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Thread: JimLev's Build

  1. #241
    Seasoned Citizen NAZ's Avatar
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    That's a nice looking job of insulating the mufflers. From my experience it seems to take a very thick insulator to be effective. Mufflers soak up a lot of heat and the large surface area radiates a ton of heat to the surrounding area. Some times it seems a deflector shield is more effective against radiant heat if you have several inches of free air between the heat source and the part you're trying to protect. It's not likely you have that kind of room between the mufflers and the floorboards -- pipes maybe but likely not the mufflers.

    Perhaps your insulation will work but if not -- can you fit mufflers in the section of pipe between the rear bulkhead and the axle? Might require a different design muffler but if you can accomplish this it will be easier to effectively insulate or shield the section of muffler replacement pipe under the floorboards. And moving the large heat sink (mufflers) to an open area in front of the rear axle will allow the heat to escape where it won't cause you a problem. Or better yet, move them behind the axle if there is room.

    Projects always seems to produce a constant list of problems to solve. Good luck and have fun. Remember, these are just challenges and opportunities.

  2. #242
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    Just for the record, I got my Flowmaster 70 heat shields in today. It's only on the top of muffler and cutting the one shield in half length wise covers both F5 mufflers very nicely. There is about 1/2 in room below alum floor ( not installed yet ) for air to move across it and the two SS bands hold them on very tight,,, Good fit and I must say they look nice. BUT,,, have no idea if they will help the heat issue very much. Worth a try.... AND I must say you did one heck of a job covering your mufflers. Very well done.

  3. #243

    Ol Skool

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    I'm kinda in the shield to deflect camp myself. Hopefully the new floor design will help this issue. I like to put a shiny shield between the heat source and what I am protecting with insulation on the back side of the shield. This allows air flow to move the heat off and away. On a long rear exhaust its my belief that getting the heat out rather than containing it also reduces back pressure. Mass flow and heat transfer thermodynamics support this. I minimize wraps to short tight clearance sections. The other issue with the wraps is corrosion protection. I prefer coatings over wraps when I can get them. A 2.5" pipe will allow the hot gas to expand more than a 2.25" pipe which helps drop the temperature also. So in theory the largest muffler with the most surface facing airflow under the car will run the coolest. I used the floor as the reflector and insulated below it with the DEI tunnel shield and multiple layers above it for both heat and sound. The metallic surface spreads (conducts) the heat out for transfer over a wider area than the top of the muffler your sitting on. Basically your building a heat sink vice a heat containment system and then moving the heat away and diluting it.
    Just my approach. Still sweat in a black car with no A/C anyway

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  5. #244

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    Good info guys.
    Today I let the engine run (45F outside) until the electric fan came on so I'd know the engine was fully warmed up.
    There was no wind, the car just sat in the driveway running. The inner floors above the muffler were a little warm, nothing like before.
    I could actually touch the sides of the mufflers for 3-4 seconds before my fingers got too hot.

    With the 2 layers of insulation on the mufflers there is now about a 1/4" gap between the top of the muffler insulation and the bottom of the floor.
    I did put some paper thin gold foil on the floor a while ago that was suppose to reflect heat which it probably did but it really didn't have anywhere to go except back to the muffler.
    This is the gold foil.
    DSCN2060.JPG

    With a little air flow it should be fine even in the summer with the AC on.
    The exhaust tone/volume didn't change, which was good.

    OnlyAndy, I'm sure yours will help too. Does it have any fiberglass insulation on it or is it just aluminum?

    Erlihemi, my headers (both cars) are ceramic coated which helps contain the heat. I'm not worried about corrosion the exhaust and mufflers are stainless.
    '33 Hotrod, delivered on 2/27/18, go cart on 9/24/18.
    LS3 w/4L65e, Lokar shifter, Electric PS, Vintage AC/Heat/Def, 8.8" 3.55
    TorqThrust II Wheels w/Toyo Proxy T1 Sport Tires, F 245/45ZR17 R 295/35ZR18

  6. #245
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    Jim, Do you have a picture of how your shift cable bracket mounted to the transmission?
    33 Hot Rod Stage 1 delivered on 4/27/2017, Stage 2 delivered on 9/21/2018
    LS3 376/480, 4L70E, Electric PS, Classic Auto Air, Lokar electronic sport shifter,
    Ford 8.8 w 3.73 w 4 link, Billet Specialty Legend Series MAG wheels and Mickey Thompson
    Sportsman S/R 26x8x18 front and 29x18x20 rear tires

  7. #246

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    Quote Originally Posted by HVACMAN View Post
    Jim, Do you have a picture of how your shift cable bracket mounted to the transmission?
    Andy, I think this is what you are asking for. Let me know if it's something else.
    I used some longer bolts and washers (at the shifter) to space the cable a little close to the drivers side to get it further away from the driveshaft.

    Dscn2199a.jpg
    Last edited by JimLev; 12-02-2018 at 09:51 AM.
    '33 Hotrod, delivered on 2/27/18, go cart on 9/24/18.
    LS3 w/4L65e, Lokar shifter, Electric PS, Vintage AC/Heat/Def, 8.8" 3.55
    TorqThrust II Wheels w/Toyo Proxy T1 Sport Tires, F 245/45ZR17 R 295/35ZR18

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  9. #247
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    Quote Originally Posted by JimLev View Post
    Andy, I think this is what you are asking for. Let me know if it's something else.
    I used some longer bolts and washers to space the cable a little close to the drivers side to get it further away from the driveshaft.

