Nissan 370Z Forum  

Help! Cams, heads, boost and a million questions in my head

Originally Posted by SG4247 I would sure like to know more about the work done on the heads. Porting? Valve sizes? flow numbers? Who did the work..etc. Im a NA

Go Back   Nissan 370Z Forum > Nissan 370Z Tech Area > Engine & Drivetrain


Like Tree13Likes

Reply
 
LinkBack Thread Tools Display Modes
Old 01-26-2017, 08:50 PM   #16 (permalink)
Premium Member
 
SS_Firehawk's Avatar
 
Join Date: Oct 2011
Location: Tampa
Posts: 4,142
Drives: 13' Magma Red Nismo
Rep Power: 7335
SS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond repute
Default

Quote:
Originally Posted by SG4247 View Post
I would sure like to know more about the work done on the heads. Porting? Valve sizes? flow numbers? Who did the work..etc.

Im a NA guy myself, so very Im very interested in this thread!

There may be some good power to be had - in just the head work.
From what I understand, just valve springs and cams. Unless I was made of money, it would be difficult for me to take it all apart, port it, and put it all back together.

I most likely won't bump displacement considering the fact it's getting boosted down the road.

I understand what you're saying in terms of spinning the engine. My goal isn't to just spin it to the moon arbitrarily. I don't remember the formula, but you can determine your torque multiplication factor from one gear to the next to see at what rpm it's best to shift.

I'm certain that whatever rpm that is will be higher than before. Martin is a great tuner in my back yard, so he will most likely be handling the tuning aspect. I just dont like running in blind and run around ignorant during the process

Headers and retune are next as I plan how best to take the follow on steps. All the intake, exhaust, ported manifolds and TB's are already installed, just need retuned after Elmo and I get them on.
__________________
Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI
New Car: Under Construction

SS_Firehawk is offline   Reply With Quote
Old 01-26-2017, 09:00 PM   #17 (permalink)
Track Member
 
Join Date: Mar 2016
Location: San jose
Posts: 854
Drives: 2013 370z sport
Rep Power: 3384
Jhill has a reputation beyond reputeJhill has a reputation beyond reputeJhill has a reputation beyond reputeJhill has a reputation beyond reputeJhill has a reputation beyond reputeJhill has a reputation beyond reputeJhill has a reputation beyond reputeJhill has a reputation beyond reputeJhill has a reputation beyond reputeJhill has a reputation beyond reputeJhill has a reputation beyond repute
Default

Quote:
Originally Posted by SS_Firehawk View Post
From what I understand, just valve springs and cams. Unless I was made of money, it would be difficult for me to take it all apart, port it, and put it all back together.

I most likely won't bump displacement considering the fact it's getting boosted down the road.

I understand what you're saying in terms of spinning the engine. My goal isn't to just spin it to the moon arbitrarily. I don't remember the formula, but you can determine your torque multiplication factor from one gear to the next to see at what rpm it's best to shift.

I'm certain that whatever rpm that is will be higher than before. Martin is a great tuner in my back yard, so he will most likely be handling the tuning aspect. I just dont like running in blind and run around ignorant during the process

Headers and retune are next as I plan how best to take the follow on steps. All the intake, exhaust, ported manifolds and TB's are already installed, just need retuned after Elmo and I get them on.
I think when I was digging around at one time to see flow numbers of the head they were somewhere in the mid 300cfm range which is pretty dang impressive, which is probably why you don't see anyone doing port and polish jobs on these heads. Sorta like the Honda heads that are really hard to get gains and usually when you get in cfm you lose velocity and that sucks.
SS_Firehawk likes this.
Jhill is offline   Reply With Quote
Old 01-26-2017, 09:04 PM   #18 (permalink)
Track Member
 
blueranger's Avatar
 
Join Date: Aug 2012
Location: Albuquerque NM
Posts: 577
Drives: 2010 Roadster 7AT
Rep Power: 307
blueranger has a reputation beyond reputeblueranger has a reputation beyond reputeblueranger has a reputation beyond reputeblueranger has a reputation beyond reputeblueranger has a reputation beyond reputeblueranger has a reputation beyond reputeblueranger has a reputation beyond reputeblueranger has a reputation beyond reputeblueranger has a reputation beyond reputeblueranger has a reputation beyond reputeblueranger has a reputation beyond repute
Default

Quote:
Originally Posted by Jayhovah View Post
To answer your fueling question - a return setup with an Aeromotive 340 and 1000cc injectors should get you to 600whp on E85... I am sure some of the E85 guys on here can chime in and confirm or correct. You could also consult phunk he will know 100%.
I would not recommend the Aeromotive 340. I had fuel cuts running this pump and resolved the issue with the Walbro 450 pump. Also running 1000cc injectors (630-650whp).
SS_Firehawk and jchammond like this.
__________________
F.I. Stage 1 Twin Turbo #48 | E85 FlexFuel | Built 7AT | F.I. 34 Row Oil Cooler | F.I. Flex Plate | F.I. 19 row Trans Cooler | MT ET Street S/S | ECUTEK Tuned by Seb | RPM Roll Bar
blueranger is offline   Reply With Quote
Old 01-28-2017, 07:00 AM   #19 (permalink)
Premium Member
 
SS_Firehawk's Avatar
 
Join Date: Oct 2011
Location: Tampa
Posts: 4,142
Drives: 13' Magma Red Nismo
Rep Power: 7335
SS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond repute
Default

Alright, I know I'm missing something; things I still need to buy, minus small things...

