Guys , Ron @ Seibenick Racing now has for sale the 2.3 Custom J Body Headers ready ( see pics below ) and , very soon, 2.4 LD9 J Body Custom Headers. The 2.4 will be the same , except with the 2.4 flange welded to them. These are stepped headers, with 1 5/8 to 1 3/4 step to a 3 bolt flange collecter made from 18 gauge steel tubing and 3/8" thick flange. The 2.3 J Body headers are $515 plus shipping to you. We are still waiting for the pricing on making up the 2.4 flanges for those engines. We hope the price is the same as the 2.3 , then they will be the same price. As soon as I get the cost, will let everyone know. These J Body Custom Headers will fit the 95 thru 02 J Bodys.
See pictures, we are trying to verify the collecter length , before we finish welding that piece on. If anyone can help us verify that length , we would be very gratful. We are looking for the length from the stock convertor to the to the bend right in front of the subframe. To install the headers , the subframe needs to be modified so that the headers will fit . Ron Seibenick was asked me to help with pics and text on what modifications need to be done to the subframe. Once I get my hands on a header I can do a write up on install.
A special thanks to Scott Trent. Scott was nice enough to let us borrow the his header, if not for him letting us borrow it, this project would not have happened.
Ron @ Seibenick Racing
Edited 2 time(s). Last edited Monday, May 03, 2010 8:13 PM
Jason
99 Z24 Supercharged
157hp/171tq - NA
190hp/170tq @ 6psi
LG0/LD9 for Life
finally!!! wow, that look nice!
i will buy one this summer. what will be the turn around time for these?
is the subframe needs to be drop for installation?
can we get another bung welded for the wideband?
any idea what would be shipping to canada?
any coating available?
304 Stainless steel?
We had to drop my subframe to fit my RD Fabs header which is alittle shorter.
is this a 3" only outlet or is it possible to get this in 2.5" ... i think 2.5" is gonna be more productive for an N/A Application... secondly, are we able to get it with a second O2 bung for a wide band? (as stated above)
Those are sweet
~2014 New Z under the knife, same heart different body~
______________________
WHITECAVY no more
2012 numbers - 4SPD AUTOMATIC!!
328 HP
306 TQ
Magik1109 wrote:finally!!! wow, that look nice!
i will buy one this summer. what will be the turn around time for these??
Usually takes 2 weeks if we do not have a ready header to sell.
Magik1109 wrote:is the subframe needs to be drop for installation?
Yes, the subframe will need to be lowered for installation. Also lowering it will give you more room for the cutting you have to do to the subframe to make room for the header
Magik1109 wrote:can we get another bung welded for the wideband?
Yes, you can get a 2nd o2 sensor bung welded on. I will get you a price
Magik1109 wrote:any idea what would be shipping to canada?
No ideas on shipping cost to Canada yet. I will work up some estimates
Magik1109 wrote:any coating available?
Yes, coating is available. I will update my post when I get cost from Ron's coater
Tinkles wrote:304 Stainless steel?
We had to drop my subframe to fit my RD Fabs header which is alittle shorter.
They are made with 18 gauge tubing and a 3/8 flange
Jason
99 Z24 Supercharged
157hp/171tq - NA
190hp/170tq @ 6psi
LG0/LD9 for Life
Speedline02 (GME Chat!!) wrote:is this a 3" only outlet or is it possible to get this in 2.5" ... i think 2.5" is gonna be more productive for an N/A Application...
i think you missed this one =)
Speedline02 (GME Chat!!) wrote:Speedline02 (GME Chat!!) wrote:is this a 3" only outlet or is it possible to get this in 2.5" ... i think 2.5" is gonna be more productive for an N/A Application...
i think you missed this one =)
3" outlet only. The reason we needed the measurement was to give the owner room for a reducer before the cat.
Jason
99 Z24 Supercharged
157hp/171tq - NA
190hp/170tq @ 6psi
LG0/LD9 for Life
oh kyle grow a set. 3" is for men.
it worked for karo, works for paul, worked for pj. n/a likes 3".
looks great, jason. cant wait to order mine... going to be awhile though unfortunately. but i AM going to get one.
and lmao... yes, i did figure it'd be 2036 before we would see a long tube for a j-body so thanks for going forward in time and stealing one hahahahahaa
All I want... is a little of the good life
This header always makes me want to stay N/A.
brad: really????? i do remember you texting me and saying Paul's Header didnt do any bit of help to his dyno/qt-mile time ... so i rather try 2.5 and see if there is more of a gain... bigger isn't always better...
The squirrel was 3" which convinced me to go to it, If there is any loss for a 3" because its too big I never felt it. the top end loves it.
hmm m62 would like this
8 psi with m62 and IAT under 100
when ive saved up the $$ to redo the exhaust, i'll start a discussion thread about exhaust sizes, and see what we can come up with... looks like either way i should be good.. either header with 3" piping... or header + reducer + 2.5" piping
any chance there'd be an eco application?
LE61T PTE6262 Powered
this the same guy that made the 1's for the early quad cars that sat just off the ground ? if so any pics of his newest stuff installed ?
also for the guys worried about the collector size , most are 3" and you use a reducer after to drop it down to 2 1/2 ,1/4 or 2" , even pacesetters header is a 3" collector it just necks down for the ball socket
mitdr774 wrote:This header always makes me want to stay N/A.
Me too Clyde. This header would be good for SC cars as well. Kinda of wish I still had mine
Qwibby {T3H Old QBE} wrote:any chance there'd be an eco application?
At this time there are no plans for an Eco version.
[quote=97cavie24ls(™)]this the same guy that made the 1's for the early quad cars that sat just off the ground ? if so any pics of his newest stuff installed ?
Yes, this is the same guy that made those early headers. That design has been changed and they no longer hang "that" low. Only picture we have so far is this one
Jason
99 Z24 Supercharged
157hp/171tq - NA
190hp/170tq @ 6psi
LG0/LD9 for Life
kyle- pauls HEADER could be to blame for that. not necessarily the piping size. also... his head isnt THAT ported. someone with a big boy ported head would definitely benefit more from it than paul has on the current setup. plus he's only got HO cams. you have bigger cams so 3" is a must man.
All I want... is a little of the good life
well i'm only gasket matched on the exhaust side and polished
want... but i have an LN2
Ok, I'm not understanding at all what has to be cut on the subframe brace to accommodate this header.
Any pictures of where and what exactly has to be done?
Nice header.
Misnblu.com
Newbie member since 1999
Thank you Dave and JBO! 
its the 'hole' where the stock downpipe goes through. needs opened up some on the subframe side of things.
i know paul had to physically increase the size of the hole but he did it the other way and made a different shaped floor in the body itself.
All I want... is a little of the good life
Sounds like you'd be compromising the integrity of the subframe by doing this. Again, I'd have to see pictures of this to satisfy my curiosity and possible interest since I'm supercharging soon.
Misnblu.com
Newbie member since 1999
Thank you Dave and JBO!
at most it'd be a slight notch but im guessing its no more than a deep grind. plus you have those braces under there that go back.. as well as the 'z' brace so you'll be fine.
think of it as weight redux.
All I want... is a little of the good life
