Where to buy a) Exhaust flex joint b) 2.5" flanges c) Who's using exhaus flex joints?

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MarkEmark
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Hey guys...

I'm going to be refabricating my downpipe soon, and I was wondering how many of you guys have flex-joints somewhere in your downpipe? (I guess this only applies to you turbo guys because I know the stock exhaust system/header - and aftermarket header - don't use such joints). They make sense--they allow a softer mount of the exhaust to the engine (in my case, turbocharger outlet) and will prevent vibration and absorb the expansion/contractions during warmup/cooldown. I think this could help prevent consistent bolt-loosening on my turbo outlet. How many of you guys use them? Looking around on the KA-T's, it seems like not many of you use the flex-joints. I know they aren't a necessity because I haven't been running one all along, and my hotshot header/tanabe catback exhaust don't have any flex joints in them.

1.) So, keeping in mind that one small flex-pipe is at LEAST $50, is it worth it for me to have one welded in while I'm doing the fabrication of the downpipes?

2.) Does it make a difference where in the exhaust you put these flex-joints? I'd either have it right on the downpipe section or on one of the "straight" sections beyond the downpipe.

3.) Where can you find these flex-joints, and reasonably priced? The ones that jcwhitney sells are too long...

4.) Why am I having SUCH trouble finding your basic 2-hole 2.5" exhaust flange? I've looked around on google for a while and am having trouble finding them--jcwhitney/jegs/summitracing don't sell the 2-hole flanges in 2.5" The places that I have found that sell them are charging like $12, which is a total rip-off if I need 6 of them. Plus, I've heard that none of the exhaust shops are willing to sell you their flanges--they wouldn't sell me some 02 sensor bungs. (bastarrds).

I found some flanges/flex-pipes at this site...but if you just take a browse on their "ordering" or "shipping" section, you'll become pretty intimidated by how complicated they make everything. Plus, the site seems to be pretty cynical in regard to customers...

http://www.roadraceengineering...s.htm

Anyway--Just want your guys' input, especially since I won't have my turbo outlet flange till late next week, even though I ordered it December 18th from JGStools.com...those fools weren't even gonna bother telling me that they didn't even have any in stock OR had any made up....


MarkEmark
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holy crap--no one's replied.

I guess I was expecting that.

Well, I'm fairly positive I'm getting that flex pipe, so I'll revise it and ask: WHERE CAN I GET 2.5" 2 BOLT EXHAUST FLANGES FOR RELATIVELY CHEAP?

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Dattebayo
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flex pipe = mad turbulence = not a good idea.You want the flow to be as smooth as possible coming from that area. You install that on a turbo system and you are going to make the turbine side unstable pretty quick. You could also backfire with that setup.

MarkEmark
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Ahh...you definitely misunderstood me. I'm not THAT dumb...

I'm referring to this: It's not convoluted like the flex-pipe you're referring to. Perhaps I should have labled it "flex-joint." This stuff comes stock on some turbo downpipes i've seen....Backfire, eh? Mine already does plenty of that

:ylsuper

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Camel
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MarkEmark
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thanks dudE--I already bought one for $20 from http://www.performance-curve.com

Marc

MarkEmark
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For those of you who were wondering--the exhaust is just about done.

Here's a pic of the old pipe (black) VS. the new pipe (silver). The second pic is a merged picture of the old pipe's welding quality vs. the new pipe's welding quality.

http://www.eniety.com/pichost/pic/124-2494_IMG.JPG

http://www.eniety.com/pichost/...e.jpg

Enjoy.

PS--All of the welding was done for FREE (well, I gave the guy $10 in Dunkin' Donuts gift certificates--he wouldn't accept money) by my friend's dad's co-worker. Not bad.


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