Edward

Hi all,

Sorry if this is a bit of a cheesy question, but for those of you who have rotated the tach on your track cars, I was wondering what RPM you place at 12:00. Is there a rule of thumb here, or just what feels comfortable to you?

On my SC, for example, it's a stock (albeit rebuilt and healthy) engine with SC cams and SSIs as the only engine mods. I had the tach with 6K up top. But this engine revs so quickly and smoothly, I was worried about overreving inadvertantly so I placed 5200 at 12:00. Just wondering what you all do. Thanks!

Edward

JCP911S

I'd say put your maximum desired revs at 12. This is your shift point...essentially your personal redline

RedlineMan

Yeh...

What JCP said. It is so that you can "see" where you are at in RPM without having to take the extra time to actually focus your eyes on the gauge. I have all of my gauges positioned that way. The Series I 944 tach is desoigned to be read within the steering wheel's area. I also have my oil pressure and water temp gauges set so the expected and normal point where the needle resides is straight up. Simply with a quick glance I can peripherally see if everything is Kosher in much les time than if I really had to LOOK.

On some cars it is a matter of getting this normal range within your vision at all. 911 tachs can be obscured in their OE position.

Not a silly question, by the way.

cooz

put your "REDLINE" shift point at 12 o/clock

it only takes a minute to set and adjust...so just try it where you think you want it and adjust accordingly

Matt Marks

Anyone done this on a 944?

M758

Yes. This on my early 944.

I don't have any good pics, but tach moved from the right hole to the center hole and rotated to 6 is up. Perfect. Never seen it on late 944.

Jon Moeller

It's been done on the late cars, I think one of the Swedes.
Definitely on my "to do" list. Amazing how long those can get.
-Jon

Edward

Hey, thanks for the feedback, all. I appreciate it!

Edward

sweanders

Yep:

M758

Ok I'll bite...
... how'd you do that?

Larry Herman

Photoshop!

Matt Marks

No, the Tach. Speedo is in KPH.

Also love to know how you did it.

sweanders

Pikey7 made a scan a while back of the instument faces and I modified the tacho one to my liking, then I did this:

1: Remove the gauge cluster.
2: Modify the *.psd file to the way you want it, all I did was change the colour setting. Or you can use the one called "black_face_rev-1.psd".
3: Pull the tacho needle and boost gauge needle straight up from the dial face. Observe the white dots on the face for the boost and the edge of the tacho. The needles should be pointing towards these in a resting position.
4: Unscrew the two bolts on each side of the center (tacho) needle.
5: Print the PS file.
6: Center the tacho face over the printed tacho and cut around with a sharp paper knife.
7: Align the printed speedo face as you want it and punch holes for the two needles and the two screws.
8: Control the distance for the needle(s) and make sure that you fasten the needle(s) with the same distance from the bottom marking. I guess it would be easy to do an extra white mark for the needle in PS.
9: Put the face back and the printed tacho face on top and then fasten screws and put the gages back in the cluster frame.

I never removed the tacho gauge unit from the cluster and this is not necessary.

sweanders

Here is the link to pikey's original thread: https://rennlist.com/forums/showthre...ght=tacho+face

Jean

Edward, why don't you buy a kit from Techart or FVD with the 8k at 12 o'clock. I bought the kit, all white dials and installed it myself, easy. It cost me about $300+ and looks great.