Go Back  Rennlist - Porsche Discussion Forums > Air/Oil Cooled Technical Discussion Areas > 993 Forum
Reload this Page >

Has anybody figured out how to do the Ninemeister head upgrade in the States yet?

Notices

Has anybody figured out how to do the Ninemeister head upgrade in the States yet?

 
Old 11-10-2013, 08:23 PM
  #31  
KMASS993
Addict
Rennlist Member
 
KMASS993's Avatar
 
Join Date: Dec 2007
Location: Boston, MA
Posts: 1,306
Default

This may be a very simplistic view, but I was under the impression utilizing a 964 head on a 993 would give similar benefits (how similar I'll let someone else chime in) as the 9m setup. Something about the compression chamber on the 964 being better designed.

Can anyone chime in?
KMASS993 is offline  
Old 11-10-2013, 09:12 PM
  #32  
NP993
Addict
Rennlist Member
 
NP993's Avatar
 
Join Date: May 2001
Posts: 3,053
Default

Originally Posted by Kmassed002 View Post
This may be a very simplistic view, but I was under the impression utilizing a 964 head on a 993 would give similar benefits (how similar I'll let someone else chime in) as the 9m setup. Something about the compression chamber on the 964 being better designed.

Can anyone chime in?
Not possible because the exhaust stud orientation on one bank of heads changed on the 993 motors.
NP993 is offline  
Old 11-10-2013, 09:20 PM
  #33  
NineMeister
Addict
Rennlist
Site Sponsor

 
NineMeister's Avatar
 
Join Date: Oct 2002
Location: Cheshire, England
Posts: 4,344
Default

Several half truths there Kevin:
The 964 and 993 combustion chambers are identical.
The 964 port has a superior discharge coefficient (port flow per unit area) compared to the 993 head and with significant modification and larger valves it could be made to work pretty well.
However:
The 964 head will not fit the RH bank of a 993 engine due to the exhaust manifold flange bolt configuration.

The 9m billet head has (amongst other things):
Optimised intake & exhaust port profiles, better discharge coefficient, hence runs with higher port velocities and greater performance potential
A combustion chamber shaped to match the stock pistons for a more efficient burn control
Four bolt exhaust flanges


The package that other people refer to includes billet heads, valves, valve spring package, 9m Sport camshafts, 9m intake stacks (& modified Varioram manifold where appropriate), LWF, 100 cell cats and live ecu remap (55 pin only). Typical ROW 3.6 engines tested at 9m make around 345-350hp, 3.8 engines have made 360hp compared to stock VR engines at 300-310hp when remapped for 97+ Octane super unleaded.
NineMeister is offline  
Old 11-10-2013, 11:18 PM
  #34  
KMASS993
Addict
Rennlist Member
 
KMASS993's Avatar
 
Join Date: Dec 2007
Location: Boston, MA
Posts: 1,306
Default

Originally Posted by NP993 View Post
Not possible because the exhaust stud orientation on one bank of heads changed on the 993 motors.
Anything is possible. Cutting and re-welding the exhaust mounts seems like a cheap and easy task for anyone skilled and thus I doubt this would be the prohibiting factor.

Originally Posted by NineMeister View Post
Several half truths there Kevin:
The 964 and 993 combustion chambers are identical.
The 964 port has a superior discharge coefficient (port flow per unit area) compared to the 993 head and with significant modification and larger valves it could be made to work pretty well.
However:
The 964 head will not fit the RH bank of a 993 engine due to the exhaust manifold flange bolt configuration.

The 9m billet head has (amongst other things):
Optimised intake & exhaust port profiles, better discharge coefficient, hence runs with higher port velocities and greater performance potential
A combustion chamber shaped to match the stock pistons for a more efficient burn control
Four bolt exhaust flanges


