tphsmith · 03-14-2005, 03:18 PM

it dont spin with the clamp on, but i can rotate it by hand the amount of adjustment for timing issues, but the clamp is very tight but I can still move the distributor

beaterC10 · 03-14-2005, 03:24 PM

Might check the clamp bolt, make sure the bolt is not bottoming out in the hole or bottoming on the bolt shank before the clamp is tight. I had a similar problem with a Performer intake. The aftermarket guys don't always get the bolt holes drilled and tapped to the same depth as the factory did.

smokekiki · 03-14-2005, 03:40 PM

Take the clamp off,and flip it over.The clamps are not perfectly flat.If the "legs"are pointing up it will not clamp tight.

ddsmith · 03-14-2005, 05:19 PM

"Might check the clamp bolt, make sure the bolt is not bottoming out in the hole or bottoming on the bolt shank before the clamp is tight. I had a similar problem with a Performer intake. The aftermarket guys don't always get the bolt holes drilled and tapped to the same depth as the factory did."
You could always use a stud and nut to rule this problem out.

jeffnstef · 03-14-2005, 06:16 PM

What's a DIZZY ? is that the Distrubiter ?

GMC AMI · 03-14-2005, 06:37 PM

Yea, if you watch it going round and round you will get dizzy! LOL

GMC AMI · 03-14-2005, 06:40 PM

Quote:

Originally Posted by ddsmith

"Might check the clamp bolt, make sure the bolt is not bottoming out in the hole or bottoming on the bolt shank before the clamp is tight. I had a similar problem with a Performer intake. The aftermarket guys don't always get the bolt holes drilled and tapped to the same depth as the factory did."
You could always use a stud and nut to rule this problem out.

Also you could use a locking washer to use up space on a too long bolt if bottoming out.

*rage'nrat638* · 03-14-2005, 06:48 PM

double up on the dizzy gasket

**tnblazerk5** · 03-14-2005, 07:13 PM

Quote:

Originally Posted by smokekiki

Take the clamp off,and flip it over.The clamps are not perfectly flat.If the "legs"are pointing up it will not clamp tight.

tphsmith · 03-14-2005, 09:36 PM

the bolt dont bottom out, I also have added a lock washer no help. the guy at the parts store says to try to score the intake minor amount and the surface that touches the intake on the dizzy a minor amount to see if it will catch on the scores instead of slipping on the smooth intake, smooth gasket and smooth dizzy surface for it has something to catch on. I have never seen this before with the slippage, but first time for everything i guess. So I'm thinking about useing a way scrapper from work and scoring these surfaces. um I guess machinist tools do come in handy once inawhile. any other ideas before I go about the scoring issue?

pritch · 03-14-2005, 10:40 PM

Quote:

Originally Posted by tnblazerk5

Maybe even clamp it in a vise and give it a little love tap to give it a little more bend. The hold down clamp, that is.

ABHaulR · 03-14-2005, 10:47 PM

i had the same problem, i did what pritch said but it started to loosen up again, so i welded 2 little tits on the tabs and no more problems.
Dwayne

BLAZERMAN · 03-14-2005, 10:51 PM

If its that bad you could center punch about 3 spots on each mating surface, that should give it some bite.

68C15 · 03-14-2005, 10:55 PM

check with a machine shop for some valve spring shims to fit under the collar of dizzy. maybe evn some king pin shims or pinion gear shims.
it sounds like loose manufacturing tolerances or Pedro got a little carried away on a Friday afternoon.

**GMCPaul** · 03-14-2005, 11:02 PM

I find it to be a somewhat common problem with aluminum intakes, my fix when using steel distributor retainers has always been to put the retainer in a vice and tweak the ears downward so they grasp the distributor better. If you use one of the billet distributor retainers they are thicker and you won't have the problem. I wouldn't sand lightly on either the distributor or intake as then your only reducing the thickness of both which could make it worse and a slight amount of scoring with sandpaper will not stop the distributor from rotating.
GMCPaul

dyingdeadman · 03-15-2005, 03:14 AM

to fix that problem on mine a bought an aftermarket hold down thingy (retainer) it had a little more bend to it.

