A couple pics of my Tri Y headers
10-29-2006, 09:35 AM
#2
Le Mans Master
Nice looking pipes. Thick flanges - 9 or 10 mm (3/8")?
I searched but didn't come across recent discussion of these.
Can you provide a link to earlier information about the manufacturer,
dimensions, period they were made and so on.
Thanks
Ken R.
.
I searched but didn't come across recent discussion of these.
Can you provide a link to earlier information about the manufacturer,
dimensions, period they were made and so on.
Thanks
Ken R.
.
10-29-2006, 09:45 AM
#3
Le Mans Master
Thread Starter
No links for ya sorry mate, these are a "custom made for the car" type job. (with my car being right hand drive, any LT headers will easy fit the left side, but the right side is abit tighter than normal)
Here are a few specs for ya though, i just measured them then.
10mm flanges
1.5" primaries
2" secondaries
2.5" final
Here are a few specs for ya though, i just measured them then.
10mm flanges
1.5" primaries
2" secondaries
2.5" final
10-29-2006, 10:23 AM
#5
Le Mans Master
Thread Starter
Originally Posted by stubbs
Right hand drive? I didn't know they were even built RHD? Where was the car originally purchased?
There were 3 RHD ZR1s built in 1991. The rest over here are converted to right hand drive or we cant use them on Australian roads in most states. They all rolled out of the BG plant complete and left hand drive like every other C4, and most are bought new by US owners, very few C4s came straight here brand new. (the 3 ZR1s that BG plant built right hand drive were made for Australian export) If i put one of the factory RHD 91 ZR1s and a factory LHD converted to RHD 91 ZR1 in front of you, you would not know which was which if the converted car was done properly.
Here is a link to my 94http://i11.photobucket.com/albums/a1...Classic018.jpg
Last edited by Casethecorvetteman; 10-29-2006 at 10:28 AM.
10-29-2006, 10:27 AM
#6
Safety Car
Originally Posted by Casethecorvetteman
There were 3 RHD ZR1s built in 1991. The rest over here are converted to right hand drive or we cant use them on Australian roads in most states. They all rolled out of the BG plant complete and left hand drive like every other C4, and most are bought new by US owners, very few C4s came straight here brand new. (the 3 ZR1s that BG plant built right hand drive were made for Australian export) If i put one of the factory RHD 91 ZR1s and a factory LHD converted to RHD 91 ZR1 in front of you, you would not know which was which if the converted car was done properly.
10-30-2006, 12:49 AM
#10
Le Mans Master
Member Since: Aug 2002
Location: Ventura County, CA
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St. Jude Donor '05-'06,'07-'08-'09-'10-'11-'12-'13-'14-'15-'16-'17-'18-'19-'20-'21-'22-'23
Looks like some good work went into them
Last edited by ElisTwoCents; 10-30-2006 at 01:13 AM.
10-30-2006, 07:22 AM
#12
Le Mans Master
Thread Starter
Originally Posted by Invanity
Looks like some good work went into them
10-30-2006, 06:11 PM
#13
Le Mans Master
Most states in Oz have or had pretty rigorous rules regarding
vehicles & 'road worthiness'. An inspector once punched a hole
in the rocker panel of my Falcon panel van and then denied my
application for registration renewal.
By the same token, not just anyone can convert a LHD car to RHD.
IIRC, it has to be done by, or at least signed off by someone with an
'engineer' designation.
Case, do you know the history of this car and who performed the
conversion? My guess is that headers make the conversion easier
than trying to retain the OEM manifolds. Perhaps the organization
went to the trouble of tooling up or outsourcing for several sets.
Stingraynut, rodj, AusJoe and Aussie Vet provided some information
about RHD conversions last year in this thread
BTW - If memory serves, Mickey Thompson offered the first
commercially available Tri-Y headers for North American V8's in the
mid-late 60's. Back then (like now?) many people followed the 'more
is better' mantra and sought peak power at the expense of total power
under the curve. The M/T Tri-Y never enjoyed the popularity of the
4-to-1 design.
