catback exhaust????

[suprarcr89]

Randy,

have you ever thought about making catback exhaust systems.....

-Ken

[shaeff]

they would be the SEX!

-shaeff

[becauseican]

Yes, I should have something in the works in the next few weeks.

[aye mate]

hmmm.....3.5in.??? There are plenty of 3in systems out I think. Now a 3.5in. system would be new.

[suprarcr89]

id be happy with a reasonable priced 3"catback....

[drostar]

id be happy with a reasonable priced 3"catback....

I as well.

[becauseican]

What do you consider reasonable?

[suprarcr89]

250 plus shipping w/ muffler..

theres a muffler shop here that will do 3" from downpipe back w/muffler for 250 but im buying my own muffler and there doing it for 200.. have seen there work(nice) and it is mandrel bent 3"piping.... but i do know how much goes into these kits but if it were 250 plus shipping or more depending on muffler you would sell alot more than others sell and everyone loves your downpipes so you would have no problem selling them...

just a thought....

-Ken

[becauseican]

I dont think I could do it for $250, but I have something in the works, stay tuned.

Randy

[Loki]

Randy, if you made something that was like your old 3.5" setup, I would most likely but it. That was the nicest sounding exhuast I have ever heard.

[Kyle87T]

I have been in contact with Randy for a little while, and will most likely be purchasing his "prototype" whenever he finishes it.

Cheers.

[suprarcr89]

would love to see it when hes done...

[SP 7M]

There are a number of 3" systems on the market today. With the HKS Drager having the biggest piping available at 85mm/3.3", we in the MKIII community need something bigger. I personally feel very strongly that another 3" system would not tailor to the truly power-hungry group amongst MKIII owners. Will Neely has made 730whp (as posted on 7mpower.com) with the Blitz Nur Spec R (which I use), but if he switched to a 4" system, he'd be toying with 800whp. Here's a must-see link: http://www.to4r.com/special.php?id=1.

Randy, I know the MKIII is not the MKIV, but there are now a handful of 4" systems and even a 5" system available for the MKIV. If you made a 3.5" or 4" system, I'm sure you'd have a market waiting there to scoop it up. If you could also make a bigger dp to match up to it, that would be nice, too. Or would you consider the DDP to have ample volume to properly expel exhaust gasses when mated to a 3.5 or 4" cat back? For those of us going for bigger power than the average Supra enthusiast, it would make sense to be the only manufacturer of a large-diameter pipe cat back system. Keeping the prices of MKIV 4" systems in mind, I would be prepared to pay $800-$900ish for the first one available for the MKIII. I like the style of muffler that WOTM (http://www.wotm.com/wo4instcamks.html) and VWR (http://members.cox.net/virtualworksracing/exhaust/ex1.htm) use on their MKIV systems, and stainless would be a nice touch. Also, in just over a year, I'll be moving back to Southern California, so noise will be somewhat of an issue. If you could either offer a choice of a resonator or silencer, or a combination of both, to keep the db's in the 95-100 range, that would be great. I'm not sure off the top of my head what RPM the CHP test your car's exhaust noise at, but I don't want to be driving around paranoid about getting pulled over for some BS like that.

I am going to switch to the DDP for the SP61GT, as soon as I get mine installed, but I can choose when to keep the car quiet and when to unleash hell upon unsuspecting drivers' ears. That doesn't stand as a big concern of mine.

Thanks for your time, Randy.

Craig

[aye mate]

:withstupi even tho Im not a big power guy at the moment. A 3.5+ in. system would be a marked improvement for the MKIII community. Even the ct-26 might benefit from a larger exhaust. And we can all agree that Randy would be probably the best canidate for making such a product. (end rant) Thank you for your time.

[SP 7M]

Have you got anything you can tell us concerning this, Randy? I've already heard from someone at Horsepowerfreaks.com trying to sell me their new 4" cat-back. There is no rush whatsoever as far as me getting one, but it would be nice to know what will be available when I do choose to step up from the Blitz Nur Spec R.

Thanks again.

[SP 7M]

Jeff-I think it's awfully disrespectful to attempt to undercut Randy on his own section of the forum. If you're simply on his space to push HPF's parts, including the new 4" cat-back system-which, according to you, there is a small market for, then that is just plain low. I'm sure I wasn't the only one that has received a private message from you concerning this particular topic.

There is a reason that people are asking Randy for these parts-they want to buy them from him. Nearly everyone on this forum knows about HPF, and we're aware of what HPF offers. I'm sure that the administrators of this forum would not be pleased if they knew that you were pushing your parts on the members without the proper permission.

I see that there are several different sections of this forum that are for vendors. I am yet to see one for HPF...

