MR2 Roadster Owners Club

The Workshop => Maintenance, Problems & Troubleshooting => Topic started by: BahnStormer on November 12, 2024, 12:46

Title: Lower exhaust heat shield now off!
Post by: BahnStormer on November 12, 2024, 12:46
My lower exhaust heat shield was all over the place: the rear bolts were both gone and it was just sliding up and down around the exhaust and bouncing and rattling all over the place.

I have now removed it, but how urgently does it need to be replaced and what are people's recommendations?
Title: Re: Lower exhaust heat shield now off!
Post by: Iain on November 12, 2024, 12:50
If it doesnt bother you just leave it, will be fine without it.
Title: Re: Lower exhaust heat shield now off!
Post by: BahnStormer on November 12, 2024, 12:55
Quote from: Iain on November 12, 2024, 12:50If it doesnt bother you just leave it, will be fine without it.

Thanks - I was worried about it accelerating wear on the rear subframe, other than that, I'm just happy that it no longer sounds like I'm dragging a metal bucket of bolts behind the car!
Title: Re: Lower exhaust heat shield now off!
Post by: Iain on November 12, 2024, 12:59
Quote from: BahnStormer on November 12, 2024, 12:55Thanks - I was worried about it accelerating wear on the rear subframe, other than that, I'm just happy that it no longer sounds like I'm dragging a metal bucket of bolts behind the car!

Easiest thing to do if it does worry you is get some exhaust heat wrap round it. But i doubt it'll cause any issues like it is
Title: Re: Lower exhaust heat shield now off!
Post by: BahnStormer on November 12, 2024, 13:11
Quote from: Iain on November 12, 2024, 12:59if it does worry you is get some exhaust heat wrap round it

I was considering that... I think I'll aim to do that next weekend if it isn't raining.... it'll be a PITA to do on the car, but possibly worth it in the long run.
Title: Re: Lower exhaust heat shield now off!
Post by: Ardent on November 12, 2024, 20:03
Assuming it fell apart in the end due to rusty fixings disintegrating. Clean up, bolt back together with some new stainless nuts n bolts.
Do you still have the semi circle spacers or have they been lost along the way?
Title: Re: Lower exhaust heat shield now off!
Post by: Joesson on November 12, 2024, 20:27
As @Ardent says.
I did mine some years ago when I removed the pre cats, when that was the thing to do. My heat shields, top and bottom cleaned up very well with a powered wire brush and matched the new stainless fixings.
Title: Re: Lower exhaust heat shield now off!
Post by: Ardent on November 12, 2024, 22:58
Still baffles me now. High quality stainless steel heat shields that are tickety boo condition 20 + years later held together by the cheapest nastiest tin worm ridden fixings. Go figure.
Title: Re: Lower exhaust heat shield now off!
Post by: BahnStormer on December 2, 2024, 20:14
The bolts and fixings had almost all gone.... I've got the wrap (same stuff I used on the Toyosport manifold), just need an afternoon when it's not p!ssing with rain.
Title: Re: Lower exhaust heat shield now off!
Post by: Beachbum957 on December 2, 2024, 20:46
The welds broke on our Y pipe shield many years ago, and it was removed.  We don't use any wrap - no issues.