.
vehicles & 'road worthiness'. An inspector once punched a hole
in the rocker panel of my Falcon panel van and then denied my
application for registration renewal.
By the same token, not just anyone can convert a LHD car to RHD.
IIRC, it has to be done by, or at least signed off by someone with an
'engineer' designation.
Case, do you know the history of this car and who performed the
conversion? My guess is that headers make the conversion easier
than trying to retain the OEM manifolds. Perhaps the organization
went to the trouble of tooling up or outsourcing for several sets.
Stingraynut, rodj, AusJoe and Aussie Vet provided some information
about RHD conversions last year in this thread
BTW - If memory serves, Mickey Thompson offered the first
commercially available Tri-Y headers for North American V8's in the
mid-late 60's. Back then (like now?) many people followed the 'more
is better' mantra and sought peak power at the expense of total power
under the curve. The M/T Tri-Y never enjoyed the popularity of the
4-to-1 design.
.
10-30-2006, 06:58 PM
#15
Melting Slicks
I know this company called Clear Image Automotive (heres the website www.Clearimageautomotive.com) makes 'Tri Y Headers' for the Impala SS. They are a sweet set of headers I dont know if they fit the C4 though. Maybe if enough people inquire on them maybe Dan at Clear Image Automotive will put together a prototype.
10-30-2006, 07:30 PM
#16
Team Owner
Doug Thorley still makes Tri-Y headers and sells them thru Summit Racing. Unfortunately, they don't have a Corvette header.
The design of the TRi-Y header is supposed to make more torque over the lower RPM ranges compared to a typical 4 into 1 design that is designed for making HP.
The design of the TRi-Y header is supposed to make more torque over the lower RPM ranges compared to a typical 4 into 1 design that is designed for making HP.
10-30-2006, 09:05 PM
#17
Le Mans Master
Thread Starter
Originally Posted by Slalom4me
Most states in Oz have or had pretty rigorous rules regarding
vehicles & 'road worthiness'. An inspector once punched a hole
in the rocker panel of my Falcon panel van and then denied my
application for registration renewal.
By the same token, not just anyone can convert a LHD car to RHD.
IIRC, it has to be done by, or at least signed off by someone with an
'engineer' designation.
Case, do you know the history of this car and who performed the
conversion? My guess is that headers make the conversion easier
than trying to retain the OEM manifolds. Perhaps the organization
went to the trouble of tooling up or outsourcing for several sets.
Stingraynut, rodj, AusJoe and Aussie Vet provided some information
about RHD conversions last year in this thread
BTW - If memory serves, Mickey Thompson offered the first
commercially available Tri-Y headers for North American V8's in the
mid-late 60's. Back then (like now?) many people followed the 'more
is better' mantra and sought peak power at the expense of total power
under the curve. The M/T Tri-Y never enjoyed the popularity of the
4-to-1 design.
.
vehicles & 'road worthiness'. An inspector once punched a hole
in the rocker panel of my Falcon panel van and then denied my
application for registration renewal.
By the same token, not just anyone can convert a LHD car to RHD.
IIRC, it has to be done by, or at least signed off by someone with an
'engineer' designation.
Case, do you know the history of this car and who performed the
conversion? My guess is that headers make the conversion easier
than trying to retain the OEM manifolds. Perhaps the organization
went to the trouble of tooling up or outsourcing for several sets.
Stingraynut, rodj, AusJoe and Aussie Vet provided some information
about RHD conversions last year in this thread
BTW - If memory serves, Mickey Thompson offered the first
commercially available Tri-Y headers for North American V8's in the
mid-late 60's. Back then (like now?) many people followed the 'more
is better' mantra and sought peak power at the expense of total power
under the curve. The M/T Tri-Y never enjoyed the popularity of the
4-to-1 design.
.
