How loud is straight pipe sound from in cab

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Re: How loud is straight pipe sound from in cab

Postby spencerdiesel » Sun Jun 26, 2016 8:43 am

Will a full 4" system clear everything without too much headache?
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

Fuel: THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw bottomed @ 3 turns, timing bumped 3/16"
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Re: How loud is straight pipe sound from in cab

Postby ofelas » Sun Jun 26, 2016 8:52 am

Yes.
R12 = liquid bilit
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Re: How loud is straight pipe sound from in cab

Postby RCCUMMINS89 » Sun Jun 26, 2016 12:48 pm

spencerdiesel wrote:Will a full 4" system clear everything without too much headache?



"too much headache" depends on the truck and the installer. To explain more in depth.......every truck is different as far as body lines, etc, etc..... 4" is tight. I've had some trucks that it falls into place and one wouldn't even understand how anyone would have trouble. Others..........takes some finagling. To give some rough estimates of numbers........ I bet 3-4 out of 10 kits we sell, I get a call saying a piece doesn't fit, or it's impossible to get in. Whether these are Daimond eye or MBRP kits. Transmission mounts, engine mounts, etc...... change angles and going through the transfer case is very tight on some trucks.
89 RC on shortened 92 diesel frame - NV4500 w/dual disc/4.10s on 37s. - Self built pump, "hot screw", lots of timing, True high volume low pressure lift pump, 62fmw/68/.7gated, 77lpm SAC Inj., Studs/O-rings,- 423/1220 Mustang - 11/16/2013 http://www.TheHungryDiesel.com full line dealer, if you don't see it please ask.
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Re: How loud is straight pipe sound from in cab

Postby DodgeFreak » Sun Jun 26, 2016 4:58 pm

I had a de kit on my 4 wd and the tcase piece was tight. I now have it on my 2wd crew and the over axle piece hits the shock cross member but clears ever where else.
92 D350 Cab and Chassis. Auto stock, wiring gremlins. 330k miles
92 W250 Ext cab rotted completely out. Auto, pump maxed, 215 ppump nozzles, Denny T2 pin.
85 D350 single wheel, converted to cummins, getrag, turned up 2 turns and afc screw flush.
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Re: How loud is straight pipe sound from in cab

Postby spencerdiesel » Mon Jun 27, 2016 6:41 am

So like you said Eric, the only thing consistent is the inconsistency:lol:
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

Fuel: THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw bottomed @ 3 turns, timing bumped 3/16"
Muffler delete
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Re: How loud is straight pipe sound from in cab

Postby Richie O » Mon Jun 27, 2016 9:03 am

I bought the pricey stans kit for my 89 back before the DE kit was available. Works well, I have part of the DE kit on my 93 messaged slightly for the driveshaft to fit. I called them and they sent a new down pipe to me for free as they found they had a fit issue. (5 years back or so),, My 92 will be getting the spare freebe when that gets reworked. For the money, DE gets my vote. Even with a little fittment issue here and there, its so worth the money. My 89 is straightpiped now and sounds like poo, my 93 with stacks is straightpiped and sounds really good. I get thumbs up and many comments while driving it.
1989 W250 727, 3.07 L/S, S300, P/S Intercooler, Stans exaust, Pump adjustments, 127k miles,297 hp
1993 W250 extended cab, rag, 4.10 l/s, 6x16's, HTT 62/71/14 piston l/p, Isspro EV series tach, fuel pressure, boost, oil pres, water temp, volt, pryo, 132k/ 301 hp
1992 W250 with NV4500, 3.54's, 16cm 60mm GDS H1C, ground stock cone, Isspro tach, pryo, boost, fuel pressure, slow, rusty, dented,180k
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Re: How loud is straight pipe sound from in cab

Postby spencerdiesel » Wed Jun 29, 2016 11:16 am

Richie I've got your vid pulling the trailer saved on my phone, I show it to my buds when they talk about 6.doh's ;)
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

Fuel: THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw bottomed @ 3 turns, timing bumped 3/16"
Muffler delete
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Re: How loud is straight pipe sound from in cab

Postby Richie O » Wed Jun 29, 2016 4:56 pm

spencerdiesel wrote:Richie I've got your vid pulling the trailer saved on my phone, I show it to my buds when they talk about 6.doh's ;)



Very popular video. 350k views so far. :D
1989 W250 727, 3.07 L/S, S300, P/S Intercooler, Stans exaust, Pump adjustments, 127k miles,297 hp
1993 W250 extended cab, rag, 4.10 l/s, 6x16's, HTT 62/71/14 piston l/p, Isspro EV series tach, fuel pressure, boost, oil pres, water temp, volt, pryo, 132k/ 301 hp
1992 W250 with NV4500, 3.54's, 16cm 60mm GDS H1C, ground stock cone, Isspro tach, pryo, boost, fuel pressure, slow, rusty, dented,180k
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Re: How loud is straight pipe sound from in cab

