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Which Way Does The Crank Angle Sensor Go Back In On Rb25 Det Please Help Me Working On It As I Speak

danny14

By danny14,
in Engines & Forced Induction

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danny14 Mentor

danny14

Posted
Posted

hey guys i just pulled out my cas to have a look at it casue i got missfire probs and i put it back in assuming it only goes one way and i cant get a reading of 10 deg btdc with timing light the cas wont spin anymore anti clockwise

please help me asap cheers

danny14 Mentor

danny14

Posted
  • Author
Posted

yeah i just put it in how i got it out ! it can only slot in one way right ?

i cant get 10 deg btdc it wont spin anti clockwise anymore

OMGGTR Mentor

OMGGTR

Posted
Posted

i just did the waterpump on my rb20 is the 25 the same setup with the cas? if so all i did was scribe around the nuts b4 i took it off and the pinion in the middle was half moon only goes one way... also around the cas input it has teeth so it was fairly straight forward...

GTRNUR Grand Master

GTRNUR

Posted
Posted

You need to know what the static timing at idle the ECU is set to deliver. Your tuner might have set it at something out of the ordinary, so it needs to be set at that.

Now... if you know the static idle is 10,15 or 20 degrees and still can't get the correct timing, then the problem is the configuration of the CAS trigger angle, and that trigger will need to be altered.

If you told us what type of ECU it would help.

Also, keep in mind that if you do correct the Trigger settings for the ECU, and get the correct ignition at idle again (15-20BTDC optimal)... then chances are you will have to have your ignition maps fixed too, as altering the main trigger detection angle alters the base calculations for all your ignition maps.

In other words... drive it and potentially have an expensive BANG!

Use caution and seek expert advice if your not sure.

danny14 Mentor

danny14

Posted
  • Author
Posted

all i done was pulled it out and went to put it back in an then wanted to change the ignition timing to 10 instead of 5 like it was originally

i am runnin a link ecu

i just wana get it back in thr right loction i set the advance limit back to zero on hand controller and i cant get it past 5 the cas wont go anti clock wise anymore please tell me wat to do

cheers

rob82 Mentor

rob82

Posted
Posted
all i done was pulled it out and went to put it back in an then wanted to change the ignition timing to 10 instead of 5 like it was originally

i am runnin a link ecu

i just wana get it back in thr right loction i set the advance limit back to zero on hand controller and i cant get it past 5 the cas wont go anti clock wise anymore please tell me wat to do

cheers

Is there a half moon key in the camshaft and the CAS?

Cefiro RB26 Apprentice

Cefiro RB26

Posted
Posted

HI mate, i think i can help

Do you have timing light? always check timing before removal so as to have same performance afterwards.! for next time.

.

1. re fit cas aligning the half moon carefully ( as they can break off) if it does leave it in the cas.

2. grab timing light connect it to your loop wire near ignition module at top rear of engine above coils.

point in direction of timing marker. If u cannot see markers follow on to next step

3. grab a mate or girlfriend and get them to slowly open the spring face of magnetic pick up (on loop wire) while you are still watching timing marks. you will notice that the marks now align with 5deg markers increments. use your under bonnet stickers as guide for factroy ECU timing.

Aftermarket you will need to get engine warm interface with ECU read what base timing is once car is warm set to to this. you will need to rev engine and hold at 1500 or less to make sure that ecu reads same as timing marks.

3a if having trouble another way to get no1 timing is to remove valley cover and connect timing pick up to centre wire of 3 ( just more hassle on some cars)

i hope this is not to late

Cefiro RB26 Apprentice

Cefiro RB26

Posted
Posted
all i done was pulled it out and went to put it back in an then wanted to change the ignition timing to 10 instead of 5 like it was originally

i am runnin a link ecu

i just wana get it back in thr right loction i set the advance limit back to zero on hand controller and i cant get it past 5 the cas wont go anti clock wise anymore please tell me wat to do

cheers

most ecu's have lock timing with 10-15 deg this is used to set timing.

I would prefer if you set everything to way it was.

read what timing the hand controller is saying hope fully it reads 15-20deg

follow the previous post .

im online all day today to help guide you through.

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