rextr

iTrader: (1)

Can someone give me an accurate measurement between the two points in the picture? It doesn't matter if its measured on the stock manifolds or a header just as long as its from an EJ255 or EJ257. I think the header I have is too wide by 1/2".

xhengmanx

iTrader: (57)

are you sure you are putting in all 6 studs (both side) through the hole at the same time and not one side at a time?

rextr

iTrader: (1)

I did try to do it one side at a time and now thinking about it that could be the reason but I would still like the measurement before I tear the stock one off again.

pimpasaurus jr

iTrader: (1)

Loosen that mounting up in the middle of the headers.... mount the headers to the exhaust manifolds carefully.... then tighten it back up. Should give you a good fit. May have to hit one side of the headers with a rubber mallet to get it lined up correctly. Then tighten it down.

rextr

iTrader: (1)

The middle was definitely loose. I tried hitting it with a mallet as well, it's as far in as it goes.

rextr

iTrader: (1)

Here's some new pics. I went ahead and took the stock manifolds off and measured them. The new header is off nearly 3/4" and that is with the header as far into the slip joint as possible. The stock manifold measures 16.5" across and the header measures 17.25".