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Author Topic:   header collectors
two89w
Gearhead

Posts: 319
From: sydney australia
Registered: Sep 2002

posted 09-14-2002 09:52 AM     Click Here to See the Profile for two89w   Click Here to Email two89w     Edit/Delete Message   Reply w/Quote
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

posted 09-14-2002 04:06 PM     Click Here to See the Profile for 65_289   Click Here to Email 65_289     Edit/Delete Message   Reply w/Quote
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

posted 09-14-2002 11:45 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
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

posted 09-15-2002 09:03 PM     Click Here to See the Profile for TomP   Click Here to Email TomP     Edit/Delete Message   Reply w/Quote
I disagree

Look 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

posted 09-15-2002 09:09 PM     Click Here to See the Profile for n2oMike   Click Here to Email n2oMike     Edit/Delete Message   Reply w/Quote
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

posted 09-16-2002 12:35 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
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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