Latest Project - Headers

[jonesb930]

Motley911,

This is what I envisioned for my project. Nice work on the rear engine mount. When will you be putting this in the car? I would love to see what your clearance looks like around the turbo's. If all works well I may have Brian just do my secondaries the same as yours.

Bill

[RarlyL8]

Thanks for posting the pictures, I didn't want to do that without your approval.

Bill, your secondaries do look like that. I assume that if it is not perfect it is a great start that beats the heck out of build from scratch. I'll be talking to you about what else you might need to complete your setup.

[JBL930]

Originally Posted by motley911

For those that have been following my "RSR Update" thread - I haven't had a chance to update the thread for a while as I have been too busy working on the RSR - but I couldn't help myself to give a bit of an indication of what I have been up to lately.






The headers look and fit exceptionally well - thanks to Brian and Ben for some outstanding work.

Richard.

Can you point me in the direction of your build thread, engine looks great!

Brian, I know you're not doing anything for the 993 at the moment, which is a shame But was wondering what you thought of these from Fabspeed? I can't fit sport mufflers as i don't have the space, and my cat pipes with 100 cell cats alone is just too loud. Maybe these will be a good addition, but wanted to get your thoughts on whether they would be too restrictive?

[RarlyL8]

Jon,
Can you not use the muffler configuration I suggested?
The 993 "sport" exhaust will make your ears bleed. 993tt should be less loud with turbos.
You might look into an X pattern using large Cats and no mufflers. Big long large ID cats will quiet the engine considerably with turbos.

[JBL930]

Hi Brian, the pic above is for a 993 turbo, it just bolts onto the end of the cat pipe, it replaces the bulky muffler. The way mine is at the moment is as pictured below. Just the cat pipes crossing over each other and then straight out. No mufflers



These have 100 cell cats in there, but it's still horrible sounding, like a bloody boat engine! I thought maybe adding the muffler thingies pictured above (which bolt onto the end of the cat pipes and go up behind the rear wing a little) would reduce the noise. But was worried about them being restrictive. I don't have space for stock 993 turbo mufflers, tried it but no room.

[TurboKraft]

Originally Posted by JBL930

Brian, I know you're not doing anything for the 993 at the moment, which is a shame But was wondering what you thought of these from Fabspeed? I can't fit sport mufflers as i don't have the space, and my cat pipes with 100 cell cats alone is just too loud. Maybe these will be a good addition, but wanted to get your thoughts on whether they would be too restrictive?

Kudos on the engine swap, Jonathan!

A suggestion about a muffler for twin turbos -- how about a simple "X" muffler like this? We've done several of these setups on various Twin Turbos (930, 964, 993) with very nice results. It's quiet enough at idle but not as silent as stock, you can easily carry on a conversation in the car without shouting, and no droning or resonance. And 2.5" tubing might seem small to some, but we've dyno'd 657awhp with this exact setup -- so 2.5" isn't holding anything back.

In this case, it went into an old CTR chassis. The owner wanted cats for emissions and straight pipes for track days.
On another setup, we put the cats in line directly after the turbos, ala 996TT, then exited into the muffler.
In either configuration, we've gotten it to work with the four O2 sensors of the OBD-II.








Cool license plate, too!
Engine build and installation by Lee Rice, Rice's Performance.

[JBL930]

Thanks for the response Chris, i've copied your post over on my build thread so as not to take Brians thread off topic. Sorry Brian

[RarlyL8]

It's all related but thank your for that courtesy.
The system Chris pictured is the same configuration as the system I suggested; the only difference being the internals of the muffler. What I suggested was a MagnaFlow that has separate banks, one path/bank on top and one path/bank on bottom instead of an X flow where they meet in the middle. This may make no significant difference in your application. Chris may have tried this muffler and can answer that question.

[TurboKraft]

Originally Posted by JBL930

Thanks for the response Chris, i've copied your post over on my build thread so as not to take Brians thread off topic. Sorry Brian

Good call. Sorry for the poor etiquette, Brian, not intended to take it off subject.

Originally Posted by RarlyL8

It's all related but thank your for that courtesy.
The system Chris pictured is the same configuration as the system I suggested; the only difference being the internals of the muffler. What I suggested was a MagnaFlow that has separate banks, one path/bank on top and one path/bank on bottom instead of an X flow where they meet in the middle. This may make no significant difference in your application. Chris may have tried this muffler and can answer that question.

