not a problem man

I've got the DP wrapped and sealed now. I soaked the wrap for a few minutes before applying which I think helped to get it on tight without bunching or puckering in it in any places.



This method should be helpful if you don't have an assistant handy:

After I got started it seemed easier to sit the DP up vertical and turn it to apply the wrap. After getting about half way done turned the pipe over sitting it on the other end and continued to turn the pipe working upward the rest of the way.



I used the 2 inch wrap and cut a V on the side on my first pass when the wrap was going to hit the oxy sensor port. On next pass I got the port in the middle of the wrap and put in a small slit lengthwise with an Xacto knife for the port to poke through.



Used the silver colored DEI sealer.



I like the worm clamp suggestion. They definitely aren't going anywhere.



The DEI package instructions said something about overlapping up to a quarter inch and it not adversely affecting the pipe. Is there really any issue here with hurting the pipe? 50% overlap was mentioned above. I assume people have run with overlaps greater than the quarter inch DEI said and haven't a problem. I'm not even sure what they are talking about adversely affecting the pipe unless they mean warping the pipe from uneven heat retention.



[attachment=46765:dp_1.JPG] [attachment=46764:dp_2.JPG]

If the downpipe is decent quality, you shouldn't have to worry. I overlapped mine about 50% because I realized I had plenty and rotary exhaust is hotter. That same pipe has been wrapped that way for ~6 years with no issues. The only difference is that in my case, the DP is mild steel, so I coated it first with the sealant, wrapped it, and then coated the wrap with sealant. Stainless doesn't need the initial coating and should be even stronger for the heat.

Looks good. Nice job on going around the O2 sensor too.



FWIW, I used the left-over to wrap the inlet and outlet to the cat too.

Also, if you didn't have it plugged before hand, I'd clean the threads of the O2 sensor port of any sealant before installation.

I had the O[sub]2 [/sub]port taped up. Thanks for the help.

Nice job! What size of roll did you buy? I read that you used the DEI 2" wrap, but was it the 15' or 50'? The FAQ says that for a 2" wrap you need 60' per linear pipe foot.

I had a 50' roll. Based on what I had left the 15' wouldn't have been enough. I used a bunch of the sealer too, about half of the spray can, it gave it a tough hard texture when it fully cured.

???

If I understand that correctly, that means you'd need a 180 feet of wrap for a 3 foot long (3 inch ID) downpipe?

DEI sells it in a 50 ft. roll. As mentioned above I had alot left over, even after overlapping 50%.

I'm guessing he meant 60", not 60'?

I like to use bailing wire to tie off the ends it looks cleaner than clamps but thats just me.