Another BP Swap with Rebuild

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I haven't tried it myself, yet, but I heard that if you weld a washer to the inside of the exhaust pipe it would quiet the system down until you step on it and it forces the air thru the hole, and a resonator is more restrictive than a washer.

Those wheels are nice! I haven't been thru your whole thread but it looks like you did a good job on it!

[rockin86ranger]

Time for an update. Mike and I worked on the car last week and replaced the heater core. Total time to do the heater core: 2.5 hours! Here is a picture of the dash off:



Later on I replaced the passenger side cv axle. I have learned that rebuilding axles is not always the best idea, go figure.

Hey this is exactly what i'm doing on mine next, the heater core and passenger cv shaft. Just waiting on the money for the cv shaft (have a heater core out of a another car already)

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Did you ever get your dash lights to come on? I just read (skimmed a couple parts) the whole thread, it's pretty impressive! I might have some questions for you about it soon! I'm wanting to do a BP swap in my Aspire, any future plans with a turbo?

[FestYboy]

I haven't tried it myself, yet, but I heard that if you weld a washer to the inside of the exhaust pipe it would quiet the system down until you step on it and it forces the air thru the hole, and a resonator is more restrictive than a washer.

^ note: the above statement = FAIL the reason a resonator works is it allows the exhaust gasses to expand into the chamber and slow down, thus reducing the ability for the gasses to produce noise. there is no restriction in a well built resonator. a washer will induce a restriction, always. and it will likely produce MORE and unwanted noise in the process.

[blkfordsedan]

LOL, If you weld a series of lock washers in the pipe, it will create a spiral flow effect.....just like the high-dollar Moroso mufflers!

Giggidy, giggidy....aaaaaaaalll riiiiiiiiight!

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^ note: the above statement = FAIL the reason a resonator works is it allows the exhaust gasses to expand into the chamber and slow down, thus reducing the ability for the gasses to produce noise. there is no restriction in a well built resonator. a washer will induce a restriction, always. and it will likely produce MORE and unwanted noise in the process.

Have you ever tried it? A friend of mine with years of experience with cars & racing told me about it.

[geezerstiva]

It doesn't make sense tjat it would work like that. A washer that is smaller than the pipe will be a restriction, definitely. I know in my experience a smaller pipe makes a louder and more irritating sound than a larger pipe. From what I understand of a resonator, it is basically just a section of the exhaust that is larger diameter than the rest of the pipe. That makes sense to me. But hey, what do I know? Lol

[timmay89]

Did you ever get your dash lights to come on? I just read (skimmed a couple parts) the whole thread, it's pretty impressive! I might have some questions for you about it soon! I'm wanting to do a BP swap in my Aspire, any future plans with a turbo?

Hey, Yep I did get the dash lights to come on. The problem ended up being a had a plug connected to the wrong connection. Thanks for the response. This was a big job because I had to but in a BP and swap all of the wiring over to a 1990+. After doing that I went back and put in a G series transmission. My next BP swap will NOT have a G series in it because it was ALOT of work and I don't drive like a crazy person enough to worry about breaking the E series.

Also I was looking into a resonator, not 100% sure I am going to yet. In regards to a turbo, I would love to turbo it, but it's already fast enough at this point. It loses traction in 2nd and 3rd, so I am happy with that. I think if I did another BP build I would go turbo, as I love the sound of a blow off valve, but that's ALOT of power and alot of upgrades needed to do it right.

[Safety Guy]

I'm running midpipe resonators on two cars: Aqua (B6/5 speed) and Twin (B3/5 speed). I used the shortest Thrush glass packs in 2" diameter to match my whole exhaust system, which are stock exhaust manifolds and downpipes with Magnaflow low restriction cats and Magnaflow mufflers, with all 2" piping.

The glass packs are welded in right where the factory resonator went, underneath the car just behind the shifter area. Compared with Luxstiva's B6/auto, which still has plain 2" pipe in that area, the resonators do take a noticeable amount of noise away from the car, even making up for the higher auto revs. All my systems are 2" Magnaflow front to back, with the exception of the Thrush glasspacks. I highly recommend this mod if you want more noise and vibration control. (Lux will be getting it when she is rebuilt.)

Karl

[timmay89]

I'm running midpipe resonators on two cars: Aqua (B6/5 speed) and Twin (B3/5 speed). I used the shortest Thrush glass packs in 2" diameter to match my whole exhaust system, which are stock exhaust manifolds and downpipes with Magnaflow low restriction cats and Magnaflow mufflers, with all 2" piping.

The glass packs are welded in right where the factory resonator went, underneath the car just behind the shifter area. Compared with Luxstiva's B6/auto, which still has plain 2" pipe in that area, the resonators do take a noticeable amount of noise away from the car, even making up for the higher auto revs. All my systems are 2" Magnaflow front to back, with the exception of the Thrush glasspacks. I highly recommend this mod if you want more noise and vibration control. (Lux will be getting it when she is rebuilt.)

Karl

Hey Karl,

I ended up installing a really big resonator, maybe 20-22" long. It helped bring down the noise. I now want to find a quick/cheap way to reduce cabin noise.

[Movin]

Tuning a 2 stroke for Hot Saw racing or Snowmobiles, Ultralites is all about the size
and shape of a expansion chamber, and good ones have tune-able orifices on the
exit..like a washer! All this is to manipulate the magnitude and timing of pressure
waves. What makes a 2 stroke scream would be havoc for a 4 stroke. Instead of bouncing
pressure waves off the exhaust port it is important to keep a smooth steady low
pressure at the exhaust port to work with a good NA cam for a broad power band. There has been an incredible amount of R&D that shows what works it doesn't make a
whole lot of sense to start over in this exhaust area!

Once you get past the header all the fun stuff is making sweet sounds!

[Movin]

Hey Karl,

I ended up installing a really big resonator, maybe 20-22" long. It helped bring down the noise. I now want to find a quick/cheap way to reduce cabin noise.

I am interested in that! Quietest rated tires helped, I chose winterforce
because of the quieter noise rating over some other tires that rated
better for traction.