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#1
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Deleted my rear muffler...
At some point in my 740td's history, a Bosal muffler was installed on the back of the car. I'm pretty sure this is a muffler for a gasoline car; it's quite restrictive. Last week, the spout on the back of the muffler- which was quite rusty to begin with- fell off. So I cut the exhaust pipe just before the muffler and welded a straight pipe to the back of the car.
[ATTACH=CONFIG]334[/ATTACH][ATTACH=CONFIG]335[/ATTACH] This only took a few minutes and I'm really happy with the results. The center muffler is still there, so the noise is really no higher than it was before at idle or at cruising RPM's. But around 2500rpm, it has a much deeper, more throaty sound. In addition, it seems like there's less backpressure on the engine- I can coast so much farther now. I also fixed a leaky vent line on the fuel filler which was causing diesel to spill in large quantities every time I filled up. And I replaced the heat shield on the #1 injector, which was leaking pretty badly as it was only finger-tight! Despite having all of these issues, I averaged 25.4 mpg on B10 with city traffic and a heavy foot. I can't wait to fill up again because I can only imagine it improving with these repairs...
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1985 Volvo 740TD- 216k and a whole garage full of non-Volvo Diesel cars Visit my blog! |
#2
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I did the same with my 240, they sound good with one muffler.
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12mm pump heads, ARP stud kits and GTD nozzles available! http://d24t.com/showthread.php?t=1646 NA intake manifolds and 240 turbo pans for sale. Need d24 or d24t parts? PM me! Shipments done on fridays! 1982 242 D24+T/M46- Super pumped! Build thread: http://www.d24t.com/showthread.php?t=1545 1984 764 D24T/ZF build thread: http://www.d24t.com/showthread.php?t=1734 Diesel parts cars: 82 244,83 244, 84 244, 84 245, 85 745 |
#3
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And apparently it does more than sound good! I filled up today- 29.8mpg, and that's city mileage with an auto trans and leaky return lines. Impressive.
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1985 Volvo 740TD- 216k and a whole garage full of non-Volvo Diesel cars Visit my blog! |
#4
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Need a sound teaser asap !
I'm looking for a "sporty" muffler but if it works good without.....
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[SIGPIC][/SIGPIC] |
#5
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That's what I did with mine aswell. Just took rear box off and replaced with straight 2 and 1/4" pipe, slash cut. Bit more burble at idle and quite a nice but reasonable exhaust note. Been thinking I need to get a video of it soon....
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1990 Volvo 765 D24Tic (factory UK spec Tic). Monark 273 nozzles 163bar, Ajusa MLS gasket, 16psi, Water Injection, 17" Titans with 25mm H&R spacers, running 85% WVO/SVO. http://i103.photobucket.com/albums/m...AG0269-sig.jpg |
#6
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Video?
I thought of getting off or replacing the mufflers. I think they are rusted and clogged |
#7
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Quote:
I prefer stock sounds but also prefer no restrictions due to wrong "new" setup or a clogged rustbucket old muffler with second muffler cut off. I just need to get the closest one to stock possible. Currently i have two mufflers on the car. The entire piping is very rusty btw too. Link me to the mufflers pls! |
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