    Dscn2199a.jpg
    Thanks Jim. That is exactly what I needed to see. IMG_1316.jpg As you can see the bracket that attaches the shift cable to the transmission pan is reversed from yours. When I turned it so that the mounting holes face forward the cable is on the wrong side.
    33 Hot Rod Stage 1 delivered on 4/27/2017, Stage 2 delivered on 9/21/2018
    LS3 376/480, 4L70E, Electric PS, Classic Auto Air, Lokar electronic sport shifter,
    Ford 8.8 w 3.73 w 4 link, Billet Specialty Legend Series MAG wheels and Mickey Thompson
    Sportsman S/R 26x8x18 front and 29x18x20 rear tires

  10. #248

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    Andy, the slotted holes on the first cable shift bracket they sent were to narrow for the bolts to fit thru.
    '33 Hotrod, delivered on 2/27/18, go cart on 9/24/18.
    LS3 w/4L65e, Lokar shifter, Electric PS, Vintage AC/Heat/Def, 8.8" 3.55
    TorqThrust II Wheels w/Toyo Proxy T1 Sport Tires, F 245/45ZR17 R 295/35ZR18

  11. #249
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    Did they send you a replacement? If so do you have a part number by chance?
    33 Hot Rod Stage 1 delivered on 4/27/2017, Stage 2 delivered on 9/21/2018
    LS3 376/480, 4L70E, Electric PS, Classic Auto Air, Lokar electronic sport shifter,
    Ford 8.8 w 3.73 w 4 link, Billet Specialty Legend Series MAG wheels and Mickey Thompson
    Sportsman S/R 26x8x18 front and 29x18x20 rear tires

  12. #250

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    Quote Originally Posted by HVACMAN View Post
    Did they send you a replacement? If so do you have a part number by chance?
    Yes, they sent me the correct one, pretty sure I called Kokar directly and not Jeg's where I bought the shifter from.
    The p/n is 68182P, description is Zinc Cable Operated Lower Mounting Bracket.
    Last edited by JimLev; 12-02-2018 at 09:53 AM.
    '33 Hotrod, delivered on 2/27/18, go cart on 9/24/18.
    LS3 w/4L65e, Lokar shifter, Electric PS, Vintage AC/Heat/Def, 8.8" 3.55
    TorqThrust II Wheels w/Toyo Proxy T1 Sport Tires, F 245/45ZR17 R 295/35ZR18

  13. Thanks HVACMAN thanked for this post
  14. #251
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    Quote Originally Posted by JimLev View Post
    Yes, they sent me the correct one, pretty sure I called Kokar directly and not Jeg's where I bought the shifter from.
    The p/n is 68182P, description is Zinc Cable Operated Lower Mounting Bracket.
    Thanks Jim. That's awesome. I will call them tomorrow.
    33 Hot Rod Stage 1 delivered on 4/27/2017, Stage 2 delivered on 9/21/2018
    LS3 376/480, 4L70E, Electric PS, Classic Auto Air, Lokar electronic sport shifter,
    Ford 8.8 w 3.73 w 4 link, Billet Specialty Legend Series MAG wheels and Mickey Thompson
    Sportsman S/R 26x8x18 front and 29x18x20 rear tires

  15. #252
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    Quote Originally Posted by JimLev View Post
    Yes, they sent me the correct one, pretty sure I called Kokar directly and not Jeg's where I bought the shifter from.
    The p/n is 68182P, description is Zinc Cable Operated Lower Mounting Bracket.
    Thanks again for the information Jim. I talked to Travis at Lokar this morning and the correct bracket is on the way. He said the first production run of these shifters contained the wrong bracket. I think our's were some of the first manufactured.
    33 Hot Rod Stage 1 delivered on 4/27/2017, Stage 2 delivered on 9/21/2018
    LS3 376/480, 4L70E, Electric PS, Classic Auto Air, Lokar electronic sport shifter,
    Ford 8.8 w 3.73 w 4 link, Billet Specialty Legend Series MAG wheels and Mickey Thompson
    Sportsman S/R 26x8x18 front and 29x18x20 rear tires

  16. #253

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    Excellent Andy. I almost threw out the paperwork that came with the bracket, glad I saved it.
    '33 Hotrod, delivered on 2/27/18, go cart on 9/24/18.
    LS3 w/4L65e, Lokar shifter, Electric PS, Vintage AC/Heat/Def, 8.8" 3.55
    TorqThrust II Wheels w/Toyo Proxy T1 Sport Tires, F 245/45ZR17 R 295/35ZR18

  17. Likes HVACMAN liked this post
  18. #254
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    This came in by UPS yesterday. IMG_1318.JPG Thanks again Jim.
    33 Hot Rod Stage 1 delivered on 4/27/2017, Stage 2 delivered on 9/21/2018
    LS3 376/480, 4L70E, Electric PS, Classic Auto Air, Lokar electronic sport shifter,
    Ford 8.8 w 3.73 w 4 link, Billet Specialty Legend Series MAG wheels and Mickey Thompson
    Sportsman S/R 26x8x18 front and 29x18x20 rear tires

  19. #255

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    No problem, glad I could help out.
    IIRC the slot to fit the tranny pan bolts thru was a little on the tight side. Pretty sure I took a file or angle grinder to open it up a tad.
    '33 Hotrod, delivered on 2/27/18, go cart on 9/24/18.
    LS3 w/4L65e, Lokar shifter, Electric PS, Vintage AC/Heat/Def, 8.8" 3.55
    TorqThrust II Wheels w/Toyo Proxy T1 Sport Tires, F 245/45ZR17 R 295/35ZR18

  20. Likes HVACMAN liked this post
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