I certainly wouldn't expect this to come from some one from HPF after I had such great service from an HPF sales rep in the past. Thanks for highlighting yourself, though. I would certainly not want to have some one whom has displayed such dishonest behavior as yourself benefit from any purchases I make from HPF in the future.

[suprarcr89]

if i had a 3.5" catback i would have to have a 3.5" downpipe.... so theres another market 3.5" bic downpipes....

[Lurch]

Yeah, right now my plan is to run a BIC DDP and Test pipe with the cutout, and run an electric cutout plate. So I wouldn't bother paying more for over 3" cat (or test pipe) back, because when I wanted the best flow I'd just go open DP at the flip of a switch. However, if there were a 3.5" DDP to go along with it, I'd consider ignoring the test pipe/electric cutout scenario and just go with 3.5" all the way back.

I hear nothing but pleased customers from BIC.

[SP 7M]

if i had a 3.5" catback i would have to have a 3.5" downpipe.... so theres another market 3.5" bic downpipes....
This isn't a shot, but you don't NEED the same piping diameter throughout your exhaust. For example, WOTM offers an adapter that has is essentially a step-up from a 3" two-bolt flange to a 4" pipe with a V-band. That's to make it possible for those MKIV owners still running a 3" dp to mate a 4" cat-back to it. Whether Randy decides to make a bigger dp to match the cat-back, or just offers an adapter, I'm sure it will work out just fine. You also have to keep in mind that with the DDP design, that there is a reduced percentage of exhaust travelling through your exhaust piping once you've started boosting.

I hope this is somewhat of a help to you.

[Loki]

I think I heard talk this weekend at SupraFest about a 3.5" exhuast that would bolt up a 3" DP, I think that's what I heard Randy saying but He'll have to chime in with what he's actually going to be doing.

[SP 7M]

Jeff-I apologize for some of what I said. I also would like to admit that I have failed to notice that HPF has its own vendor section on this forum. I can blame my lack of activity on this forum for that, along with not double-checking before I made that post yesterday. On the main page, I only scroll down far enough to see BIC's section so that I may enter it.

I still feel, however, that you were on BIC's section to privately scout out buyers for HPF parts. Whether or not that is your idea of the truth, that is how I interpretted the situation. I believe that failing to mention to everyone openly on the thread that you were pushing HPF's new 4" cat-back system via private messages would have kept you from hiding anything from all who view this thread.

I'm not looking or asking for your respect, here, Jeff. I have too much self respect to look for it online. My dignity, however, will never exceed my ability to admit when I am wrong.

[Dew511]

they would be the SEX!

-shaeff

Yeah... what he said. And 3.5+" doesnt sound too bad at all.

Ok... enuf of the bickering and undermining, this is Randy's section for ideas. Lets just keep it that way.

[1TuffSupra]

You should make an exhaust similar to the now discontinued greddy DD, I had one on my 240sx and nothing sounded like it It starts out at 3" and then split into two 2.5" pipes side by side, it really helped with ground clearance. But to put it simply the look and sound was mean as hell! :evil2: You should just make it go from 3.5" to two 2.75" pipes. I gaurantee it would sell like hotcakes. If no one is willing to make it, I think I will buy all the pipes and get it done up here locally.

Here is a pic
http://www.driftday.com/dd_alone_T.jpg
http://www.whifbitz.co.uk/images/parts/greddy/ddmuffler.jpg

[ma71supraturbo]

You should make an exhaust similar to the now discontinued greddy DD, I had one on my 240sx and nothing sounded like it It starts out at 3" and then split into two 2.5" pipes side by side, it really helped with ground clearance. But to put it simply the look and sound was mean as hell! :evil2: You should just make it go from 3.5" to two 2.75" pipes. I gaurantee it would sell like hotcakes. If no one is willing to make it, I think I will buy all the pipes and get it done up here locally.

Here is a pic
http://www.driftday.com/dd_alone_T.jpg
http://www.whifbitz.co.uk/images/parts/greddy/ddmuffler.jpg


That's pretty sweet. There is a relief on the passenger side of the differential where another pipe could go, but it would have to make another 90 degree bend almost immediately to clear the fuel tank.

[Eric_Odie]

if you made one similar to the greddy DD i know myself, and 3 other supra owners in my area that i talk too would buy it, that would be freakin awesome! -_^ but if you didn't i have a feeling i'd still buy your exhaust lol

[Deep_Blue]

I'm definitely on board with something like a dual tip exhaust, but not necesarily the dual piping style used by the Greddy DD. If Randy were to create a cat-back, I would recommend offering multiple tips, one of which was a dual-outlet, and one of which was a single outlet. Nobody offers a dual tip except the HKS. With 3.5"-4" piping, that would be sex in exhaust form.

It would be sweet to see 3.5-4" downpipes and testpipes too.

Cheers!

