Flash Posted April 30, 2020 Share Posted April 30, 2020 I was fitting a new seal on the engine cover of the Thames today. It's the first time I've had a chance to get a good look at the underside of the cover. There are signs that some type of heat insulation / sound deadening material has been glued on to the underside of the lid at some stage in the past, but it is long gone with just some remnants of adhesive left. No wonder my elbow gets hot when I use the box cover as an armrest whilst cruising LOL Anyway, I also noticed that there is an inner metal skin that follows the contour of the outer metal skin with a gap of about 25 mm between the two skins. Its factory welded in but there is a small opening between the two skins at the front and back of the lid. Got me thinking about spraying some of that expanding foam into the gap between the two panels. It would need to be high heat resistant, but in my opinion it would be a much better and longer lasting solution than trying to stick something to the surface. Would hopefully provide a bit of sound deadening at the same time. Did a quick google and I see that there are some products available. One is a product called Intek PFI 1120, but I haven't found a lot of info on it. Anyone had any experience with any of these products and can make any recommendations on a particular brand to use ? Any recommendations would be appreciated. Thanks for reading. Quote Link to comment Share on other sites More sharing options...
gibbon Posted April 30, 2020 Share Posted April 30, 2020 How about regular insulation batts? They're fireproof, deaden noise, and would stay in place if theres the inner skin to sandwich them Quote Link to comment Share on other sites More sharing options...
tortron Posted April 30, 2020 Share Posted April 30, 2020 Stick some dynamat type stuff on it and some heat reflective stuff on top 1 Quote Link to comment Share on other sites More sharing options...
AllTorque Posted April 30, 2020 Share Posted April 30, 2020 Can you take a pic? What is the engine? Is it inside the rocker cover? It may be something to stop oil going out the PCV valve. Don’t jam anything in there until you confirm what it is. 1 Quote Link to comment Share on other sites More sharing options...
tortron Posted April 30, 2020 Share Posted April 30, 2020 Just now, AllTorque said: Can you take a pic? What is the engine? Is it inside the rocker cover? It may be something to stop oil going out the PCV valve. Don’t jam anything in there until you confirm what it is. Engine cover on the floor of a van 1 Quote Link to comment Share on other sites More sharing options...
AllTorque Posted April 30, 2020 Share Posted April 30, 2020 Oh, that makes sense. 1 minute ago, tortron said: Stick some dynamat type stuff on it and some heat reflective stuff on top Do this. 1 Quote Link to comment Share on other sites More sharing options...
Flash Posted April 30, 2020 Author Share Posted April 30, 2020 Thanks for the suggestions fellas. I'll take a pic in the light tomorrow as a picture paints a thousand words as they say. Sadly not enough wiggle space to get batts in between the two skins. Yep I could dynamat and heat insulate which is what I did on my Bedford engine box when I built that, but I'd really like to take advantage of the gap between the two skins if I can. Quote Link to comment Share on other sites More sharing options...
Flash Posted April 30, 2020 Author Share Posted April 30, 2020 Here are a few pics of the engine box lid. First pic shows the shape of the cover. Second pic shows the lower opening between the two skins on the underside of the lid. Third and fourth pictures show the upper opening between the two skins. It looks like someone has cut out a corner of the inner skin in the left upper corner for reasons unknown. Reason I'm thinking of using spray foam between the two skins is that it will allow me to get into the hard to reach areas (especially up the sides of the box) even if I have to drill a few extra holes here and there in the inner skin to insert the foam nozzle. I can then patch and clean up the exposed surface of the inner skin with a flapper disk and then stick a layer of the thin heat reflective silver stuff for a super neat look. Quote Link to comment Share on other sites More sharing options...
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