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On my latest project I found that I was running into some close quarters in and around my 2-1/2 inch exhaust pipe. I have a transmission cooler on one side and an E-stopp emergency brake actuator on the other. After speaking with the respective device manufacturers I decided that I needed some exhaust pipe heat insulation just to be sure that I would not cook these devices. After some research on the subject I decided to go with the titanium exhaust wrap that is shown in the photo. I am not sure about numbers yet with respect to percentage of heat radiated but from the documentation I feel that it will provide the isolation that I need. This wrap is a fiberglass that is made from lava rock...the rock is melted and formed into glass fibers then woven into this wrap. I see a number of racing bikes/cars using this wrap so there must be something to it. Has anyone else used this wrap on their exhaust systems? Any pros or cons?
I used it on a Toyota engine swap in my 4x4. The new V6 exhaust crosses over the back of the engine between engine and fire wall.
I put it on about 3 years ago and still working great. I put it on several areas in my engine compartment where exhaust came close to wiring and sensors.
There are those that say it will rust out your pipes but, I'm in AZ. and no issues so far. If it gets wet it drys right out anyway.
I didn't give any thought to rust but I can see where that would be a consideration. I built the exhaust system myself so I know that the pipes are "aluminized" and have 3 coats of VHT paint on them under the wrap. When I installed the wrap the instructions said to wet it first. It took a couple of days to dry but I would think that the dry time would be cut much shorter if the engine were run and the pipes heated up. I am hoping that this El Nino brings lots of rain to SoCal this year so I will have to keep an eye on how wet the wrap gets/stays. Thanks for the input...
I used it on a section of my header that is close to the steering box, and on another area close to the main battery cable (more for electrical insulating value than heat). I had painted the headers with a VHT-like product, it's long gone under the wrap. I've heard the rust issue too, I think it's coming from the motorcycle world where the pipes are much more exposed to weather (bikes parked outside).
I think a tin shield like OEM is far better, but also much harder to fab in tight quarters, and always the possibility of rattles.
I remember a friend bought a truck that the headers that were wrap... As we were pulling apart the to do a rebuild... when he grabbed one of the tubes of the headers all that was holding the shape was the wrap.. Every tube had melted and/or rusted.
I have a question about your trans cooler, are you adding a fan and/or shroud to force air threw the cooler
Pros are it works very well to control heat. I didn't read all the responses yet and I'm sure somebody mentioned corrosion potential by now.
I know some or all header manufacturers will void a warranty. I ran some on my Mustang for a sort time and you can definitely tell exactly where it was or was not installed.
I just woke up and Im typing with absolutely no filters on my brain yet so don't laugh to hard, but. Does ,and if not why doesn't somebody come up with different of lengths of exhaust that are constructed like double wall chimney used on wood stoves. Seems to this dummy (me) that it would be perfect in situations like Charlies. To be used only where needed obviously. By the way Charlie that looks super clean under there.
I just woke up and Im typing with absolutely no filters on my brain yet so don't laugh to hard, but. Does ,and if not why doesn't somebody come up with different of lengths of exhaust that are constructed like double wall chimney used on wood stoves. Seems to this dummy (me) that it would be perfect in situations like Charlies. To be used only where needed obviously. By the way Charlie that looks super clean under there.
Most of the time it is space considerations, or you could just route the pipe a little different. A double walled pipe would have to be pretty large O.D. to work. Making a heat shield for the item you are protecting works well too, but Charlie is up against some tight quarters. Exhaust pipe is not that expensive so he has probaby found the best solution.
Here is a photo of the trans cooler setup. All lines are -6 AN. Cooler is a Derale unit with an 8 inch fan built in. Air flow is down. Cooler is protected above and below by the frame crossmembers. Aeromotive filter is a 10 micron with a stainless steel element that can be removed and cleaned...no disposable paper elements. Fluid exits the trans, passes through the filter, passes through the cooler, and returns to the trans. Fan operation will be controlled via temp sensor. I am not anticipating the fan to be running very often but we'll see after the project is on the road.
Most of the time it is space considerations, or you could just route the pipe a little different. A double walled pipe would have to be pretty large O.D. to work. Making a heat shield for the item you are protecting works well too, but Charlie is up against some tight quarters. Exhaust pipe is not that expensive so he has probaby found the best solution.
If you have to have everything where the are right now then I think it's good, but I'm sorry, I think moving either the cooler and/or E-brake to make more room is better for a street vehicle... Otherwise if it's a trailer queen you wouldn't need the wrap...
I remember a friend bought a truck that the headers that were wrap... As we were pulling apart the to do a rebuild... when he grabbed one of the tubes of the headers all that was holding the shape was the wrap.. Every tube had melted and/or rusted.
Had the same experience, header tubes fell apart in my hands while removing the wrap. I know I will never use wrap again on headers, but the exhaust pipes dont get nearly as hot so it may not be an issue down stream of the header. I paint my exhaust system pipes with plain old black spray paint and they dont get hot enough to burn it off.
If you have to have everything where the are right now then I think it's good, but I'm sorry, I think moving either the cooler and/or E-brake to make more room is better for a street vehicle... Otherwise if it's a trailer queen you wouldn't need the wrap...
I hear you and not trying to get in a back and forth. After the build I can look at my truck (and probably your truck), and I would do a few things a little different next time. Here we are talking about an exhaust pipe I could repair for twenty bucks. He spent more than that on tack rags painting his truck.
By the looks of your set up,you may try building a heat shield around your cooler and e-brake system. It will block the heat and assist cooling at the same time. SS would look really good. Good luck.