Fordmods Logo

GT40p Heads for my EB sXR8 

 

Page 4 of 4 [ 53 posts ] Go to page Previous  1, 2, 3, 4

 
 Post subject: Re: GT40p Heads for my EB sXR8
Posted: Wed Jun 09, 2010 11:31 am 
Oompa Loompa
Offline
User avatar

Age: 34

Posts: 45

Joined: 9th Nov 2004

Gallery: 3 images

Ride: 98 au1 xr8

Location: perth
WA, Australia

have you done this process of putting gt40p heads on?
what did ya end up doing to get them to fit?
readin back over it i think there was a comment about ya have to get e series extractors to fit gt40p heads

 

_________________

au1 xr8 347ci votech v2 536.5rwhp

Top
 Profile  
 
 
 Post subject: Re: GT40p Heads for my EB sXR8
Posted: Wed Jun 09, 2010 12:04 pm 
Getting Side Ways
Offline
User avatar

Age: 33

Posts: 2282

Joined: 14th Jan 2005

Gallery: 8 images

Ride: ED Fairmont Ghia & EF XR8

Location: Melbourne
VIC, Australia

xr8m8 wrote:
have you done this process of putting gt40p heads on?
what did ya end up doing to get them to fit?
readin back over it i think there was a comment about ya have to get e series extractors to fit gt40p heads


there is no difference in the way the bolt up, due to diference in the steering rack and intermediate shaft au specified exhaust manifolds will not clear in an e-series engine bay. im am in the process of doing gt40p heads into en ef xr8 and am using pacemaker ph4000's. they bolt up just fine and still clear everything in the engine bay. Due to different spark plug angles on the gt40 heads 90deg igntion lead boots must be used.

 

_________________

Image

Top
 Profile  
 
 
 Post subject: Re: GT40p Heads for my EB sXR8
Posted: Wed Jun 09, 2010 12:26 pm 
Getting Side Ways
Offline
User avatar

Age: 33

Posts: 2282

Joined: 14th Jan 2005

Gallery: 8 images

Ride: ED Fairmont Ghia & EF XR8

Location: Melbourne
VIC, Australia

xr8m8 wrote:
have you done this process of putting gt40p heads on?
what did ya end up doing to get them to fit?
readin back over it i think there was a comment about ya have to get e series extractors to fit gt40p heads


there is no difference in the way the bolt up, due to diference in the steering rack and intermediate shaft au specified exhaust manifolds will not clear in an e-series engine bay. im am in the process of doing gt40p heads into en ef xr8 and am using pacemaker ph4000's. they bolt up just fine and still clear everything in the engine bay. Due to different spark plug angles on the gt40 heads 90deg igntion lead boots must be used.

 

_________________

Image

Top
 Profile  
 
 
 Post subject: Re: GT40p Heads for my EB sXR8
Posted: Wed Jun 09, 2010 12:29 pm 
Oompa Loompa
Offline
User avatar

Age: 34

Posts: 45

Joined: 9th Nov 2004

Gallery: 3 images

Ride: 98 au1 xr8

Location: perth
WA, Australia

cheers mate

 

_________________

au1 xr8 347ci votech v2 536.5rwhp

Top
 Profile  
 
 
 Post subject: Re: GT40p Heads for my EB sXR8
Posted: Wed Jun 09, 2010 6:33 pm 
Getting Side Ways
Offline

Posts: 699

Joined: 1st Jan 2006

Ride: Lots, all Fords

Location: Hamilton
New Zealand

xr8m8 wrote:
xafalcon wrote:
xr8m8 wrote:
cool i'll disregard what i read in the gregors man so yeah gt40p heads should flow 400hp at the wheels


Nope, not 400 rwHP without some sort of forced induction or power adder. Not even 400fwHP. A FULLY OPTIMISED engine could theoretically make 397fwHP based on the intake flow of 195cfm, but in the real world this isn't practically acheivable. If you can make 350fwHP with GT40P's you're doing really well.


hey bud just go back a few comments i did explain that i had a vortech v2 on to get that power out put at the wheels :D


But you used the term "flow 400rwHP" which implies STP (standard temperature and pressure) conditions, however using a blower contradicts this as both pressure and to a lesser extent temperature are raised.

In fact you could follow the same logic and say that the crappy E6 heads should flow 400hp at the wheels, which is obviously a nonsense. But given enough boost it should be possible.

