Heads, Cam ,Lt headers done!
Thread Starter
Instructor
Joined: Feb 2004
Posts: 240
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From: Highlands Ranch Co
Heads, Cam ,Lt headers done!
I just picked up my 2002 A4 vert that Dragon racing here in Denver did a complete head, cam, and lg lt headers job on my car. The car dynoed at 410 rwhp and 412 rwtq. It is a beast to say the least. Things I wanted to point out for those of you thinking of going this way that maybe you did not here about. First the stock headers are thick solid cast steel and the new headers are of a thinner metal so there is a lot more valvetrain noise. Also the idle is very different than stock. This could be because I still have the stock coverter in my car and we had to make it idle at 800. So maybe if I was to change the converter to a higher stall, nothing to radical as I do not want that mushy feeling, like maybe 2600 it would help with the idle. I am looking for recomendations on the converter from all you h/c guys. As far as the power it is insane. It pulls just as hard at 100mph as it does at 10mph. I love the power but just need to work on the idle. The cam specs are as follows: 226,228,575,585,114. Any suggestions. Thanks.
Burning Brakes
Joined: Jul 2004
Posts: 855
Likes: 11
Originally Posted by patmo
I just picked up my 2002 A4 vert that Dragon racing here in Denver did a complete head, cam, and lg lt headers job on my car. The car dynoed at 410 rwhp and 412 rwtq. It is a beast to say the least. Things I wanted to point out for those of you thinking of going this way that maybe you did not here about. First the stock headers are thick solid cast steel and the new headers are of a thinner metal so there is a lot more valvetrain noise. Also the idle is very different than stock. This could be because I still have the stock coverter in my car and we had to make it idle at 800. So maybe if I was to change the converter to a higher stall, nothing to radical as I do not want that mushy feeling, like maybe 2600 it would help with the idle. I am looking for recomendations on the converter from all you h/c guys. As far as the power it is insane. It pulls just as hard at 100mph as it does at 10mph. I love the power but just need to work on the idle. The cam specs are as follows: 226,228,575,585,114. Any suggestions. Thanks.
Good numbers at that altitude. You should run at least a 2800 stall but your cam would like something closer to a 3800 stall. The 2800 will drive good on the street and will help with your idle.
Le Mans Master
Joined: Oct 2002
Posts: 6,799
Likes: 11
From: dudley MA
[QUOTE=patmo] First the stock headers are thick solid cast steel and the new headers are of a thinner metal so there is a lot more valvetrain noise. QUOTE]
never heard that one before. congrats on the new power
never heard that one before. congrats on the new power
Melting Slicks
Joined: Jun 2001
Posts: 2,743
Likes: 3
From: Davie Florida
Originally Posted by Dave_Busch
Good numbers at that altitude. You should run at least a 2800 stall but your cam would like something closer to a 3800 stall. The 2800 will drive good on the street and will help with your idle.
Could not agree more.
Race Director
Joined: Feb 2003
Posts: 11,133
Likes: 1
From: ~The DARKSIDE Group~
[QUOTE=pdd000]
Yep, the valve train is noiser, particularly at a cold start.
Originally Posted by patmo
First the stock headers are thick solid cast steel and the new headers are of a thinner metal so there is a lot more valvetrain noise. QUOTE]
never heard that one before. congrats on the new power
never heard that one before. congrats on the new power
Yep, the valve train is noiser, particularly at a cold start.
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Race Director
Joined: Feb 2003
Posts: 11,133
Likes: 1
From: ~The DARKSIDE Group~
[QUOTE=pdd000]
Yep, the valve train is noiser with headers, particularly at a cold start.
Originally Posted by patmo
First the stock headers are thick solid cast steel and the new headers are of a thinner metal so there is a lot more valvetrain noise. QUOTE]
never heard that one before. congrats on the new power
never heard that one before. congrats on the new power
Yep, the valve train is noiser with headers, particularly at a cold start.
Race Director
Joined: Aug 1999
Posts: 15,466
Likes: 0
From: GARDENA Ca, State Of Konfusion
St. Jude Donor '05
[QUOTE=pdd000]
Thats a first!!
With almost any cam change, you will need to increase the rpms, you will have to live with it. Mine idles at 875 out of gear and 825 in gear.
Originally Posted by patmo
First the stock headers are thick solid cast steel and the new headers are of a thinner metal so there is a lot more valvetrain noise. QUOTE]
never heard that one before. congrats on the new power
never heard that one before. congrats on the new power
With almost any cam change, you will need to increase the rpms, you will have to live with it. Mine idles at 875 out of gear and 825 in gear.
Melting Slicks
Joined: May 2003
Posts: 2,851
Likes: 1
From: San Bruno Ca
Choppy idle? Hey they must of pulled out that OEM paper roll out, and put in a real cam. Choppy idle is how you know that you got your moneys worth. Now the car runs better huh.
Last edited by Scubanme; Feb 4, 2005 at 11:00 PM. Reason: misspelled