tachometer connect

Florent.turbo · July 16th, 2008, 08:30 AM

Hello, I would like to install a tachometer of a oldsmobile 1966 in my cutlass 1968 with ignition HEI, Can i directly connect the pulse of the tachometer on the point TACH of my Ignition HEI ?

Thank's for your answer.

joe_padavano · July 16th, 2008, 08:57 AM

Quote:

Originally Posted by Florent.turbo

Hello, I would like to install a tachometer of a oldsmobile 1966 in my cutlass 1968 with ignition HEI, Can i directly connect the pulse of the tachometer on the point TACH of my Ignition HEI ?

Thank's for your answer.

Yes, that's what the TACH terminal is for.

Florent.turbo · July 16th, 2008, 12:26 PM

Ok thank's Joe,i will try this.

Florent.turbo · July 17th, 2008, 09:45 AM

Yes, i have try this today ,it's great... it works
but my idle is low -> ~ 400 rpm it's normal doctor ?

Redog · July 18th, 2008, 07:19 AM

Sound like it's not cycling correctly

Olds64 · July 18th, 2008, 01:01 PM

You might check your tachometer to see if there is a switch on the back of it. Sometimes tachometers will have a switch which differentiates between 4 cylinder and 8 cylinder. This could cause your tachometer reading to be bad.

Florent.turbo · July 20th, 2008, 04:06 AM

No, my tachometer comes from a oldsmobile 1966,no switch inside, but was there a tachometer for a 6-cylinder that time?

BILL DEMMER · July 20th, 2008, 09:01 AM

does it seem like the engine is actually idling at 400 rpm?
what is the reading an external tach gives you?

factory tachs aren't usually very accurate, btw.

bill

Olds64 · July 20th, 2008, 01:01 PM

I know you can get tachometers adjusted. If it has never been serviced then maybe 42 years have caused it to read inaccurately.

Florent.turbo · July 21st, 2008, 11:06 AM

I have to find a 2nd tachometer to compare

i thank's you all guys for your answers , i will back later

Olds64 · July 21st, 2008, 11:22 AM

You can generally rent a tachometer at the local auto parts store. Or at least, you used to be able to get ahold of them.

nohn · July 22nd, 2008, 01:54 AM

Where did you order your tachometer and is it the cluster tach? The set of 3 that reads your oil, RPM, and volts or water temp? I have seen a few Olds with them below the dash, but I am having trouble finding them. Thanks

Florent.turbo · July 23rd, 2008, 09:01 AM

This is my tach ... he comes of ebay motors

Olds64 · July 23rd, 2008, 11:03 AM

What does the needle do when you rev it to 8500 rpm? I thought you put a girdle and aftermarket connecting rods on your engine.

southcarolina803 · July 23rd, 2008, 07:43 PM

you can get the clusters from advanced auto, ebay, amazon, autogage are really good guages yet expensive, auto zone has a cluster set for like 32 bucs for a cluster of sunpro and i found a guy on ebay who makes classic looking housings here is a reference link to him http://cgi.ebay.com/ebaymotors/ws/eB...266025753&rd=1

Florent.turbo · September 10th, 2008, 03:26 AM

hello , i m back

i tried to connect a new autometer tach and he done ~500 rpm at idle on PARK (with AT)

How should lie idle ideal? 800 rpm at idle?

thank you

Rallye469 · September 10th, 2008, 06:38 AM

Is it running smooth?
Leave it where it is.
If it doesn't die when you put it in gear, or at a light it's fine.

BILL DEMMER · September 10th, 2008, 07:18 AM

iirc, the range is 550-650 in drive.

bill

mugzilla · September 10th, 2008, 08:02 AM

The police get their speedo and tach calibration done somewhere . I call them and ask for the local shop .