Z28Owner · 03-15-2005, 09:30 PM

I bought a new dist hold down clamp from Summit, was junk no matter how tight I got it, it would still move. I went back to the stock one, no more movement. Dont know what kind you bought, thought I would just throw that idea out there.

tphsmith · 03-16-2005, 07:24 AM

ell I have 3 diffrent dizzy clamps now and the stock one, no way wont hold at all, then i bought a chrome one at the parts store, way too thin, no way wont even hold, the third one I boughtm chrome a little thicker well its almost tight enough to hold. I like the comment about welding little tits on the bottom of it for a little more bite. I'll keep ya all posted on the outcome. this stinks

dwaite72lnghrn · 03-17-2005, 07:35 AM

I agree with Paul take the retainer put it in a vise and bend the the 2 feet tabs. Don't space the dizzy up and you shouldn't have to adjust, sand/scrape/punch, the intake or dizzy (if they were that poor of quality the sizes were off they would be out of business). If you have more room to tighten down the bolt it should hold the dizzy, Do your retainers have a slot for the bolt and are you snugging it all the way up against the dizzy?

Sonny · 03-17-2005, 08:56 AM

If the intake is thinner, you could be bottoming out the distributor against the oil pump shaft. If this is the case you will cause undue wear and tear to the distributor, oil pump and shaft. I recommend you get some distributor shims to get your distributor to clamp down properly.

IMHO,
Sonny

03-14-2005, 02:34 PM	#1
tphsmith still buypickupparts Join Date: Sep 2003 Location: charlotte Posts: 637	dizzy is got me stumped I have a new aluminum intake by Holley and when I drop the dizzy all the way in and put the dizzy clamp on I can still rotate the dizzy pretty easy, I have bought a new gasket for the dizzy and and also a new dizzy toe clamp and still have the same issue, i can rotate the darn dizzy pretty easy. Do i need to put like a 280 grit sandpaper between the dizzy and the intake to stop the movement, what am I doing wrong? __________________ Its Gonna be a Great Day, I woke up this Morning. 72 SWB Fleetside freshly painted. putting a 94 LT1 with 700R4 tranny lowered 4 in the front 6 in the back 81 chevy half ton 350 89 Silverado 4x4 going ta church truck

03-14-2005, 02:51 PM	#2
BLAZERMAN Currently Blazerless Join Date: Apr 2000 Location: St. Joseph Mo. Posts: 4,826	It sounds like the dizzy is bottomed out, have the heads or block been milled? are you sure it has engaged in the in the oil pump shaft? __________________ 1972 C/30 133" W.B. C&C 1970 GMC 3500 157" W.B. single wheel C&C Last edited by BLAZERMAN; 03-14-2005 at 02:54 PM.

03-14-2005, 02:59 PM	#3
tphsmith still buypickupparts Join Date: Sep 2003 Location: charlotte Posts: 637	all I changed was the intake, nothing else to my knowledge has changed, I'm pretty sure the dizzy is engaged into the oil pump shaft, I think it is. if the dizzy wasnt engaged into the oil pump shaft would the dizzy not be seated flush with the intake opening for the dizzy or would the dizzy still have like a quarter inch space between it and the intake?/. __________________ Its Gonna be a Great Day, I woke up this Morning. 72 SWB Fleetside freshly painted. putting a 94 LT1 with 700R4 tranny lowered 4 in the front 6 in the back 81 chevy half ton 350 89 Silverado 4x4 going ta church truck

03-14-2005, 03:12 PM	#4
BLAZERMAN Currently Blazerless Join Date: Apr 2000 Location: St. Joseph Mo. Posts: 4,826	If its flush with the intake then it is engaged, are you sure the clamp is up on the collar of the dizzy? __________________ 1972 C/30 133" W.B. C&C 1970 GMC 3500 157" W.B. single wheel C&C

03-14-2005, 03:12 PM	#5
67ChevyRedneck Hittin E-Z Street on Mud Tires Join Date: Nov 2004 Location: Greenville, SC Posts: 23,090	It would be flush if it was engadge properly. Take a flashlight and look in the hole to be sure the shaft is where it is supposed to be. I'm confused on how it could still be spinning with the clamp on....is it possible they gave you the wrong intake?? Check the clamp with your old one too. __________________ Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride American Born, Country by the Grace of God 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications!

