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Author
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Topic: header collectors
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two89w
Gearhead Posts: 319
From: sydney australia
Registered: Sep 2002
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posted 09-14-2002 09:52 AM
   
is there any benefit to running 4 into 1 header collectors or is try y/s better??
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65_289
Gearhead Posts: 761
From:
Registered: Jul 2001
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posted 09-14-2002 04:06 PM
Tri-y's will help build torque at the expense of upper-rpm horsepower, IIRC. So if you are not spinning the engine very high, tri-y's might be ok.
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steve'66
Gearhead Posts: 9533
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 09-14-2002 11:45 PM
4-1 header collectors are better for h.p.We call tri-y's "why-try" headers for a reason.  Tri-y's are ok for a mild street car though. SteveW
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TomP
Gearhead Posts: 6120
From: Delta BC Canada
Registered: Dec 99
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posted 09-15-2002 09:03 PM
I disagreeLook at all the current NHRA Pro Stock cars ... Tri-Y's are in fashion again.
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n2oMike
Gearhead Posts: 2831
From: Spencer, WV
Registered: Jan 2001
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posted 09-15-2002 09:09 PM
I saw a set of those Pro-Stock headers. They were a FAR CRY from those generic 'shelby' why-trys you see offered for early mustangs. The shelby style headers are made from tiny 1-1/2" tubing that is simply welded together at the Y's without any real regard to a smooth merge. They use small tubes and an ineffecient design. They might be fine for the car show and mostly stock guys... but I'd leave them off a more serious engine. Those pro-stock tri-y's are a totally different animal in my opinion. Hedmans or Hooker's...  Good Luck! ------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
http://www.mustangworks.com/cgi-bin/moi-display.cgi?220
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Moneymaker
Administrator Posts: 27499
From: Lyons, IL, USA
Registered: May 99
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posted 09-16-2002 12:35 PM
The Pro Stock Tri-Y's are very scienced out and are designed to equalize pulses between cylinders. They are also HUGE. They are no where near the current crop of Shelby re-pop or Dougs commonly available Tri-Y "box" headers. Besides, this thread is about collectors isn't it? The 4-2-1 collector is not a Tri-Y header. ------------------
Alex Denysenko
Co-Administrator and Moderator/ non 65-66 Mustang owner sensitivity co-ordinator NHRA/IHRA/SRA/MCA member
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Part time secret agent license #0089
Professional Manwhore
The Barry of BarrysGrrl Quote: "I never met a magazine mechanic I liked."
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