Air Injection Tube Blockoff Plate Kit
- Thread starter 4Roller
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I need to know more as well... My thinking is,,, I thought I read somewhere the EGR lowers the combustion temps...
Well... Does doing this mean more heat?
If so, there would have to be some power benefits before I'd do it... B/c blocking off something that supposedly makes cooler temps just isn't going to cut it... Not to mention you're that much further away from passing emissions, if you ever have to.
"In a gasoline engine, this inert exhaust displaces the amount of combustible matter in the cylinder. This means the heat of combustion is less, and the combustion generates the same pressure against the piston at a lower temperature."
Exhaust gas recirculation - Wikipedia, the free encyclopedia
Or do ppl do it just to get rid of a system and possible fail point?
Well... Does doing this mean more heat?
If so, there would have to be some power benefits before I'd do it... B/c blocking off something that supposedly makes cooler temps just isn't going to cut it... Not to mention you're that much further away from passing emissions, if you ever have to.
"In a gasoline engine, this inert exhaust displaces the amount of combustible matter in the cylinder. This means the heat of combustion is less, and the combustion generates the same pressure against the piston at a lower temperature."
Exhaust gas recirculation - Wikipedia, the free encyclopedia
Or do ppl do it just to get rid of a system and possible fail point?
From my understanding;
There will be no performance gain. The kit is only to eliminate smog. This will cause the engine temperature to run higher.
In my opinion, if you have the ability to understand and follow the original smog diagrams, your engine will not only run better, it will last longer. Toyota designed the engine with the idea of longevity, and most engines that regularly see 200k+ without trouble have been unmolested and left alone.
There will be no performance gain. The kit is only to eliminate smog. This will cause the engine temperature to run higher.
In my opinion, if you have the ability to understand and follow the original smog diagrams, your engine will not only run better, it will last longer. Toyota designed the engine with the idea of longevity, and most engines that regularly see 200k+ without trouble have been unmolested and left alone.
LC doesnt even have a discription for the parts...
I'm not interested...
Another thing that bothers me is, what about the spaces behind the plates?
Are they just going to sit there? Can they contract and expand with different air pressures? Can those pressures escape? Can it lead to cracking in parts of the head?
There are air pockets blocked off that were made to flow... There are water chambers that are designed to flow... So block off the EGR and let those open spaces just sit there blocked?
This whole thing just does not add up to me...
I'm not interested...Another thing that bothers me is, what about the spaces behind the plates?
Are they just going to sit there? Can they contract and expand with different air pressures? Can those pressures escape? Can it lead to cracking in parts of the head?
There are air pockets blocked off that were made to flow... There are water chambers that are designed to flow... So block off the EGR and let those open spaces just sit there blocked?
This whole thing just does not add up to me...
I run ultra cool.............
I have mine blocked
I have mine blocked
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No issues here
The air injector comes from the exhaust manifold, around the back side of the block and around to the AFM. I believe started with trucks in 1988 and later. Looking at FSMs for 87 and earlier mention nothing of the air injector and the difference in exhaust manifolds. The 87 and earlier seem to have a 'thicker' or wider body than the 1988 and later. The later version is narrow enough to allow the air tube to be placed over the manifold(bolts up to where the block off plates go. My understanding the purpose of it was to take heated air and move it into the AFM to allow the engine to warm up to operating temps quick to reduce fuel comsumption and better emissions.
Mine wraps around the engine block and just vents into the engine bay since I have a '93 engine and an 85 afm
Mine wraps around the engine block and just vents into the engine bay since I have a '93 engine and an 85 afm
my 84 had it.............anybody need tubes?
