B20a headers! Headers! For the b20a!!

[OldSchool86]

GUESS WHAT?! I have found a better header than the H22 header.
!!YES THATS RIGHT FOLKS!!
Although it involves the same mods to the bolt holes as the H22, on this header the ports match perfectly to the head and also it comes from an engine with the same forward lean as the B20A. Unlike the h22. Thus you do not have to chop up the tubes to make it fit around the oil pan and meet the cat.(NOTE: this does not mean that it will just bolt up to the cat) You will however have to wedge it over the dip stick tube, unless you can pull your tube out. mine is stuck in. The down pipe also has the same twist in it to conform to the oil pan.
Give up........

[frantik]

are u gonna say what it is?

[Tomisimo]

what he said ^^ sounds interesting

[2oodoor]

OK, I chopped up a brand new A5 and made mine.... would rather had and H22 for the fatter tubes though

[OldSchool86]

OK are you guys ready!!!!!!!!!!!!!!.... ITS NOT EVEN FROM A HONDA.
Ok a little back story first. I work for a Performance car parts store, so i have lots of parts around all the time. so i just went through every header from ever "Make" of 4 banger that there was and to my surprise.

ITS FROM

A

1989

THROUGH

1993

>>>>>>"MITSU*FUCKING*BISHI" ECLIPSE!!!! NON-TURBO FITS!!!

WHO WOULD OF THOUGHT!

[2ndGenGuy]

I think someone was saying you could use the turbo manifolds from those and bolt them onto a B20A ... hmmm...

[OldSchool86]

Not the 4g63 mani. but yeah the DSM turbo mani would work to.

[2oodoor]

excellant research!!!!

[OldSchool86]

yeah i went through allot of headers.

[2oodoor]

I cut the DP on a prelude B20a5 header for my Accord and it fits great now but it has such a 90 angle right there below the header now I think it is getting a lot of turbulance at some rpm with noticable negative effects. This is good news here!

['A20A3']

wow. fail. nice thought tho.

i have heard of peeps using the turbo manifold from those things on the F series accord motors...

[MessyHonda]

something new...nice....do they make aftermarket headers for those engines?...not worth swaping something if its just stock

[OldSchool86]

yeah. lol. aftermarket headers are what i fitted on my b20a


something new...nice....do they make aftermarket headers for those engines?...not worth swaping something if its just stock

[2ndGenGuy]

There's one on eBay right now for $50 shipped. Very tempting.

[A18A]

lol it would be funny to run a blacktop 4age intake & mitsubishi headers haha

[OldSchool86]

the b20 is turning out to be one hell of a mut.

by the way. i dont know if any of yall have seen the post in the sell section but im selling my b20 with all the extras(including the trans and all the stock stuff as well) for $500.00 or i'll will include the trust washers, b20a5 rods and b16 pistons for an extra $320.00 this is the receipt of cost for what i have bought everything for. http://www.3geez.com/forum/showthread.php?t=69507



lol it would be funny to run a blacktop 4age intake & mitsubishi headers haha

[MessyHonda]

what gasket kit did you go with...most of the stuff doesnt sound bad.... willing to part anything out?

[AccordB20A]

what is the engine code/engine/head/details on this

[OldSchool86]

Its is the complete JDM B20A gasket kit. from AJUSA. i dont realy want to part it out. this is a realy good price. i paid 112.50 for the motor and trans. the rest of the cost is in parts, witch are all brand new with no miles on them with receipts.


what gasket kit did you go with...most of the stuff doesnt sound bad.... willing to part anything out?

[OldSchool86]

B20A / 1051376 from an 85-87 accord chassis with approx 40,000 miles on it. it had a bent rod but block is great but needs to be honed.(typical for a rebuild) the head has been rebuilt. all questionable valves were replaced(to intakes valves to be exact.) all valves were lapped, oil galies cleaned, valve guides were in great condition, head was tested for valve leaks(Dixie Performance) and past with flying colors., head is straight,(Dixie Performance), Weapon R B-Series cam gears,B20A5 Lower Crank gear, Top-line H22 timing belt(you will need the b20a5 water pump),NGK plug wires, NGK iridium plugs, ARP head stud kit, Top-line rod/main bearings, AJUSA JDM B20A complete gasket kit, Top-line B20A5 rods, Top-line B16A Pistons(USDM). I have all receipts. this deal also comes with the Auto trans and all of the stock parts that came with the engine.



what is the engine code/engine/head/details on this

[A18A]

i think he means what mitsubishi engine lol

[OldSchool86]

90-94 Eclipse DOHC 2.0L non turbo
http://www.nopi.com/dsp_part_detail.php?vnopinum=251+2866

[b20a86lude]

wow is this for sure

[OldSchool86]

yep.

