11 replies to this topic

[danjohnston89]

Is it possible to lengthen/replace the existing header pipe bolts? I have recently bought a new set of header pipes (Original part off a different 4TX) and the flanges are much thicker than the ones on the original part. This means I can not fit the Copper gaskets to the pipes. Does anybody know a way around this?
Below is a picture to show this and a picture of the flanges on the new headers
Thanks, Dan

Attached Files

•  B0AE7872-0D86-4D20-89E0-1A82A4E131D0.jpeg   35.83KB   0 downloads
•  FA3ED6BF-AA6F-4493-97D1-4B829C61A07F.jpeg   24.42KB   0 downloads

Edited by danjohnston89, 05 October 2020 - 06:58 pm.

[Snowbird]

You always fit longer studs, get a length of threaded rod and cut to the size you want, do it with a hot engine and they will come out easier, to remove run 2 nuts on them and lock them together and undo by the nut closest the head.

I would guess M8x1.25 but wouldn't swear by it, use stainless studding.

[Studley Ramrod]

Are you using the original nuts ?  They're a cylindrical allen socket head and, from memory, should fit inside the flange bolt recess and tighten the lot up.

 

Pic of nut

[danjohnston89]

Studley, no Im not using them theyre just normal nuts- I was not aware they wasnt original but Ill have a look and try and locate some to buy. Thanks for that
Thanks Snowbird Ill give that a try if I cant locate the original nuts

Edited by danjohnston89, 05 October 2020 - 09:00 pm.

[Studley Ramrod]

Yambits do a replacement nut, says they're a direct replacement for the item listed above.  Not particularly cheap though.

 

https://yambits.co.u...eatjqmafo2sm4r6

[danjohnston89]

Studley, just looking at the flange there is not a recess on it for the nuts to sit in. Not sure if you can see that from the picture I attached

[dapleb]

The recess would be on t'other side of them there flanges (not shown in pic).

If you bought MK2 exhaust flanges and that's a MK2 enjun, they gotta be fitting somehow.

[Favs]

Have you dug out the composite crush gaskets from the cylinder head?

[Gdogg]

Good call Favs, if they’ve been in there a while they’ll be solid by now, that should free up a few mil with them out !

[Bjørge]

Some old flanges are thinner, or, to me they look thinner:

 

 433204-1-big.jpg   43.62KB   0 downloads

 

[danjohnston89]

Thanks for the comments, I haven’t checked for the old gaskets that may be stuck in the cylinder head- never thought of that so good call. I’ll let you know

[dapleb]

Looks like there are gaskets already in dare.