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NA guys...anyone built your heads?? How much power are you seeing?

Old Jan 10, 2007 | 12:13 PM
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Originally Posted by TruBluZ
Finally doing more mods? Say Hi to my car when you go by there...

Yea, its been a good two months since my Z has seen its second home (SGP). With all my expenses lately (saving for wedding, christmas, taxes, house, 2 cars and a bike), I'm surprised I'm making it back this early. I need a freaking sponsor....Already dumped $15Gs in this car and she ain't even fast.

Don't worry, I'll be sure to say hi to Bluz....been eating alot of beans this week. lol
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Old Jan 11, 2007 | 08:55 AM
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Originally Posted by Cannysage
I maybe able to break 300whp with cams and a tune on a happy dyno.
Oh yeah I belive with all the bolt ons and maybe the JWT S1 cams with a great tune we can hit 300whp. Many cammed guys are in the 280-290 range. I think a cammed rev-up will be the 1st to hit 300whp.
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Old Jan 11, 2007 | 09:15 AM
  #23  
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I hope so.....If I can hit 350whp...I'll be in heaven....that translates into 420 at the crank. Not bad for a lil V6. Don't even get me started on what it would be on the dope. I don't wanna get wood while at work. lol
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Old Jan 11, 2007 | 09:20 AM
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Dope Is Good!!! Lol
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Old Jan 11, 2007 | 09:45 AM
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Originally Posted by Old School
I hope so.....If I can hit 350whp...I'll be in heaven....that translates into 420 at the crank. Not bad for a lil V6. Don't even get me started on what it would be on the dope. I don't wanna get wood while at work. lol
Ha, you will need all the help you can get...
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Old Jan 11, 2007 | 09:57 AM
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Originally Posted by TruBluZ
Ha, you will need all the help you can get...

keep talkin smack....I'm still faster! Holla at me when you hit 9s.

EDIT: You still plan on attending the event next weekend?
Attached Thumbnails NA guys...anyone built your heads??  How much power are you seeing?-750.jpg  

Last edited by Old School; Jan 11, 2007 at 10:01 AM.
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Old Jan 11, 2007 | 11:18 AM
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Originally Posted by Old School
keep talkin smack....I'm still faster! Holla at me when you hit 9s.

EDIT: You still plan on attending the event next weekend?
put down 261 uncorrected rwhp the other day, I think my headwork balanced out the drop to 8.6 compression ratio (NA built motor in preparation for dual turbos after this trip to the box) -- pretty good for someone who only has plenum spacer, nismo exhaust, JWT intake, pulleys, and HFC's other than the motor
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Old Jan 11, 2007 | 11:28 AM
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Originally Posted by Machupo
put down 261 uncorrected rwhp the other day, I think my headwork balanced out the drop to 8.6 compression ratio (NA built motor in preparation for dual turbos after this trip to the box) -- pretty good for someone who only has plenum spacer, nismo exhaust, JWT intake, pulleys, and HFC's other than the motor

Very good to know. I believe Rocks dropped his compression too in preparation for TT. Real good numbers for 8.5:1. Gives me a few ideas. lol. Thanks bro.
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Old Jan 11, 2007 | 12:10 PM
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Originally Posted by Old School
keep talkin smack....I'm still faster! Holla at me when you hit 9s.

EDIT: You still plan on attending the event next weekend?
How sad that you need 2 wheels to keep up with my slowness!

I'll let you know about the show. Nothing is set in stone just yet. Working on some ideas.
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Old Jan 11, 2007 | 12:16 PM
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Originally Posted by TruBluZ
How sad that you need 2 wheels to keep up with my slowness!

I'll let you know about the show. Nothing is set in stone just yet. Working on some ideas.

Take your DRs off and put some streets on there.....I'll go fill the bottle and we can run. Looser fills the winner's tank....deal? I don't mind loosing to a faster car, but you miss a gear or don't hook up....you'll never hear the end of it. hahahahahahha

oh wait...your car's in the shop...damn! lol
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Old Jan 11, 2007 | 12:45 PM
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I have lower compression 9.1:1 but i have jwt .450" lift cams and headers, no cats and stuff like that. I didnt feel the need to port and polish the heads as i have not seen any real information on what the stock heads actually flow compared to ported ones. I think im going to buy a bare one and send it off to a company and get an unbiased opinion just so i will know.

