header question
Thread Starter
Pro
Joined: Jan 2001
Posts: 572
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From: LANG
header question
even i'm not owning a zr-1, i want to ask for your help. a friend of mine in austria (europe) want's to put performance headers on his zr-1.
any recommendations?
anybody going to sell his'/hers used/new perf. headers?
any help is appreciated.
greetings from detroit and the austrian corcette club international.
any recommendations?
anybody going to sell his'/hers used/new perf. headers?
any help is appreciated.
greetings from detroit and the austrian corcette club international.
Race Director
Joined: Dec 1999
Posts: 10,230
Likes: 885
From: Alexandria, Virginia, USA VA
Re: header question (scorpion)
jeals are a nice header, kinda pricey. Brian A. I believe is gearing up and making new headers. from what I know, watsons are now only available used. great mod, 20-30 HP without the cats and really helps high rpm breathing. I have used coated watsons, not as nice as the jeals, but still effective. factory manifolds aren't all that great, but not horrible either.
cats flow pretty well in comparison to other factory stuff IMHO. :D
cats flow pretty well in comparison to other factory stuff IMHO. :D
Race Director
Joined: May 2000
Posts: 17,101
Likes: 5
From: No more yankee my wankee, the Donger is tired!
Re: header question (scorpion)
Here are the Jeal headers. Easier for your buddy to pick up. They're made by Geoff Jeal in England.... email: 101621.3447@Compuserve.com
Watsons can only be had used and a very hard to come by.
Watsons can only be had used and a very hard to come by.
Burning Brakes
Joined: Jan 2001
Posts: 1,236
Likes: 175
From: IN
Re: header question (Rkreigh)
Ron, et al:
Yes, I am now building headers. I have shipped 5 sets to date. Build time is 4-6 weeks, cost is 895 plus 50 bucks shipping. These are all one piece primaries, 2" 304 stainless.
Yes, I am now building headers. I have shipped 5 sets to date. Build time is 4-6 weeks, cost is 895 plus 50 bucks shipping. These are all one piece primaries, 2" 304 stainless.
Burning Brakes
Joined: Jan 2001
Posts: 1,236
Likes: 175
From: IN
Re: header question (ZR WON)
Race Director
Joined: May 2000
Posts: 17,101
Likes: 5
From: No more yankee my wankee, the Donger is tired!
Re: header question (gmanZR1)
This may be a stupid question, but your headers won't work with the cats?
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Advanced
Joined: Oct 2001
Posts: 78
Likes: 0
From: Waldorf MD
Re: header question (scorpion)
I'm very interested in purchasing a pair of headers for my '91 ZR-1, but I'm very concerned about not passing emissions since the hearders don't allow for Cats. I have emission inspections every other year and don't want to risk failing. What are you guys doing to pass emissions? :confused:
[Modified by PWRHSE2K, 12:41 PM 12/5/2001]
[Modified by PWRHSE2K, 12:41 PM 12/5/2001]
Race Director
Joined: Dec 1999
Posts: 10,230
Likes: 885
From: Alexandria, Virginia, USA VA
Re: header question (PWRHSE2K)
I use random "bullet cats" the collectors of the watson headers I have are modified and shortened up just a bit to let the small cats fit where they should.
most headers also don't have provisions for the air injection. while not really needed IMHO to pass the sniffer test, they are part of the factory setup and a sharp inspector will fail you if you don't have them hooked up. most techs have never even seen an LT5 and since the engine covers up the exh pretty well, I think you may get by.
with the fresh random cats in place, the car should pass ok. just get it really hot with some "spirited" driving for a about 20 min before you go. I also sometimes throw a bit of alchy in the tank to clean it up. works well.
most headers also don't have provisions for the air injection. while not really needed IMHO to pass the sniffer test, they are part of the factory setup and a sharp inspector will fail you if you don't have them hooked up. most techs have never even seen an LT5 and since the engine covers up the exh pretty well, I think you may get by.
with the fresh random cats in place, the car should pass ok. just get it really hot with some "spirited" driving for a about 20 min before you go. I also sometimes throw a bit of alchy in the tank to clean it up. works well.
Drifting
Joined: Jan 2000
Posts: 1,623
Likes: 0
From: Katmandu, Nepal
Re: header question (PWRHSE2K)
As far as inspections, I usually get the $100 inspection, $50 for the inspection and $50 for the guy that passes you.
Otherwise, you have two options, use the bullet cats from Random and have a muffler shop install them or you can contact Marc Haibeck. He is in the process of designing some that have it so that the cats can be installed by anyone with a socket set and a set of wrenches. When the inspection is passed, you can replace them with a straight pipe supplied with the kit without having to remove the exhaust system.
Otherwise, you have two options, use the bullet cats from Random and have a muffler shop install them or you can contact Marc Haibeck. He is in the process of designing some that have it so that the cats can be installed by anyone with a socket set and a set of wrenches. When the inspection is passed, you can replace them with a straight pipe supplied with the kit without having to remove the exhaust system.