The package that other people refer to includes billet heads, valves, valve spring package, 9m Sport camshafts, 9m intake stacks (& modified Varioram manifold where appropriate), LWF, 100 cell cats and live ecu remap (55 pin only). Typical ROW 3.6 engines tested at 9m make around 345-350hp, 3.8 engines have made 360hp compared to stock VR engines at 300-310hp when remapped for 97+ Octane super unleaded.
Colin - thanks for the info, I knew I most likely had some of it wrong!
KMASS993 is offline  
Old 11-11-2013, 04:53 AM
  #35  
saneproductions
User
 
saneproductions's Avatar
 
Join Date: Aug 2013
Posts: 364
Default

Originally Posted by NineMeister View Post
The package that other people refer to includes billet heads, valves, valve spring package, 9m Sport camshafts, 9m intake stacks (& modified Varioram manifold where appropriate), LWF, 100 cell cats and live ecu remap (55 pin only). Typical ROW 3.6 engines tested at 9m make around 345-350hp, 3.8 engines have made 360hp compared to stock VR engines at 300-310hp when remapped for 97+ Octane super unleaded.
Thanks for this info! Can this be done with non-varioram cars? What is the cost for all of the parts in this package shipped to the US?
saneproductions is offline  
Old 01-19-2015, 10:14 PM
  #36  
Chris M.
Addict
Rennlist Member
 
Chris M.'s Avatar
 
Join Date: Nov 2004
Location: Prospect, KY
Posts: 3,719
Default

Originally Posted by saneproductions View Post
Thanks for this info! Can this be done with non-varioram cars? What is the cost for all of the parts in this package shipped to the US?
Bump...
Chris M. is offline  
Old 01-19-2015, 10:25 PM
  #37  
MarinS4
Addict
Rennlist Member
 
MarinS4's Avatar
 
Join Date: Aug 2009
Location: Earth
Posts: 934
Default

I gotta go back in the motor and do the 9M heads this time around. It was a mistake not doing it the first time.
MarinS4 is offline  
Old 01-19-2015, 10:45 PM
  #38  
pirahna
Addict
Rennlist Member
 
pirahna's Avatar
 
Join Date: Sep 2004
Location: Santa Cruz, Ca
Posts: 3,822
Default

pirahna is offline  
Old 12-14-2016, 02:25 PM
  #39  
JPS
Addict
Rennlist Member

 
JPS's Avatar
 
Join Date: May 2002
Location: Manhattan
Posts: 4,471
Default

Did 9M ever come to the states?
JPS is offline  
Old 12-14-2016, 09:21 PM
  #40  
JZ98-993
Addict
Rennlist Member
 
JZ98-993's Avatar
 
Join Date: Jul 2010
Location: Charlotte, NC
Posts: 339
Default

Not officially, I've communicated with Colin as I'm planning to build out my RS tribute with the nvr stage 3 pkg (hopefully soon) You can order the kit from him, however the trick is the ecu. I have a 95 55 pin, it can be sent to him and flashed. The issue becomes the 96+ OBD II 88 pin cars which he cannot flash so you would need to get motec, etc. NP993 in this thread has successfully done the 9m package in the US and has been a wealth of information around it
JZ98-993 is offline  
Old 12-16-2016, 12:35 PM
  #41  
Coleman
User
 
Coleman's Avatar
 
Join Date: Jul 2002
Location: Cape Neddick Me.
Posts: 1,199
Default

I'm still saving up... I have a running joke with my friends; anytime we take a business risk that could result in a nice little income boost; we always say that it will go to a pair of 9M heads...
Coleman is offline  
Old 09-09-2017, 10:38 AM
  #42  
JPS
Addict
Rennlist Member

 
JPS's Avatar
 
Join Date: May 2002
Location: Manhattan
Posts: 4,471
Default

Anyone doing these over here regularly?
JPS is offline  
Old 09-09-2017, 11:40 AM
  #43  
fsa
Addict
Rennlist Member
 
fsa's Avatar
 
Join Date: Sep 2013
Location: Portland, OR
Posts: 525
Default

Jeff Gamroth at Rothsport in conjunction with Steve Weiner?
fsa is online now  
Old 09-20-2017, 02:21 PM
  #44  
GBX
Addict
Rennlist Member
 
GBX's Avatar
 
Join Date: Dec 2006
Location: LI
Posts: 1,572
Default

Originally Posted by JPS View Post
Anyone doing these over here regularly?
i think Geoff Ring has done a few, but only with Motec.

http://www.racetek-engineering.com/
GBX is offline  

Thread Tools
Search this Thread
Quick Reply: Has anybody figured out how to do the Ninemeister head upgrade in the States yet?


Contact Us - About Us - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: