Thinking about doing DE headers
 

Hey guys, before I start I wanted to say Merry Christmas and Happy Holidays to everyone. I have a set for FI DE resonated test pipes from my old car (g35), I saw that some guys use DE headers with DE cats/tp/hfc on our cars. I wanted to know how is the fitment? gains? would you recommend it? Or should I sell my test pipes and get headers for a HR motor? From what I researched the gains on headers/test pipe are one of the greatest ways to get power on N/As

:merrychristmas:
:happyholidays:


Thank you

The DE headers that people have been using were the ones made by Momentum (which is no longer in existence). Z1 had the last 5 sets of these but they have since all been sold. Supposedly Z1 was going to start making these themselves but nothing so far.

Best bet is to call Z1 and find out the necessary details.

So other DE headers will not work? like stillen...

All DE style headers 'should' work on a 370Z. I will not say this with 100% certainty because we have not tried all available options. In theory, they should work. The key factor is that you must also purchase a set of DE style High Flow Cats, OEM Catalytic Converters or DE Test Pipes. The 3-bolt flange on the VQ37VHR headers' collector is different in shape than VQ35DE. However, the Test Pipe portion, when coupled with the headers, matches the 370Z perfectly. This same can be said in reverse configuration if attempting to put 370Z headers/test pipes onto a DE-style 350Z.

The Momentum Headers are one of the best on the market. Other DE style headers like those from Tomei Powered and so forth are also equally impressive in quality, but have not been tested on a 370Z.

We were investigating a few ideas when we discovered the gains brought about by using the Momentum Headers and were impressed.

Thank you any news on the Z1 headers? I was thinking about using the stillen DE headers with my FI DE test pipes

Sorry for the dumb question, but what does DE stand for? Also, DE headers fit on the 370, and you need DE style test pipes, but do the DE style test pipes fit on the 370z CBE? If so could anyone make any reccomendations on what brand is closest to Momentum? Thanks!

Yes, DE style test pipes, or DE HFC's will fit on a 370z CBE as long as you have DE style headers. Not sure what other brands of DE headers would be comparable to Momentum, since not very many people have experimented with this.

The 350z used the VQDE engine until it changed to the VQHR in 2007 I believe. Research my friend - Nissan VQ engine - Wikipedia, the free encyclopedia

Thanks! Ill look around and try to find something that will work for me. Ill keep you guys posted how it goes, and ill be sure to try to get some before and after dynos

basically you will be experimenting. the momentum headers may just be a special case for power gains but like said earlier, no one has experimented. other then momentum, there really is no reason to not just stick with 370z headers unless you want to be the one to experiment and dump money. the momentum header is very well built with an awesome collector. better then 90% of the 370z headers out there. other then that, the only real difference is flanges. if youve got time and money to burn then by all means enjoy. but 6-10 hours of labor, i would hate to be the one to research if it doesnt have any gains or if it doesnt fit to put the stock back on. my suggestions is momentum headers or just stick with 370z headers.

Ah i see :-( Maybe ill shark around the 350 forum and see if i can snatch some momentum headers up used...

Found some! Anyone know where i can find a picture of them to see if they are the same ones?

Here is the best picture I have of mine. In between the pipes on the flange, will have the letter "M" etched into it.

Those are it! I'm pretty excited to get everything. I am also getting a used FI exhaust, and was wondering the best place to get all the gaskets from engine back. Any input?

re-use the metal gaskets. They work just fine. Everyone I talked to said that the stock gaskets is fine to re-use and actually a better guarantee that it won't leak. My headers came with Berk gaskets. the FI exhaust will also come with brand new gaskets. If you are buying your headers from a vendor, they will come with new gaskets for header to cat. The exhaust will come with new gaskets from Cat to exhaust. All your gaskets should be covered.

Heres some shots of my headers also before they went on. You can definitively see the "M" in my picture

http://i184.photobucket.com/albums/x...ps6f6bda63.jpg

http://i184.photobucket.com/albums/x...psc93f71f5.jpg