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RX-7 2nd Gen Specific (1986-92) RX-7 1986-92 Discussion including performance modifications and technical support sections.


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Old 11-24-2010, 04:52 PM   #1
sv51macross
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Default Bit of an emergency question here...

Hypothetically, say party A is a dunderhead and forgets to put tape over the ports of the L-LIM...and accidentally drops a 1/2" copper washer down the leading primary runner...what is the likelihood that washer will damage anything upon startup or turnover?






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Old 11-24-2010, 05:09 PM   #2
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100% eventuality. What you can hope for is that the rotor was in the way of the port opening and it didn't go into the chamber. Take the LIM off and get it out!
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Old 11-24-2010, 05:26 PM   #3
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Since it's a copper washer, a magnet won't work, so get a shop vac and try to suck the washer out.
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Old 11-24-2010, 09:43 PM   #4
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If Party A is lucky the copper washer will be stuck in the intake runners, but the LIM still has to come off to be sure.
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Old 11-24-2010, 10:06 PM   #5
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Or use a borescope.
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Old 11-24-2010, 11:30 PM   #6
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Quote:
Originally Posted by vex View Post
Or use a borescope.
This is what my dad was thinking. Since my mom is a RN at St. Joes, I was hoping she could get me a discarded endoscope.

Going to grab one of the cheap ones they sell at...[sigh] Harbor Freight. Crossing my fingers that FerociousP is right.
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Old 11-25-2010, 12:18 PM   #7
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Turn the motor upside down and shake it until the washer falls out.

Seriously though, good luck man. At least you know that you dropped it in there, which is better than finding out the hard way I guess...




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Old 11-25-2010, 12:31 PM   #8
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Quote:
Originally Posted by sv51macross View Post
This is what my dad was thinking. Since my mom is a RN at St. Joes, I was hoping she could get me a discarded endoscope.

Going to grab one of the cheap ones they sell at...[sigh] Harbor Freight. Crossing my fingers that FerociousP is right.
Hey! There is NOTHING wrong with Harbor Freight! LOL I can't leave there without a handful of things each time I go, which I suppose defeats the purpose of it being so cheap if you don't actually need the tools haha.

You might get lucky and the rotor will be in a position where it's holding it right there in the intake section. When I was building my engine back in 08 I accidentally broke the plastic injector piece (I forget what it's called now, but it's the piece that disperses the fuel even more) and it went down into the engine. I about lost my mind. I took off the LIM and the rotor was in the right position for me to reach in and take it out, so you might get lucky like that too.

And if your Mom can get her hands on an extra borescope I'd take one too. LOL

Good luck.
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Old 11-25-2010, 01:26 PM   #9
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Diffuser

I can't go into Horror Freight... or Grainger... or Sears for that matter. Although the Sears card I have has about 50,000 points on it so I'll be getting myself something nice for x-mas.

Is the engine in the car? If so, pull the LIM. If not, rotate the engine itself, NOT the eccentric shaft at ALL and see if it pops out. The other thing to try is one of those extendable pickers
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Old 11-25-2010, 02:24 PM   #10
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Ah diffuser, that's it! Thanks!
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Old 11-25-2010, 02:26 PM   #11
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Guys, how hard is it to remove the LIM? Not the middle section (which I thought was the LIM...maybe the MIM?) I just don't see any bolts and I get the feeling it's going to be hell trying to remove.
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Old 11-25-2010, 03:30 PM   #12
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Piece of cake. If you've got the UIM off, there should only be a few bolts and a few studs at the block. Haven't dealt with an S5 in ages though so I'm definately NOT the one to ask for a step by step.
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Old 11-25-2010, 03:44 PM   #13
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Quote:
Originally Posted by sv51macross View Post
Guys, how hard is it to remove the LIM?

Much Much easier then a rebuild

I have no idea about S4, or S5 but the REW it s quite simple... 4-5 bolts maybe...?

just take your time, and if you find it, be very careful when trying to pick it out, I've been in a little bit of a rush and pushed things father into the engine.. (it was the broken fuel diffuser now that I think about it... :P)

best of luck


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Old 11-25-2010, 03:53 PM   #14
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Well, managed to break another 2 vac lines moving the lower spider enough to remove the air control valve. I swear to [deity] I'm this [] close to buying a carb setup for her.

Sigh... The air control valve is off. Still can't see where the flying f*** the manifold bolts are, the shop manual isn't much help right now. Taking a break as I'm frustrated enough at her right now, going to make another attack later. At least it isn't as cold today as it was yesterday.
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Old 11-25-2010, 04:40 PM   #15
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Buy a bit of thin plastic tube, stick it in the end of a vac and seal it with masking tape on and stick it down the runners and it will pick the washer up. Simple
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