| Author |
Message |
'75 308 GT4 (Peter)
Intermediate Member
Username: Peter
Post Number: 2192
Registered: 12-2000
| | Posted on Sunday, November 17, 2002 - 4:46 pm: | |
Matt, the Old-world craftsmanship disappeared with the 308. The exhaust headers are garbage. Certainly the thought was there, utilising equal-length tubing, but with the tubes just bent, leaving the inside surface all wrinkled up, is terrible. And there's no excuse because mandrel-bending technology was practiced years before then.
I think anyone here who attempts to make their own test-pipes will be doing a much better job that what was put out by the factory. |
Matt Morgan (Kermit)
Junior Member
Username: Kermit
Post Number: 71
Registered: 8-2001
| | Posted on Sunday, November 17, 2002 - 11:56 am: | |
Jeff, I am sure there was a miscomuniocation there. Aluminumized steel is commonly usedin exhaust. This is a coating to reduce/ pevent corrosion. IMO there is no way aluminum by itself would hold up. If it didn't outright melt the first time you put your foot in it, the material would be crack prone due to it's metalurgical makeup.
On the topic of DYI steel tubes, while I encourage and commend those who enjoy the satisfaction of doing there own,as do I. I would remind them that quality and Old World Craftsmanship is one of the trademarks of Ferrari. The workers in the Scuderia take great pride in the cars. Ask yourself, are you carrying on that tradition? So many auto manufacturers cut corners these days, it is a shame. Whatever your choice, take PRIDE in your Ferrari. |
jeff ryerson (Atheyg)
Junior Member
Username: Atheyg
Post Number: 77
Registered: 8-2002
| | Posted on Sunday, November 10, 2002 - 8:44 pm: | |
I spoke to a few shops in my area for my 328, quoted around $120 and they where to be made of aluminum which would seem better with weight and corrosion
The resonance reducers are usually steel wool or other packing material |
Barney Guzzo (Trinacria)
New member
Username: Trinacria
Post Number: 19
Registered: 8-2002
| | Posted on Sunday, November 10, 2002 - 12:27 pm: | |
Timevalve made my stainless test pipes and the quality was very good. Service was very good. Price was a little high but inline with Stebro. (Thay also made my stainless mufflers and pipes). Another nice addition was they wrapped the connecting pipes (from the manifold to the test pipes) with heat shield tape like used on race cars. http://www.timevalve.com/cat/ferrari/catidxf.html |
Edward Gault (Irfgt)
Intermediate Member
Username: Irfgt
Post Number: 2220
Registered: 2-2001
| | Posted on Friday, November 08, 2002 - 3:21 pm: | |
I do not know the part number, just take one of the converters and measure the flanges and they have a picture book that you can match them up. |
magoo (Magoo)
Advanced Member
Username: Magoo
Post Number: 3456
Registered: 2-2001
| | Posted on Friday, November 08, 2002 - 11:29 am: | |
Mike, In regard to the Stebro pipes, I haven't heard loud or harsh sounds yet from any of the cat to straight pipe conversions. I could never see the purpose of the Stebro pipes since there is little difference in sound from the cats to the straight pipes. JMO |
John Ames (Ameshouse)
Junior Member
Username: Ameshouse
Post Number: 69
Registered: 1-2002
| | Posted on Friday, November 08, 2002 - 11:00 am: | |
Ed,
Do you have the part number from NAPA on the flanges? |
Mike Charness (Mcharness)
Junior Member
Username: Mcharness
Post Number: 103
Registered: 8-2002
| | Posted on Tuesday, November 05, 2002 - 1:06 pm: | |
The Stebro pipes are "better" than plain straight-through test pipes. They'll sound less harsh, since they have a "resonance chamber" that deepens the sound. I love mine.
|
Erik R. Jonsson (Gamester)
Junior Member
Username: Gamester
Post Number: 177
Registered: 11-2000
| | Posted on Tuesday, November 05, 2002 - 9:35 am: | |
The cost involved is not in the stainless but the cutting and welding on the 348 in particular. I would charge the same if it were made of steel due to the custom machined flanges and the time involved in tig welding, drilling, flaring...
