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4/8/11 1:11pm - Original Message: 'Dern it..tach broke!'
yostusota
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York, PA - USA

Vette(s):
1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top

Joined: 5/18/2010
Posts: 1518
My tach quite after driving down to Rodneys yesterday..it does move a hair up and down..I removed the end from the distributor..should there be a machined piece on the end or not..and which way do I turn this to see if the cable is ok..don't want to damage the tach by spinning it the wrong way..and the dern speedo is stuck at 22mph..will go higher but not lower..I can handle that one ok..its just a pita to have both die out at the same time.

Rich

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4/8/11 1:15pm - Reply: 'Dern it..tach broke!'
lukesvette Lifetime Member
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HOWELL, NJ - USA

Vette(s):
1979, Targa Blue (72 Color), Pace Car rear spoiler, L88 hood, Dark blue factory interior, 525HP 406, HD 700R4, 370 gears,Steeroids, composite rear spring, TT IIs wrapped in T/A Radials.

Joined: 5/18/2004
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Can you see if you have something busted off where it goes in?

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4/8/11 1:54pm - Reply: 'Dern it..tach broke!'
yostusota
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York, PA - USA

Vette(s):
1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top

Joined: 5/18/2010
Posts: 1518
I forgot my bor scope at work..so not without pulling the distributor..I wanted to see if it had an end crimped on it like the speedo..

Rich

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My first parade at Carlisle 2010
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4/8/11 2:40pm - Reply: 'Dern it..tach broke!'
Jaws79 Lifetime Member
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Sykesville, MD - USA

Vette(s):
1979 Corvette Coupe Corvette Light Blue Midnight Blue interior Mirrored Glass T-tops

Joined: 4/27/2008
Posts: 4211
Hey, Rich, at least if you have to pull the dash you can do them both at once!
 
Barry
 
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4/8/11 2:45pm - Reply: 'Dern it..tach broke!'
Jaws79 Lifetime Member
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Sykesville, MD - USA

Vette(s):
1979 Corvette Coupe Corvette Light Blue Midnight Blue interior Mirrored Glass T-tops

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And shouldn't you get one of those right angle thingies to prevent cable damage?
 
Barry
 
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4/8/11 3:40pm - Reply: 'Dern it..tach broke!'
yostusota
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York, PA - USA

Vette(s):
1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top

Joined: 5/18/2010
Posts: 1518
Nah Barry..you only need that if you don't know how to put in the distributor..I think I can remove the cable from the tach and see if it turns..hopefully it didn't break in there!

Rich

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4/8/11 3:50pm - Reply: 'Dern it..tach broke!'
Jaws79 Lifetime Member
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Sykesville, MD - USA

Vette(s):
1979 Corvette Coupe Corvette Light Blue Midnight Blue interior Mirrored Glass T-tops

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Thats why I like my electric one!
 
Barry
 
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4/8/11 7:50pm - Reply: 'Dern it..tach broke!'
JoeTrecca
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Charlottesville, VA - USA

Vette(s):
1978 Silver Anniversary L82 Previously: 1965 300hp Coupe in 1967. 1967 435hp Coupe in 1968-70. 1969 350hp T-top w/ac and all power options.

Joined: 9/3/2010
Posts: 103
Hi Rich, I had the tach on my '69 350/350 go out due to the brass drive gear in the distributor stripping. I replaced the gear and it soon went dead again. It turned out that the distributor shaft splined gear had one chipped tooth. I went with an electric SUN tach after that!

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4/8/11 10:02pm - Reply: 'Dern it..tach broke!'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

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The tach cable end that goes into the dist should be pressed into a square...no attachments or anything...just cable. I'm kinna thinkin like Joe...it may be the driven gear, or the dist shaft is damaged.
The speedo being stuck, or not going lower than 22 is certainly a problem in the speedo head itself. Once it does start registering, is it correct, or is it off?


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Joel Adams
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4/8/11 10:50pm - Reply: 'Dern it..tach broke!'
yostusota
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York, PA - USA

Vette(s):
1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top

Joined: 5/18/2010
Posts: 1518
Yeah..once I get moving it works fine..if I tap on the dash below it goes down..I will check the cable in the morning..plan on a show in the afternoon..so I wont be doing much with it..

Rich

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4/8/11 11:37pm - Reply: 'Dern it..tach broke!'
greypoupon69 Lifetime Member
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Irving, TX - USA

Vette(s):
#1 -1969 Corvette Coupe Riverside Gold, black interior,MN,A/C,350/350,PS,PB,window cranks. #2 -2000 C5, black/black, 6 sp, Bose system & lots of buttons.

Joined: 8/21/2004
Posts: 4273
Yep, my tach went out too, don't know what's wrong with it yet.  Also had my left front caliper poop out too, leaking break fluid....got to get that fixed.Dead

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4/9/11 6:18am - Reply: 'Dern it..tach broke!'
lukesvette Lifetime Member
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HOWELL, NJ - USA

Vette(s):
1979, Targa Blue (72 Color), Pace Car rear spoiler, L88 hood, Dark blue factory interior, 525HP 406, HD 700R4, 370 gears,Steeroids, composite rear spring, TT IIs wrapped in T/A Radials.

Joined: 5/18/2004
Posts: 6806
Shocked[QUOTE=Jaws79]Thats why I like my electric one!
 