If i need to make more power when i turbo it ill just blow on it harder. Hopefully it will have a turbo with in 3 months, when i get some more money. Im doing a homemade turbo, i cant justify spending over 5k$ on the current kits when i can do it for 2k$ or less and make more power. I already have a big huge t04b turbo to play with, it cost me 100$. If i cant get enough power out of it ill send it off and have it modified for a few hundred $$ so i can get more power.

I really think if your going all out NA you should get at least some .476" lift cams, i think i have seen them that big before. 3.91 gears would be good too. I actually saw some 4.36 gears on a japanese site those would be nice. I think a mild port and polish with huge cams would give you good gains.
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Old Jan 11, 2007 | 01:22 PM
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Originally Posted by rocks
I have lower compression 9.1:1 but i have jwt .450" lift cams and headers, no cats and stuff like that. I didnt feel the need to port and polish the heads as i have not seen any real information on what the stock heads actually flow compared to ported ones. I think im going to buy a bare one and send it off to a company and get an unbiased opinion just so i will know.

If i need to make more power when i turbo it ill just blow on it harder. Hopefully it will have a turbo with in 3 months, when i get some more money. Im doing a homemade turbo, i cant justify spending over 5k$ on the current kits when i can do it for 2k$ or less and make more power. I already have a big huge t04b turbo to play with, it cost me 100$. If i cant get enough power out of it ill send it off and have it modified for a few hundred $$ so i can get more power.

I really think if your going all out NA you should get at least some .476" lift cams, i think i have seen them that big before. 3.91 gears would be good too. I actually saw some 4.36 gears on a japanese site those would be nice. I think a mild port and polish with huge cams would give you good gains.

Can't use 3.91s as I am sprayin - traction is an issue with 150 shot now as it is, lol. Will be spraying a 2 stage setup on the Z...150 down low and 300 up top. Heads coming soon. Bottom end after that.
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Old Jan 11, 2007 | 02:34 PM
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Wow, you guys are my envy man im trying to find out where im going to be soon i currently baselined at 251 (rev-up) dynojet STD . My future mods on my car will soon follow this route
injen track system ti (60mm) piping TD
Resonated test pipes
Strup Headers coated
Moderdyne 5/1/2 spacer iso thermal
3.59 final drive
utec
(cams are my final descion based on whats out there at the time)

When i see where that puts me i will then add a 100sht wet progressive

And with Drs should be intrested these are my plans. I def love the NA route however bad or worse.
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Old Jan 11, 2007 | 02:38 PM
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Here is the only Flow chart i have seen that shows what the stock heads flow. It also shows what the cosworth heads flow.

Hope it helps


Later
Todd
Attached Thumbnails NA guys...anyone built your heads??  How much power are you seeing?-cosworth-heads.jpg  
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Old Jan 11, 2007 | 03:37 PM
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Originally Posted by aceman
Here is the only Flow chart i have seen that shows what the stock heads flow. It also shows what the cosworth heads flow.

Hope it helps


Later
Todd

Hell Yea!!! Thanks Todd!!
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Old Jan 11, 2007 | 06:33 PM
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344 cfm is more than enough for the lift of cam i am using. Hell a 16 valve volvo head fully ported flows 260 cfm and is good enough for 600hp on a 4 banger.
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Old Jan 12, 2007 | 05:28 AM
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Without knowing what inches of water the heads were flowed at that chart is useless. If it was higher than the standard 28" the numbers will be inflated. If those are 28" numbers I don't see these heads really needing port work.
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Old Jan 12, 2007 | 07:16 AM
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I shall have an untuned dyno of what the Cosworth heads will do in a few weeks. I will post the results when I get them.
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Old Jan 12, 2007 | 09:13 AM
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Originally Posted by rocks
100mm pistons give you a 3.8 liter. Or do a shortstroke 3.2 and make a 9krpm motor.
you dont need to destroke to rev that high
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Old Jan 12, 2007 | 11:37 AM
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Originally Posted by Z1 Performance
you dont need to destroke to rev that high
I know the VQ35 rod/stroke ratio and piston speeds are still reasonable even when revving to 9K, but I don't see anyone out there doing so... is it because no one is making power that high up? What's the limiting factor, intake manifold design?
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