an 83 22r header on a 86 22r
12-08-2010, 01:01 PM
#1
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an 83 22r header on a 86 22r
Since my truck has been totaled and i've been looking for parts i found a guy locally selling a header for an 83 22r and i was wondering if it would work on my 86 22r and what the differences are? also its a manual and mine is an auto i know that these don't work but i am willing to do a little work to get it to fit
thanks!!!!
thanks!!!!
12-08-2010, 01:52 PM
#6
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Wont work. But if you have the time, you can just make a new flange out of some 1/4inch steel and weld it onto the existing header tubes.
All youd need is a gasket, a die grinder, and some time.
All youd need is a gasket, a die grinder, and some time.
12-08-2010, 02:04 PM
#7
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12-09-2010, 04:32 PM
#8
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12-09-2010, 04:39 PM
#10
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12-09-2010, 04:47 PM
#12
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And i can go bolt on some headers onto my V8 car and notice no noticeable gains because the header ports don't match the exhaust ports.
Why do you think people buy headers?
Because they make your engine flow better.
Well, the stock manifold has (you guessed it) pear shaped ports. Why do you think this is true? Well, if they were circular, then you'd see a big fat bottleneck of exhaust gases..
Sort of like dropping your exhaust tubing down to 1".
Why do you think people buy headers?
Because they make your engine flow better.
Well, the stock manifold has (you guessed it) pear shaped ports. Why do you think this is true? Well, if they were circular, then you'd see a big fat bottleneck of exhaust gases..
Sort of like dropping your exhaust tubing down to 1".
12-09-2010, 05:06 PM
#13
And i can go bolt on some headers onto my V8 car and notice no noticeable gains because the header ports don't match the exhaust ports.
Why do you think people buy headers?
Because they make your engine flow better.
Well, the stock manifold has (you guessed it) pear shaped ports. Why do you think this is true? Well, if they were circular, then you'd see a big fat bottleneck of exhaust gases..
Sort of like dropping your exhaust tubing down to 1".
Why do you think people buy headers?
Because they make your engine flow better.
Well, the stock manifold has (you guessed it) pear shaped ports. Why do you think this is true? Well, if they were circular, then you'd see a big fat bottleneck of exhaust gases..
Sort of like dropping your exhaust tubing down to 1".
12-09-2010, 05:12 PM
#14
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peow noone makes a specific pear shaped exhaust ports on their headers. noone.
The manufactures use extra holes in the header flange that allows for the post 85 pair tubes to bolt up and accept the pair system though the pear shape.
all the pear shape is for is the pair tubes. the pre 86's had a different way the pair system works though the head which resulted in round holes.
so in short Pear = P.A.I.R.
now if your willing to delete your pair system then any 20/22r header will fit the 20/22r heads. 79-95. Otherwise you have to use year specific headers. Or drill your own P.A.I.R. Tube holes.
Easy way to test this theory is to look at the NWOR site.
http://www.northwestoffroad.com/parts/20-22header.html
1979-95 Header System non-emission version N31001
1979-83 Header System (Type A)* with smog equipment fittings, O2 sensor and hot air pick-up N31002
1984-85 Header System (Type B)* with smog equipment fittings, O2 sensor and hot air pick-up N31003
1984-85 Header System (EFI) with O2 sensor only N31004
1986-87 Header System (Type B)* with smog equipment fittings, O2 sensor and hot air pick-up N31005
1986-87 Header System (EFI) with O2 sensor only N31006
1988-95 Header System (EFI)* (Type B)* with smog equipment fittings, O2 sensor and hot air pick-up N31010
What do they mean by smog (emissions) equipment fittings ? P.A.I.R. Tubes.
The manufactures use extra holes in the header flange that allows for the post 85 pair tubes to bolt up and accept the pair system though the pear shape.
all the pear shape is for is the pair tubes. the pre 86's had a different way the pair system works though the head which resulted in round holes.
so in short Pear = P.A.I.R.
now if your willing to delete your pair system then any 20/22r header will fit the 20/22r heads. 79-95. Otherwise you have to use year specific headers. Or drill your own P.A.I.R. Tube holes.
Easy way to test this theory is to look at the NWOR site.
http://www.northwestoffroad.com/parts/20-22header.html
1979-95 Header System non-emission version N31001
1979-83 Header System (Type A)* with smog equipment fittings, O2 sensor and hot air pick-up N31002
1984-85 Header System (Type B)* with smog equipment fittings, O2 sensor and hot air pick-up N31003
1984-85 Header System (EFI) with O2 sensor only N31004
1986-87 Header System (Type B)* with smog equipment fittings, O2 sensor and hot air pick-up N31005
1986-87 Header System (EFI) with O2 sensor only N31006
1988-95 Header System (EFI)* (Type B)* with smog equipment fittings, O2 sensor and hot air pick-up N31010
What do they mean by smog (emissions) equipment fittings ? P.A.I.R. Tubes.
oh and you can also tell LCE that their PAIR block off plates bottle neck the exhaust system too.
Last edited by xxxtreme22r; 12-09-2010 at 05:15 PM.
12-09-2010, 05:48 PM
#15
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so i read another thread that just popped up about a 22r header on a 22re and the header has the round ports but the heads have the pear shaped ones.. but this is only for the pair system that is used for emissions stuff? so i could but the block off plates from lc and run this header? i'm just curious if it will still bolt up? and if so where do i get the good gasket
12-09-2010, 05:52 PM
#16
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it will bolt up, use the block off plate kit from LCE to delete the PAIR system piping (not sure what else to do to delete it at the moment.) Use a header gasket meant for a 20R. That's how LCE sells their headers. It's the same header 81-95 they just supply a different header gasket.
For those who don't believe me read the LCE site. Make note what it says the kit includes.
Remember though it has to be the 4wd and not a 2wd header. The tubes are different between the two.
For those who don't believe me read the LCE site. Make note what it says the kit includes.
Remember though it has to be the 4wd and not a 2wd header. The tubes are different between the two.
12-09-2010, 10:08 PM
#19
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I have an old Downey header for a 22R that I was going to put on my 4runner. I'm no expert, but it looked to line up to the '86 motor that was in there, but one of the primaries would not clear the UCA. So you might have to worry about that....
12-09-2010, 10:21 PM
#20
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yes it will bolt up fine.
and guys, we're talking about a 4cyl with ~100HP...................even if the round header ports did create weird flow with the pear shaped exhaust ports....we're talking a VERY EXTREMELY SMALL amount of power loss...not even 1HP.....
it'd be different if it was pure race motor, matching ports helps there, but for a 22R.....nah it won't hurt enough to even notice on a Dyno i bet.
and guys, we're talking about a 4cyl with ~100HP...................even if the round header ports did create weird flow with the pear shaped exhaust ports....we're talking a VERY EXTREMELY SMALL amount of power loss...not even 1HP.....
it'd be different if it was pure race motor, matching ports helps there, but for a 22R.....nah it won't hurt enough to even notice on a Dyno i bet.
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