Thread: R&D Manifold X-tender Help

Quote: Originally Posted by comish71 I have an R&D manifold X-tender with O2 bung. I am having some trouble mounting this to the X waterbox with the V-band clamp. It appears that the waterbox flange + X-tender are too wide for the Stock v-band calmp. Anyone have this problem? Help appreciated. Thanks....

Yes I did. I actually have the waterbox out and tried flipping over the X-tender. It only goes on one way as there is a concave and convex part which fits in the exhaust manifold and waterbox.

You need the V band clamp that goes on a J pipe. I had the same problem. The flange on the extender is like the j pipe and is not as wide as the straight pipe exhaust. j pipe v band will fix your problem.

Will have to double check that. I tried both clamps and none seem to fit. I actually put both clamps next to each other and they had on the same numbers stamped on them as well as looked exactly the same. I thought they were the same part, will look it up in the original parts finder.

Part numbers are actually different, so will give it a try again with the other clamp. Will keep you posted. Thanks.

I ran into this. If using the new exhaust: You need the V-band clamp for the older J-pipe setup, on the manifold side, and the 08 V-band clamp for the X-pipe side. If you are using the J-pipe setup, you need two of the older V-band clamps.

I have the one clamp here. If recall right they both have K-72, this one has B14, 50429-1. anyone got both sets of clamps within eyeshot to verify. thanks guys.

So i got both clamps and the numbers on them are identical. I know that the one v-band clamp is from my 2007 rxt with j pipe. The other came with the x-water box, head pipe assembly, and v-band clamp. Unless the v-band clamp was not the original one for the x-waterbox I can't figure out why the X-tender would not fit. I tried both. Wonder if I possilbly have to machine down the larger flange...

Quote: Originally Posted by comish71 So i got both clamps and the numbers on them are identical. I know that the one v-band clamp is from my 2007 rxt with j pipe. The other came with the x-water box, head pipe assembly, and v-band clamp. Unless the v-band clamp was not the original one for the x-waterbox I can't figure out why the X...

Quote: Originally Posted by comish71 So i got both clamps and the numbers on them are identical. I know that the one v-band clamp is from my 2007 rxt with j pipe. The other came with the x-water box, head pipe assembly, and v-band clamp. Unless the v-band clamp was not the original one for the x-waterbox I can't figure ...