View Poll Results: What are the best side pipe baffles for preformance? (open not a choice, for street)

Hooker Reverse Flow

Hooker Glasspack

8.57%

STS

54.29%

Sweet Thunder

17.14%

Other

20.00%

Voters: 35. You may not vote on this poll

Baffled by Side Pipe Baffles

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Sep 14, 2013 | 09:15 AM

#21

LannyL81

Melting Slicks

Joined: Nov 2005

Posts: 3,323

Likes: 142

From: Green Valley Arizona

Chambered: I have the sidepipes off the car.....let me get some measurements taken today.

Okay here are some measurements:
Hooker Headers & Sidepipes - tubes are 40" to the opening edge of the outlet.
There is 2.5" of overlap of the tubes onto the header collector.
Tubes reduce diameter about 3" from the collector end which includes the 2.5" above.
I have the MaxFlows which are 30" long.

So....40" - 2.5" = 37.5"...and then substracting another 1.5" so the insert would not show = 36" as the maximum length the insert could be.

Now....the inserts could be longer if allowed to go into the header collector instead of just being in the tube only. However this would require the insert to have a smaller diameter flange at one end and then a larger flange at the other in order to keep it from rattling. The smaller diameter flange would is required to fit the header colletor ID. This would allow 5" more in total length bringing the max length to 41".

There you go.

Last edited by LannyL81; Sep 15, 2013 at 01:40 PM.

Sep 14, 2013 | 10:02 AM

#22

resdoggie

Had a 1976 L-82, 4-sp

Joined: Mar 2011

Posts: 5,338

Likes: 1,213

From: Some days your the dog and some days your the hydrant.

Royal Canadian Navy

MaxFlo's here. Sounds great, straight through design, no rattles.

Sep 14, 2013 | 12:31 PM

#23

Chambered

Race Director

Joined: Jan 2005

Posts: 11,009

Likes: 166

From: Milford Michigan

Quote:

Originally Posted by LannyL81

Chambered: I have the sidepipes off the car.....let me get some measurements taken today.

Okay here are some measurements:
Hooker Headers & Sidepipes - tubes are 40" to the opening edge of the outlet.
There is 2.5" of overlap of the tubes onto the header collector.
I have the MaxFlows which are 30" long.

So....40" - 2.5" = 37.5"...and then substracting another 1.5" so the insert would not show = 36" as the maximum length the insert could be.

Now....the inserts could be longer if allowed to go into the header collector instead of just being in the tube only. However this would require the insert to have a smaller diameter flange at one end and then a larger flange at the other in order to keep it from rattling. The smaller diameter flange would is required to fit the header colletor ID. This would allow 5" more in total length bringing the max length to 41".

There you go.

No, I wouldn't want to go into the collector at all. So if you go in 2.5" into the sidepipe, then start the muffler insert, then you would have how far until the beginning of the bend radius for the turnout? 36"? This would not give me much more to work with. Thanks for the info.

For the guys with the OBX - are they going to be the same length?

Sep 14, 2013 | 12:45 PM

#24

Flyinace3

Racer

Joined: Feb 2012

Posts: 261

Likes: 3

From: Clawson Michigan

Quote:

Originally Posted by Chambered

Guys, I modeled the inserts (lengthwise) based on the Hooker inserts - 33-1/4" long overall. In the past few weeks in talking with customers, I believe the inserts for the C-3 Vettes can be quite a bit longer, which will give me More options on tuning & dBA control. So I ask you, with the inserts properly positioned inside the 4" OD sidepipes (slid in just so there is no interference at the inlets of the pipes), how much longer can they be before reaching the end of the straightaway of the pipes?

I had this problem with my hooker inserts being too short which caused them to side back and forth. To solve this issue I made shims to fit inside the side pipe and rest against the collector and insert when assembled. With hooker max flo inserts the gap between the collector and insert was 1 3/4". I thought a expandable collar on the insert would be a great idea to prevent rattling and the insert from moving around. I also used high temp permatex on both ends of the insert to prevent the steel on steel rattle from vibrations.

Sep 14, 2013 | 07:21 PM

#25

LannyL81

Melting Slicks

Joined: Nov 2005

Posts: 3,323

Likes: 142

From: Green Valley Arizona

Chambered: yep, 36" would be the max length.

Flyinace3: yeah, same problem. The MaxFlows are only 30" long, but inside the tube there is 36" of space...so the inserts have 6" of slide.

UPDATE:
Wrong, wrong, just wrong - I took another look at the inserts and tubes.
The end of the tubes that slide over the collector have a larger ID to allow this slip fit. This larger ID is about 3" long and then the tube diameter is reduced.

I first thought the MaxFlows would insert either way into the tube...nope....only one way. One end of the insert has a larger diameter flange and will only slide into the tube the length of the larger ID for the slip onto the header collector...then it stops.
The other end of the MaxFlow is smaller and slides all the way into the tube until the larger diameter flange meets up with the reduced diameter. This is a nice sung tapered fit and prevents the insert from sliding further into the tube.

Now it would be possible for the insert to slide forward but this would likely only happen when the forward motion of the car comes to a very abrupt stop....as there is about 0.5" that the insert could come forward before hitting the end of the header collector.

Last edited by LannyL81; Sep 15, 2013 at 01:51 PM.

Sep 14, 2013 | 08:13 PM

#26

Super6

Burning Brakes

Joined: Feb 2012

Posts: 925

Likes: 7

I didn't think this would work and it didn't.

Last edited by Super6; Sep 14, 2013 at 08:24 PM. Reason: Oh well.

Sep 14, 2013 | 09:02 PM

#27

resdoggie

Had a 1976 L-82, 4-sp

Joined: Mar 2011

Posts: 5,338

Likes: 1,213

From: Some days your the dog and some days your the hydrant.

Royal Canadian Navy

My Max Flo's don't slide around. How are you guys putting them in? I slide mine all the way back into the tube for a snug fit. To remove them I have to hold the tube vertically and drop it on a piece of wood.....a couple of times.

Sep 15, 2013 | 01:29 PM

#28

LannyL81

Melting Slicks

Joined: Nov 2005

Posts: 3,323

Likes: 142

From: Green Valley Arizona

I updated my last post above.

The MaxFlow inserts cannot slide further into the tube towards the outlet...the interference taper fit prevents this.

It is possible for the insert to slide forward as I tried to describe above. There is nothing to keep the insert tight against the taper.

This is where a piece of metal, same ID/OD as the collector end could be put in the tube after the insert is in position to keep the insert tight against the taper. This would prevent it from ever sliding forward and probably from rattling.

Just a thought.

Last edited by LannyL81; Sep 15, 2013 at 02:01 PM.