NuggetMonkey

Yes but I am curious if the patent only applys in US. I believe these headers are made in china or something. Mike says OBX fit in HS 5th gen almost perfect.
Thanks
jon

Kteller8

US patent can only be honored by a US based company..

for example, if your company is located, based and run in canada, your not obligated to US business laws...

if they have a station, or hub located in the US, they ahve to follow international and US laws.. but if they just "import" items.. they can do what they want in a weird way

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NuggetMonkey

Thats what I thought.. Remember the old 426 hemi? All the japanese makers copied that design, but no US makers did. Hence the patent not applying to overseas manufacturing.
Thanks
Jon

wolf22m

Mike,

I am interested in what you mean about the OBX having a mismatch between the primary and secondary pipes. I cannot see a difference in the matching of the cylinders. Do you mean a difference in pipe size?? Just curious Also what is your experience with Hotshot headers cracking? Are they prone to do this, or just after extended use and if so how long? Thanks in advance.

NismoPC

Well, what is interesting about that picture is the secondaries have been ported. On the OBX/Stoneracing header several of us received, the secondaries were not ported so the piping was actually a smaller diameter than the primaries.

If you buy this header off of eBay, don't expect to have it be ported like that one. Also notice that it does not have an AIV bung plug for the OBD-I SR20DE's. That seller is either using a picture of the first generation header they use to sell for only OBD-II SR20de's, or he is falsely advertising that this header will work with earler SR20's.

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choaderboy2

On the sample I had the holes in the secondary were smaller than the piping and the holes in the secondary so their was about a 1/8" step in the tube. Stuff like this usualy costs a bunch of power.

I have never seen a later than gen 4 HS header crack athough I suspect there was a bad batch of them made because a bunch of people I know in the NE have had them crack. Either that or its the difference in climate in the NE vs California. But none of the race cars we run has had a header carck and road racing is pretty hard on headers due to the extended high temps and vibrations.

Mike

NuggetMonkey

OBX and Stone are not the same header. Ask SSAUTOCHROME..Maybe they lie.
Thanks
Jon

NuggetMonkey

Mike I used a die grinder on my STone header. To fix these problems..But still like the HS better. It just seems nicer to me..I bet Naji will disgaree.hehhe
Thanks
jon

NismoPC

Yes they are. Part# is H9598. Unless there are 2 companies out there using the same HS copied jig and what not.

OBX:

H95980 200SX 95-01 2.0L DOHC n/a $399.00

StoneRacing

Prod.#
H9598 95-99 Nissan Sentra/200SX 2.0L SE-R Header Price
$229.95

NuggetMonkey

Lok at OBX writing on one. STone dont have that. Also at sschrome they said that the headers are not OBX. YOu do have a good point..Same jig..WHo knows..
Thanks
Jon

chris13bsr20

They're the same... they're both OBX. We just started saying Stone Racing was different since it was released with the changes requested by someone (aiv and O2 and some fitment changes I think). That pic above missing the AIV bung must have been one of the original obx ones. They all come with that flaw of the secondary step too. I didn't grind mine like I should've but eh, its fine unless you're trying to build a serious NA se-r and in that case, you'd want the best and this isn't it... HS gen 6 I guess would be the best out now.

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