Florent.turbo · September 10th, 2008, 01:10 PM

when I start the engine, I must push the accelerator pedal depressed slightly for a few seconds otherwise the engine stalls. engine hot or no. (i don't have a choke)

I shall check by raising a little slowed to 550-650 rpm on drive to see...

thank

July 16th, 2008, 08:30 AM	#1 (permalink)
Florent.turbo Junior Member Join Date: Jul 2007 Posts: 21	tachometer connect Hello, I would like to install a tachometer of a oldsmobile 1966 in my cutlass 1968 with ignition HEI, Can i directly connect the pulse of the tachometer on the point TACH of my Ignition HEI ? Thank's for your answer.

July 18th, 2008, 07:19 AM	#5 (permalink)
Redog Alero Chapter Secretary Join Date: Aug 2006 Location: Newtown, PA Posts: 1,165	Sound like it's not cycling correctly __________________ Me 2000 Alero running 14's 1967 Olds 330 motor sitting on a stand 1985 Delta 88 w/1968 350 rocket ( MURDERED )

July 18th, 2008, 01:01 PM	#6 (permalink)
Olds64 Landyacht Club President Join Date: Jul 2007 Location: Lawton, OK Posts: 5,168	You might check your tachometer to see if there is a switch on the back of it. Sometimes tachometers will have a switch which differentiates between 4 cylinder and 8 cylinder. This could cause your tachometer reading to be bad. __________________ Ferris, my father loves this car more than life itself... Apparently, you don't understand! Ferris, he never drives it! He just rubs it with a diaper! Cameron Frye Ferris Bueller's Day Off 1986

July 20th, 2008, 09:01 AM	#8 (permalink)
BILL DEMMER Just the facts... Join Date: May 2008 Location: THE GREAT WIDE-OPEN Posts: 209	does it seem like the engine is actually idling at 400 rpm? what is the reading an external tach gives you? factory tachs aren't usually very accurate, btw. bill __________________ '67 CUTLASS 4-DR. W/425 & S.P. THM400 (NAMED "ERNIE") '83 H/O #1339(STILL IN PIECES) '85 PONTIAC FIERO SE V-6 4-SPD. BOUGHT NEW '92 CHEBBY DIS-ASTRO (GAS PIG) '97 GYRO METRO $HYTBOX (41.42 MPG)

July 20th, 2008, 01:01 PM	#9 (permalink)
Olds64 Landyacht Club President Join Date: Jul 2007 Location: Lawton, OK Posts: 5,168	I know you can get tachometers adjusted. If it has never been serviced then maybe 42 years have caused it to read inaccurately. __________________ Ferris, my father loves this car more than life itself... Apparently, you don't understand! Ferris, he never drives it! He just rubs it with a diaper! Cameron Frye Ferris Bueller's Day Off 1986

July 16th, 2008, 12:26 PM	#3 (permalink)
Florent.turbo Junior Member Join Date: Jul 2007 Posts: 21	Ok thank's Joe,i will try this.

July 17th, 2008, 09:45 AM	#4 (permalink)
Florent.turbo Junior Member Join Date: Jul 2007 Posts: 21	Yes, i have try this today ,it's great... it works but my idle is low -> ~ 400 rpm it's normal doctor ?

July 20th, 2008, 04:06 AM	#7 (permalink)
Florent.turbo Junior Member Join Date: Jul 2007 Posts: 21	No, my tachometer comes from a oldsmobile 1966,no switch inside, but was there a tachometer for a 6-cylinder that time?

