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EA head design 

 

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 Post subject: EA head design
Posted: Mon Jan 08, 2007 9:32 pm 
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I know Volvo were in on the XR6T turbo. Mazda and Volvo are involved with the FOcus design. And Mazda also with the COurier and that van, Econovan or whatever.
But I was told the other day that Honda were in on the design of the original SOHC 3.9/3.2L I6 on the EA Falcoonas, anyone heard anything like this before? Sounds qqueer as Honda are in no way related to Ford as far as I knew, were those other companies are part owned and that...

 

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Posted: Mon Jan 08, 2007 10:01 pm 
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Its possible, Honda worked on the XF alloy heads iirc.

 

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Posted: Mon Jan 08, 2007 10:21 pm 
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if thats true then im surpised we didnt have DOHC ealier :(

 

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Posted: Mon Jan 08, 2007 10:24 pm 
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Gaz wrote:
if thats true then im surpised we didnt have DOHC ealier :(


the asians were tight asses on passing the info over I am guessing...so they just gave them the SOHC.

phong =P~

 

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Posted: Mon Jan 08, 2007 10:48 pm 
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stockstandard wrote:
Its possible, Honda worked on the XF alloy heads iirc.


Well if that is so, then it's very possible.

Anyone know why? Any more details? I would of thought there would of been enough knowlkedge in the Ford group (Ford US, AUS, Mazda, Volvo, Astin Martin, Land Rover, Lincon, etc.) to have done it themselves...

 

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Posted: Tue Jan 09, 2007 2:32 am 
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Like stockstandard said, Honda were in on the original alloy heads... I have the write up in an old magazine somewhere.

Back then Honda were experts in alloy head design and working with alloy. It was kind of a new thing for Ford, so they got the experience from elsewhere.

They actually cast the heads for a while and shipped them over here until Ford started doing their own casting.

Ford/Tickford also didn't do the work on the XR heads. Complete cars and engines were sent to Tickford in the UK to get the work done. Obviously Ford realised they didn't have the experience or facilities at the time to make the work happen.
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Posted: Tue Jan 09, 2007 2:36 am 
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well if honda was in on the design, how come the 6's dont have VTEC and can rev to 9500rpm :P

 

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Posted: Tue Jan 09, 2007 2:59 am 
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The same reason the engines that can go to 9,500 rpm won't make anywhere near as much torque, especially down low where you want it in a big heavy car.

 

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Posted: Tue Jan 09, 2007 8:52 am 
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So we blame Honda then for the headgasket blowing issue? ;-)

 

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Posted: Tue Jan 09, 2007 5:39 pm 
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alfy wrote:
well if honda was in on the design, how come the 6's dont have VTEC and can rev to 9500rpm :P

i've got a vtec conversion on my car, slowly working out how to rev it to 9500rpm without blowing it!

 

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Posted: Tue Jan 09, 2007 6:55 pm 
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Getting those really high revollies isn't easy. You need the right conrod length to stroke length ratio, and among other things, how light the valve train is, ie; titanium components, hollow camshafts, etc....
Look at m/cycle stuff, ie; Kwaka ZX250, redline of 19,500rpm, doesn't pull till 10,000rpm. One with racing stuff in it starts pulling at 14,000 rpm, ( I know this cause a mate had one.).
Anyway, light weight components and correct configuration of revolving components ( design ) all helps.

 

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Posted: Tue Jan 09, 2007 8:08 pm 
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thats some new info! it would have been great 2 dohc's in ea's id b cheerin lol

 

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Posted: Thu Jan 11, 2007 2:09 am 
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Ford looked at and even built twin cam EAs, they were 3.5litre from memory. But decided they were too expensive to produce to be worthwhile... Like a lot of stuff you don't think they've thought of, they looked and decided against it. After all, If you think they're out to make cars, you're kidding yourself.. Like everyone, they gotta make money first.. If it won't pay they won't build it.
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