Well after a month of trying to straighten the front end out I'm giving it up. The structural damage is to much. I'm having it looked at to see if the drive line is still straight if it is then I should have a mock up header set within the month for the ones interested still.

 

Yes typical power coating is only good to about 400, and that's pushing it. But there are "high Temp" powders good to 1000 degrees or Ceramic Coatings which are applied like a paint that are good for 2000 degrees.

Seeing as we are not running a turbo application it makes the coatings that much simpler as usually turbo setups run the hottest and have the hardest time keeping a coating on.

 

Sounds good. Please let us know when you get the first ones done? And good luck with your car!

 

The headers have already been built at least once maybe two times. That's not the problem.

The problem is selling them and having someone install them and actually get any real world results?? Dyno, Documented 1/4 mile type of stuff.

Take a look at the pictures in this thread. I think they were very well done!!

https://www.jaguarforums.com/forum/s...e-v-8-a-20791/

 

I'm interested provided we understand more on installation and cost.

 

Of course this is always an interesting topic, until the price is mentioned & then everything goes quiet. That's why i've been looking at what else is out there, that can be used, see https://www.jaguarforums.com/forum/g...-2l-s-c-80560/ I've got a pair of these on the way to me now, will keep everyone posted.

Just wanted to say something about those Stainlessworks headers for the LS, in my opinion they are/were undersized for what we want. The 2-1/4" collectors might have been fine for a 3.9L naturally aspirated engine, but for a 4.2L supercharged engine, potentially running up to 20lbs boost, they just seem too small to me...I mean we run 4-1's with 1-7/8" primaries & 3" collectors on naturally aspirated 351 Cleveland's in Australia...

I'd actually be more interested in a Shorty design of header for our cars, would still easily be a step-up over the stock log manifolds, but would be cheaper/easier to make & install, compared a tuned-length header that has to be pulled apart.

I'm no expert, but from what i've read the tuned length design only becomes an advantage for top end power, the shorty's give better low end & midrange torque.

Just wanted to put this out there, I wouldn't have bought those LS headers because of the small collectors, and anyway i'm having doubts if a long-tube design is the best option for us.

 

Thanks cambo. The shorty headers came to mind too. My exhaust shop can take the stock manifolds as a template for mocking up the flange and tubes for a shorty. Would you recommend 1 5/8" primaries to 3" collector?

 

Taxing my memory here, but I believe primary size on the old-school 2-valve V8's used to be based on the size of the exhaust valve. Maybe it's different with the modern 4-valve heads?

Anybody know the diameter of the exhaust valves on the AJ33S?

The other limitation is the size of the exhaust port, if the port itself is only 1-5/8" then it does it make sense to have a bigger primary on the header?

As for the collector, at least 2-1/2" maybe 2-3/4", not sure if 3" could be too big on a Shorty design...

Where are Avos & Count Iblis when you need them?

 

The branched tube of the N/A manifolds should flow better than the stock STR log manifolds. With some clean up around the ports, I'm betting a gain of 10+ chp and trq. Will the EGR tube bolt up to these manifolds?

 

The EGR tube connection appears to be in the same location, will know for sure when they arrive here.

 

Looking forward to knowing if fruits are born from your manifold swap. It sure sounds like an easy and logical swap.

 

I was wrong! It looks like the stainless steel versions are still being made and not a bad price! On sale at $820.

02-04 Ford Thunderbird Headers from Stainless Works at Andy's Auto Sport
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Oh If those fit I would be all over them. I kinda want to buy a set and just see if they fit my spare motor.

 

Well they will fit the motor. No doubt about that!!

The only question is will they fit the S Type. We really think they will but as you have read in this long thread we never got anyone to try it. The Lincoln LS guy that did install them said never again!!

So we know it's a tight fit. Also the whole BIP header thing was so disappointing. Almost no power gain for all that money. Maybe the STR will not gain much from headers??
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I think the BIP headers gain was pretty good all things considered,

you'll need more than the stock blower to take advantage of those headers, the factory eaton is already near its flow limit, the stock headers aren't all that restrictive for stock power levels,
basically, the $2,000 headers go perfect for the guy with the $10,000 twin screw build.

 

A pair of shorty headers or n/a S-Type exhaust manifolds are doable on the "S" and IMO all she'll need.

 

If anybody wants see the first and only header install on a Lincoln LS. It has a number of pictures and they look pretty cool!!

Headers In! - Lincoln vs Cadillac
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Thanks tbird6. I had forgotten to link that to the original header thread.

 

Going to ask my exhaust fabricator about a pair of shorty headers with 1 5/8" primaries to 3" collectors.