tachometer connect

Florent.turbo · 07-16-2008, 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 · 07-16-2008, 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 · 07-16-2008, 12:26 PM

Ok thank's Joe,i will try this.

Florent.turbo · 07-17-2008, 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 · 07-18-2008, 07:19 AM

Sound like it's not cycling correctly

Olds64 · 07-18-2008, 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 · 07-20-2008, 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 · 07-20-2008, 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 · 07-20-2008, 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 · 07-21-2008, 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 · 07-21-2008, 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 · 07-22-2008, 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 · 07-23-2008, 09:01 AM

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

Olds64 · 07-23-2008, 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 · 07-23-2008, 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

07-16-2008, 08:30 AM	#1 (permalink)
Florent.turbo Junior Member Join Date: Jul 2007 Posts: 19	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.

07-18-2008, 07:19 AM	#5 (permalink)
Redog Alero Chapter Secretary Join Date: Aug 2006 Location: Newtown, PA Posts: 750	Sound like it's not cycling correctly __________________ Me 2000 Alero running 14's 1985 Delta 88 w/1968 350 rocket 2005 Nissan Altima (her's)

07-18-2008, 01:01 PM	#6 (permalink)
Olds64 Landyacht Club President Join Date: Jul 2007 Location: Lawton, OK Posts: 1,531	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. __________________ "Some men are Baptists, others Catholics. My father was an OLDSMOBILE man." Ralphie Billingsley A Christmas Story 1983 "We rei-eign, supreme, ooooh god! Burrito supreme, and a chicken supreme, and a CUTLASS SUPREME!" Tenacious D 2007

07-20-2008, 09:01 AM	#8 (permalink)
BILL DEMMER Just the facts... Join Date: May 2008 Location: THE GREAT WIDE-OPEN Posts: 93	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)

07-20-2008, 01:01 PM	#9 (permalink)
Olds64 Landyacht Club President Join Date: Jul 2007 Location: Lawton, OK Posts: 1,531	I know you can get tachometers adjusted. If it has never been serviced then maybe 42 years have caused it to read inaccurately. __________________ "Some men are Baptists, others Catholics. My father was an OLDSMOBILE man." Ralphie Billingsley A Christmas Story 1983 "We rei-eign, supreme, ooooh god! Burrito supreme, and a chicken supreme, and a CUTLASS SUPREME!" Tenacious D 2007

07-16-2008, 12:26 PM	#3 (permalink)
Florent.turbo Junior Member Join Date: Jul 2007 Posts: 19	Ok thank's Joe,i will try this.

07-17-2008, 09:45 AM	#4 (permalink)
Florent.turbo Junior Member Join Date: Jul 2007 Posts: 19	Yes, i have try this today ,it's great... it works but my idle is low -> ~ 400 rpm it's normal doctor ?

07-20-2008, 04:06 AM	#7 (permalink)
Florent.turbo Junior Member Join Date: Jul 2007 Posts: 19	No, my tachometer comes from a oldsmobile 1966,no switch inside, but was there a tachometer for a 6-cylinder that time?

07-21-2008, 11:06 AM	#10 (permalink)
Florent.turbo Junior Member Join Date: Jul 2007 Posts: 19	I have to find a 2nd tachometer to compare i thank's you all guys for your answers , i will back later

07-21-2008, 11:22 AM	#11 (permalink)
Olds64 Landyacht Club President Join Date: Jul 2007 Location: Lawton, OK Posts: 1,531	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. __________________ "Some men are Baptists, others Catholics. My father was an OLDSMOBILE man." Ralphie Billingsley A Christmas Story 1983 "We rei-eign, supreme, ooooh god! Burrito supreme, and a chicken supreme, and a CUTLASS SUPREME!" Tenacious D 2007

07-22-2008, 01:54 AM	#12 (permalink)
nohn Member Join Date: Oct 2006 Location: Naples, Italy Posts: 68	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.

07-23-2008, 09:01 AM	#13 (permalink)
Florent.turbo Junior Member Join Date: Jul 2007 Posts: 19	This is my tach ... he comes of ebay motors Last edited by Florent.turbo : 07-23-2008 at 09:06 AM.

07-23-2008, 11:03 AM	#14 (permalink)
Olds64 Landyacht Club President Join Date: Jul 2007 Location: Lawton, OK Posts: 1,531	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. __________________ "Some men are Baptists, others Catholics. My father was an OLDSMOBILE man." Ralphie Billingsley A Christmas Story 1983 "We rei-eign, supreme, ooooh god! Burrito supreme, and a chicken supreme, and a CUTLASS SUPREME!" Tenacious D 2007

07-23-2008, 07:43 PM	#15 (permalink)
southcarolina803 71'OldsCutty Join Date: Jun 2008 Location: Gulfport, MS Posts: 87	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

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Tic Toc Tach - Tachometer Schematic	70cutlasssupreme	Electrical	1	07-29-2007 08:55 PM