Honda and Acura Model Specific Forums

2point6 · 12-02-2002, 10:07 AM

This is a basic "how to" showing the steps I took to change a internal coil from a f22a to an external coil h22a distributor. What makes this conversion tricky, is that the USDM h22a Distibutor used comes originally set-up for an external coil.

On the right side of this picture is the (internal coil) distributor from the f22. We will take the parts from this and add to the H22a (external coil set up) distributor on the left.

Here is what the internals look like side by side.

Start by removing the coil. Disconnect the wires leading to the coil. There are 2 phillips head screws that hold the coil in place. Transfer the coil to the h22a distributor housing.

Now we will get into the wiring. This step shows to disconnect the green wire from the h22a ignitor.

In this next picture You can see the jumper (yellow wire/coil negitive) That was removed from the f22a distributor and in place on the h22a.

With the coil in place and the negative jumper attached, we will now work on the positive connection. This following picture shows that right next to the green wire (that was disconnected) is the black with yellow stripe. You will cut this wire aproximately half way between the connector and the plastic tubing. From the f22a distributor you will disconnect the same wire and cut in the same place. This should leave you with a "Y" connection with the connector for the ignitor on one end and a ring terminal on the other. The 2 cut ends will be soldered together. Transfer this wire to the H22a distributor. This will be the only (non factory) connection.

Strip the black/yellow stripe wire and solder and heat shrink the ends together.

Back to this picture for a second. The disconnected green wire can be left in place just be sure to tape it up good so it wont get caught on any of the rotating parts. I however cut it off at the tubing and pull the wire out of the distributor all together.

Here is a shot of the connector with the green wire removed. This wire is completely removed all together as an extra precaution.

This is what the completed distributor should look like. Almost completely factory.

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patastinky · 12-02-2002, 11:04 AM

thank you for the post.. because i am gonna be getting a h22a soon... and i am reading up on all the shit i need to do to it ..

Kazmans94cord · 12-02-2002, 11:37 AM

you are my hero scott! i

you man!

2point6 · 12-02-2002, 12:07 PM

Quote:

you are my hero scott! i

you man!

LOL. Just trying my best to impress...I mean help you guys.

RotaryBzzz · 12-02-2002, 12:35 PM

Sweet....Nice Job! I should've paid you to do the photography on my "Fix Your ABS for $1.51" thread.

Nick M · 12-02-2002, 01:40 PM

EuRoBrO · 12-02-2002, 02:30 PM

Good job!

niedejb · 12-02-2002, 02:57 PM

Nice.

Thx again for the pan.

dvp95 · 12-03-2002, 09:44 AM

Can I just ask you why you did this? With my h22a, i had to convert from an internal to an external to run an msd ignition. Whats the advantage of going reverse? Just curious, thanks

2point6 · 12-03-2002, 10:11 AM

In this case it was a USDM h22a being put in a 90 Accord. This was the easiest fix. Distributor question pop up frequently so this was on of the solutions to an unusual conversion. I will be posting how to do the extrernal coil conversion later today if time permits.

The_In_Kid · 12-03-2002, 07:06 PM

gringo7718 · 12-03-2002, 09:53 PM

very nice

KTeller8 · 12-04-2002, 12:15 AM

yeah i had to do something like this on my, cause one was internal and the other was external. then i tried to pull off the plugs from the lx and the ex and they were different than the h22, worst off one had like five wires and a square plug and the other was three wires and round plug but all the harnesses were different. i still get a headache thinking of what we did. .. hhehehe i used parts from a B18 coil and stuff to finally get it working

Stew Pidasso · 12-06-2002, 04:50 AM

ttt

93R33Lude · 01-31-2004, 08:06 AM

Hi, I have a 93 prelude 2 f22 and dropping a H22aJDM using f22 harness. The f22a has an external coil while H22AJDM has internal. Just the opposite of the post. What do you recommend I do with the extra coil connector.

-mc-

lude_lover · 08-09-2007, 02:45 PM

bump, im going thru the same thing

nix94delsol · 03-29-2009, 05:18 PM

see that? thats a D16Z6 internal distributor coil. (yes i know the positive wire is missing, so i made my own.)

aaaand thats a USDM H22a1 distributor with the external coil

Y'd off the black and yellow to the positive wire (soldered, headshrinked, and E-taped)

yanked the green wire out completly, from the plug too.

hooked the yellow and black Y'd wire back up

hooked the yellow and black wire up to the internal coil (positive)

then i hooked the wire that was already on the internal coil (yellow with a blue stripe) up to the only tab left open on the ignitor.

i ordered a distributor cap for a 1991 Accord DX. its got an internal coil so itll work

12-02-2002, 11:37 AM	#3
Kazmans94cord Member Join Date: Sep 2001 Location: Kingwood, TX, USA Posts: 2,517	Re: how to convert external coil to internal (2point6) you are my hero scott! i you man!

