TB removal and then some!!!

[Roadster]

Originally Posted by Mystic ZR-1

If the pencil magnet works on the SS bolts, probably not SS?

This is what I ordered...
ARP m6-1.00 12PT STAINLESS STEEL FLANGE BOLT (size may vary)
the description also states that they are 300 stainless steel
which I don't have a clue to what the 300 means....

I do not know the correct answer to that, so I did a google.
this is what I found...

Will a magnet stick to stainless?
"Due to this difference, ferritic stainless steels are generally magnetic, while austenitic stainless steels usually are not. A ferritic stainless steel owes its magnetism to two factors: its high concentration of iron and its fundamental structure."

I would imagine then that these bolts are ferritic SS.

Looks like we both found the same answer.....lol

[BigJohn]

Ferritic stainless steel will rust!

[Roadster]

Originally Posted by BigJohn

Ferritic stainless steel will rust!

I don't have the knowledge of the SS metals by any means.... but FYI Jerry's SS bolts which I also have, also stick to the pencil magnet as well. So if that is the case, then I am assuming that those bolts are also ferritic stainless steel as well. And if so that would mean they would also rust???
The simple solution to all of the rusting issues on either style bolt, is to change them when they do!!!


Then again from the above quote....
"ferritic stainless steels are generally magnetic, while austenitic stainless steels usually are not"

the words "usually are not" can also be interpreted that these bolts can also be austenitic stainless, which could mean that some are and some aren't......hmmmm the mystery continues.....

[BigJohn]

They can rust but not as quickly as mild steel with chrome heads.
We have used them on water features and they rust; the treated water is more corrosive than any water/moisture you have or use on your engine.

[Jagdpanzer]

Tom,
Unless you plan on doing a lot beach driving with an occasional dip in the surf you should be ok with these bolts being more or less rust free.

[Roadster]

John, I think I'll be fine with either one, I'm sure I'll be long gone before a change is needed...

I don't know Phil, was planning some beach drives at the Jersey Shore, guess I'll be rethinking that.....lol

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[BigJohn]

I live eight miles from the ocean and the salt air still corrodes some aluminum parts!
I do stay away from the water front during big storms and tidal surges.

[Roadster]

Originally Posted by BigJohn

I live eight miles from the ocean and the salt air still corrodes some aluminum parts!
I do stay away from the water front during big storms and tidal surges.

I've been going down to the Jersey Shore long enough to know what you mean. You really have to watch in that environment.

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[Roadster]

Plenum is now torqued down and secure @ 19 in-lb. Although it has been said, IIRC that when blocking the coolant from the plenum and TB, it is not necessary to torque the plenum bolts to spec. I did torque to spec or close to it, as my 1/4" drive TW starts at 20 in-lb. So I just torqued by feel as evenly as possible and did not get the click for the 20 in-lb setting.

I coated all of the bolts for easy removal in the future. I used Perfect Seal and an artist brush to apply a very thin coat. All went well...

I did run into a problem with bolt #12 which is located at the rear of the plenum on the passenger side above #8 cylinder. I found out that the fuel line was in the way not allowing the 12pt or the SS bolt (from Jerrys) to be inserted. I then loosen the fuel line so I could get better access and of course some fuel squirted out (I am sure because of being under pressure) for a second or two.
I was then able to install the 12pt bolt with no problem. Tighten up the fuel line and I was then able to get my socket in there for torqueing down the bolt.

The flat SS washers came in on Friday, I ordered "thin" 5/16" & 1/4" SS washers and they worked out just fine. They were less expensive than ordering a new set of the SS Metric versions. The non-SS metric (zinc) ones that I had ordered from before are really wider as you will see in the pics.
Thanks to Jep for his suggestions and recommendations for the bolts, washers and much more....appreciated.....

metric washer on the top, SAE washer on the bottom...appears to be same inside diameter, but you can see the difference in the overall diameter...

plenum bolt with metric washer, you can see how it extends outside the 12pt bolt...

plenum bolt with 5/16" SS washer...you can see how it is flush with the 12pt bolt with no extension outside the bolt...

how to set the washer between the runners that are tight....used the pencil magnet to hold the washer in place and a sprayer extension tube to press down on the washer and release the magnet when in place, worked great...

inserting the bolt(s) with the pencil magnet....no problem...

[Roadster]

thin coat of Perfect Seal applied to the bolt...overkill....maybe, but it is done...

10mm deep socked works great to tighten down those hard to reach bolts as well as all of the bolts...no need to use your fingers anymore trying to put the bolts in place....

#12 bolt, looking at it from this angle, you may say it looks like no problem getting in there.....not....unless I missed something about installing the bolts at one time or another, the fuel line does present a slight install problem...

now from this angle, you can see what I mean about installing the bolt and the fuel line in the way....once installed the 10mm socket fits perfect to tighten with no interference at all...

RS....done...

LS....done...