UPDATE: Dual-groove pulley INSTALLED!!!
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xsrcivic@charter.net - send it there i'll throw it up
AHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHH
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has the lawsuit started yet
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has the lawsuit started yet
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From: NV
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Well here it is. I'm shocked by their stupidity. First off, milling the head is not a good way to go. And the places that do it only take off a TINY amount of material. Why is taking off a whole 1mm bad? Well it messes up ignition and cam timing by raising compression. Now even I know enough about this to say, why would you ever want to raise compression on a turbo car? I can't believe DH doesn't know this.
rscivic, don't worry. You'll win that lawsuit and get your money back. It's too bad you had to go through all that. I hope nothing happens to mine after the install.
rscivic, don't worry. You'll win that lawsuit and get your money back. It's too bad you had to go through all that. I hope nothing happens to mine after the install.
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From: NV
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The one in the front with black valves is the "good one," because it works. The one in the back, which has 1mm shaved off the top (as seen by the penny), is the DH head that is junk.
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From: Lake George, New York, US
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Thanks gearbox, I STILL have to get to the garage tonight and measure the ported head for you, if I don't PM you with it tonight, keep bothering me, OK? Been super busy. Yeah so there is the comparison, not too great huh? I have been told (and agree) that the ported head is useless to ANY car b/c specs say .2mm is max taken off the top...
I am meeting with my moms friend who is a lawyer sometime next week, she already has all of the paperwork (I kept everything which is good) and then I am going from there-
Like I said, now I can make the head into a nice planter or something since it is no good for anything else!
I am meeting with my moms friend who is a lawyer sometime next week, she already has all of the paperwork (I kept everything which is good) and then I am going from there-
Like I said, now I can make the head into a nice planter or something since it is no good for anything else!
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From: Halifax, Nova Scotia
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Is it possible to use more than one head gasket (3-layer ones) to lower the compression back down for turbo applications? And possibly rough up the intake ports with some heavy grit sandpaper?
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From: NV
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I guess it's too late, but I wanted to see how the stock intake ports look in terms of roughness. I'm also wondering about adding more gaskets. So why won't the 1mm work on any car? Too much compression?
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From: Lake George, New York, US
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Yeah, like you said Gearbox, raising compression on a turboed car is BAD..... the stock intake ports looked almost scored in a cross-hatch way to help with the incoming air.
I should add too that since the head was shorter the bolts bottomed out, not a great thing I am sure.
I should add too that since the head was shorter the bolts bottomed out, not a great thing I am sure.
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From: Chicago Burbs, Other, ZEBRA
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Originally Posted by gearbox
the intake ports are smooth instead of rough
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Originally Posted by gearbox
Me about to go postal on that stupid pulley 



Dude, put your goggles on before you start to kick ***.
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From: NV
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Lol. You want turbulent air for better combustion. The stock head intake ports have a cross hatch pattern to rough the airflow. DH ports are smooth.
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From: Lake George, New York, US
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FYI- measured stock head and ported head heights-
stock head=93mm
ported head=92mm (that is 1mm off and .8mm more than spec, or safety IMO)
Got off the pulley subject a little but it all seems to be the same issue at the end- bad product and forum members= screwed
stock head=93mm
ported head=92mm (that is 1mm off and .8mm more than spec, or safety IMO)
Got off the pulley subject a little but it all seems to be the same issue at the end- bad product and forum members= screwed
Registered!!
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From: Halifax, Nova Scotia
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There are still some of us with the DH Head that plan on using it, so let's just try to help us out because we already bought the things and would like to make them work at least.
So anybody out there know if we can use more than 1 gasket, rough up the Intake ports, and cut down the head bolts to make the **** work for us?
So anybody out there know if we can use more than 1 gasket, rough up the Intake ports, and cut down the head bolts to make the **** work for us?
