i have a 96 civic dx and i put in a 99-00 si cluster everythin works fine but the speed is off bout 5mph and the tach is off bout 300rpm but when the dx cluster is in it works fine is there any way i can fix it so itll read right?????

 

it could be your tires, sometimes that effects things. when i got new tires my speedo went off by about 3 or 4 mph.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b16ek &raquo;</TD></TR><TR><TD CLASS="quote">i have a 96 civic dx and i put in a 99-00 si cluster everythin works fine but the speed is off bout 5mph and the tach is off bout 300rpm but when the dx cluster is in it works fine is there any way i can fix it so itll read right????? </TD></TR></TABLE>


What size wheels?

 

sounds like your si cluster is fawked. your tire size wouldnt matter for your RPM.

 

the rims are 16s

 

how do you know your DX Cluster isnt off? There are a lot of variables with clusters.

Also how do you know the Si if off by those exact numbers? Do you have a 2nd MPH and RPM gauge wired into the car? What kind of control are you using to test the gauges?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Vero &raquo;</TD></TR><TR><TD CLASS="quote">Do you have a 2nd MPH and RPM gauge wired into the car? ?</TD></TR></TABLE>

exactly. what is it that makes you think that its off?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Vero &raquo;</TD></TR><TR><TD CLASS="quote">how do you know your DX Cluster isnt off? There are a lot of variables with clusters.

Also how do you know the Si if off by those exact numbers? Do you have a 2nd MPH and RPM gauge wired into the car? What kind of control are you using to test the gauges?</TD></TR></TABLE>

Exactly. A lot of the times the tach will be off by a couple hundered RPMs as they get older.

 

I know on swaps often times the tach is off. On my 96 civic w/ b18c the tach is off by about 400 rpms and the speedo is off by 5%. When im going 75 it says 80. And I even have larger tires too. I hope when I swap in an Si cluster this prob will b fixed.

 

i have a si cluster in my 99 ek and the speedo is off, also have si wheels.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JeffBro &raquo;</TD></TR><TR><TD CLASS="quote">I know on swaps often times the tach is off. On my 96 civic w/ b18c the tach is off by about 400 rpms and the speedo is off by 5%. When im going 75 it says 80. And I even have larger tires too. I hope when I swap in an Si cluster this prob will b fixed.</TD></TR></TABLE><TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sgtroseberry &raquo;</TD></TR><TR><TD CLASS="quote">i have a si cluster in my 99 ek and the speedo is off, also have si wheels.</TD></TR></TABLE>

and what control are both you using?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mugen112 &raquo;</TD></TR><TR><TD CLASS="quote">sounds like your si cluster is fawked. your tire size wouldnt matter for your RPM.</TD></TR></TABLE>


You really think that. Were talking (revolutions per minute). If you roll a 17' tire, and a 15" tire down the same hill. The smaller tire has a higher rpm. O, now u get it.

 

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


You really think that. Were talking (revolutions per minute). If you roll a 17' tire, and a 15" tire down the same hill. The smaller tire has a higher rpm. O, now u get it.</TD></TR></TABLE>

O, Wait a second.

except with an RPM gauge, we are refering to the engine, not how many rotations the tire makes.

The size of the tire has no impact on your engine RPM, it can however, effect your MPH because the stock sensor expects the tire to rotate X number of times a certain speed. By increasing or decreasing the size you change the number of rotations to be needed at the same said speed.

 

Great point but next time mind ur f'n business. U failed to c the analogy. O' by the way ***, the speed sensor works off of the tires rpm. so yes it would effect the rpm's of the vehicle the engine wasn't in question.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bcuz &raquo;</TD></TR><TR><TD CLASS="quote">Great point but next time mind ur f'n business. U failed to c the analogy. O' by the way ***, the speed sensor works off of the tires rpm. so yes it would effect the rpm's of the vehicle the engine wasn't in question.</TD></TR></TABLE>

My "f'n" business? shut the hell up. This is a forum with questions and information. This person asked a question, and you are giving incorrect information.

