Exhausts for 80-series?

baktasht · 08-31-09, 12:44 PM

Quote:

Originally Posted by Ebag333

Is that flex tubing? Or something to additionally dampen the sound?

It's a flex section

Ebag333 · 08-31-09, 12:47 PM

Why are you looking at that?

If you were going to add it, I'd say add it between the end of the Y pipe and the cat. At least then it'd be fairly easy to replace, and you'd only have to replace one. (It looks like in the pic that it's being considered as part of the Y pipe.)

baktasht · 08-31-09, 01:04 PM

More pics:

Quote:

Originally Posted by Ebag333

Why are you looking at that?

If you were going to add it, I'd say add it between the end of the Y pipe and the cat. At least then it'd be fairly easy to replace, and you'd only have to replace one. (It looks like in the pic that it's being considered as part of the Y pipe.)

There's nothing to replace really. It's a welded part of the assembly. It's being added for two reasons:

* To absorb shock/flex when the motor torques back and forth. On trucks this old with motor mounts that are usually fairly worn we're probably seeing a lot of flex.

* To allow for movement when the chassis flexes between the headers and the rest of the exhaust system.

It'll also help to dampen vibrations from the motor through to the rest of the exhaust so there's less vibrations transferred into the cabin.

Ebag333 · 08-31-09, 01:29 PM

Whats the longevity of those? I would be somewhat concerned about them wearing over time, especially in an environment that can see water, dirt, sand, dust, etc getting in there and acting as abrasives.

baktasht · 08-31-09, 01:40 PM

Quote:

Originally Posted by Ebag333

Whats the longevity of those? I would be somewhat concerned about them wearing over time, especially in an environment that can see water, dirt, sand, dust, etc getting in there and acting as abrasives.

They'll last just as long as the rest of the exhaust. Most OEM setups come with flex sections from the factory. Looks like the Land Cruisers didn't though.

fzjconvert · 08-31-09, 01:53 PM

They came on diesel trucks. I think.

CycloSteve · 08-31-09, 02:44 PM

Looking great. I am definitely interested in one for a 96' FZJ80 in the cat-back design, exhaust exiting just behind the rear tire (4x4 labs bumper-style). Live in California, thus need to keep the OEM cats. Watching this thread daily, and thanks for all the teaser shots.

Would also be interesting if you made a y-pipe which would work with the OEM cats, then the cat-back! I'd signup for that one.

Atoyot1031 · 08-31-09, 03:25 PM

Quote:

Originally Posted by baktasht

It's a flex section

That's an excellent idea. Make sure there is enough room on the inside of the wheel well though. My 37s come pretty close to my y-pipe flange which is in a similar location.

96r50 · 08-31-09, 07:05 PM

Looking good. I'm following this with interest!

Bruneti · 08-31-09, 08:01 PM

Suggestion: Add a flange between the Y-Pipe and the Cat. The stock exhaust lacks one before the first cat and this is the time to do it. This would make the full exhaust 4 pieces and smaller to ship.
-Y-Pipe
-Cat
-Muffler
-Tailpipe

Do you plan on having a small muffler in the tailpipe section as a resonator like the stock setup?
Also consider 1 flex section after the Y instead of 2 in the Y. Less cost and less to fail.

Ebag333 · 08-31-09, 08:22 PM

Quote:

Originally Posted by Bruneti

Do you plan on having a small muffler in the tailpipe section as a resonator like the stock setup?

I don't believe it's part of the plan, but won't know for sure until it's finished getting put together and listened to.

If you *REALLY* hated it, you could add your own.

baktasht · 09-01-09, 03:42 PM

Finished and ready to go:

Corbet · 09-01-09, 03:50 PM

so now what everyone wants to know..... how much?

baktasht · 09-01-09, 03:54 PM

Quote:

Originally Posted by Corbet

so now what everyone wants to know..... how much?

Not sure yet to be honest. It's definitely a little over the budget we were calculating before starting because we went with a fairly high end muffler and the flex sections were added to the design. I'll let you guys know pricing as soon as we get it all down on paper and go over the numbers.

concretejungle · 09-01-09, 05:23 PM

IMHO flex sections near the downpipe are a must. I know dusty has them on his exhaust with no problems. With worn or not worn motor mounts, the motor will torque and move. I had an exhaust mount break just because of that.