[2ndGenGuy]

Pics!!!

[2oodoor]

I cut the DP on a prelude B20a5 header for my Accord and it fits great now but it has such a 90 angle right there below the header now I think it is getting a lot of turbulance at some rpm with noticable negative effects. This is good news here!

again...

[2ndGenGuy]

again...

I would do the same thing, if I could weld good enough to modify a header. :)

[AccordB20A]

finding a b20a5 headers like the same as finding a b20a header over here so it doesnt help me

i wonder what the NZ/JDm engine thats the same as your USDM 90-94 Eclipse DOHC 2.0L non turbo

[Ichiban]

I would do the same thing, if I could weld good enough to modify a header. :)

I can.

[2ndGenGuy]

I'll be sending you a B20A5 header in the near future then. :)

[nswst8]

The great thing about welding is if you muck it up, its fixable. Just keep welding it gets alot easier.

[Ichiban]

I'll be sending you a B20A5 header in the near future then. :)

I've actually really been thinking about this mitsu header thing.

[MessyHonda]

I'll be sending you a B20A5 header in the near future then. :)

you dont need headers...i got a turbo mani for you...haha

[2ndGenGuy]

you dont need headers...i got a turbo mani for you...haha

How much for the Turbo Mani?

[MessyHonda]

http://img.photobucket.com/albums/v650/Messybone/LX-i/PIC-0118.jpg

[AccordB20A]

How much for the Turbo Mani?
free


awesome ill take it

[Ichiban]

Can someone sift through the shit and sticky the important part of this thread, namely;


OK are you guys ready!!!!!!!!!!!!!!.... ITS NOT EVEN FROM A HONDA.
Ok a little back story first. I work for a Performance car parts store, so i have lots of parts around all the time. so i just went through every header from ever "Make" of 4 banger that there was and to my surprise.

ITS FROM

A

1989

THROUGH

1993

>>>>>>"MITSU*FUCKING*BISHI" ECLIPSE!!!! NON-TURBO FITS!!!

WHO WOULD OF THOUGHT!

[bullard123]

bumpity....any pics of this yet?

[2oodoor]

Im curious if anybody has been successfull at this Mistubishi header thing as well. Please post results if so, thanks

[AccordB20A]

bringing this back out of the dead. anyone tried it?!?!?1

[Nafs Asdf]

I checked ebay for these, and you can get one for like $30 usd. If I wouldn't have to pay another $100-200 for shipping I'd pick one up just for the hell of it to see if it fits.

Someone in the US with a B20A should really get one and try it out.

[A18A]

This is a fail post & I have clearly got things mixed up

[zedries]

Soooo.. i'm going to bump this to see if anyone has done this with any results? In particular all you folks in North America - we don't have the eclipse in Ozzie land and it will cost a bundle to ship here for me so i'm looking for a little guidance.

Zaahir

[AccordB20A]

anyone done this yet?!?!?!?!?!

[rjudgey]

B20A5 fits pretty much near on some holes need a gentle amount of filing and the downpipes need rewelding at correct angle but certainly cheaper than having one made from scratch!!

[Doward]

So I could buy this: http://www.ebay.com/itm/NEW-GSP-MITSUBISHI-ECLIPSE-1G-2G-4G63-CAST-IRON-TURBO-MANIFOLD-T3-FLANGE-T3T4-/271047360175?pt=Motors_Car_Truck_Parts_Accessories&hash=item3f1bae7eaf&vxp=mtr

And with some slight filing have a turbo cast manifold that would fit my B20A?

[obdriver6]

^ Probably, you wanna be the guinea pig that tests it out?

