MjRocket

And do you know what these will cost?

hacker-pschorr

+1

Or have Marti sell them without any flange then you (Carl) can sell the headers with your X-pipe with V-bands.

Carl Fausett

I am working with MSDS to get that answer for you now.

MjRocket

Thanks Carl...I eagerly await.

MJ

mark kibort

Nice. still can get the bell housing cover off with these, right? what about 2 valver types? coming as well?
whats the net difference of this kind of merge collector vs the standard way that the devek level 1 and II did?

Carl Fausett

Yes.

I cant speak to that yet. The 16v sales numbers are even lower - makes it harder to invest in manufacturing them. For example: when the current batch of Y-pipes are sold out, Garrity at Motorsport UT has told me they will not be manufactured again. There hasn't been enough demand, and they are well made and price reasonably. I think we still have them in your choice of mild steel and stainless. This is a little different - the 16v header is still in production, so perhaps Marty will agree to make it with the new-and-improved merged collectors. I'll ask him his thoughts on this.

Someone else will have to answer this one. I have experience with the DEVEK headers on my 16v 928 race car, but no dyno charts with any other type in place, so no comparison data for you.

BUT I CAUTION YOU: it is very hard to get a performance increase number for before-and-after headers are installed. This is because they are almost never installed alone. Who installs headers and then makes special pipes to hook them up to their stock exhaust?

So, when I see header performance claims from end-users, I'm always skeptical because it is far more likely a dyno test of "headers-plus-the-custom-performance-exhaust-with-high-flow-mufflers that I installed" and not just a "header" installation. Making header-to-header comparisons is nearly impossible because they are not installed alone.

Nearly impossible. If you had a 928 engine on an engine dyno (not a chassis dyno) - THEN you could measure header x to header y and have some accuracy. But, nobody is doing that in this case.

It's just hard to test headers singly, without the whole exhaust system with it. And because of that you cannot be sure which gain is attributable to the headers, and which to the pipe sizing, cat delete, low-restriction mufflers, etc.

If you can find manufacturer tests that show what HP gain they got when they went from early collector to new merged collector (but same header, same engine) - then I think you'd have your answer.

mark kibort

thanks carl

Now, as a matter of fact, I did measure the before and after dyno runs on a stock exhaust system! (this was my 84 with no mods on it) I made a special adapter to attach to the stock cat. the HP gains for the headers into the same exhaust system, was 10hp. then, I pulled the stock stuff off and put on a 3.5" exhaust system and gained another 10hp.

Carl Fausett

Got the price back. There will be no price increase for the 32v headers with merged collectors.
I sell them here for $795 uncoated: http://www.928motorsports.com/parts/headers.php

Still no answer whether they will provide the merged collectors on a 16v header set. I'm sure if two or three 16v orders were combined, I could get that done.

Snowglobe

They are currently 500/pair, used, at 928intl. They also have them new for 900/pair.
For example,
http://www.mailordercentral.com/928i...111%20145%2005

MjRocket

Hey Carl these are the ones with the new updated collector correct?

Carl Fausett

Yes, that is correct.

ROG100

Interesting the Maltese Falcon headers look worse then the OBX headers quality wise and a ton more money and they are not even coated. They can't even be bothered to clean the swarf out of them. Bad tack welds as well and I fail to see how one tack weld seals the joint.
I will certainly continue purchasing the OBX headers as they are such great value for money particularly for customers in RHD countries as they can easily modify them to fit.
You pays your money and takes your choice - I will vote with my $$$$$