July 21st, 2008, 11:06 AM	#10 (permalink)
Florent.turbo Junior Member Join Date: Jul 2007 Posts: 21	I have to find a 2nd tachometer to compare i thank's you all guys for your answers , i will back later

July 21st, 2008, 11:22 AM	#11 (permalink)
Olds64 Landyacht Club President Join Date: Jul 2007 Location: Lawton, OK Posts: 5,168	You can generally rent a tachometer at the local auto parts store. Or at least, you used to be able to get ahold of them. __________________ Ferris, my father loves this car more than life itself... Apparently, you don't understand! Ferris, he never drives it! He just rubs it with a diaper! Cameron Frye Ferris Bueller's Day Off 1986

July 22nd, 2008, 01:54 AM	#12 (permalink)
nohn Registered User Join Date: Oct 2006 Location: Naples, Italy Posts: 77	Where did you order your tachometer and is it the cluster tach? The set of 3 that reads your oil, RPM, and volts or water temp? I have seen a few Olds with them below the dash, but I am having trouble finding them. Thanks __________________ Good things don't happen to everyone! Only to those who get up to receive them.

July 23rd, 2008, 09:01 AM	#13 (permalink)
Florent.turbo Junior Member Join Date: Jul 2007 Posts: 21	This is my tach ... he comes of ebay motors Last edited by Florent.turbo; July 23rd, 2008 at 09:06 AM..

July 23rd, 2008, 11:03 AM	#14 (permalink)
Olds64 Landyacht Club President Join Date: Jul 2007 Location: Lawton, OK Posts: 5,168	What does the needle do when you rev it to 8500 rpm? I thought you put a girdle and aftermarket connecting rods on your engine. __________________ Ferris, my father loves this car more than life itself... Apparently, you don't understand! Ferris, he never drives it! He just rubs it with a diaper! Cameron Frye Ferris Bueller's Day Off 1986

July 23rd, 2008, 07:43 PM	#15 (permalink)
southcarolina803 71'OldsCutty Join Date: Jun 2008 Location: Gulfport, MS Posts: 90	you can get the clusters from advanced auto, ebay, amazon, autogage are really good guages yet expensive, auto zone has a cluster set for like 32 bucs for a cluster of sunpro and i found a guy on ebay who makes classic looking housings here is a reference link to him http://cgi.ebay.com/ebaymotors/ws/eB...266025753&rd=1 __________________ 1971 Olds Cutlass Supreme/350 "So many options, not enough knowledge" - Me

September 10th, 2008, 03:26 AM	#16 (permalink)
Florent.turbo Junior Member Join Date: Jul 2007 Posts: 21	hello , i m back i tried to connect a new autometer tach and he done ~500 rpm at idle on PARK (with AT) How should lie idle ideal? 800 rpm at idle? thank you

September 10th, 2008, 06:38 AM	#17 (permalink)
Rallye469 Senior Member Join Date: Feb 2008 Posts: 236	Is it running smooth? Leave it where it is. If it doesn't die when you put it in gear, or at a light it's fine. __________________ '70 Rallye 350 '65 F-85 http://www.youtube.com/watch?v=CCw-JmwNGZQ

September 10th, 2008, 07:18 AM	#18 (permalink)
BILL DEMMER Just the facts... Join Date: May 2008 Location: THE GREAT WIDE-OPEN Posts: 209	iirc, the range is 550-650 in drive. bill __________________ '67 CUTLASS 4-DR. W/425 & S.P. THM400 (NAMED "ERNIE") '83 H/O #1339(STILL IN PIECES) '85 PONTIAC FIERO SE V-6 4-SPD. BOUGHT NEW '92 CHEBBY DIS-ASTRO (GAS PIG) '97 GYRO METRO $HYTBOX (41.42 MPG)

September 10th, 2008, 08:02 AM	#19 (permalink)
mugzilla is Fast Enough ... Join Date: Jul 2008 Location: dogtown Posts: 1,254	The police get their speedo and tach calibration done somewhere . I call them and ask for the local shop .

September 10th, 2008, 01:10 PM	#20 (permalink)
Florent.turbo Junior Member Join Date: Jul 2007 Posts: 21	when I start the engine, I must push the accelerator pedal depressed slightly for a few seconds otherwise the engine stalls. engine hot or no. (i don't have a choke) I shall check by raising a little slowed to 550-650 rpm on drive to see... thank

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