[Eric_Odie]

i talked to some local supra owners i know, and they all said that a 3.5" would be sweet, cause if ppl wanted 4" they can buy the goliath, and well there's a whole bunch of 3" Exhausts, and no one has a true 3.5" exhaust, cause doesn't HKS come to like 3.25", i read that somewhere...

i kinda like that idea of seperate exhaust tips, dual or single, kinda like the Apex'i N1's =P

[SP 7M]

The HKS Drager has 85mm/3.3" piping. I honestly don't see a whole lot of a point in making an exhaust that is [only] two tenths of an inch larger than one that is already available.

Of course, Randy, it's your choice, but that's how I see it. I'm sure I'm not alone on that.

The new HPF Goliath has a pretty ugly muffler on it. I know that the system minus the muffler is available, but I don't want to have to go to the trouble of finding my own muffler and having it mated to the piping.

Although it's not a terribly bad idea, I don't think that the dual-pipe setup is totally logical for Randy to make. Randy's cost on that would be greater, hence, a greater price for the consumer to pay. Also, as it's been discussed, the MKIII doesn't have the greatest setup to allow for such a system. You've simply got to look at what's going to get the job done, then be concerned with the style issue.

[1TuffSupra]

Although it's not a terribly bad idea, I don't think that the dual-pipe setup is totally logical for Randy to make. Randy's cost on that would be greater, hence, a greater price for the consumer to pay. Also, as it's been discussed, the MKIII doesn't have the greatest setup to allow for such a system. You've simply got to look at what's going to get the job done, then be concerned with the style issue.


Yes the cost would be greater, but there is more than just aesthetic advantages to a DD type system. Yeah a 4" exhaust is great, but what do you think will flow more a 4" system or a system that is 3.5" for about 2' that then splits into two 2.75". Two 2.75" pipes will definitely outflow a 4" system and perform almost like a 5" exhaust without having to sacrifice piping clearance issues. Since I plan on lowering the car with H&Rs the clearance issues of a true 4" exhaust concerns me, it was just an idea though. It doesnt appear as if it is possible on the supra though, (I tried to find an underbody pic of a 240 for comparison sake, but couldnt locate any on the net) but I would still love to have a dual tip muffler and 3.5" mandrel bent piping at the least.

[drunk_medic]

You can get a stainless Tanabe "fart can" with a 90mm inlet and 115mm outlet. Ought to be good for 3 1/2 inch piping, if you can get a custom exhaust done. Seems like you will have to have a shop make custom flanges. Nobody seems to sell 2-bolt exhaust flanges over 3" ID.

[Orion ZyGarian]

http://www.driftday.com/dd_alone_T.jpg
http://www.whifbitz.co.uk/images/parts/greddy/ddmuffler.jpg

OMFG! I'd hit that left and right!!! If you sold this as a bolt on to your regular 3" DDP splitting into 2", all mandrel bent, I'd bow down to you even MORE:x: and buy it right away without question
http://www.tamparacing.com/forums/tamparacing/smiles/bowdown.gifhttp://www.tamparacing.com/forums/tamparacing/smiles/bowdown.gifhttp://www.tamparacing.com/forums/tamparacing/smiles/bowdown.gifhttp://www.tamparacing.com/forums/tamparacing/smiles/bowdown.gifhttp://www.tamparacing.com/forums/tamparacing/smiles/bowdown.gifhttp://www.tamparacing.com/forums/tamparacing/smiles/bowdown.gifhttp://www.tamparacing.com/forums/tamparacing/smiles/bowdown.gifhttp://www.tamparacing.com/forums/tamparacing/smiles/bowdown.gifhttp://www.tamparacing.com/forums/tamparacing/smiles/bowdown.gifhttp://www.tamparacing.com/forums/tamparacing/smiles/bowdown.gifhttp://www.tamparacing.com/forums/tamparacing/smiles/bowdown.gifhttp://www.tamparacing.com/forums/tamparacing/smiles/bowdown.gif

[SP 7M]

Yes the cost would be greater, but there is more than just aesthetic advantages to a DD type system. Yeah a 4" exhaust is great, but what do you think will flow more a 4" system or a system that is 3.5" for about 2' that then splits into two 2.75". Two 2.75" pipes will definitely outflow a 4" system and perform almost like a 5" exhaust without having to sacrifice piping clearance issues. Since I plan on lowering the car with H&Rs the clearance issues of a true 4" exhaust concerns me, it was just an idea though. It doesnt appear as if it is possible on the supra though, (I tried to find an underbody pic of a 240 for comparison sake, but couldnt locate any on the net) but I would still love to have a dual tip muffler and 3.5" mandrel bent piping at the least.
Why would you even be concerned with something that will out-flow a single 4" pipe? Are you the next Ryan Woon? To bring up an insignificant [supposed] testimonial such as that is purely arbitrary. Don't get me wrong, even if I do seem to be ragging on you, I'm not (that hard). But it is necessary to keep things within reason. Do you get what I'm saying?