We've done that, too -- essentially one muffler stacked on top of another muffler, one per bank of cylinders. It's how MODE and others have done it in the past, too. If Magnaflow or Borla had a single canister that incorporated two straight-through pipes, or ones that crossed in an "X" without flowing through one another, I would have used that. But they don't offer such a muffler (or didn't when I first looked into it. The double mufflers works well, but is a little more complicated and expensive to fabricate.
And louder.
Initially I had real concerned about the two pipes flowing into one another in the "X" but it turned out to be a non-issue. It works great and sounds great.

[JBL930]

I'm looking for a simple bolt on solution if possible, hence the question about the Fabspeed muffler pipes. Chris, do you sell the system you pictured above, or is it built to order? And if it's "off the shelf" can you do anything about the tips, i'm not sold on the look at the back of that silver car.
Could it be made to look a bit more like mine does now, but maybe with the tips in a higher position?

[TurboKraft]

Built to order, sorry.
Yes, it can be tucked up a lot higher, and different tips used.

[JBL930]

With everything considered, and the fact that i have gone to the trouble of having 100 cell cats welded into the existing cat pipes, do you think those little Fabspeed muffler pipes would do the job? I can simply remove my little 90-degree muffler bypass pipes and bolt those onto the end of the cat pipes. I just don't want to add restriction, but i need to make it a little less loud.
I get people tapping on my window saying "I think your exhaust is broken, it's making a terrible noise".... To which i have to say "it's just loud, sorry"...
It sounds great when on the move, no issues AT ALL, it's just at idle

[RarlyL8]

OK now you're using the "F" word which makes me cringe. Back to headers ...

[JBL930]

Originally Posted by RarlyL8

OK now you're using the "F" word which makes me cringe. Back to headers ...

[911st]

[krasuskyp]

Originally Posted by JBL930

i'm not sold on the look at the back of that silver car.

ROFLMAO - kudos on your deft use of tactful diplomacy there Jonathan 8-). I was thinking the same - salivating like a hound over the pic of the bits scattered about - then recoiling in horror @ the look of the back end of that (otherwise fantabular!) car (no offense Chris).

Agreed too that yours now would look better up somewhat.

Also lol @ your "sounds like a boat" comment - I've always loved that about well built 930s 8-). Course they're someone ELSE"S and I don't have to live w/ it. But the boat bit is spot on... vessel-like!

ALSO lol @ the folks tapping on your window - hahahahaha.

And lastly, I def lol'd @ your plate - not just what it says but how it says it. It's so in your face bold, as if the car wasn't itself. Just awesome.

sorry >>>back to headers<<<

[Helmsy]

This may be a silly question and becon the biggest flaming of all time but.......

what is wrong with Fabspeed? They look puurrrdy and if they make it sound like a car again instead of a boat what is so bad?

Begin.

[RarlyL8]

Please, let's not begin that type of debate unless it relates to headers. There are several pages back that cover that argument pretty well.

I'm going to have a set of twins made up for my car as well and will bolt on a set of stock K16's and see how she goes. Should be pretty cool to compare systems.

[JBL930]

Originally Posted by krasuskyp

ROFLMAO - kudos on your deft use of tactful diplomacy there Jonathan 8-). I was thinking the same - salivating like a hound over the pic of the bits scattered about - then recoiling in horror @ the look of the back end of that (otherwise fantabular!) car (no offense Chris).

Agreed too that yours now would look better up somewhat.

Also lol @ your "sounds like a boat" comment - I've always loved that about well built 930s 8-). Course they're someone ELSE"S and I don't have to live w/ it. But the boat bit is spot on... vessel-like!

ALSO lol @ the folks tapping on your window - hahahahaha.

And lastly, I def lol'd @ your plate - not just what it says but how it says it. It's so in your face bold, as if the car wasn't itself. Just awesome.

sorry >>>back to headers<<<

Hi paul
I do occasionally have times when i'm diplomatic, doesn't happen often though
It's a funny thing with a turbo 911, there's a fine line between it sounding great, and sounding ****e. Mine sounds fine at anytime other than idle, where it's simply too much. Still not sure what to do yet, it's a shame the 993 mufflers don't fit, and i guess i'll never know if those Fabspeed mufflers will either. I'll have to get something fabbed up here in the UK somewhere.

Glad you like the plate, it came up for sale and i simply couldn't pass it up, probably paid too much for it but i think it really suits the car Although i'm not too sure on the black and silver, it should really have the normal yellow and black reflective type, but you don't know what looks good unless you try...

[RarlyL8]

Zorks exibit the same quality you are describing. They sound great once you get going but at idle it's just off.