My DH-Racing PNP Head
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My DH-Racing PNP Head
Well, let me start of by saying I don't have it in hand. But I demanded pictures and I finally got a tracking number. I'm not even sure this is my head at all, but if so tell me if it looks decent? I'll put more pictures up when/if I receive it. I'm also going to bring it to Lightning Motorsports (Local speedshop) and see what they think about it. Well, here are the pictures.
Thanks all.
Thanks all.
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From: NV
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OMG! Our exhaust posts are NOT rectangular. I very much doubt that's for a D17. Other than that, it looks okay. The valve side is a bit rough. When (and if) you actually have the head in your hand, I can tell you what to look for.
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Rep Power: 0 I supposedly got a square port upgrade for free, All this falls upon deaf ears. I guess that's what it was. I just wanted some more power 
. At least it LOOKS ok from the pics though.
I bet I'm going to have to port match the header now or something though. Any ideas how much that will cost if I have to have it done? :/
. At least it LOOKS ok from the pics though.I bet I'm going to have to port match the header now or something though. Any ideas how much that will cost if I have to have it done? :/
Last edited by mootlif3; Aug 20, 2004 at 09:48 AM.
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From: Zulu Alpha Tango Foxtrot
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Originally Posted by mootlif3
I supposedly got a square port upgrade for free, All this falls upon deaf ears. I guess that's what it was. I just wanted some more power . At least it LOOKS ok from the pics though.
I bet I'm going to have to port match the header now or something though. Any ideas how much that will cost if I have to have it done? :/
. At least it LOOKS ok from the pics though.I bet I'm going to have to port match the header now or something though. Any ideas how much that will cost if I have to have it done? :/
Last edited by opto_isolator; Aug 20, 2004 at 12:25 PM.
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From: NV
Rep Power: 812 Haha. lol. Good luck port-matching a header to fit that. Dh is truly retarded. What were they thinking! And my round ports were huge compared to yours. Those look just like stock except square. But like opto said, you're gonna lose tons of power because of the shape. Try selling on ebay I guess, because I wouldn't install that.
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Rep Power: 0 I don't plan on wasting my money installing that or port matching a header or any of that crap. I'm just gonna save for a STi or something.
I paid by PayPal. I don't think I can get my $$ back since it's been so long
.
I paid by PayPal. I don't think I can get my $$ back since it's been so long
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From: Woostah
Rep Power: 413 It doesn't look that bad from the pictures... Port work is pretty even and smooth...
Then again, that might not even be the head you get...
Then again, that might not even be the head you get...
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From: Zulu Alpha Tango Foxtrot
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Originally Posted by Havok2k1
It doesn't look that bad from the pictures... Port work is pretty even and smooth...
Then again, that might not even be the head you get...
Then again, that might not even be the head you get...
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From: Woostah
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Originally Posted by opto_isolator
The actual work doesn't look that bad - but the fact that they made the ports so large? Air velocity will be lost - man that looks like the head off of a V8 big block or something!
LMAO, yeah, thats true.... Doesn't quite fit the motor too well....
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From: so cal djmota=oscar
Rep Power: 323 I have no idea why they would do something like that to a d17 head. If someone wanted to runs this thing they would need to get a header or turb manifold custom made. Nothing would bolt up. 
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From: Zulu Alpha Tango Foxtrot
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Originally Posted by SODJAZERO
That is not a d17 head. They sent you pics of that because they dont have yours ready.
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From: NV
Rep Power: 812 Well I don't know your situation about install. If you can put it on relatively cheap, you could just get a dremel and try to portmatch a header. It's not that hard at all, considering the ports are still small (just square).
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Rep Power: 0 I can either do it myself on the weekend (possiblity) or have a guy I know do it for $250 at his shop. I'm gonna look into maybe installing it if the ports aren't super large. I'm still gonna bring it to the local speedshop and see what they think.
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From: NV
Rep Power: 812 It's not bad, and the porting is very easy with a dremel. Just takes patience. Don't forget the gasket, too. I would say the head is probably better than mine. Ports are round, but huge. You can look at the pics in the thread I made a while back. At least yours are similar to stock...
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Rep Power: 0 I got my DH head last week and installed it. The ports were the same as yours. I have a biatch of a problem on exhaust leaks. When you port match the gasket to the head it does not leave the little lip around the exhaust manifold. It is hard to explain. But when you port match the corners of your gasket will be soo small you might end up with exhaust leaks.
I did the work myself and did not seal my cam seal good or something. I have an oil leak and for somereason am smoking pretty nasty. It feels like I lost power somehow. I cant figure out how but it just feels like loss on the top end. Should have been a big gain since I am boosted.
I am pulling it apart tommorrow and hopefully will dyno tune soon.
I did the work myself and did not seal my cam seal good or something. I have an oil leak and for somereason am smoking pretty nasty. It feels like I lost power somehow. I cant figure out how but it just feels like loss on the top end. Should have been a big gain since I am boosted.
I am pulling it apart tommorrow and hopefully will dyno tune soon.
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From: NV
Rep Power: 812 Guns, I sure hope they didn't mill your head for a turbo setup. Man that would suck. I think I might have some leak as well, because enlarging the gasket gets rid of those crush circles that are supposed to seal the passage. Oh well. Yeah and also it feels like I have better low end. Kinda strange, but it stops pulling after 4k rpms. Maybe it just needs tuning.
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Rep Power: 0 I got it in today and it actually looks fine. The square ports are pretty much stock size but just square. I compared it to an old gasket, not much needs to be dremeled away. I'm about to go bring it to a friend of mine's shop and lightning motorsports and get some more opinions on it. Maybe not all hope is lost, I don't know lol.
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From: NV
Rep Power: 812 Yeah that sounds promising. Bigger exhaust ports aren't that great for our cars. I can still feel a bit of backpressure loss, but there is some hp gain as well. I think yours would be perfect.
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Originally Posted by gearbox
Yeah that sounds promising. Bigger exhaust ports aren't that great for our cars. I can still feel a bit of backpressure loss, but there is some hp gain as well. I think yours would be perfect.
backpressure loss? What the hell are you talking about? Back pressure in an exhaust system is evil. You want to retain high exhaust velocity.
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Originally Posted by 4drcivic2k1
backpressure loss? What the hell are you talking about? Back pressure in an exhaust system is evil. You want to retain high exhaust velocity.
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Rep Power: 0 well, it depends on what you have done to the motor, but in the case of a stock motor no forced induction then the head is a worthless purchase. The only basis for putting large square ports in a head is simply mass flow quantity, such as the case of a high power motor. Oh and whoever was saying that the ports should be smooth is quite simply wrong. The intake port MUST have a semi rough surface otherwise fuel will stick to it and not atomize correctly. The exhaust port wont matter long enough for it to make any difference.
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Rep Power: 0 I brought it to lightning motorsports, they said the work looked great and should produce some top end power, although they too were kinda wondering why the ports were square.