12-02-2002, 12:35 PM	#5
RotaryBzzz Junior Member Join Date: Jul 2002 Location: Los Angeles, CA, USA Posts: 730	Re: how to convert external coil to internal (2point6) Sweet....Nice Job! I should've paid you to do the photography on my "Fix Your ABS for $1.51" thread. __________________ 1995 BMW m3/2/5 2001 BMW 330i zsp/4/5

12-02-2002, 01:40 PM	#6
Nick M Member Join Date: Jan 2001 Location: New York Posts: 9,764	Re: how to convert external coil to internal (RotaryBzzz)

12-02-2002, 02:30 PM	#7
EuRoBrO Join Date: Oct 2002 Location: Palm Bay, Florida, USA Posts: 532	Re: how to convert external coil to internal (2point6) Good job!

12-02-2002, 02:57 PM	#8
niedejb Join Date: Feb 2002 Location: Peoria, IL, USA Posts: 1,835	Re: how to convert external coil to internal (EuRoBrO) Nice. Thx again for the pan. __________________ 97 2.2 CL F22B1 253 hp/264 ftlbs One cam...not two http://home.insightbb.com/~niedejb

12-03-2002, 09:44 AM	#9
dvp95 Junior Member Join Date: May 2002 Posts: 983	Re: how to convert external coil to internal (niedejb) Can I just ask you why you did this? With my h22a, i had to convert from an internal to an external to run an msd ignition. Whats the advantage of going reverse? Just curious, thanks

12-03-2002, 10:11 AM	#10
2point6 Member Join Date: Nov 2001 Location: Tucson, AZ, USA Posts: 3,218	Re: how to convert external coil to internal (dvp95) In this case it was a USDM h22a being put in a 90 Accord. This was the easiest fix. Distributor question pop up frequently so this was on of the solutions to an unusual conversion. I will be posting how to do the extrernal coil conversion later today if time permits. __________________ http://www.collectiveracingonline.com (520) 296-2223 1st K24 Powered 1990 Accord 303.5 WHP 214.64 WTQ ALL MOTOR H22 Powered EG

12-03-2002, 07:06 PM	#11
The_In_Kid Member Join Date: Apr 2002 Location: Suburbs, Ont, Canada Posts: 1,659	Re: how to convert external coil to internal (2point6) __________________ I Modify My Car One Grain At a Time... "Have you ever noticed? Anybody going slower than you is an idiot, and anyone going faster than you is a maniac." -George Carlin

12-03-2002, 09:53 PM	#12
gringo7718 Junior Member 1991 Honda CRX Join Date: Feb 2002 Location: north cuba MIAMI Posts: 826	Re: how to convert external coil to internal (The_In_Kid) very nice __________________ 91 CRX B16 J1 trans. Intake, JDM Greddy exhaust, HF front bumper support, 13lb. battery, no A/C. Tein S-tech/Tokico illuminas. 15x7 Slips Hankook RS-2

12-04-2002, 12:15 AM	#13
KTeller8 Member Join Date: Dec 2001 Location: Kteller, USA Posts: 7,901	Re: how to convert external coil to internal (gringo7718) yeah i had to do something like this on my, cause one was internal and the other was external. then i tried to pull off the plugs from the lx and the ex and they were different than the h22, worst off one had like five wires and a square plug and the other was three wires and round plug but all the harnesses were different. i still get a headache thinking of what we did. .. hhehehe i used parts from a B18 coil and stuff to finally get it working __________________ KTeller.com 850-791-6459

12-06-2002, 04:50 AM	#14
Stew Pidasso Member 2009 Honda Accord Join Date: Mar 2002 Location: Im just a Stew Pidasso, OH, USA Posts: 2,827	Re: how to convert external coil to internal (KTeller8) ttt __________________ 2009 Accord EXL V6 Sedan 1999 Accord EXL V6 Coupe Want to buy a Honda in NE Ohio, some see me at Waikemhonda.com

01-31-2004, 08:06 AM	#15
93R33Lude Join Date: Jan 2004 Location: Crestview, FL, USA Posts: 11	Re: how to convert external coil to internal (2point6) Hi, I have a 93 prelude 2 f22 and dropping a H22aJDM using f22 harness. The f22a has an external coil while H22AJDM has internal. Just the opposite of the post. What do you recommend I do with the extra coil connector. -mc-

08-09-2007, 02:45 PM	#16
lude_lover Junior Member Join Date: Mar 2007 Location: Fort Worth, Texas, usa Posts: 48	Re: how to convert external coil to internal (93R33Lude) bump, im going thru the same thing

03-29-2009, 05:18 PM	#17
nix94delsol Member Join Date: Apr 2007 Location: Being A Stallion in, Maine, USA Posts: 3,108	Using a D16z6 coil see that? thats a D16Z6 internal distributor coil. (yes i know the positive wire is missing, so i made my own.) aaaand thats a USDM H22a1 distributor with the external coil Y'd off the black and yellow to the positive wire (soldered, headshrinked, and E-taped) yanked the green wire out completly, from the plug too. hooked the yellow and black Y'd wire back up hooked the yellow and black wire up to the internal coil (positive) then i hooked the wire that was already on the internal coil (yellow with a blue stripe) up to the only tab left open on the ignitor. i ordered a distributor cap for a 1991 Accord DX. its got an internal coil so itll work __________________ DSOC Numero 74 Soooold out Last edited by nix94delsol; 04-03-2009 at 01:06 PM.

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