I understood your analogy fine, yes it's true, the RPM of the smaller wheel will be rolling quicker (provided they are rolling at the same speed). That still has nothing to do with how your RPM gauge would read now does it?

We are talking about the RPM being off in the gauge cluster. Where tire and wheel size has no effect over how that reads.
When you start the car does your cluster sit at 0 until you start moving? NO.
When you are in neutral and hit the gas do your wheels spin? No.
Does the RPM of the engine rise, causing the RPM gauge to rise? Yes.

At best, wheel and tire size would effect the MPH output. I say at best because it is a marginal difference unless you jump to extreme sizes.

 

His friggin mph is off, so no u didn't get my analogy. "speed is off bout 5mph", that's were the tire thing came into play (relative speed). No one said he was standing still, his damn speedometer is off, so he's moving, so yes tires would affect that. Thanks for ur crash course in physics.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bcuz &raquo;</TD></TR><TR><TD CLASS="quote">
You really think that. Were talking (revolutions per minute). If you roll a 17' tire, and a 15" tire down the same hill. The smaller tire has a higher rpm. O, now u get it.</TD></TR></TABLE>

I don't see how a taller tire will affect the RPMs. A taller tire will effect the engine by making it take longer to rev up, but it's not going to throw off the tach.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bcuz &raquo;</TD></TR><TR><TD CLASS="quote">His friggin mph is off, so no u didn't get my analogy. "speed is off bout 5mph", that's were the tire thing came into play (relative speed). No one said he was standing still, his damn speedometer is off, so he's moving, so yes tires would affect that. Thanks for ur crash course in physics.</TD></TR></TABLE>

You quoted someone saying tires size wouldnt effect RPMs, and then tried to correct them. I, and already another reader clearler did not see your point as clearly as you are thinking it.

And once again, switching clusters will not just be 5mph off. He would of been off already if he had larger tires. This person still hasnt mentioned any controll over testing his speed. As far as I know, his friend was in the car next to him saying "Okay 45 mph....... .... now!" which really is not very accurate now is it?

 

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

You quoted someone saying tires size wouldnt effect RPMs, and then tried to correct them. I, and already another reader clearler did not see your point as clearly as you are thinking it.

And once again, switching clusters will not just be 5mph off. He would of been off already if he had larger tires. This person still hasnt mentioned any controll over testing his speed. As far as I know, his friend was in the car next to him saying "Okay 45 mph....... .... now!" which really is not very accurate now is it?</TD></TR></TABLE>


OMG I knew that was coming, u know what VERO, ur right. In the middle of helping my oldest daughter with her homework and having a minute to check real quick on this site and having math on my brain, I tried to answer a question, that my mind didn't interpret correctly. So for being an *******, I apologize. Name calling doesn't help and neither does directing frustration towards someone. I had a brain fart, this happens I am polish. I didn't live up to what my signature promises&gt; "I'm cool peoples". And no my daughters aren't standing over my shoulder, this comes from a person that had some time to himself and now has a clear head. I hope u understand, we all make mistakes.

 

leave Bcuz alone...he didn't know what rpm means...because obviously when everyone on this board says their rpm is off...they're talking about the revolution per minute of the tire is off

 

expletive all of you punk wannabee bitches, suck my ***.

 

we can only take what we see, your information is correct, just applied to the wrong quote. Just trying to help this guy out, as you are.

 

Hey if its off consistantly no matter what speed look at my thread on how to reset your speedo meter it will work for both gauges.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bcuz &raquo;</TD></TR><TR><TD CLASS="quote">expletive all of you punk wannabee bitches, suck my ***.</TD></TR></TABLE>

Please stop now...for your own sake.

 

maybe get a snap-on scanner and hook it up and go for a drive...
or just hook up the scanner and rev it...
should work just fine.