Exhaust Heat Shield - What alternatives?

Discussion in 'Mech Tech' started by Byron Bamboo, Sep 5, 2017.

  1. We've fired up our 2.0L type 4 motor and it's started to melt the foam engine seal, guess we can't get away with not having a heat shield on the exhaust.

    Just seen Heritage do them for £110

    What have other people done? To achieve the same results? i.e. Not melting the seal!

    Cheers

    Deano


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  2. davidoft

    davidoft Sponsor

    How long have you had it running, they don't generally melt the seals
     
  3. Someone had one for sale on here last week. Look in the for sale section


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  4. Been running for 15 mins or so. No movement of the bus.

    It's only a few drops of the seal not disintegrated it.

    The whole engine needs a tune up so may be running hot for various reasons.


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  5. Defo something up if its melting the seal !
     
    mgbman likes this.
  6. mikedjames

    mikedjames Supporter

    Were you running it beside a wall so it sucked back in hot air ? Melting stuff is extreme and a heat shield will not help if its that hot around the engine .

    Or is this another one of those too-hot mystery T4 rebuilds where it heats up amazingly idling in a field when it should barely be warming up ...
     
  7. WHS It shouldn't get that hot ! Hopefully just a tune up issue

    Made a heat sheild for mine from ally. sheet, seems to work well although plenty run without one. Standard one wouldn't fit with my vintage speed hence making one, personally think it reduces heat rising into cooling fan area which has to be a good thing, plus difficult to see in photo but managed to fold a piece down between exhaust and oil fill tube as there is some thinking that the exhaust can heat the oil in this area
    P1100811.JPG
     
  8. I know for sure it doesn't have all the under tinware on yet (another job!) so engine won't be throwing hot air away from the engine just recycling the hot air.


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  9. nice!
     
  10. I've used a aluminium reflector from a strip light , pushed in the thin gap below the engine lid housing, so it sits above the silencer Seems to do the trick . But no scene tax.
     
    Pudelwagen likes this.
  11. ^^^
    whs..
     
  12. GARRICK CLARK

    GARRICK CLARK Sponsor

    I don't fit those heat shields because of the price, never had a seal melt. stainless headers do radiate a lot of heat. Much more than mild steel ones.
    Check your thermostat is working
     
  13. No thermostat fitted at present (another job) but would that just prolong the heat coming through?

    All stock mild steel exhaust, also its new so heat of engine is burning the paint off.

    Key for us is to make sure then engine is not a melon before doing lots of other jobs and wasting time and money on something that might get swapped later.


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  14. GARRICK CLARK

    GARRICK CLARK Sponsor

    Ok ,so you have no thermostat fitted, To check air is circulating around your tin ware, Remove the piece of tin that hides the thermostat. Start the engine. Warm it up . Place your hand were the plate that you removed was. AIR should blow onto your hand. Air flow gets stronger as Someone (not you) increases the revs . If you feel no air on your hand, the flaps are in the closed position. The engine will get HOT.
     
  15. Were you refering to mine there??? :)

     

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