~380 shipped. I could make my own out of SS cheaper once my tig gets here. Its just a backup. But still, the port location on the engines this is "supposed" to fit are all the same so there should be very little variation.



My guess it that the flage was thicker and when they milled it flat it got thinner and the port inlets moved.



I know lots of 400hp people using this mani. Just wanted to point out to them that for a little effort they could gain some performance. And that HKS does not have a QA department.





<shrug>



GregW

Yes, this one fits nicely as well. Untill you ask the question of how well the ports line up. The restriction I am talking about here is not the mani as a whole but the fact that the ports dont line up. Thats where the restriction is.



I used a cutout to check how well it lines up. Would be interesting to see what you find on the divided mani when checking it this way.



Somone must have dropped the mold or something.



If I get bored I am going to give HKS a call just for giggles



GregW

Just called HKS USA. They really dont care is what I got from them. He asked me if I wanted to warranty it but was like whats the point.



Told him I just figured they would want to know they have a defective product.



His response was to tell me I should call the store I purchased it from for any further questions.



So there ya have it. Yep, HKS USA rocks!



"HKS has matured into a publicly traded company with an international sales and distribution network spanning Asia, Europe, Australia and the Americas to support its rapidly growing and ever-loyal worldwide customer base. The reason is simple: Whether it is engine, suspension, or drive-train systems, there is NO substitute for the performance, quality and reliability of HKS."



I worked in a foundry back in the day. Its an easy issue to fix if they cared enough to fix it.



Like I said, I knew this was a problem when I bought it. Just wanted to share with others that may be interested in this mani.



GregW

Thats interesting info. I had the divided manifold, seemed to match just fine and was of high quality. I'm not sure why you would want an undivided manifold if you are that concerned with performance?

i cant really see anything from the pics what exactly is the problem because i have the same manifold and a mig and tig welder available as well. and you said 15-20 hp gain where? porting the manifold?

your going to tig weld a cast iron manifold?

isnt that for aluminum?

you cant weld cast iron, very few cast irons can be welded using special processes, that grey cast iron definitly cannot be welded

Gas tungsten arc welding, or tungsten inert gas (TIG) is for welding alluminum,stainless steel, mild steel, magnesium,titanium, and deoxidized copper.

ditto