Motor Mounts and Heat Wrap? [Forums - C4 Technical]

C4 Technical > Motor Mounts and Heat Wrap?
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biggrizzly	Motor Mounts and Heat Wrap?	#1
2011 Memorial Day Car Show Winner! Chesapeake Beach, Maryland 4543 Posts Member since: 2006/4/23 0:00	My motor mount heat wrapping is trashed! Worn away, torn away, sopped with oil and grease. Have any of you replaced the foil heat wrap successfully and where can you buy that. Is it a replaceable GM part?
	Posted on: 2010/11/9 1:31
	_________________ Don Haller Corvette Club of America 94Coupe, 383Stroka, PeteK Trans, 3000stall, 3.54rear, Konis and bigger sways.
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bogus	Re: Motor Mounts and Heat Wrap?	#2
Grand Imperial Pooh-Bah San Pedro, CA 20859 Posts Member since: 2005/9/7 0:00	The parts fiche does not show the wrap as being a separate part. I know you can make one with a heavy duty stapler and some exhaust wrap... I have a spare set, but they are going in soon... I suspect that by 175k miles, the OE ones are about done.
	Posted on: 2010/11/9 1:45
	_________________ The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me
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BillH	Re: Motor Mounts and Heat Wrap?	#3
The Stig Moderator Reno 22702 Posts Member since: 2007/12/25 0:00	Just get the DEI starter shield from Summit, cut in half amd you'll have enough for both mounts. It has more insulation than exhaust wrap. They also have metal ty-raps but, I don't know id they are long enough.
	Posted on: 2010/11/9 2:38
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biggrizzly	Re: Motor Mounts and Heat Wrap?	#4
2011 Memorial Day Car Show Winner! Chesapeake Beach, Maryland 4543 Posts Member since: 2006/4/23 0:00	Quote: bogus wrote: The parts fiche does not show the wrap as being a separate part. I know you can make one with a heavy duty stapler and some exhaust wrap... I have a spare set, but they are going in soon... I suspect that by 175k miles, the OE ones are about done. Does that mean the motor mount too?
	Posted on: 2010/11/9 4:04
	_________________ Don Haller Corvette Club of America 94Coupe, 383Stroka, PeteK Trans, 3000stall, 3.54rear, Konis and bigger sways.
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bogus	Re: Motor Mounts and Heat Wrap?	#5
Grand Imperial Pooh-Bah San Pedro, CA 20859 Posts Member since: 2005/9/7 0:00	yea... the mount itself. I have no idea what its lifespan is, but 175k seems reasonable!
	Posted on: 2010/11/9 5:08
	_________________ The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me
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pianoguy	Re: Motor Mounts and Heat Wrap?	#6
Guru Emeritus Apple Valley, MN 14762 Posts Member since: 2007/12/29 0:00	I got my material on e-bay, but the Summit stuff would be fine, I'm sure. I didn't replace the mounts themselves, but I'd have to believe they're available somewhere.
	Posted on: 2010/11/9 11:36
	_________________ 1996 LT4 �Before you criticize someone, you should walk a mile in their shoes. That way when you criticize them, you are a mile away from them and you have their shoes.�- Jack Handey
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Matatk	Re: Motor Mounts and Heat Wrap?	#7
Webmaster SW Chicago Burbs 22805 Posts Member since: 2008/1/7 0:00	I remember reading about using the motor mounts off a mid 90s truck - something about them being solid and not allowing the motor to torque as much....can't remember if it was for l98s or lt1s, I'll look into it later. Matthew
	Posted on: 2010/11/9 12:35
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biggrizzly	Re: Motor Mounts and Heat Wrap?	#8
2011 Memorial Day Car Show Winner! Chesapeake Beach, Maryland 4543 Posts Member since: 2006/4/23 0:00	Quote: pianoguy wrote: I got my material on e-bay, but the Summit stuff would be fine, I'm sure. I didn't replace the mounts themselves, but I'd have to believe they're available somewhere. Brad, What did you use to staple the material? or did you use something else to fasten it?