Besides I have a thing for making first class pieces which will outlast the car. |
magoo (Magoo)
Advanced Member
Username: Magoo
Post Number: 3400
Registered: 2-2001
| | Posted on Monday, November 04, 2002 - 11:57 pm: | |
Erik, Just a thought. As Ed says why don't you make them out of regular exhaust pipe and not use stainless? You could charge less and sell more of them then the guys who use S. Steel. Seems like overkill. |
Dave (Parts_man_soda)
New member
Username: Parts_man_soda
Post Number: 29
Registered: 8-2002
| | Posted on Monday, November 04, 2002 - 7:29 pm: | |
Have you tried www.hyper-flow.com ?
|
Bruno (Originalsinner)
Member
Username: Originalsinner
Post Number: 688
Registered: 5-2002
| | Posted on Monday, November 04, 2002 - 5:54 pm: | |
Stebro has them. with oxygen sensor connections.Look at my muffler post from about 3weeks ago. |
Christopher McCormick (92_348ts)
New member
Username: 92_348ts
Post Number: 36
Registered: 6-2002
| | Posted on Monday, November 04, 2002 - 5:48 pm: | |
FYI, I too have spoken with various muffler shops about having strait pipes made up for my car. What I found out (at least in my State) was that:
1) It is illegal for a muffler shop to physically replace the cats (currently on the car) with strait pipes, however they can fabricate the strait pipes so long as they do not do the installation once completed.
2) If the owner of a car has already removed the cats (himself), the muffler shop can fabricate AND install the strait pipes on the car.
Got to love loopholes... |
Christopher McCormick (92_348ts)
New member
Username: 92_348ts
Post Number: 35
Registered: 6-2002
| | Posted on Monday, November 04, 2002 - 5:28 pm: | |
Sam-I believe the oxygen sensors are located on the inlet side of the cats on a 348 (not both inlet & outlet as on many others). Because of this, the test pipes are simply fabricated with a threaded hole (usually a nut welded to the pipes) that the oxygen sensor screws into. |
Sam NYCFERRARIS (Sam)
Member
Username: Sam
Post Number: 361
Registered: 4-2001
| | Posted on Monday, November 04, 2002 - 10:36 am: | |
what do you do about the Oxygen sensors? On a 348 I think they run the whole damn car thorugh the ECU.
do they just sense heat inthe Cat of Oxy levels as well, will they misread w/o cats? |
David Albright (Dalbright)
Member
Username: Dalbright
Post Number: 413
Registered: 2-2001
| | Posted on Sunday, November 03, 2002 - 6:26 am: | |
I tried having a local muffler shop make some when I had my 348, but they got real nervous about it and probably thought I was with the police. They told me they didn't have any equipment to make them and that it was illegal. Told them it was for "track" use only, but they still wouldn't. Good luck. |
Erik R. Jonsson (Gamester)
Junior Member
Username: Gamester
Post Number: 169
Registered: 11-2000
| | Posted on Saturday, November 02, 2002 - 8:10 pm: | |
I manufacture test pipes from stainless steel. Email [email protected]
Thanks
Erik |
Edward Gault (Irfgt)
Intermediate Member
Username: Irfgt
Post Number: 2191
Registered: 2-2001
| | Posted on Saturday, November 02, 2002 - 8:06 pm: | |
There is no reason to make them from stainless steel. The three bolt flanges are available from NAPA and any good exhaust shop can use one of the cats as a pattern to fabricate the pipes. Probably everything for $50.00 or less. |
Jeff Green (Carguy)
New member
Username: Carguy
Post Number: 3
Registered: 10-2002
| | Posted on Saturday, November 02, 2002 - 6:55 pm: | |
Hello to All. Has anyone gone to a good muffler shop and had stainless test pipes made up? I'd like to remove the whole cat-system and take it somewhere to have the pipes made. Wouldn't this be cheaper than spending $400 to as much as $600 from an exhaust supplier? |