As ma71supraturbo has already said, it just isn't logical or easily possible to have dual pipes all the way to the rear end of a MKIII. Did you miss that? On that same note, a 4" pipe will clear next to the differential better than two 2.75" pipes. Two pipes would have to hang underneath your suspension parts, drastically reducing ground clearance. Also, a 3" dp is more to worry about on a lowered MKIII than an extra inch of pipe hanging between your rear wheels.

Ah, and I see we have an ass kisser amongst those of us that have posted here recently. I'm not going to get started on those kind.

[1TuffSupra]

Why would you even be concerned with something that will out-flow a single 4" pipe? Are you the next Ryan Woon? To bring up an insignificant [supposed] testimonial such as that is purely arbitrary. Don't get me wrong, even if I do seem to be ragging on you, I'm not (that hard). But it is necessary to keep things within reason. Do you get what I'm saying?

As ma71supraturbo has already said, it just isn't logical or easily possible to have dual pipes all the way to the rear end of a MKIII. Did you miss that? On that same note, a 4" pipe will clear next to the differential better than two 2.75" pipes. Two pipes would have to hang underneath your suspension parts, drastically reducing ground clearance. Also, a 3" dp is more to worry about on a lowered MKIII than an extra inch of pipe hanging between your rear wheels.

Ah, and I see we have an ass kisser amongst those of us that have posted here recently. I'm not going to get started on those kind.

Maybe u didnt read my reply close enough. I'm not trying to argue (just discuss), but I already stated that I knew it wasnt possible in my second post in this thread, which was when I saw the underbody pic of the supra and it was pretty much laid out for me. All I knew at the time was that the 240sx is also rwd and also has a similar rear differential and suspension setup and the pipes for the DD ran under the differential but still fit quite nicely, the exhaust seemed to have more of an effect on ground clearance with the 3" pipe at the front of the system than the 2 pipes running under the diff. And no Im not trying to be the next Ryan Woon (if fitting such an exhaust was possible on the mk3 anyway), but not only would the two smaller pipes flow more at upper rpm levels, but it would also increase midrange power, on an exhaust of comparable size, simply because it has two smaller pipes vs a larger single pipe and it would aid in the scavenging effect that is wanted in an exhaust system (atleast thats the way greddy/trust and the members at 240sx.org were explaining the system). Yes I said that the piping should be 3.5" and splitting into two 2.75" pipes, but that was simply based on the premise that the 200sx was the basis of the greddy system that started with 3" going into 2 2.5" pipes and that a 3 liter could actually benifit from the larger piping. So yeah my point may have been arbitrary, but the whole reason for me explaining that the exhaust was not just aesthetic was in direct response to the last line in your previous post, which is what I was really quoting. For comparison's sake here is a pic of a lowered 240 with the exhaust.

And as far as the flanges if I were to try and have it done locally, that could be fixed by welding a new flange on the downpipe and changing the cat. It might not be the same size as the stock cat but since the exhaust would be custom anyway that wouldnt matter too much.

And once again guys Im not trying to argue just simply trying to fully express my original thought process on the idea.

http://store1.yimg.com/I/yhst-1164098593086_1858_4222001

[SP 7M]

I know what you're saying. I just don't see how it would be a necessity to have anything that could provide more flow than a single 4" pipe. A vast majority of those who would buy a 4" cat back would not even be able to realize/maximize the flow capacity of such a system. Myself included. Once I get back to California and finally get my SP61GT installed, I'll go after my goal of 400 RWHP/400 Lb/Ft. RWTQ. A 4" system, other than just being killer in itself, will make it easier for me to reach that goal, but won't be mandatory. Whereas 500+ HP numbers would be more largely affected in a negative way by the use of a 3" (give or take) exhaust.

If I haven't posted it yet, here is a great writeup on the significance of exhaust diameter in high-horsepower cars. http://www.to4r.com/special.php?id=1

Enjoy!

[1TuffSupra]

That was a great link man, very informative. I do plan on going for big power though, atleast 550 whp on pump gas. Ive got a buddy with a 500whp gst that Ive got to take down, lol. And since no one really makes cams for our cars, atleast from what I can see, I plan on getting as much power from each mod that I can. I plan on shotpeening the rods, replacing the pistons, and bolting up a sp63. With the supporting fuel mods that should be good for attaining my goals.

[Orion ZyGarian]

Hey, I only kiss ass because he makes great stuff for the MkIII community when there arent many venders that do and I've been looking for an exhaust that isnt a big gay ricey fart can