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RX-7 2nd Gen Specific (1986-92) RX-7 1986-92 Discussion including performance modifications and technical support sections.


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Old 09-14-2008, 01:42 AM   #1
Apex944
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Default NO Timing marks at all

So, I have set the timing per the FSM.
Set to yellow leading mark which is -5 degree's, set the CAS gear to the dot, pull the cover off the CAS to make sure it does not rotate, start the car.

Well, when I start the car with it setup like this the car will NOT run.
I have to cut off fuel, pump the throttle a few times, it starts firing and I turn the fuel back on and it runs like shit. I try to rev and it doesnt do anything until I let off and then it revs up a little.

So I started going through each tooth on the CAS until I found one that worked.
It happened to be about the 3rd tooth before the correct one when looking at the top of the CAS.

So, when it's setup 3 teeth or so from the one it's supposed to be on it fires up on first try. Runs excellent, revs beautifully, no issues other than my timing marks are out of sight completely no matter how far I turn the CAS. I even grinded out the slot on the CAS to allow it to retard farther and it still will not line up.

The marks are on the far left side of the pulley when looking from the front of the engine.

I tried moving the CAS 1-2 teeth in both directions and it just makes it run like complete shit.

I have changed pullies to make sure it wasnt the pulley and there wasnt any difference.

I could have put the drive gear on backwards, but I don't think it would be so far off that I couldnt reach it with the grinded out CAS slot method.

I retarded the CAS as far as it would go until it hit my block and the marks were still far off.

Here's a few pic's of my CAS setup....






I checked my timing with a snap-on timing light earlier tonight and according to it, I am 120 degree's advanced from -5 leading timing yet the car runs fine.....

Any idea's?



It run's great and makes great power, just the timing scares me a little.


I will be at 7 stock on the 26th with my car if anybody wants to take a look at it and help me out


Thanks for any help






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Old 09-14-2008, 05:46 PM   #2
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Default

Wow, no help?

Well, I figured it out from some idea's from "the other forum".

I tried the TDC via the apex seal in the spark plug hole and I was somewhat close timing wise but still far off.

I then took the hub off of my spare S4 T2 engine and put it on....
I had the clutch pedal held down with an extension rod, the kind that telescopes and locks in place and you have to pull the tab to release it, while I pulled the front bolt of course.

Timing is PERFECT now.

The car idle's, cruises, drives, pulls, and decel's way better than ever now.

Wish I had thought about the pulley hub earlier.

Basically MAKE SURE YOUR PULLEY/ HUB COMBINATION ARE FROM THE ENGINE TYPE YOU ARE USING
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Old 09-15-2008, 02:51 AM   #3
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Default

I answered your thread in the other forum. :P


-Ted
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Old 09-15-2008, 03:44 AM   #4
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Quote:
Originally Posted by RETed View Post
I answered your thread in the other forum. :P


-Ted
Haha, thanks again REted
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Old 10-02-2008, 09:28 AM   #5
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Default

can i get a link to that other thread i just got done rebuilding my T2 and i will need to know the answer to this aswell
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