just wondering if Honda Tachometers are usually off by about 200 rpms up top? im ask n this because the rev limit on my LS is 6800 but before i had it chipped with a raised rev limit, the needle would go up to about 7000. when i had my SAFC in my car, it would also show about 7000-7100 as my max rpm's whenever i redlined the motor. But here's the thing, when i got my car dyno'd and i hit the limiter, the graph only stopped at 6800 which is the stock revlimt.
also i am run n a 2-step/ full throttle launch on my car right now. i have it set at 4K rpms, but my tach shows about 4200 rpms. so is the tach off a bit.
the Idle rpm's looks like it's correct though. it's at 700-800 at warm idle

 

Honda tachs can be off. Often.

 

i personally have never seen a stock honda tach closer than 300 RPM. The are horribly innacurate in my experience.

 

They're like that on purpose. They read high to help protect the engine.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by The_Head &raquo;</TD></TR><TR><TD CLASS="quote">They're like that on purpose. They read high to help protect the engine.</TD></TR></TABLE>

lol, urban myth. Thats like saying honda engines make no torque in order to protect the tires.

ALmost ALL stock tachs are off, not just Honda's.

 

The tach in my crx is very inaccurate. It is dead on at 3000rpm, but everything above that it reads high, by as much as 900 rpm. The SFC-VTEC tells me 4400 rpm at 80 mph while the stock tach reads 5300. My friend has a 92 Integra GS-R and his tach seems to be extremely accurate, matching the rpm my SFC reads for each speed across the range, as far as I can tell. And yes, we have the same transmission.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JoeB18R &raquo;</TD></TR><TR><TD CLASS="quote">

Thats like saying honda engines make no torque in order to protect the tires.

</TD></TR></TABLE> That would be messed up, LOL.

 

but the thing is my SAFC said 7100 rpms when i hit redline and my needle was about 7100 rpms on the tach as well. but on the dyno graph print out it was dead on at 6800 rpms which is the stock LS rev limit

 

When I had my stock GS tach in with my B16, it was about 800rpm's off (and past the red too...so amusing to passengers). With the JDM XSi tach in, it's still about 300-400rpms off. My autometer tach hasn't done me wrong yet.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JoeB18R &raquo;</TD></TR><TR><TD CLASS="quote">

lol, urban myth. Thats like saying honda engines make no torque in order to protect the tires.

ALmost ALL stock tachs are off, not just Honda's.</TD></TR></TABLE>

for safety

 

In my 99 Civic Ex Coupe, my take reads 700rpm too high at 7500rpm.

I shift my h22 when the tach says 8200

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by The_Head &raquo;</TD></TR><TR><TD CLASS="quote">for safety</TD></TR></TABLE>

heh, god I hope you are mking a joke about the lack of torque in honda enginies and not saying tachs are off for safety!

 

yea some are. My 99 SI cluster is off by 200 rpm's

 

no, all are. my 00 Si's is off my 400 after 8K.

 

my ef9 tach seems pretty acurate but if the tach is off the how does the ecu read... i would assume its getting its own input(seperate from tach) but i dont know for sure. any input on this?

 

My GS-R one is off by about 200 RPM at redline. I hear most Type R tachs are off so much that you could convince people that you were revving to 9

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by alfaaay &raquo;</TD></TR><TR><TD CLASS="quote">My GS-R one is off by about 200 RPM at redline. I hear most Type R tachs are off so much that you could convince people that you were revving to 9 </TD></TR></TABLE>

...My CTR cluster is only off by like 300 RPM at 9000 RPM. I rev to 8900-9100 RPM according to my VAFC.

On the other hand, my EX cluster that I was running for over a year was off my like 1200 RPM at 8600 (which was my rev-limit on my old P73 ITR ecu). It was terrible. People used to get freaked out when my tach started going towards the "0" again when I shifted.

- Derek

 

mine is 50-100rpm off low rpms..
when i reline it its off by 200-300
when i too was at the dyno 2 days ago i keep going to 7.2 on my tach....on the dyno it stops at 6800

 

yeah my tach goes wacky innaccurate after 5000rpms. its almost like the car revs faster than the tach can. my tach in my CRX only goes up to 8000, so when my vafc says 9500 i dont know how far off it is

 

At low rpm's mine is accurate but like after 3,500 rpm its about 2 to 400 hundred rpm's higher.

 

my si-r cluster tach is off by only ~100rpm at 8900, so i guess im kinda lucky, but i have seen many that are off way more.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by importdude2000 &raquo;</TD></TR><TR><TD CLASS="quote">mine is 50-100rpm off low rpms..
when i reline it its off by 200-300
when i too was at the dyno 2 days ago i keep going to 7.2 on my tach....on the dyno it stops at 6800
</TD></TR></TABLE>

lol, i know what u mean. but i got a stand alone EMS ow and raised my rev limit to 7100 rpms. it's kinda scary see n my tach go to 7500 rpms when it really is not spin n that fast.

 

yah i get hella freaked
since am on stock valvetrain

i have a msd 6al 7k cut

 

is there anything special about spoon clusters (calibration) or are they off like the oem ones too?

 

My stock LS tach only goes to 8 so I shift it after it slightly passes the red