Barry
 
Big smile
[/QUOTE]

Beware of the dreaded tach circuit board ghost Barry Blue......ShockedShockedShocked

BooooooooooShockedShockedShocked
lukesvette2011-04-09 04:18:55

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4/9/11 3:26pm - Reply: 'Dern it..tach broke!'
Jaws79 Lifetime Member
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Sykesville, MD - USA

Vette(s):
1979 Corvette Coupe Corvette Light Blue Midnight Blue interior Mirrored Glass T-tops

Joined: 4/27/2008
Posts: 4211
Yeah, Paul, but at least the circuit board replcement is nothing like a distributor rebuild!
 
Barry
 
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4/9/11 4:01pm - Reply: 'Dern it..tach broke!'
yostusota
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York, PA - USA

Vette(s):
1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top

Joined: 5/18/2010
Posts: 1518
Ok so today I ran the car so I can see inside the little screw on spot where the tach goes ..no spin..so I guess its a rebuild the distributor time..looks like the parts are cheap..should be fun..and Barry..I will take my mechanical over electrical anyday!

Rich

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My first parade at Carlisle 2010
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4/9/11 7:40pm - Reply: 'Dern it..tach broke!'
rod7515 Lifetime Member
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Red Lion, PA - USA

Vette(s):
1974 White 350 Corvette, TH400 Automatic 1972 Tangerine /Go Mango Convertible 383 Stroker, 2004r Automatic

Joined: 10/27/2006
Posts: 1172
Come on Rich, you know I didnt do it! did i tell you my tach in the 72 doesnt work and I needed some parts! Hah it works now! lol
Hope you get it workin, How did your show go today? Where were you at? Next week they have the one at the ice cream place in Red Lion on Sunday. I might sneak up to that one with my parents. Have to see how the weather is. Someone said that the one at Sonic starts this month as well.
Let me know how your distributor rebuild goes. Mine needs done as well. Gear doesnt drive the cable.
Rodney

rod75152011-04-09 17:42:41

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4/9/11 7:48pm - Reply: 'Dern it..tach broke!'
yostusota
Former Member
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York, PA - USA

Vette(s):
1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top

Joined: 5/18/2010
Posts: 1518
Ah you know how these old cars are..they just break for no apparent reason..I was at Sonic today..maybe 75 cars I guess..actually a few cars I haven't seen before..is that ice cream place where Dealin Daves was? He threw some great times in there when he did that party once a year.. burnouts and beer..I have the parts list started..might shoot for the end of the week..or next..to rebuild..wish this crap would happen when its winter time...

Rich

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My first parade at Carlisle 2010
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4/18/11 9:50am - Reply: 'Dern it..tach broke!'
yostusota
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York, PA - USA

Vette(s):
1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top

Joined: 5/18/2010
Posts: 1518
Ok a little update..got me parts..but..now I need a shaft also..got to say that I ordered this stuff from Corvette America..I order in the morning and get it the next day..got the whole parts kit..even the bushings..they have a new style tach drive gear and guide that uses needle bearings in it..pretty Dern cool..I took a pic of the bad shaft and an aluminum tag that was on it also..I will have to figure out what it all means!

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My first parade at Carlisle 2010
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4/18/11 12:09pm - Reply: 'Dern it..tach broke!'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19457
Be VEEEEWWY Careful with that tag!!! They will self destruct quite easily!!
The tag has the part number, and date on it. The part number identifies what engine the dist is set up  for, so be sure the tag stays with the dist, even if you have to put it in a small box, or bag somewhere, so it doesn't get damaged.

Yer shaft is toast, fer sher....dangit. Also, be careful when replacing the bushings in the dist. There are a LOT of them out there that are not the correct O/D, and lots of guys are busting their distributors pressing them in...they are too large. If there is not very much play in the shaft on the bushings, I wouldn't mess with them....my opinion. You don't wanna end up with a busted dist housing, too....


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Joel Adams
C3VR Lifetime Member #56    
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(click for Texas-sized view!)
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"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
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4/18/11 12:24pm - Reply: 'Dern it..tach broke!'
yostusota
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York, PA - USA

Vette(s):
1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top

Joined: 5/18/2010
Posts: 1518
I noticed the tag was very thin..I may leave it off and put it with the POP and other paperwork..be honest with you about the bushings..they really don't feel bad..they just had them and the install tool to do them..so I bought em..I have to wait and see how the new shaft fits in there before I go that route..still..how does one get them out??? That looks harder than install!! Anyhow what's the opinion on using the new shafts cam?? I have found that it used to be removed off the old one and brazed onto the new one..is this really necessary? ? Anyhow I will wait on the new shaft..

Rich

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4/18/11 7:11pm - Reply: 'Dern it..tach broke!'
danascar
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Germansville, PA - USA

Vette(s):
1974 Coupe 358ci 4 speed Black w/Medium Saddle interior w/79 custom leather seats. 1999 Covertible, 6 speed, Atomic orange, Oak interior

Joined: 1/28/2010
Posts: 763
Rich...I have a complete tach drive distributor out my 74 just laying on the worbench if ya want it. Yanked it out when I went to HEI. Even has cap and accel plug wires on it yet.  Found new HEI tach drive dist for $119.  Smile

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