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From: Lake George, New York, US
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Head shorter by 1mm than stock=bad
more than one gasket IMO= not the greatest idea
rough up ports= a good idea
Listen, I have been through all of this garbage with my head so I am going to share my situation....DH may have sent me the wrong head (for N/a car) who knows, but many people said when they saw the head that it is useless on ANY car
Find someone who can look at your head, check for these things and give you an honest opinion of it is safe to go on your car-- canadian2k1si, are you a F/I car? All the more important to check out this stuff-
http://www.7thgencivic.com/forums/sh...dh+racing+head
This should be a link to pics of my head, if you guys need any more to compare, let me know, I am more than happy to help since I was the guinea pig to get screwed from all of this...
Melissa
more than one gasket IMO= not the greatest idea
rough up ports= a good idea
Listen, I have been through all of this garbage with my head so I am going to share my situation....DH may have sent me the wrong head (for N/a car) who knows, but many people said when they saw the head that it is useless on ANY car
Find someone who can look at your head, check for these things and give you an honest opinion of it is safe to go on your car-- canadian2k1si, are you a F/I car? All the more important to check out this stuff-
http://www.7thgencivic.com/forums/sh...dh+racing+head
This should be a link to pics of my head, if you guys need any more to compare, let me know, I am more than happy to help since I was the guinea pig to get screwed from all of this...
Melissa
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From: NV
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Is there any way to rough up the intake ports? I have a dremel, but I don't think carving into the ports is a good idea. I'm going home soon to measure the head.
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From: so cal djmota=oscar
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Wow. It looks like melissa got an NA head...maybe they got yours mixed up with mine. I was the second person to get thier head. I picked mine up personally. I don't think that my head had that much material taken off. If it did, I am sure I would have noticed it. 1mm is too much for any FI engine.
Gearbox.... I thought that that my gasket would leak also, but to my surprise it didn't and still has not, even at the thin spots. Don't worry about the roughness of the intake ports. they are OK. I suggest thoroughly inspecting it And make doubly sure that all oil passeges are free of dirt/shavings. I have over 2000 miles on my DH head installed by me and no problems N/A. My only compaint about the head work is that they could have spent more time polishing the combustion chamber and the exhaust ports. But in the end I guess you get what you pay for. Now I am not saying that I would buy from them again. But I have yet to have a problem with the one thing they did sell me.
Gearbox.... I thought that that my gasket would leak also, but to my surprise it didn't and still has not, even at the thin spots. Don't worry about the roughness of the intake ports. they are OK. I suggest thoroughly inspecting it And make doubly sure that all oil passeges are free of dirt/shavings. I have over 2000 miles on my DH head installed by me and no problems N/A. My only compaint about the head work is that they could have spent more time polishing the combustion chamber and the exhaust ports. But in the end I guess you get what you pay for. Now I am not saying that I would buy from them again. But I have yet to have a problem with the one thing they did sell me.
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From: NV
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Well guess what...mine is exactly 92mm, so they took off an entire 1mm. I'm hoping it won't cause problems for NA. I'm not planning to turbo ever, so I'll still try and get it on. And I do have a cam gear to play with cam timing. We'll see what happens.
Another thing. Is a VAFCII enough for tuning, or do we need an adjustable fuel pressure regulator?
Another thing. Is a VAFCII enough for tuning, or do we need an adjustable fuel pressure regulator?
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From: Ontario
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10 thousandths= 0.254 mm, or one quarter of a millimetre
thus, 1mm off would be 40 thousandths. That is insane. I have a post out there regarding appropriate decking and the absolute most I'd go is 15thousandths. By the way, after talking to a Honda mechanic today, the most they can deck (mill) after a car overheats and warps the head is 2 thousandths. After that, due to emmision regulations, a new head is required. DR should know better, AND ON A TURBOED CAR!??