Arp L19 head studs
New head gaskets (OEM?)
Call Phunk for fueling (E85 compatible rated at 600-700whp [future F.I. req])
Spend $$$ for install (I can hear my wallet crying)

... it just hit me, but I'm most likely going to need a new flywheel unless I want to see it self destruct. Might as well do the clutch at that point.

I didn't plan on tinkering with the bottom end unless absolutely necessary... Just concerned about the main bearings. It's a street car, so it's life will mostly be spent in traffic with some spirited driving. She will see the occasional drag strip and track day.

I have everything else covered.
ATI damper, oil pump gears, Z1 headers, ported TB's and manifolds, normal bolt ons, tuning...

The perfectionist in me wants to port the heads, but my wallet tells me it's foolish, considering they're all put together and won't be worth much more than a few hp lol. And that leads to a slippery slope of financial pain. Because then I'm going to want the EPS TB's, port them, upgrade the intakes to 2.75"-3", and more dumb, expensive stuff that's just a tiny bit better than what I have.

I'll update my journal when I get back stateside next month and have actual pictures to post.
__________________
Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI
New Car: Under Construction

SS_Firehawk is offline   Reply With Quote
Old 01-28-2017, 01:53 PM   #20 (permalink)
Enthusiast Member
 
Join Date: Nov 2016
Location: Youngstown, FL
Posts: 256
Drives: 2015 PW Nismo 6MT
Rep Power: 9
bcfromfl will become famous soon enoughbcfromfl will become famous soon enough
Default

Quote:
Originally Posted by SS_Firehawk View Post
This is Z #2, I know about pain and headaches. My last car was a wonderful nightmare
I've enjoyed reading and re-reading your build thread on your amazing twin SC Z #1. If you don't mind me asking, what made it a nightmare, and what considerations made you decide to go TT? Thanks!
SS_Firehawk likes this.
bcfromfl is offline   Reply With Quote
Old 01-28-2017, 02:12 PM   #21 (permalink)
Premium Member
 
SS_Firehawk's Avatar
 
Join Date: Oct 2011
Location: Tampa
Posts: 4,142
Drives: 13' Magma Red Nismo
Rep Power: 7335
SS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond repute
Default

Quote:
Originally Posted by bcfromfl View Post
I've enjoyed reading and re-reading your build thread on your amazing twin SC Z #1. If you don't mind me asking, what made it a nightmare, and what considerations made you decide to go TT? Thanks!
There always seemed to be a reason why the car was down on power, not by a little bit, but by 150+hp down. First it was the pulleys, then it was the bypass valves, then the stock tensioner pulleys went out. The AC compressor started acting up. I had gotten most of it fixed, but then when I got a decent asking price, I decided to go for it and learn from that. Money was tight and it allowed me to reduce the running costs until times were better.

Turbos on this platform have gotten to a point where it's mature and a reliable way to make power. To do the same with a supercharged kit, it's unknown territory at over 580whp. The Z doesn't need 500lbft of torque and centrifugal superchargers did great at keeping torque from reaching stupid levels. I would seriously consider supercharging again if it could take this car to turbo hp levels (600-650whp). Idk, honestly, it might be the better way to go. I'll cross that bridge when I get there lol.
__________________
Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI
New Car: Under Construction

SS_Firehawk is offline   Reply With Quote
Old 01-28-2017, 02:16 PM   #22 (permalink)
Premium Member
 
nomodsjk's Avatar
 
Join Date: Apr 2014
Location: martinsburg wv
Posts: 2,073
Drives: 2011 370z MB/7at
Rep Power: 19962
nomodsjk has a reputation beyond reputenomodsjk has a reputation beyond reputenomodsjk has a reputation beyond reputenomodsjk has a reputation beyond reputenomodsjk has a reputation beyond reputenomodsjk has a reputation beyond reputenomodsjk has a reputation beyond reputenomodsjk has a reputation beyond reputenomodsjk has a reputation beyond reputenomodsjk has a reputation beyond reputenomodsjk has a reputation beyond repute
Default

Quote:
Originally Posted by SS_Firehawk View Post
If I'm gonna be looking at cranks, I'd be looking at a displacement increase too lol, and that would be bad arse
Thats actually what i have...the bryant racing stroker kit. Im so excited about seeing what kind of numbers this thing makes. I saw brians post on Facebook. You got a hell of a deal. I wish to god he would have decided to part out a couple months ago it could have saved me a crap ton of money. Good luck with your build man im excited for you
SS_Firehawk likes this.
nomodsjk is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Sport/Nismo Tech + Aftermarket Head Unit Questions Overlimit Audio & Video 1 09-12-2016 04:42 PM
Vq35hr heads and vq37hr heads Elmo370z Engine & Drivetrain 2 07-21-2015 11:08 PM
Tinted Tails/Heads Questions ddvette9 Exterior & Interior 30 07-18-2011 04:08 PM
Nissan 240 Gold Plated Head/Cams Equinox Engine & Drivetrain 11 07-09-2010 09:36 PM
6cd Bose head unit Questions evse82 Nissan 370Z General Discussions 0 04-24-2009 12:56 AM


All times are GMT -5. The time now is 02:00 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 PL2