major air box issue

[Dklever48]

Too many folks helping to change plug wires. Got off one hole in the distributor cap. Went to start and blew up the air box. How bad of a situation do I have?

[RSTarga]

new air box with flapper valve

[Scott R]

Have any other work that could be done while the engine is out?

[Dklever48]

so the engine has to come out to replace the air box?

[Flat Six]

I have a DME car so no personal experience, but maybe this will help:

Remove my CIS while in car

Good luck

[Scott R]

Originally Posted by Dklever48

so the engine has to come out to replace the air box?

No, not technically, you can do it with a partial drop. However if you want to do a really good job replacing the various gaskets and sealing it up, it sure is a lot easier. I've done this numerous times both ways, and anymore I just prefer the engine drop so I can do the valves and etc at the same time. That's why I was wondering if you had any other work to be done.

Also one more thing, you will likely replace the rubber boots to the intake runners as well, each is held on by two clamps and they must be aligned and tightened so that the runners sit flush on the heads. Why is this an issue? Well you can't reach the back clamps inside the car to adjust the runners if you need to. (well I can't anyway)

[area man]

+1 on what Scott R said.

Are you sure your air box is blown?

If it is, you can glue it instead of buying a new one. I just did this using 3M Scotchguard DP8010 glue as recommended on another thread on this forum. I've also had a glue called Manley 907 suggested to me by a mechanic who races a 914. I didn't want to spend almost 500 smackers on a new airbox and pop off valve. It has worked perfectly. But be careful to use the right glue because normal glue won't adhere to the airbox plastic.

I'd say do it with the engine out - probably easier that way all told.

[area man]

... But you do have to fix it or your engine will never run right.

[fanaudical]

I'm assembling my CIS on my engine (which is out of the car and on a stand) and I'm having "fun" reaching everything with full access. I'm sure it's possible, but I think very difficult to access everything if this was still in the car...

[Quicksilver]

If you watch the parts forum you will see a metal airbox every once in a while. Might be worth a search.

[stlrj]

I had very good luck with the 81 style air box with the internal tubing. I never had an explosion with it installed and never needed a flapper valve either. But it only works if you have the late style CIS with the aux air regulator (no hand throttle).