so i finally got to change the exhaust on my 91 vert.
unknown header to apexis mufflers, i was not able to fit the crossmember back on due that it hits the lower header pipe.
what are my options?
i have not tried to hammer the crossmember to see if notching it would give the pipe enough clearance,
other than that, what are other known alternatives??

thanks!

 

you got the correct header on the Vert?..

 

We put a Tii into the vert with the RX7.com (Rotary Performance) downpipe wrapped in insulation tape and had to use channel locks on the front flange of the cross member to get clearance. It wasn't any big deal.

 

i bought the exhaust used, it came from another vert, i just didn't think of the crossmember not being able to fit back on it

 

We put the cross member back on. With the roof loped off I dont think the cross member is optional.

 

I beat mine with a hammer a little. Didn't need much. But you don't want it to hit obviously.

 

What do u mean roof loped off?...and yes i agree not having a cross member is not optional...lol

 

When you say cross member are you talking about the transmission crossmember, or the vert specific k-member that ties into the front subframe and frame rails?

 

Thanks for the correction, i was not aware that u call it a k-member....yes, that is the vert specific part that i cant bolt back on

 

In a modern unibody car the roof provides a tremendous amount of structural integrity. When you read a car review about a convertible you'll often see a reference to "cowl shake". When you cut the roof off of a coupe to make a convertible, it weakens the structure and the car will become flacid and floppy and it is really obvious when the cowl shakes from the driver's position.

So to compensate for the strength lost by cutting off the roof the manufacturer will reinforce the chassis. The cross member is an example; the coupes dont have it. In addition, the RX7 verts have a bunch of extra structure behind the seats. That's why verts weigh more than coupes even those cloth weighs less than steel.

Hope that helps. Now get under the car with a hammer and a pair of channel locks and get the damn thing back in there!