Melting Slicks
Joined: Jun 2001
Posts: 3,031
Likes: 1
From: Republic of Texas
Re: header question (ZR1)
Does anybody have any sotp or real numbers to show a benefit (or lack of) running headers w/o cats vs. stock manifolds w/ gutted cats? For stockers, 475hp, and 368s, as I assume the benefit get greater as the HP goes up.
Burning Brakes
Joined: Jun 2000
Posts: 1,065
Likes: 1
From: Redmond WA
Re: header question (PWRHSE2K)
The headers/cats Ron is using are the ones I used to have on my '90. It didn't need anything to pass emissions, passed them pretty easily (better than the old cats did). The trick is to get them to pass *without* cats :)
sirhC
sirhC
Race Director
Joined: May 2000
Posts: 17,101
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From: No more yankee my wankee, the Donger is tired!
Re: header question (91mongoose)
Here are the links to Brian's (ZR WON) headers....
http://www.corvetteforum.net/c4/jeffvette//headers1.jpg http://www.corvetteforum.net/c4/jeffvette//headers2.jpg http://www.corvetteforum.net/c4/jeffvette//headers3.jpg http://www.corvetteforum.net/c4/jeffvette//headers4.jpg http://www.corvetteforum.net/c4/jeffvette//headers5.jpg
Look good, not as shiny as the Jeal or Watsons, but look to be of good quality for a great price.
http://www.corvetteforum.net/c4/jeffvette//headers1.jpg http://www.corvetteforum.net/c4/jeffvette//headers2.jpg http://www.corvetteforum.net/c4/jeffvette//headers3.jpg http://www.corvetteforum.net/c4/jeffvette//headers4.jpg http://www.corvetteforum.net/c4/jeffvette//headers5.jpg
Look good, not as shiny as the Jeal or Watsons, but look to be of good quality for a great price.
Burning Brakes
Joined: Jan 2001
Posts: 1,236
Likes: 175
From: IN
Re: header question (Jeffvette)
Jeff:
THanks for posting the pics!!:) Re: the luster of the headers.. The Jeal's pictured are either 1)polished or 2)ceramic coated... Also, Watson headers are not shiny at all. They are 409 Stainless and when I received my set of two years ago they had already started to rust(409 stainless *will* rust). Both Jeal headers and my option are 304 Stainless. Again, thanks for posting the pics!!:) Still not sure why the url I posed doesn't work; I can type it in and it works just fine?!?!?!
THanks for posting the pics!!:) Re: the luster of the headers.. The Jeal's pictured are either 1)polished or 2)ceramic coated... Also, Watson headers are not shiny at all. They are 409 Stainless and when I received my set of two years ago they had already started to rust(409 stainless *will* rust). Both Jeal headers and my option are 304 Stainless. Again, thanks for posting the pics!!:) Still not sure why the url I posed doesn't work; I can type it in and it works just fine?!?!?!
Race Director
Joined: May 2000
Posts: 17,101
Likes: 5
From: No more yankee my wankee, the Donger is tired!
Re: header question (ZR WON)
No problem on posting the pics. geocities only allows you so much data transfer, they want you to pay for a business site which sucks. Have you tried polishing a set of yours up to see what kind of luster you can get? I might be picking up a pair this spring from you instead of doing the Jeal. Send me an email if you don't mind.... jeff2577@yahoo.com
Melting Slicks
Joined: May 2001
Posts: 2,159
Likes: 64
From: Nichols Florida
Re: header question (ZR WON)
Brian I knew I should not have let you take pictures of the ones I had smuggled from England! I do have a question about the different muffler connectors on each side. Why not use the rounded connector on both sides? Seems like it would make things easier, but both you and Jeff just use it on one side ???
Tyler
90ZR1
Tyler
90ZR1
Racer
Joined: Jul 2001
Posts: 446
Likes: 0
From: Chicago IL
Re: header question (ZR WON)
Jeff:
THanks for posting the pics!!:) Re: the luster of the headers.. The Jeal's pictured are either 1)polished or 2)ceramic coated... Also, Watson headers are not shiny at all. They are 409 Stainless and when I received my set of two years ago they had already started to rust(409 stainless *will* rust). Both Jeal headers and my option are 304 Stainless. Again, thanks for posting the pics!!:) Still not sure why the url I posed doesn't work; I can type it in and it works just fine?!?!?!
THanks for posting the pics!!:) Re: the luster of the headers.. The Jeal's pictured are either 1)polished or 2)ceramic coated... Also, Watson headers are not shiny at all. They are 409 Stainless and when I received my set of two years ago they had already started to rust(409 stainless *will* rust). Both Jeal headers and my option are 304 Stainless. Again, thanks for posting the pics!!:) Still not sure why the url I posed doesn't work; I can type it in and it works just fine?!?!?!
Le Mans Master
Joined: Nov 2000
Posts: 8,745
Likes: 31
From: SE TN
Re: header question (OldZR-1Guy)
Brian,
What about 02 sensors? Does your headers allow for them to hook up?
If the O2 sensors aren't connected or hooked up properly, that will set codes, right?
Thanks,
What about 02 sensors? Does your headers allow for them to hook up?
If the O2 sensors aren't connected or hooked up properly, that will set codes, right?
Thanks,