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4.3 V6 Distributor parts interchange? by Red87FieroGT
Started on: 08-16-2012 06:16 AM
Replies: 15 (1692 views)
Last post by: Inferno on 08-22-2013 07:42 PM
Red87FieroGT
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Report this Post08-16-2012 06:16 AM Click Here to See the Profile for Red87FieroGTSend a Private Message to Red87FieroGTEdit/Delete MessageReply w/QuoteDirect Link to This Post
So i was at school and i found this distributor that looked exactly like a factory 2.8 distributor. I asked if i could have it and the teacher said yes because they dont even teach about them anymore. He also told me that it was never ran in a car. they only had it for demonstrations. When i got it home i searched the part number and it came back for a 4.3 V6 for GM trucks. i took the cap off and the ICM, pickup coil, rotor, cap contacts, and reluctor wheel all look brand new. I have heard of people getting a new distributor and seeing a noticable difference in running performance over the stock one. Even just a new ICM. My question is can i swap all the guts out of this one and stick it all in my stock distributor housing?

Here is how it looks

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jwrape
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Report this Post08-16-2012 06:32 AM Click Here to See the Profile for jwrapeSend a Private Message to jwrapeEdit/Delete MessageReply w/QuoteDirect Link to This Post
definately looks a lot like the 2.8L Distributor
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Red87FieroGT
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Report this Post08-16-2012 04:52 PM Click Here to See the Profile for Red87FieroGTSend a Private Message to Red87FieroGTEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by jwrape:

definately looks a lot like the 2.8L Distributor


Thats why i grabbed it. From what i see, the only real difference between this one and my original is the the distributor shaft housing is about 2" taller to make up for the taller deck height on the 4.3. I am almost positive that everything else will swap over except i am not entirely sure about the ICM. I dont know if they work the same exact way and may or not be interchangeable.

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Raydar
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Report this Post08-16-2012 06:02 PM Click Here to See the Profile for RaydarClick Here to Email RaydarSend a Private Message to RaydarEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by jwrape:

definately looks a lot like the 2.8L Distributor

...
I would go to Rockauto and see if they list the same ICM for the 2.8 and 4.3..

[This message has been edited by Raydar (edited 08-19-2013).]

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css9450
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Report this Post08-16-2012 08:31 PM Click Here to See the Profile for css9450Click Here to Email css9450Send a Private Message to css9450Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Red87FieroGT:
Thats why i grabbed it. From what i see, the only real difference between this one and my original is the the distributor shaft housing is about 2" taller to make up for the taller deck height on the 4.3.


I think the shaft would be too long then, thus you'd have to press the magnet or pole piece off the 4.3 shaft and onto the 2.8 shaft.

Someone on here has done the swap but I do not recall if they did a how to.

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phonedawgz
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Report this Post08-17-2012 10:01 AM Click Here to See the Profile for phonedawgzClick Here to visit phonedawgz's HomePageClick Here to Email phonedawgzSend a Private Message to phonedawgzEdit/Delete MessageReply w/QuoteDirect Link to This Post
The dist caps are the same. The ICMs are the same

The shaft along with being the wrong length, also has the wrong oil pump drive coupling on it. Rather than the Fiero hex oil pump drive coupling, it has the blade type (SBC)

This images is larger than 153600 bytes. Click to view.

[This message has been edited by phonedawgz (edited 08-17-2012).]

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Red87FieroGT
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Report this Post08-20-2012 07:19 PM Click Here to See the Profile for Red87FieroGTSend a Private Message to Red87FieroGTEdit/Delete MessageReply w/QuoteDirect Link to This Post
Well i just did the swap and the car does seem to run much better. Almost all of the magnets on my factory reluctor wheel were either cracked, had missing chunks, or almost non existent. The pick-up coil was no prized peach either. There was no real power increase but i wasnt expecting that. Only thing i did notice is that it seems to have a little more torque down low because i can take off and go through the gears under normal acceleration with less effort. Throttle response is better also. I havent filled up with gas yet but im interested to see if my MPG goes up as a result. Overall though i am very pleased with the result. And i cant argue with the price either.