[Doward]

I'll order a 4g63 gasket and compare it to the B20A head first.

[Hauntd ca3]

B20A5 fits pretty much near on some holes need a gentle amount of filing and the downpipes need rewelding at correct angle but certainly cheaper than having one made from scratch!!

is the a5 the lean back poolude b20a?
if so, the ones i have didnt need any modding to the primaries, just minor reworking of the down pipe where it goes under the front of the sump. http://www.rage.co.nz/New%20Site/web-content/header%20headngs%20images/honda.pdf

[Doward]

Bad news, the ports do NOT match up.

The 4G63 port holes, while the same shape, are SIGNIFICANTLY larger than the B20A head I just brought into Advance Auto Parts. Lining up the right bolt hole put the left bolt hole a solid 1"+ outside of the stud.

Has anyone tried a normal B21A exhaust manifold gasket to the B20? Looks like if you flip it upside down, it might work.

[247shuer247]

we need to get some one to just make some bad ass wide and loud headers lol

[Doward]

Nah, I'm just going to cast a turbo manifold.

Although I suppose once I have the master and core built, I could cast out as many as were wanted.

[rjudgey]

B20A5 header much easier OBX one works quite nicely just need to make up new downpipe to the upper part or have the old one cut and rewelded to new angle, you do have to trim a bit of the cross member that runs front to back but may fit ok on 3rd gen this was on a 2G B20A lude. Works nice though has a 2.25" mandrel bent system fitted should see some nice figures from this engine once it's running Benny having some teething issues this week! lol!

[2oodoor]

read this starting at post #76 pictures too! (http://www.3geez.com/forum/showthread.php?t=65644")

[Doward]

Not a lot of information there.

I'm going to order a B20A5 exhaust manifold gasket to compare to the B20A JDM head. Also compare it to an H22.

Really wish I had some mechanical drawings of these things :(

[2oodoor]

Oh really! Wow, I just read thru it to at least 30 posts past 76 it covers every thing I did to make the Prelude header work. Oh well sorry that was no help to you.

[Doward]

No, no, don't get me wrong - GREAT info on specifically putting a B20A5 Prelude header onto a JDM B20 Accord engine!

Not much information as far as port sizing, bolt hole sizing / differences, etc.

[Ichiban]

Not a lot of information there.

I'm going to order a B20A5 exhaust manifold gasket to compare to the B20A JDM head. Also compare it to an H22.

Really wish I had some mechanical drawings of these things :(

I've got a B20A5 exhaust gasket inbetween my B20A head and factory exhaust manifold, if that helps. Did slightly modify the outside holes on the gasket, the 2 downpipe gaskets were a bitch, had to use some ford ones and grind the OD smaller...

[Doward]

Do you happen to have any photos of how the ports lined up?

[2oodoor]

No, they were pretty much right on it like the oem manifold was. I did have to clean up the header ports only because I was anal about welds in the port (brand issue) you can see where I rat tail file the end hole in one pic. Really wasn't much.

[2oodoor]

I recommend fabricating, basicly just extending the downpipe support bracket that bolts to the dp and up at the rear engine block. I havn't done mine yet but it needs one. Exhaust shop can do that part easy so i have my bracket cut in two so I can take it next time around.

[rjudgey]

fitting the upper manifold part is pretty easy the ports line up it's just a minor bit of filing the two most outer stud holes to get it to slide onto the head exhaust studs. The gasket is pretty much the same too. The tricky part is re welding the downpipe and possibly cutting away a tiny bit of the centre support frame to clear the flexi pipe. Depends on how straight you want to keep the downpipe going through the middle of the car. This was OBX header the upper part was inline with the block so made it pretty easy to get it to clear the front cross member on the 2g lude then the flange and downpipe were cut and rewelded to the correct angle to suit.

[AccordB20A]

my header looks to be custom made for the b20a. looks ugly on the outsie but i can see the joins on the inside and they are tidy with no ugly welds in there :)!

http://i687.photobucket.com/albums/vv240/accordb20a/P9020023.jpg

but the motor was in a EF civic so i have no idea how well the bottom will line up to the exhaust (will depend on how the motor sat in the car)