Full race components?

[BDR Racing Development]

It's time for me to decide how heavy into this motor we're going to venture and the first thing on the list is the cylinder head. If we were to develop a few stages of heads, how far would you want us to go? We can do from a quick street port to the hands down, best full race head you'll be able to get. Would you want custom titanium valves or stainless? Would you want custom cams with them too? Pretty much everything is in the air and open to you guys. This is going to gauge what we look into and how far we want to push it. Thanks in advance for everyone's input!

 

[soulevo8]

I think it will be depend on the weak spot(s) and the potential gains. I'd like to see some tear down pictures and bench flow testing. Unless someone is building a full out track car, go for the low hanging fruit first.

 

[Chris]

Agreed. If you are just building something awesome I say go all out. If you are looking to build stuff that can then be sold to the community, cost obviously comes into play. How much gain per dollar will probably come into play.
I know for me, before I started looking at new race heads I would look at the flywheel. Is the stock one steel? How much weight could be saved by going aluminum?

 

[BDR Racing Development]

As far as weak spots in the motor, everyone is speculating right now, thats all stuff the community is still going to try to find. As far as potential gains, I'd say compared to any other heads that are ever offered...these would still outperform them (if we go the full development route. Just a quick port so people can save money? then the playing field is going to be closer just because anyone that gets lucky with a grinder can make basic gains). I'm saying this because the only other companies/people that are out there that can compete with our heads in the past, have shown no interest in making heads for the stinger....or any KDM for that matter lol. The cost is why we would probably offer the stages, obviously just a quick fluff n' buff being the cheapest (our average cost is about $200/cyl) while for someone out to really run with the big boys could easily spend upwards of $1000/cyl.
As an example, the current heads one my car were developed and a lot of the community members liked to talk shit and say that another company's heads were the best and I just wasted my time until I showed the gains. We were up 50cfm over the supposed "best" heads you could buy. Its mainly up to what you guys would want.

 

[Larry Denen]

I'm not sure what kind of power 'all out' would be but depending on how well tuned Stingers hold up I'd like to see 600 - 700 horse.

 

[BDR Racing Development]

I'm not sure what kind of power 'all out' would be but depending on how well tuned Stingers hold up I'd like to see 600 - 700 horse.

I wouldn't want to say a power number for an "all out" head because there's tons of factors that can go into a power number (I'd hate for some kid to buy a set expecting those numbers but not have anything else to support it and everyone write them off as junk because the kid had no clue what he was doing) but I'd be able to say what the head was capable of flowing on a na motor as well as its gains in cfm and about how much that would translate to boosted. With all of the stuff kia has into the motor, if we didn't see 6-700 out of a few I'd be disappointed.

 

[JimB]

Where are you located? I am interested in a set of heads but I need a lot more info. Do you have an email?

 

[GTB]

I wouldn't want to say a power number for an "all out" head because there's tons of factors that can go into a power number (I'd hate for some kid to buy a set expecting those numbers but not have anything else to support it and everyone write them off as junk because the kid had no clue what he was doing) but I'd be able to say what the head was capable of flowing on a na motor as well as its gains in cfm and about how much that would translate to boosted. With all of the stuff kia has into the motor, if we didn't see 6-700 out of a few I'd be disappointed.

I agree with the kids not knowing what their doing, I’ve read some eye opening stuff on here already...

 

[robz32]

In my opinon you need to get a car in which you can start doing R&D and developing the parts or at least find an owner willing to loan their Stingerfor this purpose.

 

[JimB]

That's why I was asking where they're located I might be willing to let mine be used for some R & D

 

[JimB]

My only issue is that I have to fight Nevada emissions laws so that limits certain components such as camshafts

 

[Dustin]

I have no emissions in my town for licensing purposes so no big deal for me. But on the topic of increasing HP....... not much can be done to the Stingers until the ECM has been cracked for tuning purposes. The first thing that will happen is you’ll go into over boost protection “limp mode” because the ECM will see to much boost pressure. It’s happening on Stingers with high flow exhaust with CAT deletes and no mufflers. How do you plan on getting around the obvious problem of not being able to tune the car yet?

 

[KLR STINGER]

Not sure your going to see much from heads on these cars. The exhaust side doesn't have traditional ports. There is only one merged outlet as the manifold is internally cast into the head. It's pretty much impossible to do traditional porting on the exhaust side. Most turbo cars don't gain alot from intake side putting, so all depends on gains realized vs cost. Turbo upgrades will be cheap and plentiful as the market builds. I'd say looking into forged bottom ends/hard parts might be better Play, or even turbo kit development might offer you a better market potential

 

[Kia Stinger]

Not sure your going to see much from heads on these cars. The exhaust side doesn't have traditional ports. There is only one merged outlet as the manifold is internally cast into the head. It's pretty much impossible to do traditional porting on the exhaust side. Most turbo cars don't gain alot from intake side putting, so all depends on gains realized vs cost. Turbo upgrades will be cheap and plentiful as the market builds. I'd say looking into forged bottom ends/hard parts might be better Play, or even turbo kit development might offer you a better market potential

I've heard the Stinger already has forged internals...

 

[KLR STINGER]

I saw those pictures torque posted, but not convinced they are forged yet. Need to see underside of piston to be sure. They do not appear to be hypereutectic cast as they do not have the goldish hue usually associated with hyper-u alloys. Rods are I beam forged, but could be powered metal forged, not from blanks. Tough to tell when they are coated. Would be great if both were forged and good for at least 5-700 whp

 

[Kia Stinger]

Would be great if both were forged and good for at least 5-700 whp

Yes, that would be great for 90% of the people who want more power out of the Stinger. I'll be nice to know for sure. Time will tell...