I offered to help out Josh (DR) with some positive posts on the site if he'd work me a deal on a product that actually worked. He said something to the effect of "Yeah lets do it" and only offered to shave $50 off his regular price. I found this even funnier because I had sent him a PM regarding pricing a month earlier and his price had gone up. In actuality, he was offering $25 off. Not an amount even worth the risk. Make no mistake, I'd think by now their tails are between their legs. However, if anyone here has decked their head on an all-motor car sucessfully, shoot me a PM as I can't decide between 10-15 thousandths.
Dallis
thus, 1mm off would be 40 thousandths. That is insane. I have a post out there regarding appropriate decking and the absolute most I'd go is 15thousandths. By the way, after talking to a Honda mechanic today, the most they can deck (mill) after a car overheats and warps the head is 2 thousandths. After that, due to emmision regulations, a new head is required. DR should know better, AND ON A TURBOED CAR!??
I offered to help out Josh (DR) with some positive posts on the site if he'd work me a deal on a product that actually worked. He said something to the effect of "Yeah lets do it" and only offered to shave $50 off his regular price. I found this even funnier because I had sent him a PM regarding pricing a month earlier and his price had gone up. In actuality, he was offering $25 off. Not an amount even worth the risk. Make no mistake, I'd think by now their tails are between their legs. However, if anyone here has decked their head on an all-motor car sucessfully, shoot me a PM as I can't decide between 10-15 thousandths.Dallis
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From: Halifax, Nova Scotia
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Originally Posted by rscivic
Head shorter by 1mm than stock=bad
more than one gasket IMO= not the greatest idea
rough up ports= a good idea
Listen, I have been through all of this garbage with my head so I am going to share my situation....DH may have sent me the wrong head (for N/a car) who knows, but many people said when they saw the head that it is useless on ANY car
Find someone who can look at your head, check for these things and give you an honest opinion of it is safe to go on your car-- canadian2k1si, are you a F/I car? All the more important to check out this stuff-
http://www.7thgencivic.com/forums/sh...dh+racing+head
This should be a link to pics of my head, if you guys need any more to compare, let me know, I am more than happy to help since I was the guinea pig to get screwed from all of this...
Melissa
more than one gasket IMO= not the greatest idea
rough up ports= a good idea
Listen, I have been through all of this garbage with my head so I am going to share my situation....DH may have sent me the wrong head (for N/a car) who knows, but many people said when they saw the head that it is useless on ANY car
Find someone who can look at your head, check for these things and give you an honest opinion of it is safe to go on your car-- canadian2k1si, are you a F/I car? All the more important to check out this stuff-
http://www.7thgencivic.com/forums/sh...dh+racing+head
This should be a link to pics of my head, if you guys need any more to compare, let me know, I am more than happy to help since I was the guinea pig to get screwed from all of this...
Melissa
Yes, I plan on running this head on a Torbo setup, as soon as I get me built block, & the rest of a long list of goodies.
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From: Ontario
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I wouldn't ever deck a motor 1mm (40 thou).
Stay with the 10-20 thou range for an all motor setup. I'm still awaiting a specific amount. It didn't really ruin the car because of the decking. You just don't want high compression in turboed cars.
Stay with the 10-20 thou range for an all motor setup. I'm still awaiting a specific amount. It didn't really ruin the car because of the decking. You just don't want high compression in turboed cars.
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From: Lake George, New York, US
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Yeah my car is OK now, running just like it did before the head ordeal.... you guys who are working to try to make this head be good for your car rock- after all of this s&it I am just giving up- not on the legal part though, believe me.
We figured I was running at least 11:1 compression on that motor, not bad, good plug for the resilience of Honda motors.
Good luck!
We figured I was running at least 11:1 compression on that motor, not bad, good plug for the resilience of Honda motors.
Good luck!
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From: NV
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I just got an AEM cam gear today. I was wondering if it should be at 0 to start, since now it's 2 degrees retarded. Don't know too much about it, only that it can adjust cam timing. Gonna have to get that tuned as well. But for now, it should be set to 0, right?


