WIcked 205 Head under construction !

J

James

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Images courtesy of Peter T:

<img src="http://www.aussiefrogs.com/Jpegs/205_Head_2.jpg" alt=" - " />



Edit: Fixed link - gibgib

[This message has been edited by James (edited 24 February 2001).]

<small>[ 19 November 2002, 10:11 PM: Message edited by: gibgib ]</small>
 
Thanks James. This is a project I'm working on with Owen Wuillemin. The aim is to produce an exchange head/cam package that will work with the std. engine management on a 205, be emmission legal and produce 100-110 hp at the wheels. The head in the picture has had metal added in the chambers. After machining, it should flow and burn more efficiently via improved chamber shape and increased C.R. At this stage I'm having trouble with the tool path, but once resolved, we'll cut a wax model on Owen's CNC mill. I'll keep the forum posted.
 
<font face="Verdana, Arial" size="2">Originally posted by PeterT:
Thanks James. This is a project I'm working on with Owen Wuillemin. The aim is to produce an exchange head/cam package that will work with the std. engine management on a 205, be emmission legal and produce 100-110 hp at the wheels. The head in the picture has had metal added in the chambers. After machining, it should flow and burn more efficiently via improved chamber shape and increased C.R. At this stage I'm having trouble with the tool path, but once resolved, we'll cut a wax model on Owen's CNC mill. I'll keep the forum posted.
Click to expand...
hi peter. u said this head and cam package should produce 100-110 hp at the wheels. i have a 205 gti 1.9 and understood they had 130 horse standard. is this a flywheel figure or is your head/cam set up on a 1.6 gti.
 
Fly wheel figure dude

shame 130 at the wheels would be sweet

(i got 8 valve 1.9 in mine, for a couple of months anyway)
 
HP@wheels = kW@flywheel (approx.)
A std. 205 1.9 has approx 75hp at the wheels.
 
A couple of known benchmarks. A 2L Mi16 has 116kW flywheel and 116hp at the wheels. A 200kW Holden has 200hp at the wheels.

Sorry, haven't been near the mill.
 
I can see you're point, is this coincidence for these particular cars or is there something karmic in this.

What is the actual hp/kW conversion ?
 
the conversion for kw/hp etc is 1hp=0.7457kw or an easier way i remember is 100hp =75kw

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OK, i'm back on it. I've ordered some new software which should speed up creating the chamber surface. The idea is to create one 3D surface of the completed chamber, which the milling tool will follow.

Cost? I've got no idea yet. Depends on milling time, guides, hand finishing etc. Guaranteed to be awesome though! It definitely won't need 44mm valves though!
 
Posted on behalf of James/ Peter T.

>PORT PROFILES FOR PETERS XU9J2 HEAD,

FOR SALE SOON
205a.jpg


205b.jpg


wink.gif


[This message has been edited by James (edited 20 June 2001).]
 
After reading <a href="http://www.pumaracing.co.uk/pug2058v.htm" target="_blank">http://www.pumaracing.co.uk/pug2058v.htm</a>
I'd start with stock valves if they're in good condition. 43mm if new ones are needed.
 
Peter,

i am interested in your proposed head. let me know if you are still going ahead with it. :D Email me with details when you can
will_aldous@hotmail.com
 
Pete,
Is this 100-110 bhp at the wheels based on putting the head on the catalysed 1.9 8V motor that we 'know and love'?

What is normal percentage used for drivetrain loss in a 205?

Would be interested so please keep us up to date :)

Cheers Steve
 
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