03-14-2005, 03:18 PM	#6
tphsmith still buypickupparts Join Date: Sep 2003 Location: charlotte Posts: 637	it dont spin with the clamp on, but i can rotate it by hand the amount of adjustment for timing issues, but the clamp is very tight but I can still move the distributor __________________ Its Gonna be a Great Day, I woke up this Morning. 72 SWB Fleetside freshly painted. putting a 94 LT1 with 700R4 tranny lowered 4 in the front 6 in the back 81 chevy half ton 350 89 Silverado 4x4 going ta church truck

03-14-2005, 03:24 PM	#7
beaterC10 Senior Member Join Date: Jul 2003 Location: Indianapolis, IN Posts: 1,277	Might check the clamp bolt, make sure the bolt is not bottoming out in the hole or bottoming on the bolt shank before the clamp is tight. I had a similar problem with a Performer intake. The aftermarket guys don't always get the bolt holes drilled and tapped to the same depth as the factory did.

03-14-2005, 03:40 PM	#8
smokekiki Mike Join Date: Jan 2003 Location: west chester pa Posts: 2,474	Take the clamp off,and flip it over.The clamps are not perfectly flat.If the "legs"are pointing up it will not clamp tight. __________________ 70'c/10, 71 suburban4x4 402bb, 72suburban 4/6 drop, 72k/5 4x4 blazer 4" lift 35 tires

03-14-2005, 05:19 PM	#9
ddsmith Glowing since 1978 Join Date: Mar 2001 Location: Lusby,MD,USA Posts: 532	"Might check the clamp bolt, make sure the bolt is not bottoming out in the hole or bottoming on the bolt shank before the clamp is tight. I had a similar problem with a Performer intake. The aftermarket guys don't always get the bolt holes drilled and tapped to the same depth as the factory did." You could always use a stud and nut to rule this problem out. __________________ 66 Chevy C30 Stakebody Dump, PS,PB, 327cu in 71 Corvette Coupe 454 4 speed 69 Chevy C20 Custom Camper

03-14-2005, 06:16 PM	#10
jeffnstef Registered User Join Date: Dec 2004 Location: Manchester, NH Posts: 64	What's a DIZZY ? is that the Distrubiter ?

03-14-2005, 06:37 PM	#11
GMC AMI Registered User Join Date: Apr 2004 Location: The Other Maine! Posts: 2,236	Yea, if you watch it going round and round you will get dizzy! LOL __________________ 1968 Chevy 4x4 307 4 speed

03-14-2005, 06:48 PM	#13
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	double up on the dizzy gasket

03-14-2005, 09:36 PM	#15
tphsmith still buypickupparts Join Date: Sep 2003 Location: charlotte Posts: 637	the bolt dont bottom out, I also have added a lock washer no help. the guy at the parts store says to try to score the intake minor amount and the surface that touches the intake on the dizzy a minor amount to see if it will catch on the scores instead of slipping on the smooth intake, smooth gasket and smooth dizzy surface for it has something to catch on. I have never seen this before with the slippage, but first time for everything i guess. So I'm thinking about useing a way scrapper from work and scoring these surfaces. um I guess machinist tools do come in handy once inawhile. any other ideas before I go about the scoring issue? __________________ Its Gonna be a Great Day, I woke up this Morning. 72 SWB Fleetside freshly painted. putting a 94 LT1 with 700R4 tranny lowered 4 in the front 6 in the back 81 chevy half ton 350 89 Silverado 4x4 going ta church truck

03-14-2005, 10:47 PM	#17
ABHaulR Registered User Join Date: Jun 2003 Location: West Valley City, Ut Posts: 311	dizzy i had the same problem, i did what pritch said but it started to loosen up again, so i welded 2 little tits on the tabs and no more problems. Dwayne __________________ 72' GMC Suburban 10 1/2" of Lift, 40" Tires! Waiting for restoration 67' Chevy, What to do??? And Bad Ass American Bulldogs!

