Manifold to cat exhaust leak
#1
#2
I had an exhaust leak there on my Range Rover Classic. Same gasket, they do indeed blow out.
new gaskets are only a few dollars, you’ll probably need new bolts/studs as well. I replaced my studs with bolts due to rust and not an incredibly amount of room for tapping.
The permatex stuff only lasts a few weeks at most, mine lasted all of a few hours in the rain and off-road driving I was doing.
new gaskets are only a few dollars, you’ll probably need new bolts/studs as well. I replaced my studs with bolts due to rust and not an incredibly amount of room for tapping.
The permatex stuff only lasts a few weeks at most, mine lasted all of a few hours in the rain and off-road driving I was doing.
#4
When I put the Magnaflow downpipes and cats on it took more than a few rounds of tightening the bolts to get rid of the leaks. A really cold morning helps. Finally got the those tight and a leak showed up at the Y joint as the included clamp was insufficient. Also had to re-tighten the flange to the muffler pipe as well.
#6
Just an assumption but I don't think most shops have the time to wait until a vehicle is totally cold to work on these sort of things, so knowing thermal expansion and contraction are in play they might have tightened down those bolts with the manifold still warmish. That would mean it would leak when it is actually cold. This is what I think happened with mine when I had my shop do the swap. I had a shop do it because I didn't want to deal with broken studs. It was worth the couple hours they charged me to bring in my own Magnaflow and they did indeed break a couple of studs... They have since started using Magnaflow rather than the higher priced OEMs.
I'd give tightening the bolts a try on a cold morning before you run the engine. Get the exact right socket and be cautious not to round any of the bolts. It worked best for me from underneath with a 12" extension and a deep socket.
I'd give tightening the bolts a try on a cold morning before you run the engine. Get the exact right socket and be cautious not to round any of the bolts. It worked best for me from underneath with a 12" extension and a deep socket.
Last edited by Dave03S; 02-14-2019 at 04:43 PM.
#7
I did the exhaust leak test last week and it turned out that all four pipe connections and the manifold at cylinder #8 were not tight. After soaking the bolts and nuts with liquid wrench for several days I found a lot of lose bolts. 6 out of 8 manifold bolts were lose, one was hand tight only, LOL. That fixed my cylinder #8 leak, but the manifold to Y pipe connections still leak, so I am going to install new gaskets including studs and nuts.
The question: Is it really worth to buy the kit from AB for $50, or is the kit from BPUtah for $26 essentially the same?
https://www.ebay.com/itm/400924140352
https://www.ebay.com/itm/293419697340
The question: Is it really worth to buy the kit from AB for $50, or is the kit from BPUtah for $26 essentially the same?
https://www.ebay.com/itm/400924140352
https://www.ebay.com/itm/293419697340
#8
The question: Is it really worth to buy the kit from AB for $50, or is the kit from BPUtah for $26 essentially the same?
https://www.ebay.com/itm/400924140352
https://www.ebay.com/itm/293419697340
https://www.ebay.com/itm/400924140352
https://www.ebay.com/itm/293419697340
#9