	Posted on: 2010/11/9 13:56
	_________________ Don Haller Corvette Club of America 94Coupe, 383Stroka, PeteK Trans, 3000stall, 3.54rear, Konis and bigger sways.
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BillH	Re: Motor Mounts and Heat Wrap?	#9
The Stig Moderator Reno 22702 Posts Member since: 2007/12/25 0:00	Quote: biggrizzly wrote: Quote: pianoguy wrote: I got my material on e-bay, but the Summit stuff would be fine, I'm sure. I didn't replace the mounts themselves, but I'd have to believe they're available somewhere. Brad, What did you use to staple the material? or did you use something else to fasten it? I took one of mine off. I put it back on using stainless steel safety (aircraft) wire. I did have to make a couple new holes with an awl. But, I have that wire and safety wire plyers in my box because of the racecars.
	Posted on: 2010/11/9 14:01
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pianoguy	Re: Motor Mounts and Heat Wrap?	#10
Guru Emeritus Apple Valley, MN 14762 Posts Member since: 2007/12/29 0:00	I used a heavy-duty stapler around the hem.
	Posted on: 2010/11/9 14:07
	_________________ 1996 LT4 �Before you criticize someone, you should walk a mile in their shoes. That way when you criticize them, you are a mile away from them and you have their shoes.�- Jack Handey
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pr0zac	Re: Motor Mounts and Heat Wrap?	#11
Elite Guru Pittsburgh 1045 Posts Member since: 2008/10/20 23:28	Quote: Matatk wrote: I remember reading about using the motor mounts off a mid 90s truck - something about them being solid and not allowing the motor to torque as much....can't remember if it was for l98s or lt1s, I'll look into it later. Matthew lt1s use totally different mounts. this is a pic of an lt1 mount upsidedown from autozone.. looks like the solid version. no mention of the covers. i dont have the covers on my car.. i don't think that their presence is critical.
	Posted on: 2010/11/9 23:03

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Steve40th	Re: Motor Mounts and Heat Wrap?	#12
Elite Guru 1114 Posts Member since: 2005/12/20 0:00	Quote: pr0zac wrote: Quote: Matatk wrote: I remember reading about using the motor mounts off a mid 90s truck - something about them being solid and not allowing the motor to torque as much....can't remember if it was for l98s or lt1s, I'll look into it later. Matthew lt1s use totally different mounts. this is a pic of an lt1 mount upsidedown from autozone.. looks like the solid version. no mention of the covers. i dont have the covers on my car.. i don't think that their presence is critical. I havent had mine for a couple years. I may wrap them with the DEI material or something laying around in the shipyard, LOL./
	Posted on: 2010/11/10 1:48
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vis_croceus	Re: Motor Mounts and Heat Wrap?	#13
Senior Guru VA 260 Posts Member since: 2007/12/30 0:00	Quote: biggrizzly wrote: My motor mount heat wrapping is trashed! Worn away, torn away, sopped with oil and grease. Have any of you replaced the foil heat wrap successfully and where can you buy that. Is it a replaceable GM part? I wrapped my mounts (bracket and all) with tape like this: http://www.designengineering.com/cate ... ating-materials/cool-tape Not many miles on it, so can't speak to long term durability. My original heat blankets were in good enough shape, but a major PITA to get on/off, plus I just don't like the idea of using something absorbent in an exterior application like that...
	Posted on: 2010/11/10 2:48
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vis_croceus	Re: Motor Mounts and Heat Wrap?	#14
Senior Guru VA 260 Posts Member since: 2007/12/30 0:00	While we're on the topic, those of you with original mounts on your LT1 need to inspect them. I replaced mine last summer while doing a bunch of other work. Had suspected sagging for years, and not only were they both saggy but one was split.
	Posted on: 2010/11/10 2:50
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Steve40th	Re: Motor Mounts and Heat Wrap?	#15
Elite Guru 1114 Posts Member since: 2005/12/20 0:00	How hot do the motor mounts get? I need to throw my thermo tek ray gun at her while she is a running.
	Posted on: 2010/11/10 4:19
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flyboy	Re: Motor Mounts and Heat Wrap?	#16
Elite Guru Westmont, Il. 2632 Posts Member since: 2008/9/28 12:47	Is this heat wrap an LT1 thing?