03-14-2005, 10:51 PM	#18
BLAZERMAN Currently Blazerless Join Date: Apr 2000 Location: St. Joseph Mo. Posts: 4,826	If its that bad you could center punch about 3 spots on each mating surface, that should give it some bite. __________________ 1972 C/30 133" W.B. C&C 1970 GMC 3500 157" W.B. single wheel C&C



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03-14-2005, 10:55 PM	#19
68C15 blood type; Retumbo Join Date: Jan 2004 Location: next to my reloading bench Posts: 10,269	check with a machine shop for some valve spring shims to fit under the collar of dizzy. maybe evn some king pin shims or pinion gear shims. it sounds like loose manufacturing tolerances or Pedro got a little carried away on a Friday afternoon. __________________ Man rule #77...if you own a 67 stepside with a caddy 472 you will never be in danger of loosing you man card

03-14-2005, 11:02 PM	#20
GMCPaul Senior Member Join Date: Mar 2000 Location: Rockville,In. USA Posts: 3,720	I find it to be a somewhat common problem with aluminum intakes, my fix when using steel distributor retainers has always been to put the retainer in a vice and tweak the ears downward so they grasp the distributor better. If you use one of the billet distributor retainers they are thicker and you won't have the problem. I wouldn't sand lightly on either the distributor or intake as then your only reducing the thickness of both which could make it worse and a slight amount of scoring with sandpaper will not stop the distributor from rotating. GMCPaul __________________ Secure Online Catalog for-GMCPauls Truck Parts Email- GMCPAULS@GMAIL.COM

03-15-2005, 03:14 AM	#21
dyingdeadman Registered User Join Date: Aug 2004 Location: san marcos,tx Posts: 266	to fix that problem on mine a bought an aftermarket hold down thingy (retainer) it had a little more bend to it. __________________ 72 GMC sierra 3/4 ton 402 bb 68 GMC 3/4 ton 2010 camaro rs: daily driver

03-15-2005, 09:30 PM	#22
Z28Owner ......................... Join Date: Nov 2001 Location: benton, ky Posts: 288	I bought a new dist hold down clamp from Summit, was junk no matter how tight I got it, it would still move. I went back to the stock one, no more movement. Dont know what kind you bought, thought I would just throw that idea out there. __________________ 1971 LWB Chevy C-10 350/350 3:42 eaton

03-16-2005, 07:24 AM	#23
tphsmith still buypickupparts Join Date: Sep 2003 Location: charlotte Posts: 637	ell I have 3 diffrent dizzy clamps now and the stock one, no way wont hold at all, then i bought a chrome one at the parts store, way too thin, no way wont even hold, the third one I boughtm chrome a little thicker well its almost tight enough to hold. I like the comment about welding little tits on the bottom of it for a little more bite. I'll keep ya all posted on the outcome. this stinks __________________ Its Gonna be a Great Day, I woke up this Morning. 72 SWB Fleetside freshly painted. putting a 94 LT1 with 700R4 tranny lowered 4 in the front 6 in the back 81 chevy half ton 350 89 Silverado 4x4 going ta church truck

03-17-2005, 07:35 AM	#24
dwaite72lnghrn Registered User Join Date: Jun 2002 Location: central pa Posts: 1,525	I agree with Paul take the retainer put it in a vise and bend the the 2 feet tabs. Don't space the dizzy up and you shouldn't have to adjust, sand/scrape/punch, the intake or dizzy (if they were that poor of quality the sizes were off they would be out of business). If you have more room to tighten down the bolt it should hold the dizzy, Do your retainers have a slot for the bolt and are you snugging it all the way up against the dizzy? __________________ 72 longhorn c30 502BB/th400/fact air/4.11rear/ custom camper 72 bug(the better half's) under reconstruction 2009 HHR aqua blue 71 GMC k20 350/sm465 2009 Chevy hd3500 6.6 Victory Red crew cab dually Dave & Jeanne

03-17-2005, 08:56 AM	#25
Sonny Active Member Join Date: Jan 2004 Location: Centerville, GA Posts: 240	If the intake is thinner, you could be bottoming out the distributor against the oil pump shaft. If this is the case you will cause undue wear and tear to the distributor, oil pump and shaft. I recommend you get some distributor shims to get your distributor to clamp down properly. IMHO, Sonny

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