MartinT 514 Report post Posted January 10, 2019 I had to pull over today after a smell of burning and other drivers tooting at me because of smoke coming out the back. Lifted the bonnet to see the smoke coming from the top hose silver wrap which was touching the TD exhaust. I did what I could, twisting the silver wrap on the hose to present a new section and driving home slowly so as not to heat up the exhaust too much. Let the car cool down and went out an hour ago to see why it happened. Looks like the exhaust and top coolant hose are so close that they rubbed together over the last few months, causing the heat wrap on the exhaust to wear away completely, leaving a bald patch of bare exhaust almost touching the top pipe. Not good! I've loosened the top hose clips and twisted it slightly to try to get a gap between the two pipes. I've also ordered some exhaust heat wrap on eBay for delivery tomorrow. I've just got to get the car to work in the morning and do the repair at lunchtime. Has anyone else had this? Any suggestions on what to do other than the obvious re-wrapping the exhaust close to the top hose? Share this post Link to post Share on other sites
Deacon 1357 Report post Posted January 10, 2019 Do you have any pictures of where you mean? Share this post Link to post Share on other sites
Varelco 211 Report post Posted January 10, 2019 It's not the cheapest option but you could have the manifold ceramic coated, I had mine done by performance1 for £282. I'm not a fan of heat wrap. Share this post Link to post Share on other sites
Lauren 2259 Report post Posted January 10, 2019 I have the same setup but mine is not touching and there is no degradation of the coolant hose. Mine have been on for 20K miles +. I don't have any wrap on my coolant hose. Seems odd that yours is touching. Share this post Link to post Share on other sites
Mike 458 Report post Posted January 10, 2019 Upload a picture when you can. The clip holding the wrap on mine rusted itself apart so had the wrap come loose a bit until I replaced the clip Share this post Link to post Share on other sites
MartinT 514 Report post Posted January 10, 2019 I'll take a picture tomorrow. The clearance between coolant hose and exhaust pipe is only a few mm and the bulky wraps around both effectively then touch each other. Perhaps @Mike@TD.co.uk could comment? Share this post Link to post Share on other sites
Fenhopper 22 Report post Posted January 10, 2019 Clearance on mine is approximately two inches. I'm wondering if this is due to differences between the EL and UEL design? *EDIT* This is EL. Share this post Link to post Share on other sites
surrey86 352 Report post Posted January 10, 2019 Sounds like you're at the unlucky end of manufacturing tolerances. The engine can move a fair bit. Share this post Link to post Share on other sites
MartinT 514 Report post Posted January 10, 2019 That's my thinking. It was always close, but the engine moving has worn the heat wrap right through over time. Yes, mine is UEL. Share this post Link to post Share on other sites
surrey86 352 Report post Posted January 10, 2019 I'd contact TD. If your clearance is that close, you won't be the only one. Share this post Link to post Share on other sites
Mike 458 Report post Posted January 10, 2019 Mines quite close, closer than 2 inches, might check it tomorrow! Share this post Link to post Share on other sites
Fenhopper 22 Report post Posted January 10, 2019 These manifolds also sit really close to the crankshaft pulley, which I'm not entirely comfortable with, but I think you have to be willing to accept some compromises when modifying cars. Matt. 1 Angelina reacted to this Share this post Link to post Share on other sites
Fenhopper 22 Report post Posted January 10, 2019 Just a thought @MartinT, if you rotated the coolant hose through 180 degrees so that the bend is going the other way, would that give you any more clearance? *EDIT* Just re-read your post and seen that you've already done that. Matt. Share this post Link to post Share on other sites
MartinT 514 Report post Posted January 11, 2019 8 hours ago, Fenhopper said: These manifolds also sit really close to the crankshaft pulley Very close, I can't believe the small clearance! Share this post Link to post Share on other sites
Mike 458 Report post Posted January 11, 2019 Had a look this morning, probably got about an inch gap on mine. Share this post Link to post Share on other sites
Lauren 2259 Report post Posted January 11, 2019 1 hour ago, Mike said: Had a look this morning, probably got about an inch gap on mine. Mine is similar. They all run close the crankshaft pulley, though this isn't a problem as such. Share this post Link to post Share on other sites
MartinT 514 Report post Posted January 11, 2019 My clearance is virtually zero. You can see the discolouration from the burning. Hopefully the heat wrap will arrive later and I can fix it before driving home. Here is the crank pulley clearance. Pretty damned close! Share this post Link to post Share on other sites
BRZ-123 174 Report post Posted January 11, 2019 3 hours ago, MartinT said: Very close, I can't believe the small clearance! This is also a risk, if you get a bit of a frontal impact. the manifold can bend and impact the pulleys and make it a much more expensive repair than what it would be. Design wise Ace (not up and over) like design does have an advantage and also from a engine bay heat management perspective. Share this post Link to post Share on other sites
Andrew Smith 156 Report post Posted January 11, 2019 Can you rotate the top hose anticlockwise by a few degrees? Might give you a bit more room Share this post Link to post Share on other sites
MartinT 514 Report post Posted January 11, 2019 4 minutes ago, Andrew Smith said: Can you rotate the top hose anticlockwise by a few degrees? Might give you a bit more room I'm going to try that when I do the fix later on. Share this post Link to post Share on other sites
Rich 378 Report post Posted January 11, 2019 Didn't recall mine being that close, so found a pic from when I installed it, plenty of space: Share this post Link to post Share on other sites
MartinT 514 Report post Posted January 11, 2019 Subtle changes in model year, maybe? Or else the engine mount variations mentioned above. Share this post Link to post Share on other sites
Deacon 1357 Report post Posted January 11, 2019 3 minutes ago, MartinT said: Subtle changes in model year, maybe? Or else the engine mount variations mentioned above. Could also be slight differences in the exhausts themselves as they are effectively handmade? Share this post Link to post Share on other sites
Lauren 2259 Report post Posted January 11, 2019 33 minutes ago, MartinT said: Subtle changes in model year, maybe? Or else the engine mount variations mentioned above. No, there is no difference. It will be the slight changes in tolerance from a manifold that though made using a jig will have some variance at JP Exhausts where they make them. Share this post Link to post Share on other sites
BRZ-123 174 Report post Posted January 11, 2019 40 minutes ago, Lauren said: No, there is no difference. It will be the slight changes in tolerance from a manifold that though made using a jig will have some variance at JP Exhausts where they make them. The manifolds and exhausts are no longer made at JP. They are now made in house at TD. Share this post Link to post Share on other sites
