SR Speed Sensor question

[dogg4217]

I've been searching for awhile and I've seen conflicting stories. So if you are 100% sure please answer this

I have a 93 s13 hatch that had a automatic in it.

I have swapped to a s13 SR20. The SR transmission has the stock SR speed sensor in it. Will this read with my dohc cluster accurately? I've seen people say that it will read KMH and throw my speed off.

I've seen people say ka and sr manual are interchangeable, which I know you can use a s13 ka manual speed sensor in the sr transmission, but why pay for a speed sensor if the sr speed sensor will work fine.

This is the reason for my question. I've been searching the last 3 pages that came up but there are 100's of threads when searching for "speed sensor"

[pauliedrft]

Spend the time searching . people will get Pi$$ed . i spend about 2 hours a day just researching .....

Sorry i was worng corrected post i must have been thinking to much about the s-14 sr20det i getting prepared to do this swap ...
Modified by pauliedrft at 1:03 PM 10/14/2008

[Emperor_Tha]

s13 sr speed sensor will read corectly if it's used in a s13 body

Only time it should be switch if the motor is a s14 and the body is a s13 and vise versa

[the converted]

you must use the usdm speed censor for your cluster to read in miles per hour , not kilometers per hour .. but next time spend the time searching . people will get Pi$$ed . i spend about 2 hours a day just researching .....

I'd worry more about people being pissed for spewing off wrong answers, but that's just me.

Dogg, it will work just fine.

[Hijacker]

you must use the usdm speed censor for your cluster to read in miles per hour , not kilometers per hour .. but next time spend the time searching . people will get Pi$$ed . i spend about 2 hours a day just researching .....

I have half a mind to delete your post because it is absolutely, completely wrong.

We've proven that the US and JDM sensor pull the same part number in FAST. If you really spent some time searching, you would have seen this in threads of the past. Also, the only difference between a JDM gauge and a US gauge is that the US gauge has MPH as well as KPH, and guess what?? The KPH on both gauges match! You do the math on that one.

Sensors do have to be calibrated to a gauge to work perfectly, that's why there is a fine adjustment screw on each speedometer. Also, a number of things throw a sensor off. Tire size for one. Not every tire is made at the exact same outer diameter, plus this number changes as a tire wears down. This is also why most localities don't ticket at 5 mph over the limit due to a law school reject could argue the point.

I have personally used JDM speed sensors and done a 60 MPH test on the highway and it works fine. The only reason I tend to use a US sensor is just to keep the sensor mated to its gauge, but if I do a swap on an auto chassis, I have no hesitation to use the JDM 5 speed sensor.

[dogg4217]

I have half a mind to delete your post because it is absolutely, completely wrong.

We've proven that the US and JDM sensor pull the same part number in FAST. If you really spent some time searching, you would have seen this in threads of the past. Also, the only difference between a JDM gauge and a US gauge is that the US gauge has MPH as well as KPH, and guess what?? The KPH on both gauges match! You do the math on that one.

Sensors do have to be calibrated to a gauge to work perfectly, that's why there is a fine adjustment screw on each speedometer. Also, a number of things throw a sensor off. Tire size for one. Not every tire is made at the exact same outer diameter, plus this number changes as a tire wears down. This is also why most localities don't ticket at 5 mph over the limit due to a law school reject could argue the point.

I have personally used JDM speed sensors and done a 60 MPH test on the highway and it works fine. The only reason I tend to use a US sensor is just to keep the sensor mated to its gauge, but if I do a swap on an auto chassis, I have no hesitation to use the JDM 5 speed sensor.

Thank you. This is my first sr20 swap. Hell first swap in a 240. I've done a couple dozen swaps in my time as a backyard mechanic. So I've spent months reading up on certain things I have questions about. When it came to the speed sensor I was getting conflicting stories.

There where hundreds of threads on the speed sensor topic and quite frankly I don't have time to sift through all of them. I mean after I awhile I could have found the answer but I thought posting a thread on the topic would help. And it seems another member on here has learned that he was wrong on the speed sensor and now knows the correct answer.

I do hesitate posting threads on here and zilvia because 9 out of 10 they are going to say SEARCH

Hell almost every question you have on a 240 there is a thread on it somewhere but in my case I don't have hours to spend sometimes so a quick thread will help. Then I came come back in a day and have my answer.

So thanks. Now I know I don't have to spend money buying a USDM speed sensor. It makes sense now that it will work because like you said a USDM cluster still has kmh reading on it. I did find out by trial and error in the garage a Auto speed sensor will not work in a manual transmission

[Hijacker]

Yeah. That's always exciting when you're going down the highway with your speedometer pegged funny because of the wrong sensor being in the trans.

I don't mind some of the redundant threads on here. If everyone searched for the info, new topic creation would be slow. I usually get irate when I see 3 threads on the same subject on the top page.

the only downside is that there is a greater chance for false, or inaccurate information to be disseminated with each new version of the topic.

[pauliedrft]

I have half a mind to delete your post because it is absolutely, completely wrong.

We've proven that the US and JDM sensor pull the same part number in FAST. If you really spent some time searching, you would have seen this in threads of the past. Also, the only difference between a JDM gauge and a US gauge is that the US gauge has MPH as well as KPH, and guess what?? The KPH on both gauges match! You do the math on that one.

Sensors do have to be calibrated to a gauge to work perfectly, that's why there is a fine adjustment screw on each speedometer. Also, a number of things throw a sensor off. Tire size for one. Not every tire is made at the exact same outer diameter, plus this number changes as a tire wears down. This is also why most localities don't ticket at 5 mph over the limit due to a law school reject could argue the point.

I have personally used JDM speed sensors and done a 60 MPH test on the highway and it works fine. The only reason I tend to use a US sensor is just to keep the sensor mated to its gauge, but if I do a swap on an auto chassis, I have no hesitation to use the JDM 5 speed sensor.

I changed my post and have been researching the s-14 sr swap into the s-13. (i.E watching the wiring video i bought .) mostly the s-14 into the s-13 part ..