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Assistance Needed:B16A Turbocharged CRX w/ inconsistent rpm under positive pressure.

Assistance Needed:B16A Turbocharged CRX w/ inconsistent rpm under positive pressure.

 
Old 05-16-2019, 03:16 PM
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Default Re: Assistance Needed:B16A Turbocharged CRX w/ inconsistent rpm under positive pressu

Crank looks half a tooth off.
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Old 05-16-2019, 03:28 PM
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Default Re: Assistance Needed:B16A Turbocharged CRX w/ inconsistent rpm under positive pressu

In that case the timing probably isn't the issue. I just had a hard time lining up with the gear instead of the pulley. When I use the timing marks on the pulley it's 100 percent set right and I can't really imagine why the pulley would be different from the crank gear. Wish it was that simple but seems like it's in time unless anyone else thinks it looks off? I'm getting the new harness Saturday and I plan on spending the day installing it. Gonna go through the harness and make sure everything looks good, make some slight modifications, and install and see if that helps. That's my last hope
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Old 05-16-2019, 04:28 PM
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Default Re: Assistance Needed:B16A Turbocharged CRX w/ inconsistent rpm under positive pressu

Originally Posted by MastaFlyMason View Post
In that case the timing probably isn't the issue. I just had a hard time lining up with the gear instead of the pulley. When I use the timing marks on the pulley it's 100 percent set right and I can't really imagine why the pulley would be different from the crank gear. Wish it was that simple but seems like it's in time unless anyone else thinks it looks off? I'm getting the new harness Saturday and I plan on spending the day installing it. Gonna go through the harness and make sure everything looks good, make some slight modifications, and install and see if that helps. That's my last hope
The cams are definitely off. The crank looks off here as well. **shrug** could be wrong.
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Old 05-16-2019, 05:14 PM
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Default Re: Assistance Needed:B16A Turbocharged CRX w/ inconsistent rpm under positive pressu

Check the first pics, they're dead on with the pulley installed. I think I'm just not lining up the gear correctly without the pulley. Unless for some reason my pulley TDC mark would be off
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Old 05-16-2019, 05:30 PM
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Default Re: Assistance Needed:B16A Turbocharged CRX w/ inconsistent rpm under positive pressu

I read another thread with a similar issue, was told the crank pulley has rubber that can fail and move the lines for TDC so I'm going to try a different pulley tomorrow
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Old 05-16-2019, 07:38 PM
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Default Re: Assistance Needed:B16A Turbocharged CRX w/ inconsistent rpm under positive pressu

Originally Posted by MastaFlyMason View Post
I read another thread with a similar issue, was told the crank pulley has rubber that can fail and move the lines for TDC so I'm going to try a different pulley tomorrow
If the pulley has the rubber ring, this would make it a harmonic balancer. I dont know how the absence of or failure of the rubber would cause the tdc line to shift.
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Old 05-16-2019, 09:50 PM
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Default Re: Assistance Needed:B16A Turbocharged CRX w/ inconsistent rpm under positive pressu

Originally Posted by Txdragon View Post
If the pulley has the rubber ring, this would make it a harmonic balancer. I dont know how the absence of or failure of the rubber would cause the tdc line to shift.
The outer ring of the factory crank pulley separates from the inner ring and the rubber spins/shifts on itself, thus changing the indexed timing marks. Usually the outer ring simply separates and comes off... not staying "assembled" for long.
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Old 05-17-2019, 04:29 AM
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Default Re: Assistance Needed:B16A Turbocharged CRX w/ inconsistent rpm under positive pressu

Originally Posted by MastaFlyMason View Post
In that case the timing probably isn't the issue. I just had a hard time lining up with the gear instead of the pulley. When I use the timing marks on the pulley it's 100 percent set right and I can't really imagine why the pulley would be different from the crank gear. Wish it was that simple but seems like it's in time unless anyone else thinks it looks off? I'm getting the new harness Saturday and I plan on spending the day installing it. Gonna go through the harness and make sure everything looks good, make some slight modifications, and install and see if that helps. That's my last hope
I feel like this is backward thinking. Don't rely on where the pulley lands, the crank gear is the important part, timing is off based on the pictures.
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Old 05-17-2019, 08:48 PM
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Default Re: Assistance Needed:B16A Turbocharged CRX w/ inconsistent rpm under positive pressu

I took another approach and now know my timing is correct. I was having a hard time eyeballing TDC with the crank gear but when I set the cam gears to align it looked dead on at the crank gear
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Old 05-31-2019, 08:43 PM
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Default Re: Assistance Needed:B16A Turbocharged CRX w/ inconsistent rpm under positive pressu

Figured I'd update the post. Been driving the car with vtec disabled and it pulls hard. I ordered a custom engine harness that I'm waiting for as well as a new valve cover and a Burton Racing COP setup. Will be wired straight from the ECU to the coils and the engine harness will be fresh. Hoping that will fix it otherwise I'm at a loss. Will update with results.
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Old 06-14-2019, 05:46 PM
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Default Re: Assistance Needed:B16A Turbocharged CRX w/ inconsistent rpm under positive pressu

Got an update. I installed a new valve cover that isn't warped, no more oil seepage into the plug well. I installed the Burton Racing COP kit with the K20 coils provided. I shipped out the Hondata and got a new battery installed as it was sometimes having issues freezing while datalogging. I also bought a Monotech engine harness and got it installed. After all that, same issues. I did however notice a couple things. I just went on a drive and it pulled strong until around 5500RPM, then it cut out, then came back and pulled thru to redline. I noticed when I'm breaking up my Escort Passport radar detector is telling me there is a laser signal. I've read this could be caused by low voltage or interference. Has never had this issue before. I checked the voltage in the past with my turbo timer, looked like it was steady at 14v under load but not sure how fast the turbo timer updated (it's an HKS). I figured any interference would be solved by the new engine harness but maybe not. I did use an amplifier wiring kit 0 gauge for the battery relocation, could that cause problems? Let me know if anyone has any ideas.
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