Postby DodgeFreak » Tue Jul 05, 2016 2:01 pm

I'm not sure how accurate the db on my phone is, but when we went to Oklahoma this past weekend it was 4" straight pipe exiting behind the rear tire. Pulling a trailer with a 74 Plymouth Duster at 70-75 it was 84 db. With a straight through muffler it was 81-82db at same speed with a 91 Dakota excab with the bed loaded down. Another variable was I turned the pump down a turn but that shouldn't have had an affect on the noise I wouldn't think. I know its not an accurate comparison but something to go by. The biggest difference was not how loud it was but it took some of the harshness out from the drone. It is pretty quiet outside because in my town I would drive between two brick buildings and it would be really loud if I rolled into the throttle. Now it doesn't hardly change. I made my exhaust so I can swap out the muffler in a matter of about 5 minutes.
92 D350 Cab and Chassis. Auto stock, wiring gremlins. 330k miles
92 W250 Ext cab rotted completely out. Auto, pump maxed, 215 ppump nozzles, Denny T2 pin.
85 D350 single wheel, converted to cummins, getrag, turned up 2 turns and afc screw flush.
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Re: How loud is straight pipe sound from in cab

Postby Cburb » Mon Jul 18, 2016 7:32 pm

Ive got 4 inch straight from the turbo back to a 5 inch tip and isnt bad at all, even with all windows open you can tell its loud if u were outside of it but driving around inside you could hear radio fine and hold conversations.
93 W250 CTD Club Cab, 5 speed: Complete 4 inch Exh. ASA/ AFE Intake, Denny t stage 2, Pump turned up, Pump timing, Injector Nozzles, #3200 Gov Spring.
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Re: How loud is straight pipe sound from in cab

Postby DodgeFreak » Mon Jul 18, 2016 10:40 pm

You people must have better sound deadening in your trucks than I do, I took it again down to Oklahoma to pick up a Formula S fish and running 70-75 unloaded wasn't horrible but still had to talk louder than normal and have the radio up louder and running 70-75 loaded it was worse and deafening, the only trucks I've been in that was worse was ppump, and a 24 valve straight piped trucks with stacks, those were bad. only reason I left it straight piped because at normal speeds 55-60 its not bad and I like the sound but on trips I hate it. If I knew it wouldn't quit and I could afford it I would run a muffler bypass with an electronic cutout.
92 D350 Cab and Chassis. Auto stock, wiring gremlins. 330k miles
92 W250 Ext cab rotted completely out. Auto, pump maxed, 215 ppump nozzles, Denny T2 pin.
85 D350 single wheel, converted to cummins, getrag, turned up 2 turns and afc screw flush.
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Re: How loud is straight pipe sound from in cab

Postby PToombs » Tue Jul 19, 2016 5:57 pm

Get a small linear actuator. They are reasonably priced and all you need is a 2 way momentary switch to run it. I have a small one here with about a 3 inch throw I got cheap.
pete

Just enough power to break everything behind the crankshaft.
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Re: How loud is straight pipe sound from in cab

Postby DMan1198 » Wed Jul 20, 2016 2:08 pm

On the highway the wind noise makes me have to turn my stereo up, and it's really only when you slow down that you realize just how high the volume is. And I didn't realize it before, but almost all of my exhaust noise is turbine whistle. When I can afford them it'll be interesting to see how the bw 68mm, and 87mm turbine sound together.
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Re: How loud is straight pipe sound from in cab

Postby tbidigare » Sun Aug 21, 2016 3:53 pm

I recently chopped off my muffler on my 92 D250. I dumped the exhaust in front of the rear diff and was a little disappointed with how quiet it was at initial start-up. At idle, it doesnt sound very loud at all. Only slightly deeper. At low speeds it is noticeably deeper sounding(AKA Awesome). At cruising speeds I cant really tell too much of a difference inside the truck but at WOT it sounds pretty good. I was hesitant to cut my muffler off at first because I live in a neighborhood and didnt want to deal with the neighbors bitchin but as long as i dont have a heavy foot in the neighborhood it isnt that loud. I wish I would have straight piped it sooner.
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Re: How loud is straight pipe sound from in cab

Postby spencerdiesel » Tue Mar 21, 2017 6:45 pm

Anyone want to post exhaust clips? On occastion I've seen a YouTube vid where I thought the exhaust of certain VE trucks was phenomenal, and others with the same exact exhaust (be it all 4", 3" dp to 4" etc) sounded less enthralling.

I'm searching for sound something like this https://m.youtube.com/watch?v=0tUUeTAJUrk
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

Fuel: THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw bottomed @ 3 turns, timing bumped 3/16"
Muffler delete
spencerdiesel
14mm rotor
 
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Joined: Tue Oct 27, 2015 4:02 pm
Location: Brevard, NC
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