2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

New 13b first start. with Loud BOOM. Timing question

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Old Dec 1, 2011 | 07:40 PM
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New 13b first start. with Loud BOOM. Timing question

OK First off i swear i timed it the right way. But its a new engine. And I cant keep fooling with it unless i am sure the timing is correct.. because it went BANG. so maybe it was Flooded. But im not sure..

When i put the engine together i rotated the #1 rotor to tdc. With Front mark on crank pointing to the timeing marks. i then took the cas and lined up the dot to the Left black thingy. I know in this photo its not Lined up. but that was after i turned it over. If i dont have a mirror and the engine is in the car, what is the best way to make sure the rotor is in the correct location? thanks. in advance.

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Old Dec 1, 2011 | 07:49 PM
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I never tried it on a rotary but with bikes I always stick a screw driver down the spark plug whole, and rock the engine back and forth until the screw driver gets to its highest point. Ill try this tomoro in my car and report back lol.
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Old Dec 1, 2011 | 07:54 PM
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you are off... you want the pulley on the yellow mark, and the CAS to look like this
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Old Dec 1, 2011 | 08:07 PM
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From: Dot Island
Originally Posted by beefhole
you are off... you want the pulley on the yellow mark, and the CAS to look like this

Thanks. But the photo is blurry.. I cant see the dot mark
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Old Dec 1, 2011 | 08:09 PM
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https://www.rx7club.com/showthread.p...t=timing+issue
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Old Dec 1, 2011 | 08:16 PM
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From: Dot Island
Originally Posted by onefastrx712a

OH, my bad

Last edited by rx7_FREAKKK; Dec 1, 2011 at 08:18 PM.
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Old Dec 1, 2011 | 08:22 PM
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From: San Leon
Look at this from that thread



Originally Posted by HAILERS
Align the LEAD mark on the pulley with the fixed pin on the front cover.

Remove the flat black cover on top of the CAS held with two screws.

Look at the rotor of the CAS and how it has two *pointers* on its top area.

Then look at my attached jpg. The pointers should be cutting across the corners of the square looking, black, reluctors. IF so, then the CAS is installed right. IF not, then unlock the CAS and rotate it til the pointers cut across the corners of the black reluctors.

And or read this thread if needed: https://www.rx7club.com/showthread.p...=CAS+TOP+COVER
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Old Dec 1, 2011 | 08:23 PM
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From: Dot Island
Originally Posted by onefastrx712a
Look at this from that thread
Ill check it out,
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Old Dec 1, 2011 | 08:27 PM
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From: San Leon
look where the points are
Attached Thumbnails New 13b first start. with Loud BOOM. Timing question-002-10.jpg   New 13b first start. with Loud BOOM. Timing question-006-12.jpg  
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Old Dec 1, 2011 | 08:56 PM
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Originally Posted by youngfc
I never tried it on a rotary but with bikes I always stick a screw driver down the spark plug whole, and rock the engine back and forth until the screw driver gets to its highest point. Ill try this tomoro in my car and report back lol.
no, dont. do you understand how rotarys work??? round and round not up and down
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Old Dec 1, 2011 | 10:44 PM
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Originally Posted by jinxed4dub
no, dont. do you understand how rotarys work??? round and round not up and down
but it works for pistons.
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Old Dec 1, 2011 | 10:48 PM
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sig'd
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Old Dec 2, 2011 | 03:28 AM
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From: Dot Island
Originally Posted by SpeedOfLife
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it runs now ty. It was off by 180 somehow. thanks guys. Engine isnt broke thank god
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Old Dec 2, 2011 | 08:07 AM
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From: San Leon
Make sure to follow break in procedure. Here is a good guideline ---->http://www.rotaryresurrection.com/2n...p_breakin.html
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Old Feb 6, 2012 | 02:59 AM
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i thought the two pointers in the cas had to be lined up to the middle of the black pieces?
na turbo s4 and s5 all have different main front pulleys?
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Old Feb 6, 2012 | 01:08 PM
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From: FORT WORTH TEXAS
Originally Posted by shocker003
i thought the two pointers in the cas had to be lined up to the middle of the black pieces?
na turbo s4 and s5 all have different main front pulleys?
Nope. If you'll just pull your CAS out. Then line up the marks on the BOTTOM of the CAS gear/cas body.......then hold that positon and look at the top of the CAS (cover off of course), you'll see that the two "pointers" will be positioned just like the picture BEEFHOLE posted up above several posts ago.

The "pointers" will be seen as cutting across the CORNERS of the two black reluctors inside the CAS, not the center of the reluctors.
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