So under ideal conditions GT40P heads can actually flow 397fwHP give or take. This is approximately 335rwHP. In the real world you should hope to achieve somewhere around 350fwHP (about 300rwHP) if your parts combination is well matched to the flow characteristics of the cylinder heads. The more mis-matched the combination becomes, the further away from this figure you will get.

 

_________________

XA Faimont 351C, AU2 XR8 Manual 5.0, DA LTD 5.0, Mk1 Capri 5.0, 1995 Mustang 5.0, EF2 XR8 Manual, EF2 Fairmont Ghia 5.0, AU3 XR8 Auto, AU2 XR8 Auto, AU2 XR8 Manual Ute, TE Cortina 5.0 Manual, DU LTD 5.0 soon to be manual

Top
 Profile  
 
 
 Post subject: Re: GT40p Heads for my EB sXR8
Posted: Wed Jun 09, 2010 7:09 pm 
Oompa Loompa
Offline
User avatar

Age: 34

Posts: 45

Joined: 9th Nov 2004

Gallery: 3 images

Ride: 98 au1 xr8

Location: perth
WA, Australia

because a hole heap of yous have jumped on and dribbled so much s**t i can't tell where ya mouth is to your a** let me start again for those that have just jumped in

i had a set up in my 98 au xr8 that consisted of a VORTECH SUPERCHARGER a standard bottom end bar the cam gt40p heads i had 410-415 REAR WHEEL HORSE POWER :evil: dyno sheets that prove it was at the wheels o i get it :idea: your on about na then yes you might be right. i guess if ya add a pump you'll get more hp

 

_________________

au1 xr8 347ci votech v2 536.5rwhp

Top
 Profile  
 
 
 Post subject: Re: GT40p Heads for my EB sXR8
Posted: Wed Jun 09, 2010 11:32 pm 
Getting Side Ways
Offline
User avatar

Age: 39

Posts: 1886

Joined: 26th Nov 2006

Gallery: 7 images

Ride: EL XR8, '08 Mondeo XR5t

Power: 205 rwkw

Location: Perth
WA, Australia

Chill bro. I think everyone got that - with the blower you were making 400+rwhp. It's just that in your post at the top of this page, it looks like you're saying you'll disregard what you read in the Gregors manual and GT40Ps should flow 400hp at the wheels. In reading that post, I was under the impression (as I'm sure xafalcon was) that you believed the heads are capable of flowing 400rwhp. Generally, when people speak in terms of what a head can flow, it is always in NA form. Obviously, if something is boosted, then those figures can sky-rocket.

Not trying to have a go or anything like that, just trying to avert another thread turning to s**t like I've seen way too many times on this forum.

 

_________________

Trickflow Street Heat top end kit, 70mm BBK TB & EGR, 24lb injectors, Underdrives & 3.73s: 275rwhp - 13.15@105mph NA / 12.37@116mph N20

When injustice becomes law, resistance becomes duty

Top
 Profile  
 
 
 Post subject: Re: GT40p Heads for my EB sXR8
Posted: Thu Jun 24, 2010 5:40 pm 
Getting Side Ways
Offline

Age: 32

Posts: 942

Joined: 23rd Dec 2007

Ride: AU1 XR8

Tends to happen when most people talk in hypotheticals, this man has the sheets to prove it that they can flow 400rwhp wether or not it has a pump.

So id say if your not running boost then no it wont flow that BUT the max flow is still 400rwhp.
xr8m8 wrote:
because a hole heap of yous have jumped on and dribbled so much s**t i can't tell where ya mouth is to your a** let me start again for those that have just jumped in

i had a set up in my 98 au xr8 that consisted of a VORTECH SUPERCHARGER a standard bottom end bar the cam gt40p heads i had 410-415 REAR WHEEL HORSE POWER :evil: dyno sheets that prove it was at the wheels o i get it :idea: your on about na then yes you might be right. i guess if ya add a pump you'll get more hp


I understand you mate, i understood even reading your other post tho most people think they know all.. ah well.
Top
 Profile  
 
Display posts from previous:
Sort by  
 Page 4 of 4  [ 53 posts ]  Go to page Previous  1, 2, 3, 4

Who is online

Users browsing this forum: No registered users and 17 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

 

 

It is currently Thu Dec 14, 2017 12:27 pm All times are UTC + 11 hours

 

 

(c)2014 Total Web Solutions Australia - Australian Web Hosting and Domain Names