86 Q's
Thread Starter
Instructor
Joined: Oct 2002
Posts: 126
Likes: 0
From: STERLING Va
86 Q's
How can I tell if i have iorn or aluminum heads?
Ok here is the problem, My car(1986 Coupe) needed plugs so i went out to atvace auto and bought some bosch platnam's. they asked if i had iron or aluminum head i assumed i had iron so, I got the plugs for the iron head they said to gap at .045, the haynes repair manual said gap at .035, my sticker on the engine said to gap at .035 so i gapped at .035.
The car dosent feel right now and about every minute i hear a clicking(relay i think) and then i hear all of this air being pumped somewhere. please help me figure out what to do
Thanks
Ok here is the problem, My car(1986 Coupe) needed plugs so i went out to atvace auto and bought some bosch platnam's. they asked if i had iron or aluminum head i assumed i had iron so, I got the plugs for the iron head they said to gap at .045, the haynes repair manual said gap at .035, my sticker on the engine said to gap at .035 so i gapped at .035.
The car dosent feel right now and about every minute i hear a clicking(relay i think) and then i hear all of this air being pumped somewhere. please help me figure out what to do
Thanks
Team Owner
Joined: Feb 2000
Posts: 51,504
Likes: 6
From: Sacramento CA
Re: 86 Q's (CLUTCH^Master)
iron heads will have the bolts around the outisde "lip" of the valve cover,
aluminum heads have the bolts in the middle of the valve cover.
Sounds like you knocked a vacuum line loose.. inspect all vacuum lines near distributor and plug wire routing
[Modified by Kale, 3:12 PM 10/31/2002]
aluminum heads have the bolts in the middle of the valve cover.
Sounds like you knocked a vacuum line loose.. inspect all vacuum lines near distributor and plug wire routing
[Modified by Kale, 3:12 PM 10/31/2002]
Team Owner
Joined: Sep 2001
Posts: 62,160
Likes: 1,733
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: (CLUTCH^Master)
BTW whats your VIN#
If you have a coupe, we're trying to figure out when exactly it went over to AL heads.
If you have a coupe, we're trying to figure out when exactly it went over to AL heads.
Race Director
Joined: Aug 2002
Posts: 17,367
Likes: 1
From: Kentucky
Re: (CLUTCH^Master)
Sweet!!! Na na na I got aluminum heads!!! Thats like 5 more hp right!!! oh yeh and i didnt even need a wing or sticker!!!!! :smash: :cheers: :chevy
Drifting
Joined: Jan 2002
Posts: 1,606
Likes: 1
From: Las Cruces NM
Re: (Cooter)
Think of it this way, if you ever get performance aluminum heads, you'll you'll feel more of a difference than the guys with aluminum heads already since you'll get that 5hp plus more and a pretty hefty weight reduction. I too am an iron head '86 owner. Besides, iron heads are more durable.
My car is number 12,934.
My car is number 12,934.
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Melting Slicks
Joined: Feb 2002
Posts: 2,699
Likes: 2
From: The Black Hole LA
Re: (okinawa86vette)
Think of it this way, if you ever get performance aluminum heads, you'll you'll feel more of a difference than the guys with aluminum heads already since you'll get that 5hp plus more and a pretty hefty weight reduction. I too am an iron head '86 owner. Besides, iron heads are more durable.
My car is number 12,934.
My car is number 12,934.
yeah they are more durable IMO. I have overheated the car to 300* :eek: before (water pump went on a long road trip) and didn't even blow the head gasket or screw the heads up. I do wish I had the aluminum though for the prformance aspect of it. Having said that anyone know what the Iron heads will flow after being P&P compared to the aluminum? Hope this doesn't constitute stealing the thread.
Safety Car
Joined: Dec 1999
Posts: 4,691
Likes: 1
From: Framingham MA
Re: (vader86)
BTW whats your VIN# If you have a coupe, we're trying to figure out when exactly it went over to AL heads.
Team Owner
Joined: Sep 2001
Posts: 62,160
Likes: 1,733
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: (dgoodhue)
BTW whats your VIN# If you have a coupe, we're trying to figure out when exactly it went over to AL heads.
I think its around ~13,500. I thought that I read an exact number somewhere...
I think its around ~13,500. I thought that I read an exact number somewhere...
Its gotta be somewhere around 18K, but i want to pin it down closer.
Instructor
Joined: May 1999
Posts: 199
Likes: 0
From: Lake Havasu City Arizona
Re: (dgoodhue)
Aluminum heads #22321
Please someone correct me if I wrong. I believe the aluminum head plugs have more threads per inch and a longer threaded shaft than the iron head plugs do. I was told this was to prevent people from stripping the threads in the aluminum heads, so I hope no one puts the iron head plugs in the aluminum heads.
PC
[Modified by Pete Clough, 12:28 PM 11/1/2002]
[Modified by Pete Clough, 3:10 PM 11/1/2002]
Please someone correct me if I wrong. I believe the aluminum head plugs have more threads per inch and a longer threaded shaft than the iron head plugs do. I was told this was to prevent people from stripping the threads in the aluminum heads, so I hope no one puts the iron head plugs in the aluminum heads.
PC
[Modified by Pete Clough, 12:28 PM 11/1/2002]
[Modified by Pete Clough, 3:10 PM 11/1/2002]