Sun Tach

[ORIGLS6]

I have an SST70 and two SST90s, all three have a green stripe vs. the blue stripe, all three have white needles, and all three require the EB transmitter.
I was always under the impression that the 7K & 9K 270° 'Super Tachs' (green line) required the sender and the 8K & 10K (blue line) were transistorized.

[Verne_Frantz]

Dennis,
Going from what I can gather from my old speed equip. catalogs, all the 800 "series" Super tachs were fully transistorized, regardless of max rpm. The one pictured is model 801, which was the 10K tach. The catalog pictures of the 700 series tach (which required the sender) doesn't say SUPER tach on the face. The '69 catalog mentions the newly designed 270' circle and red needle for better viewing (that's on the 800 series). The description doesn't mention a changed face on the 700 series. I have a hunch that the color band doesn't necessarily mean it needs a sender or not. Just going by what the catalog blurb says. I could be wrong.

[SuperNovaSS]

Looks at the back, I would say it is about a 72-75 model. The earlier models have a different style back. I would post pictures but I am oiut of town for the holiday. Either way, the face is the 69 up style. An awesome tach that it for 8 cylinder 12 volt applications and does not require a sender.

Jason

And what you have (along with its 8,000 RPM brother) was the tach of choice in the late sixties and early seventies. Man there must have been thousands bolted to either the top of the dash or clamped to steering columns. One I had moved from car to car <g>.

Wayne Scraba

[69 Post Sedan]

Thanks for the responses. I agree...I think it's from the early to mid 70's.

I actually bought two of them with cups and mounting brackets. Although both the brackets are for a dash mount and I wanted a steering wheel mount.

Kurt

[69 Post Sedan]

Thanks for all the replies!

One more question...for now.

The 8k and one of the 10k tachs work perfect. The other 10k tachs is not cooperating.

When the ignition is turned on and the needle buries itself at the 10k mark and stays there even when the motor is running.

And yes...I double checked that I had the tach wired correctly.