Exhaust looks great!! I need to get mine replaced. My only real plan is to take the O2 sensor bungs to a reputable shop and tell him "i don't want it to rattle ever, and i want it tucked up as high as you can get it"

Hope that gets er' done.

baktasht · 09-01-09, 05:25 PM

Quote:

Originally Posted by concretejungle

IMHO flex sections near the downpipe are a must. I know dusty has them on his exhaust with no problems. With worn or not worn motor mounts, the motor will torque and move. I had an exhaust mount break just because of that.

Exhaust looks great!! I need to get mine replaced. My only real plan is to take the O2 sensor bungs to a reputable shop and tell him "i don't want it to rattle ever, and i want it tucked up as high as you can get it"

Hope that gets er' done.

You can always just buy the ypipe/cat section of ours, or just the muffler section all the way back

Salue · 09-01-09, 05:39 PM

Baktasht,
Just wondering if you did a dyno comparison between the stock and new exhaust.

Salue

landtank · 09-01-09, 06:05 PM

nice job, however the O2 shield is on the wrong one.

baktasht · 09-01-09, 06:06 PM

Quote:

Originally Posted by Salue

Baktasht,
Just wondering if you did a dyno comparison between the stock and new exhaust.

Salue

Salue,
Not yet, we will soon though. My fabricator just barely got the final assemblies done today. Next steps are to road test and dyno test.

Archengine · 09-01-09, 06:42 PM

It seems from the replies in this thread that no 80's came with a flex tube. My 96' has one fitted in the y-pipe. It's a factory exhaust as far as I know, I picked it up with 80,000 miles, in stock condition. I'm happy to see them added. I've also been following this thread with excitement.

Rob

baktasht · 09-01-09, 07:26 PM

Quote:

Originally Posted by Archengine

It seems from the replies in this thread that no 80's came with a flex tube. My 96' has one fitted in the y-pipe. It's a factory exhaust as far as I know, I picked it up with 80,000 miles, in stock condition. I'm happy to see them added. I've also been following this thread with excitement.

Rob

I think a lot of people misunderstand flex sections, and the need for them in certain scenarios. In this particular case, the need was two fold. One reason was to absorb any shock from the engine rocking back and forth, and second was because we were seeing a LOT of movement when the metal expanded and contracted to where my fabricator was almost certain that it would cause problems in the longrun if we didn't plan for it from the start. So the addition of the flex sections came to resolve both issues. Is it 100% necessary? Probably not, and in most cases other companies and muffler shops will not use them, because of cost, and because it's more welding/cutting/fitting time. But in a product that we put our name on, we make sure that we do everything possible to assure that the parts we sell will last as long or longer than the vehicle they are put on. That way our customers can always be sure what they get from us is only the best quality without compromise, and we are also able to include our unmatched lifetime warranty with our products with confidence.

With all that said. I'm very happy with the way the setup has turned out. It actually came out a bit better than I was expecting when we started this project. Now I'm itching to get it on a few trucks so that we can get some feedback from the community on what you guys think when you are able to see/feel/touch/hear it in person.

If anyone is interested in being a beta-tester for the exhaust now that it is complete let me know. I'll leave it open to anyone in the US (minus Hawaii or Alaska). You'll need to be on a 95-97 Land Cruiser. It'd be nice to get a mix of supercharged and non-supercharged guys. The normally aspirated guys will probably pick up around 10-20% HP/torque increase, the supercharged guys may see around 15-25% increases (we'll see once we get a few on the dyno.

Please send your inquiries regarding beta-testing as personal message on the forum or as email. Included the following info:
Name
Vehicle year
Milage
Naturally aspirated or Supercharged
Location (city/state)
Any problems with the vehicle (mechanical or otherwise)

Corbet · 09-01-09, 07:48 PM

pm sent

Ebag333 · 09-01-09, 08:26 PM

Quote:

Originally Posted by landtank

nice job, however the O2 shield is on the wrong one.

Oh snap. Good catch. That cat will toast the O2 wiring for sure.

I wonder if it'd be possible to run it over or through the body mount.....

