Just thought I'd warn you guys not to use Devcon to plug the holes created from doing the throttle body mod. I used some, and notice that in the bigger hole (that opens to the front of the engine bay) it was starting to get sucked in toward the inside of the throttle body. I immediately went out and bought some taps and plugged that hole, but left the other filled with the Devcon, as it would be quite horrific to get to without removing the throttle body (and I don't have a gasket to replace the old one so I can't yet remove it.) Anyway, after tapping the hole toward the front of the car, I filled some JB weld in the remaining area (outside the throttle body) and it has been solid ever since. However, I just noticed today that the other chunk of Devcon that was supposed to be plugging the hole on the back side of the throttle body is gone!!!!!!!!! That means, of course, that it can only be in my engine! Well, it still runs as of now, and I'm hoping I'll get lucky and that the chunk of Devcon will just slip through the engine and be burnt up and exhausted, but we'll see. I'm quite leary of that stuff now, and just wanted to give you all a forewarning so that you don't make my same mistake. By the way, yes I put the Devcon down in 1/8" layers and allowed it to dry. It is just weak. So, if you decide to do the throttle body mod, take the safe way and just tap the whole and screw in a plug.

Also, what are your opinions on the fate of my engine. It was probably about a 1/4"-3/8" piece of Devcon that got sucked in. I'm hoping for the best, but even if something does fail on it, it will just be an excuse to finally do a 3-rotor or TII swap .


Oh well, thanks guys.


-Derek

 

I used 1/8NPT plugs to fill my holes and it worked great. Just tapped the holes and screwed in the plugs with some thread sealer of coarce.

 

where do u get the plugs?

 

Accually I snagged them from work, we have thousands of them there. You sould be able to pick some up at a local plumbing/hardware store I'd imagine.

 

You are so lucky you didn't pop your engine. That would have been a shitty way of going out!

 

yeah 1/8NPT plugs should be easily found at Home Depot, Orchards Supply, etc in the plumbing section.

PaulC

 

ncsulim change ur oil immediately!! see if it slipped towards the oil pan hopefully ! hurry do it now!!!i ffel ya bro

 

:thinks of intake track:

How would it get into the oil??

I'd be more worried it's sitting at the VDI, or the LIM; just waiting to get sucked into the engine.

 

pull the LIM dude...would you rather find out it was in there when your engine blows? if it were me id at least try to see if its somewhere in the intake tract...and if it isnt you can start praying.

 

devcon gets hard I take it? If it came out while the engine was runing, chances are its already in the exhaust or has been "passed" by the motor. If she still runs then there's no problems.

It might have gotten sucked into the 6 port mechanism and gotten stuck there too... if its pliable I wouldn't worry too much about it.

 

Do you know how a rotary works or any other engine for that matter?

 

Long time ago I was even poorer than I am now and I thought I might be able to patch up a rusty Mazda GLC gas tank with Devcon. But first a test: I set some up on a cleaned piece of scrap metal and let it cure properly. Then I dunked it is a can of gas for about 12 hours. It came right off - Devcon is hard sh*t, but gasoline is a solvent.

About the "check your oil" comment, I disagree. It's probably floating in your blinker fluid resevoir.

 

What DEVCON product did you use? The only make about Eleven Bizillion kinds of DEVCON. Did you follow the MFG's instructions completely? Particuliarly the one : Roughen the surface by grit blasing(80-40 mesh grit) or grinding. a 3-5 mil profile is desired for most applications"


For DEVON Plastic Steel Putty the directions for application can be found here: http://www.devcon.com/techinfo/101.pdf

Don't fault the material, Devcon products are used to fill the stock side ports in peripheral port engines with NO PROBLEMS. Most failures can be traced to:
Incorrect Selection of the product for environment it will work in or Incorrect Preparation of the substrate.

 

JEC-31 WROTE: "About the "check your oil" comment, I disagree. It's probably floating in your blinker fluid resevoir."

If it passed threw, its probly stuck in the muffler bearings, check your flux capacitor also.

 

Haha... ouch... damn would I hate to be in NCsublimes position now...


(BTW, NCsublime:
-if engine was running when devcon was ingested and engine still runs, then continue to run engine... (and plug that hole!)
-if engine was stopped when devcon ingested DO NOT START ENGINE! pull the intake manifold... (cost of new gaskets VS. cost of new engine)
....and use the right stuff next time? )

 

Well, you can fault me for what happened, and YES it is my fault, because I'm the one who used it, but I GUARANTEE I did exactly what the directions said. I don't really care anyway. What's done is done, and I've learned my lesson. Just giving you guys a heads up so that you might learn my lesson too.

BTW- The engine was running when it was sucked in. I don't know how else it would have been missing. It still runs for now. I'll be pulling the manifolds soon anyway to clean, polish, and replace the 5th/6th port sleeves, so hopefully there is no damage.

Also, while you guys are here, you may be able to help me with something else. I have had idle problems ever since I've owned my car (over 3 years). Although it is currently disconnected (I'm replacing a frozen compressor), my AC would always make my car die when used. Now, I don't use the AC obviously, but my idle still drops very low ONLY WHEN THE CAR IS IN NEUTRAL, and stumbles and almost dies. I've cleaned the BAC (it was VERY dirty), removed the ACV, and the only other thing I can think of is the TPS. I have a new (used) one, but haven't yet installed it. I am having trouble getting to the screw that is underneath the TPS, so I haven't replaced it yet. Is this most likely my problem?

Thanks for the help,
Derek

 

any dyno results on the TB mod? I have a modded one, just waiting for a new gasket from mazda to put it in