Switching from FFR to Gasn side pipes

[Nigel Allen]

G'day all,

My stainless FFR side pipes have blown out after 8,000 miles, no surprise really, especially bad on the drivers side, which has become unbearingly loud. I have ordered and received the beaut touring side pipes from Georgie at Gas'n. Ignoring the support mounts, my question is; if I bolt the pipes to the existing flanges, do they line up the same as the FFR pipes did?

The reason I ask is because I had to fab up my own intermediate pipes between the BBK headers, and the FFR pipes, due to the RHD configuration of the car. These intermediate pipes also included cat converters. I am hoping the new side pipes will follow the same positioning as the FFRs did, mainly because I don't want to take the car off the road for long, when our driving season has just kicked off.

Would really appreciate any feedback on experience with this conversion.

Many thanks,

Nige

[UpstateCobraGuy]

It's been a while, but I have nothing but good things to say about Gas-n pipes. I do believe I ended up putting a Breeze shim on my driver's side (your PS). Again, yours may be different.

[Jeff Kleiner]

I've had a few cars come through which were initially built with FFR pipes and then the owners had me change over to GasN while I was doing the body and paint. My experience with all of those has been has been that they do not fit the same. While doing one a couple of years ago I snapped some pics:

FFR pipes:

https://thefactoryfiveforum.com/attachment.php?attachmentid=205497&d=1607038944

GasN pipes:

https://thefactoryfiveforum.com/attachment.php?attachmentid=205498&d=1607038994

This is left side and the right side was the same. The others that I have done have been similar. It requires wedges to straighten them and make the pipes parallel with the body. When wedges are used the pivot between the header flange and pipe flange moves the pipes in the body opening (in the case of the one shown the front of the pipes went forward) which means that the cutouts have to be modified. Also whenever wedges are used the increased stack up between the header and side pipe means that the pipes move outward which sometimes puts the flange into contact with the body thus again necessitating cutout modification.

Good luck!

Jeff

[Sdonnel]

If the budget allows it, I would also get the ball socket style headers from Gas-N, provided Georgie offers the engine choice you are using. The ball socket design is far superior to using all the wedges (ask Jeff, he has the pic of my wedge stack).

Scott

[JeffP]

I swapped my FFR out for Gasn touring and they dropped right in, even the hanger mounts.

[Nigel Allen]

Thanks everyone. All the feedback and advice is really helpful. I will have a crack at fitting the pipes in the next couple of weeks. As it is likely that the fit is close, I can modify the intermediate pipe between the BBK headers and the side pipe to get alignment.

Bring on the driving season!

Cheers,

Nige

[Theshandman]

Bring on the driving season!

Mid April for you relatively for us October northerners... Driving season down there is nigh!
I stuffed some foam in the forward door / body seal area to stifle the hot summer air incursion (which worked great) and now that the temps have moderated following summer, its time to remove the foam to offer a modicum of cabin heat. :-) No cold temp is going to prevent driving. But -ahem- I am in the "warn sunny South"...