Quote:

Originally Posted by baktasht

In this particular case, the need was two fold. One reason was to absorb any shock from the engine rocking back and forth, and second was because we were seeing a LOT of movement when the metal expanded and contracted to where my fabricator was almost certain that it would cause problems in the longrun if we didn't plan for it from the start.

That movement/expansion is likely the reason why the factory Y Pipes tend to crack across the middle.

OLDTIMER · 09-01-09, 08:37 PM

I've been following this post and don't see much interest in a "cat-less" system, That's what I'm interested in. solid well built mild steel system in (4) parts that I can bolt together and easily replace sections that will get damaged along the way. and also wont cost a bunch of money to get shipped

97 LX450 Just Purchased & all stock so far

Corbet · 09-01-09, 08:43 PM

The 2nd O2 sensor ahead of the muffler looks like it could fall victim to a rock. Or it could just be the angel the photo was taken at?

baktasht · 09-01-09, 09:37 PM

Quote:

Originally Posted by OLDTIMER

I've been following this post and don't see much interest in a "cat-less" system, That's what I'm interested in. solid well built mild steel system in (4) parts that I can bolt together and easily replace sections that will get damaged along the way. and also wont cost a bunch of money to get shipped

97 LX450 Just Purchased & all stock so far

We can do that...

Quote:

Originally Posted by baktasht

Please send your inquiries regarding beta-testing as personal message on the forum or as email. Included the following info:
Name
Vehicle year
Milage
Naturally aspirated or Supercharged
Location (city/state)
Any problems with the vehicle (mechanical or otherwise)

Quote:

Originally Posted by Corbet

The 2nd O2 sensor ahead of the muffler looks like it could fall victim to a rock. Or it could just be the angel the photo was taken at?

Pretty sure it's the angle of the photo. Frame rail will go first before the sensor.

Quote:

Originally Posted by landtank

nice job, however the O2 shield is on the wrong one.

Quote:

Originally Posted by Ebag333

Oh snap. Good catch. That cat will toast the O2 wiring for sure.

Gabe, I think landtank is talking about the heatshield being on the wrong sensor. Just took a look at my truck and the OEM setup has the heatshield on the rear O2 sensor, and no shield on the forward one. From the location of the sensors (and from our phone conversation a few minutes ago), it seems you are correct in saying that the rearward sensor is now shielded by the frame rail, and that is more than likely why my fabricator put the heatshield on the front sensor to shield it from the heat from the headers. The heat wrap around the wiring on my truck with OEM sensors also looks identical to the heat wrap on your sensor in the pics, so thats's good as well. As far as spacing between the wiring and the cat goes, I don't see any clips holding the wiring on my setup. If there were any before, they may have broken off over the years. As long as you have a good 5" at least between the cat and the wiring you should be good to go, worst case a simple ziptie in the right spot to keep the wire secure and as far away from the cat as possible will prevent too much heat from getting to the wires.

Quote:

Originally Posted by Ebag333

That movement/expansion is likely the reason why the factory Y Pipes tend to crack across the middle.

Exactly! Good thing we made this setup to where people can buy JUST the y-pipe/cat section and bolt it up to their OEM muffler portion

OLDTIMER · 09-01-09, 10:52 PM

When you have a $ fig for the cat-less config please pm me. I also would like your input on the proper back pressure without the cats? should the muffler you propose be correct?

CycloSteve · 09-01-09, 11:54 PM

Interested in the beta...supercharged 96. PM sent.

Bruneti · 09-02-09, 12:55 AM

Looks very nice, but 2 questions:
1. Why not clock the flange right after the cat 90 degrees so it's less likely to hook on something and easier to reach the fasteners. Looks to be plenty of room side to side.
2. Could a flange be added between the y-pipe and the cat at the request of the customer? I like the idea of being able to bolt in a new cat. Seems silly to need to buy a whole new Y-pipe or have to weld a new cat into such pretty piping.

Very interested in an in-cab sound level comparison to the stock exhaust at several speeds and rpm's. Even using a cheap dB meter as well as beta tester feedback. Mine drones loudly somewhere between 1800 and 2000 rpm and its driving me nuts.

Brian894X4 · 09-02-09, 01:11 AM

PM sent for the beta testing.