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Blockoff Plates

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Old 08-29-04, 09:27 AM
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Blockoff Plates

I'm going to buy some aluminum and cut out some blockoff plates, but I need to know how thick the aluminum should be. Thanks in advance.
Old 08-29-04, 09:35 AM
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Don't see why thickness should be a concern. As long as the Plate provides complete cover and good seal, you should be alright. What type of sealant/gasket do you intend to use??
Old 08-29-04, 09:39 AM
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I recommend purchasing one of the pre-made kits. The k2rd kits are very well made, inexpensive, and come with all the hardware needed to bolt them up. All the homemade BOPs I have seen have been rough and nasty looking, and didn't seal as well. Make sure you use silicone when mounting them.
Old 08-29-04, 09:41 AM
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Originally Posted by areXseven
Don't see why thickness should be a concern. As long as the Plate provides complete cover and good seal, you should be alright. What type of sealant/gasket do you intend to use??
If the aluminum is too thin, once you tighten down the bolt, the aluminum will deform and not seal properly. So I'm just asking what is the average thickness of most blockoff plates people buy/use.
Old 08-29-04, 09:48 AM
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Originally Posted by HDP
If the aluminum is too thin, once you tighten down the bolt, the aluminum will deform and not seal properly. So I'm just asking what is the average thickness of most blockoff plates people buy/use.
Affirmative. Sounds like GF's has the proper fix!
Old 08-29-04, 09:51 AM
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Originally Posted by GoodfellaFD3S
I recommend purchasing one of the pre-made kits. The k2rd kits are very well made, inexpensive, and come with all the hardware needed to bolt them up. All the homemade BOPs I have seen have been rough and nasty looking, and didn't seal as well. Make sure you use silicone when mounting them.
I'm only removing my airpump and main cat so I don't think I need an entire kit. I can make the exact ones I need and they won't turn out rough and nasty looking like the homemade BOPs you speak of. Bottom like is, I just need to know the thickness of the aluminum to buy, so would you guys please just provide the info I ask for...
Old 08-29-04, 09:57 AM
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Originally Posted by HDP
....., I just need to know the thickness of the aluminum to buy...
Why don't you measure the flange thickness on the original part you're removing and use that as a template for your plates??
Old 08-29-04, 10:18 AM
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check this out not that expensive and is complete, I got mine from here too
http://cgi.ebay.com/ebaymotors/ws/eB...spagename=WDVW
Old 08-29-04, 10:18 AM
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A quick google search sent me over to the 'lightning' page, where they recommend 1/8th in thick aluminum .

Rich
Old 08-29-04, 10:24 AM
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Originally Posted by areXseven
Why don't you measure the flange thickness on the original part you're removing and use that as a template for your plates??
Because I haven't taken anything off yet... I have all my old gaskets as templates. I want to have them made before hand to reduce down time... Jesus man! Why can't you just say... "the blockoff plates are ???" thick" and leave it at that... or if you don't know, say "sorry man, I just don't know how thick most BOPs are" it ain't that hard to comprehend what I'm asking!
Old 08-29-04, 10:25 AM
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Originally Posted by GoodfellaFD3S
A quick google search sent me over to the 'lightning' page, where they recommend 1/8th in thick aluminum .

Rich
Thank you so very much.
Old 08-29-04, 10:52 AM
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Originally Posted by HDP
Because I haven't taken anything off yet... I have all my old gaskets as templates. I want to have them made before hand to reduce down time... Jesus man! Why can't you just say... "the blockoff plates are ???" thick" and leave it at that... or if you don't know, say "sorry man, I just don't know how thick most BOPs are" it ain't that hard to comprehend what I'm asking!
Good Luck.
Old 08-29-04, 11:12 AM
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Thumbs up

Originally Posted by areXseven
Good Luck.
Thanks
Old 08-29-04, 11:19 AM
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FYI....
http://cgi.ebay.com/ebaymotors/ws/eB...category=46097
Old 08-29-04, 11:48 AM
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Don't forget you'll need bolts to replace the studs. The studs aren't threaded down far enough to reuse the nuts unless you use a thicker blockoff plate or washers.
Old 08-29-04, 12:00 PM
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Originally Posted by areXseven
Look through the thread I posted the exact same auction....lol...
Old 08-29-04, 03:22 PM
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Originally Posted by KaiFD3S
Look through the thread I posted the exact same auction....lol...
Great minds think alike!! ( sometimes they're not very attentive, though! )
Old 08-29-04, 04:31 PM
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Originally Posted by areXseven
Great minds think alike!! ( sometimes they're not very attentive, though! )
Tru dat.....
Old 08-29-04, 05:26 PM
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EDIT: nevermind... i read this too fast
Old 08-29-04, 05:41 PM
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Originally Posted by Mahjik
Don't forget you'll need bolts to replace the studs. The studs aren't threaded down far enough to reuse the nuts unless you use a thicker blockoff plate or washers.
How thick would they need to be? This is what I needed to know.
Old 08-29-04, 08:25 PM
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Originally Posted by HDP
How thick would they need to be? This is what I needed to know.
The Blockoff Plate kits come with everything you need (which is why they are kits). They come with bolts to replace the studs. If you want to get around replacing the studs, your best bet going to be to measure the unthreaded portion of the stud. You are already going to need to make a template of the area to cover for your block off plate, just measure the stud at that point.

Otherwise, remove the stud, run up to your local hardware store and find bolts of the same size/pitch.
Old 08-29-04, 08:34 PM
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You can either get bolts or if your intent on using the studs you can use washers to make up the difference. It probably wouldnt take but 2 washers to clear the flat spot on the stud. The thickness of the plate really isnt going to matter as long as its failry sturdy. You can deform alum plate if you tighen it too much but you dont need to tq these down any more than 10 ft/lbs so you shouldn't deform it. That said, 1/8" is a good sturdy thickness. Also use silicone to seal it, Permatex Ultra Gray works great, you can get it at Auto Zone or Advanced Auto.

Worse case, you can get the bolts from the Mazda dealer so they'll match all your other bolts, I think they are .50 cents each and you probably dont need many of them.


STEPHEN

Last edited by SPOautos; 08-29-04 at 08:50 PM.
Old 08-29-04, 08:39 PM
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Cool

I want to say the bolts you will need are M6x1.0, but my memory sometimes plays tricks on me
Old 08-29-04, 09:13 PM
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It is M6X1.0. I used 10mm long flange head screws. Oh ya and 1/8 thick sheet Al.
Old 08-29-04, 09:35 PM
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Originally Posted by SPOautos
Worse case, you can get the bolts from the Mazda dealer so they'll match all your other bolts, I think they are .50 cents each and you probably dont need many of them.
Autozone now carries IMPORT bolts and nuts now. They felt perfectly and looks very similar to stock. I also bought the ebay block off plates, it should arrive anyday now.



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