76 Spider gas tank and exhaust manifold - Alfa Romeo Bulletin Board & Forums
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post #1 of 10 (permalink) Old 05-03-2015, 05:58 PM Thread Starter
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76 Spider gas tank and exhaust manifold

I want to remove my gas tank to clean it etc.... It is a simple job but I have ran into a snag. Most of the screws in the trunk the heads are gone. I can drill most of them out but there are some near the sides of the car that I can not get a drill to. Any ideas??? I have not tried drilling any of them out yet. I am hoping to get a better idea here.

Also need to remove the exhaust manifold to get to the crack on my block. What size are these??? I cant seem to find anything that will fit. Currently they are soaking is some wd-40.

Thanks for the help.
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post #2 of 10 (permalink) Old 05-03-2015, 06:29 PM
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Also need to remove the exhaust manifold to get to the crack on my block. What size are these??? I cant seem to find anything that will fit. Currently they are soaking is some wd-40.
On my '85, the exhaust manifold nuts take a 13mm wrench.

Rich

'85 Spider Veloce
'17 Giulia Ti Sport
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post #3 of 10 (permalink) Old 05-05-2015, 12:25 PM
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I've found PB blaster to be far superior to Liquid Wrench for loosening stuck nuts. WD-40 is practically useless in comparison.

Those nuts are supposed to be brass, by the way. Brass doesn't get stuck. You can get the correct brass nuts from any of the usual suspects.

Also, try some heat from a propane torch to get those nuts off. But use the PB blaster first. You can get a plumbing torch from the hardware store for 20 bucks.

Steve Bock
'77 Spider with SPICA
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post #4 of 10 (permalink) Old 05-05-2015, 01:34 PM
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I've found PB blaster to be far superior to Liquid Wrench for loosening stuck nuts. WD-40 is practically useless in comparison.
Scientific tests show the exact opposite. WD40 and PB Blaster are almost identical and liquid wrench easily outperforms both of them. I have posted a link to this in several threads.

Ed Prytherch
79 Spider
76 Suzuki GT500
2011 Jaguar XKR

A little government and a little luck are necessary in life, but only a fool trusts either of them. - P.J. O'Rourke
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post #5 of 10 (permalink) Old 05-06-2015, 11:23 AM
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Make sure that you fully empty the tank and air it before you use the Torch...

1971 Alfa spider 1750............
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post #6 of 10 (permalink) Old 05-06-2015, 11:57 AM
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Scientific tests show the exact opposite. WD40 and PB Blaster are almost identical and liquid wrench easily outperforms both of them. I have posted a link to this in several threads.
I find WD totally useless, tbh.....OK to lubricate something in the short term.

pity you guys don't have PlusGas 'Formula A' dismantling lubricant over there (or do you?)

.....as it says on the can: "nothing penetrates faster"


Dom - Alfa Spider 1990 S4 - formerly: Alfa 101 Sprint, 2600 Sprint, Montreal - family classics: Jensen Interceptor II, '58 Hooper RR Silver Cloud I, Shadow II, '60 Corvette.
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post #7 of 10 (permalink) Old 05-06-2015, 12:07 PM
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Looking at your tank screws.. .Check out from under the car and see if you can see them coming through the trunk floor plate. I have used long nose vice grips
to get them started.
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post #8 of 10 (permalink) Old 05-06-2015, 02:31 PM
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Scientific tests show the exact opposite. WD40 and PB Blaster are almost identical and liquid wrench easily outperforms both of them. I have posted a link to this in several threads.
Really? WD-40 is mostly oil with additives, isn't it? I know my experience is anecdotal, but I've found both of the other two much better for loosening stuck nuts and bolts... and PB blaster in my experience wins the day.
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Steve Bock
'77 Spider with SPICA
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post #9 of 10 (permalink) Old 05-06-2015, 03:58 PM
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Really? WD-40 is mostly oil with additives, isn't it? I know my experience is anecdotal, but I've found both of the other two much better for loosening stuck nuts and bolts... and PB blaster in my experience wins the day.
See post #6 in this thread. It is not subjective!

I use a 50/50 mix of acetone and ATF. It came out tops.
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Ed Prytherch
79 Spider
76 Suzuki GT500
2011 Jaguar XKR

A little government and a little luck are necessary in life, but only a fool trusts either of them. - P.J. O'Rourke
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post #10 of 10 (permalink) Old 05-07-2015, 05:18 AM
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For Inquiring Minds

Per April/May 2007 edition of Machinist's Workshop:

"Penetrating oil . Average load .. Price per fluid ounce
None ................. 516 pounds .
WD-40 ............... 238 pounds .. $0.25
PB Blaster .......... 214 pounds .. $0.35
Liquid Wrench ..... 127 pounds .. $0.21
Kano Kroil .......... 106 pounds .. $0.75
ATF-Acetone mix.. 53 pounds .... $0.10

The ATF-Acetone mix was a 50/50 mix (1 to 1 ratio)"

Another interesting read is this link.

Personally the only products I have had success with are PB and Kroil.
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Jason
'79 Spider
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