	Posted on: 2010/11/10 13:38
	_________________ '91coupe, LT4Hotcam, some other stuff. If it's too loud, you're too old. "He works on old cars, then junks 'em"
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pianoguy	Re: Motor Mounts and Heat Wrap?	#17
Guru Emeritus Apple Valley, MN 14762 Posts Member since: 2007/12/29 0:00	Quote: flyboy wrote: Is this heat wrap an LT1 thing? Yessir.
	Posted on: 2010/11/10 13:39
	_________________ 1996 LT4 �Before you criticize someone, you should walk a mile in their shoes. That way when you criticize them, you are a mile away from them and you have their shoes.�- Jack Handey
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HAWAIIZR-1	Re: Motor Mounts and Heat Wrap?	#18
Guru Newb 7 Posts Member since: 2008/12/19 21:57	The LT5s have the same deal and here is what I did for mine: http://www.zr1.net/forum/showthread.php?t=12404
	Posted on: 2010/11/21 6:49

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bogus	Re: Motor Mounts and Heat Wrap?	#19
Grand Imperial Pooh-Bah San Pedro, CA 20859 Posts Member since: 2005/9/7 0:00	hey, Hawaii! Welcome! That is one REAL clean fix!! Looks AWESOME!!!
	Posted on: 2010/11/21 7:03
	_________________ The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me
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PLRX	Re: Motor Mounts and Heat Wrap?	#20
Senior Guru SoCal 212 Posts Member since: 2009/11/24 5:57	Quote: pianoguy wrote: I got my material on e-bay, but the Summit stuff would be fine, I'm sure. I didn't replace the mounts themselves, but I'd have to believe they're available somewhere. This is what I did for my rebuild and worked great!! Ensure you keep the old ones handy, you have to follow the folding for it to fit back on place.
	Posted on: 2010/11/21 7:11

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Steve40th	Re: Motor Mounts and Heat Wrap?	#21
Elite Guru 1114 Posts Member since: 2005/12/20 0:00	When I get back to Pearl, I will do a heat test to see how hot the engine mounts get. I have headers, so I think the temp goes down, as the cast irons retained lots of heat/
	Posted on: 2010/11/21 7:12
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HAWAIIZR-1	Re: Motor Mounts and Heat Wrap?	#22
Guru Newb 7 Posts Member since: 2008/12/19 21:57	Thanks for the comment and welcome.
	Posted on: 2010/11/21 7:17

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bogus	Re: Motor Mounts and Heat Wrap?	#23
Grand Imperial Pooh-Bah San Pedro, CA 20859 Posts Member since: 2005/9/7 0:00	Steve, Headers let out a ton of heat, tho... the cast iron may hold it, and that may mean the mounts don't get as soaked.
	Posted on: 2010/11/21 7:35
	_________________ The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me
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Steve40th	Re: Motor Mounts and Heat Wrap?	#24
Elite Guru 1114 Posts Member since: 2005/12/20 0:00	Quote: bogus wrote: Steve, Headers let out a ton of heat, tho... the cast iron may hold it, and that may mean the mounts don't get as soaked. I am with ya. Maybe I need to see with the heat gun after driving for some time, then see if anyone can check a stock vehicle to see any difference. Its funny how GM never wrapped the motor mounts before. I wonder if the L98/LT1 Corvette engine bays have something to do with it. I will look into that DEI stuff, looks good.
	Posted on: 2010/11/21 7:40
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blr33439	Re: Motor Mounts and Heat Wrap?	#25
Guru Newb 9 Posts Member since: 2010/10/2 0:23	Are your headers wrapped or ceramic coated. Since they are a primary source of under hood heat, it seems as if taking care of the source would drastically reduce the need for motor mount heat wrap. Just a thought.
	Posted on: 2010/11/21 12:35

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Steve40th	Re: Motor Mounts and Heat Wrap?	#26
Elite Guru 1114 Posts Member since: 2005/12/20 0:00	Here is a good shot of how close the headers are to the motor mount. And I dont have these, the plates protecting the knock sensors. This must be a 94-96 vette. Attach file: IMG_1067-1.jpg (252.02 KB)
	Posted on: 2010/11/22 10:40
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BillH	Re: Motor Mounts and Heat Wrap?	#27
The Stig Moderator Reno 22702 Posts Member since: 2007/12/25 0:00	Quote: Steve40th wrote: And I dont have these, the plates protecting the knock sensors. This must be a 94-96 vette. I think all LT1's had them Steve, my 92 does. I can do the heat check on a stock car but I'm not willing to pull the wraps.
	Posted on: 2010/11/22 14:10
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Steve40th	Re: Motor Mounts and Heat Wrap?	#28
Elite Guru 1114 Posts Member since: 2005/12/20 0:00	Quote: BillH wrote: Quote: Steve40th wrote: And I dont have these, the plates protecting the knock sensors. This must be a 94-96 vette. I think all LT1's had them Steve, my 92 does. I can do the heat check on a stock car but I'm not willing to pull the wraps. My engine is a 96 inside my 93. It was a rebuilt MorePerformance engine etc etc. I think the Knock Sensor covers were removed a while back. Interesting. If you check your heat, let us know. I will be hom within two days, and will check my temperature of the mounts.
	Posted on: 2010/11/22 18:17
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Steve40th	Re: Motor Mounts and Heat Wrap?	#29
Elite Guru 1114 Posts Member since: 2005/12/20 0:00	Temps with AC on after running down the highway, oil temps 220, coolant 205. 210 was the highest temp it showed with my thermotec laser temp gun. I then revved it up for a minute straight at 2200-2500rpm, and it was 210 again. That was the hottest temp from above and at the point where the headers were the closest to the motor mount.
	Posted on: 2010/11/26 1:11
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BillH	Re: Motor Mounts and Heat Wrap?	#30
The Stig Moderator Reno 22702 Posts Member since: 2007/12/25 0:00	Quote: Steve40th wrote: Temps with AC on after running down the highway, oil temps 220, coolant 205. 210 was the highest temp it showed with my thermotec laser temp gun. I then revved it up for a minute straight at 2200-2500rpm, and it was 210 again. That was the hottest temp from above and at the point where the headers were the closest to the motor mount. You shooting the gun from inside the engine bay or under the car?
	Posted on: 2010/11/26 14:43
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Steve40th	Re: Motor Mounts and Heat Wrap?	#31
Elite Guru 1114 Posts Member since: 2005/12/20 0:00	Quote: BillH wrote: Quote: Steve40th wrote: Temps with AC on after running down the highway, oil temps 220, coolant 205. 210 was the highest temp it showed with my thermotec laser temp gun. I then revved it up for a minute straight at 2200-2500rpm, and it was 210 again. That was the hottest temp from above and at the point where the headers were the closest to the motor mount. You shooting the gun from inside the engine bay or under the car? Inside teh engine bay right above the #4 plug wire and #3. I am holding it till it blinks with a good number.
	Posted on: 2010/11/26 16:25
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BillH	Re: Motor Mounts and Heat Wrap?	#32
The Stig Moderator Reno 22702 Posts Member since: 2007/12/25 0:00	I got a slight problem getting the car out right now, snowplow put a bearm at the end of the drive and it's frozen, would bottom out the car. It might melt in the next 2 days.
	Posted on: 2010/11/26 16:33
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Steve40th	Re: Motor Mounts and Heat Wrap?	#33
Elite Guru 1114 Posts Member since: 2005/12/20 0:00	Quote: BillH wrote: I got a slight problem getting the car out right now, snowplow put a bearm at the end of the drive and it's frozen, would bottom out the car. It might melt in the next 2 days. No worries. I was looking at the headers and they come real close to the bushings on the upper control arm on the passenger side. I wrapped that a long time ago to keep the one closest to the passenger away from the header heat after doing poly bushings. Also, I wrapped the brake booster, as I remember Guldstrand kept cracking them , as I have too, after the #7 header tube is real close to the booster. I remember it being around 200 degrees difference due to the barrier I put on the booster. So, maybe wrapping the motor mounts is a good idea due the heat affecting the rubber over time.
	Posted on: 2010/11/26 17:02
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BillH	Re: Motor Mounts and Heat Wrap?	#34
The Stig Moderator Reno 22702 Posts Member since: 2007/12/25 0:00	Quote: Steve40th wrote: So, maybe wrapping the motor mounts is a good idea due the heat affecting the rubber over time. GM sure as hell wouldn't have done it if they could have saved a nickel. They should have wrapped the ECM.
	Posted on: 2010/11/26 17:07
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Steve40th	Re: Motor Mounts and Heat Wrap?	#35
Elite Guru 1114 Posts Member since: 2005/12/20 0:00	Quote: BillH wrote: Quote: Steve40th wrote: So, maybe wrapping the motor mounts is a good idea due the heat affecting the rubber over time. GM sure as hell wouldn't have done it if they could have saved a nickel. They should have wrapped the ECM. yes, they are cheap most of the time
	Posted on: 2010/11/26 17:12
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BillH	Re: Motor Mounts and Heat Wrap?	#36
The Stig Moderator Reno 22702 Posts Member since: 2007/12/25 0:00	Ok stock setup but the ambient was only 54* 204 water/ 214 oil Shooting right on the wrap, 145 drivers, 168 pass. So, I don't know how conclusive it is. I don't think the slightly shiny/ slightly dirty wrap skewed things too much.
	Posted on: 2010/12/4 0:30
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Steve40th	Re: Motor Mounts and Heat Wrap?	#37
Elite Guru 1114 Posts Member since: 2005/12/20 0:00	After doing a header install, I am going to get some of that DEi stuff and wrap them. Anything is better than nothing. Steve
	Posted on: 2010/12/4 0:42
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biggrizzly	Re: Motor Mounts and Heat Wrap?	#38
2011 Memorial Day Car Show Winner! Chesapeake Beach, Maryland 4543 Posts Member since: 2006/4/23 0:00	Adding to this thread. I started another thread today, that I shouldn't have. Anyhow here is some additions to the preceeding information. I removed the old crusty heat wrap to find a broken rubber mount on one of mine today. But also wanted to show the finished product of the re-wrap project. I used DEI heat shield fabric. This is a woven fiberglass mat with a reflective heat coating on one side. This is not the thin self-adhesive sheeting. I created a pattern from the old fabric once removed and transferred it to the new materials. I then cut out the correct size and shape. The edges on the factory cover were hemmed. I used contact cement to fold over one inch of material on all sides to create the hem. I then removed the old thick fiberglass matting pad from the old fabric and bonded that to my cut our piece of fabric shielding. I used DEI high temp spray-on contact cement for this job as it was a lot easier to cover a larger area with the spray. Then using the original cover as a model I folded the corners creating the container shape for the motor mount to sit in. I stapled the folds using 1/2 galvanized staples. I would have used stainless steel but I could find any. I'll see how these do. Then I took a length of DEI heat shield tape and wrapped around the whole mount just for some added insurance. It turned out pretty good. Here are some shots - one of the broken mount and another of the completed job. Attach file: mm003.jpg (38.09 KB) mm002.jpg (90.96 KB)
	Posted on: 2011/3/12 21:56
	_________________ Don Haller Corvette Club of America 94Coupe, 383Stroka, PeteK Trans, 3000stall, 3.54rear, Konis and bigger sways.
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pianoguy	Re: Motor Mounts and Heat Wrap?	#39
Guru Emeritus Apple Valley, MN 14762 Posts Member since: 2007/12/29 0:00	Nicely done, Don! Good thing you took on that project - would've been a shame to put your newly-redone engine on a bad mount!
	Posted on: 2011/3/12 22:27
	_________________ 1996 LT4 �Before you criticize someone, you should walk a mile in their shoes. That way when you criticize them, you are a mile away from them and you have their shoes.�- Jack Handey
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Matatk	Re: Motor Mounts and Heat Wrap?	#40
Webmaster SW Chicago Burbs 22805 Posts Member since: 2008/1/7 0:00	They look brand new, Don! Good thing you caught that before the motor went in. Matthew
	Posted on: 2011/3/13 2:40
	_________________ 2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP
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