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Inferno
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Report this Post08-18-2013 10:47 PM Click Here to See the Profile for InfernoClick Here to Email InfernoSend a Private Message to InfernoEdit/Delete MessageReply w/QuoteDirect Link to This Post
So to bring this back from the dead.....

Did you just drop in a 4.3L Distributor without any issues?
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n7vrz
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Report this Post08-19-2013 11:46 AM Click Here to See the Profile for n7vrzClick Here to Email n7vrzSend a Private Message to n7vrzEdit/Delete MessageReply w/QuoteDirect Link to This Post
No, you can't just 'drop it in'.
As stated in earlier postings:
1. The shaft is too long.
2. The oil pump drive is different. The Fiero oil pump uses a hex drive and the 4.3 dizzy has a blade drive. They aren't compatible.
You have to take the 'guts' out of the upper end of the 4.3 dizzy and swap them into an existing 2.8 dizzy. (Don't try to swap the shaft. Again, it will not work.)
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phonedawgz
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Report this Post08-19-2013 06:30 PM Click Here to See the Profile for phonedawgzClick Here to visit phonedawgz's HomePageClick Here to Email phonedawgzSend a Private Message to phonedawgzEdit/Delete MessageReply w/QuoteDirect Link to This Post
But if you don't swap the shaft you can't swap the stator. And the pick up rotor is pressed onto the shaft. So the only way this could work is if you could press the rotor off of the old shaft and then press it on the new shaft. Also the pick up rotor's rotation on the shaft needs to be aligned with the top high voltage rotor. And since there are magnets in the pick up rotor, be careful not to heat it or damage it.

I really can't see how any of that 4.3 dist can be used successfully in a 2.8 dist.
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mmeyer86gt/gtp
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Report this Post08-20-2013 03:23 AM Click Here to See the Profile for mmeyer86gt/gtpClick Here to Email mmeyer86gt/gtpSend a Private Message to mmeyer86gt/gtpEdit/Delete MessageReply w/QuoteDirect Link to This Post
parts that are interchangable are the coppercap and the pole piece along with the icm. i have done that swap on just about all my fieros and i believe that it improves spark and less hesitation in the engine for the electrical system because it doesn't get covered in rust as fast.
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2.5
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Report this Post08-20-2013 08:50 AM Click Here to See the Profile for 2.5Send a Private Message to 2.5Edit/Delete MessageReply w/QuoteDirect Link to This Post
I have a 4.3 dist cap and rotor on my 2.8, its was cheaper and easier to find in a good MSD brand than 2.8 stuff.
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Big.E.In.Crooked.I
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Report this Post08-20-2013 09:29 AM Click Here to See the Profile for Big.E.In.Crooked.ISend a Private Message to Big.E.In.Crooked.IEdit/Delete MessageReply w/QuoteDirect Link to This Post
This one's right on time. Thanks fellas.
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phonedawgz
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Report this Post08-20-2013 04:05 PM Click Here to See the Profile for phonedawgzClick Here to visit phonedawgz's HomePageClick Here to Email phonedawgzSend a Private Message to phonedawgzEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by mmeyer86gt/gtp:

parts that are interchangable are the coppercap and the pole piece along with the icm. i have done that swap on just about all my fieros and i believe that it improves spark and less hesitation in the engine for the electrical system because it doesn't get covered in rust as fast.


But rust doesn't affect the magnetic properties.
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Inferno
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Report this Post08-22-2013 07:33 PM Click Here to See the Profile for InfernoClick Here to Email InfernoSend a Private Message to InfernoEdit/Delete MessageReply w/QuoteDirect Link to This Post
So with that being said then, this ICM would fit into our stock units?
http://www.msdignition.com/...t_for_8366/8367.aspx
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Inferno
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Report this Post08-22-2013 07:42 PM Click Here to See the Profile for InfernoClick Here to Email InfernoSend a Private Message to InfernoEdit/Delete MessageReply w/QuoteDirect Link to This Post
So with that being said then, this ICM would fit into our stock units?
http://www.msdignition.com/...t_for_8366/8367.aspx
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