O2 Sensors on 496HO??
11-28-2005, 10:34 PM
#11
Re: O2 Sensors on 496HO??
Originally Posted by BADKACHINA
Doesn't the stock computer on the 496 have it's own sensor in the exhaust manifolds to make it's own adjustments with air/fuel mixture?
11-28-2005, 10:48 PM
#12
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Re: O2 Sensors on 496HO??
Originally Posted by hillbilly24
No those are temp sensors in the manifolds, not 02.
What are there purpose then? Do they sense a higher temp when running lean and add more fuel? Or do do they do something completely different?
11-28-2005, 11:14 PM
#13
Re: O2 Sensors on 496HO??
Originally Posted by BADKACHINA
What are there purpose then? Do they sense a higher temp when running lean and add more fuel? Or do do they do something completely different?
11-29-2005, 07:50 AM
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Re: O2 Sensors on 496HO??
Originally Posted by axapowell
I have yet to see a fuel/air ratio meter that works well, and then to add the whole water thing. Was just wondering if you had a way to reprogram the ECU and who designed the software,
Good luck with the o2 sensors. Like to hear how you make out.
Dave
Good luck with the o2 sensors. Like to hear how you make out.
Dave
Thanks, but it looks like the O2 sensors on my set up is a non starter. Probablty just as well given the reliability issue you describe.
11-29-2005, 05:23 PM
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Re: O2 Sensors on 496HO??
You may also be able to change to larger fuel injectors at the same fuel pressure to accomodate the increase in airflow. The computer wouldn't know what size the injector actually only sending pulsewidth instructions based upon the program of the computer.
11-30-2005, 12:48 AM
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Re: O2 Sensors on 496HO??
It's easy, remove a riser, drill a hole approx. 1" above flange on the outer side of riser. Use a stainless bung, which you can get from Imco, CMI, etc. with a step in it. Weld the outside, then weld the inside. You will need to repowdercoat or paint the riser. I've done it quite a few times, very easy to do. Always replace gaskets when removing so you ensure no leaks.
Thanks,
Dustin
Thanks,
Dustin
11-30-2005, 08:01 AM
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Re: O2 Sensors on 496HO??
Originally Posted by Whipple Charged
It's easy, remove a riser, drill a hole approx. 1" above flange on the outer side of riser. Use a stainless bung, which you can get from Imco, CMI, etc. with a step in it. Weld the outside, then weld the inside. You will need to repowdercoat or paint the riser. I've done it quite a few times, very easy to do. Always replace gaskets when removing so you ensure no leaks.
Thanks,
Dustin
Thanks,
Dustin
Thanks for the guidance!
So on the stock Mercruiser risers you install a SS bung for the O2 sensor that will pass through the water jacket and is welded on the inside tube and the outside tube located one inch above the flange? Very good!
Any suggestions on what O2 sensor monitouring equipment to purchase/use for this kind of onboard testing that will work but not break the bank?
11-30-2005, 08:03 AM
#20
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Re: O2 Sensors on 496HO??
Dustin,
Which gauge do you use? The ones I've seen just look like a disco light moving up and down.
How do you weld inside the riser(pipe) to assure a good seal. Seems like tight quarters to get it right.
Dave
Which gauge do you use? The ones I've seen just look like a disco light moving up and down.
How do you weld inside the riser(pipe) to assure a good seal. Seems like tight quarters to get it right.
Dave
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