PDA

View Full Version : Quite side pipes without restricting flow a lot


Yellow73SB
07-29-2008, 08:50 PM
I'm thinking about getting these

[Only registered and activated users can see links]

And making the turn downs point at the ground under the car

And maybe throw in one of these

[Only registered and activated users can see links]


My current set up completely sucks, it's the hooker inserts with the fiberglass packing, it all has to flow through a 2" tube

For some reason I keep thinking I spelled quite wrong, good thing I'm going back to school in a few weeks

Twin_Turbo
07-29-2008, 09:05 PM
Quiet.....

anyway, nothing proper available, I'm building some myself. 3" eprf. tubing, smooth entry and exit. Hopefully it'll work out okay and be slightly less noisy than with the boat mufflers

MYBAD79
07-30-2008, 12:36 AM
The Hooker Maxflows are not restrictive and not all that expensive, $150... ---> they're a little loud for street driving but that shouldn't be an issue for you....

TimAT
07-30-2008, 02:10 AM
For some reason I keep thinking I spelled quite wrong, good thing I'm going back to school in a few weeks

One of those wonderful English language things. The way you spelled it, it's like saying, "That's quite a thing". What you really wanted to say was "Holy crap, that exhaust is quiet"

Belgian1979vette
07-30-2008, 09:06 AM
For some reason I keep thinking I spelled quite wrong, good thing I'm going back to school in a few weeks

One of those wonderful English language things. The way you spelled it, it's like saying, "That's quite a thing". What you really wanted to say was "Holy crap, that exhaust is quiet"

:clobbered:

Worship79
07-30-2008, 10:23 AM
As you can see in my similar topic, I'm wrestling this issue too. If weather allows it I'm drilling my endcaps tonight, I'll make a pre and post video and a 'butt-o-meter' guestimate of possible HP gains. I'll be measuring exact gains in august by the way.

Twin_Turbo
07-30-2008, 01:39 PM
Want a set of custom inserts? I could build another set, they'll be loud though!

Yellow73SB
07-30-2008, 04:05 PM
I have those reverse flow mufflers and with holes drilled in them they are perfect. But I had to add packing to them and it really restricts flow alot

I wonder how much quieter if I ran the 4" pipe that had outlets like a tuned pipe on an RC car

[Only registered and activated users can see links] Fstore%2Fimages%2Fhpi33102.jpg&moduleId=image_details.jsp.M&clickedItemDescription=Image%20Details

Twin_Turbo
07-30-2008, 04:09 PM
2 stroke, completely different concept!

Yellow73SB
07-30-2008, 04:13 PM
Yeah but it won't be expanded or anything, I think it may help quiet it down. I'll have like 4 2" outlets or something

I really feel like trying it for some reason lol. I think I should be able to get 4" tubing pretty cheap from the exhaust shop down the road from our shop

It makes the RC cars a lot more quiter, it will look kind of ugly though on my car lol

MYBAD79
07-30-2008, 07:58 PM
The reverse flow mufflers are the worst, anything should be better than those.... free flowing mufflers like the SweetThunder inserts or the Maxflows are less than $150, I think the Maxflows are like $129 or so.... not worth messing with the reverse flows.... seriously: I'd just weld up the holes you cut in there and sell them for $60 or so... many want their sidepipes quiet and don't care about performance as much.... that way you're only out $80 for the Maxflows.... my2c

Yellow73SB
07-30-2008, 09:16 PM
The reverse flow mufflers are the worst, anything should be better than those.... free flowing mufflers like the SweetThunder inserts or the Maxflows are less than $150, I think the Maxflows are like $129 or so.... not worth messing with the reverse flows.... seriously: I'd just weld up the holes you cut in there and sell them for $60 or so... many want their sidepipes quiet and don't care about performance as much.... that way you're only out $80 for the Maxflows.... my2c

I ran reverse flows flipped so they didnt reverse the flow and I drilled holes in the end caps and ran no packing and it made more power than open mufflers but it was still too loud

Worship79
07-30-2008, 10:01 PM
Just for my understanding: you flipped them and then drilled the caps at the exhaust tip end (original front cap) or at the collector side (original end cap)?

How many holes did you drill? Two, four, eight?

Oh yeah: how did you get those darned things out?! :censored:

Yellow73SB
07-30-2008, 10:15 PM
I drilled a hole bunch of holes

in the front and back

Sadistic
07-30-2008, 10:18 PM
I thought we all knew that STS baffles are the answer for sidepipes. They produce almost the same hp/tq as open headers but are considerably quieter. I believe they weigh about 6 pounds per side.

Worship79
07-31-2008, 01:32 PM
Ofcourse STS is great, but modding what you already have is fun too :) Besides: there's most likely noone to sell my mufflers to in my country and abroad shipping costs will make people buy new.

@Yellow: thanks!