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GRA throttle body with IMPCO converter 

 

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 Post subject: Re: GRA throttle body with IMPCO converter
Posted: Tue May 26, 2009 10:30 am 
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twason wrote:
I recently tried to get one from GRA and they say no longer sell them, I was forced to buy the whole B2 from them.


Swift Automotive in melb still sell them as far as i'm aware.
Most ppl i know have gotten them from there.

 

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 Post subject: Re: GRA throttle body with IMPCO converter
Posted: Tue May 26, 2009 11:01 am 
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Which piston you talking about???

http://www.aclperformance.com.au/Ford4. ... istons.htm

What would be the highest comp with this piston before you start getting into problems with timing chain and so on???

Also i think hypatec also do a piston for 4.0L engines as well but carnt trace down a catalogue???

 

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 Post subject: Re: GRA throttle body with IMPCO converter
Posted: Tue May 26, 2009 2:52 pm 
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EFFalcon wrote:
twason wrote:
I recently tried to get one from GRA and they say no longer sell them, I was forced to buy the whole B2 from them.


Swift Automotive in melb still sell them as far as i'm aware.
Most ppl i know have gotten them from there.

do you have details on swift automotive-----need some springs,thanks

 

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 Post subject: Re: GRA throttle body with IMPCO converter
Posted: Tue May 26, 2009 3:49 pm 
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19-21 Swift Way, Dandenong South, VIC

p: (03) 97683284

 

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DTHWGN - EA GL Wagon, LTD Interior, Satin Black, 5.0, Turbo
RACER - EF Futura , 5.0, 5 Speed
PROJECT - 83 Thunderbird, Lowered, 18" Billet Wheels
DAILY - BA Fairmont Ghia 5.4 3V

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 Post subject: Re: GRA throttle body with IMPCO converter
Posted: Tue May 26, 2009 8:07 pm 
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EFFalcon wrote:
19-21 Swift Way, Dandenong South, VIC

p: (03) 97683284

thanks

 

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 Post subject: Re: GRA throttle body with IMPCO converter
Posted: Tue May 26, 2009 10:37 pm 
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MICKYYYY wrote:
Which piston you talking about???

http://www.aclperformance.com.au/Ford4. ... istons.htm

What would be the highest comp with this piston before you start getting into problems with timing chain and so on???

Also i think hypatec also do a piston for 4.0L engines as well but carnt trace down a catalogue???

thats the pistons I was running. I am going to be using the hypatecs, but they have a 6cc dish in them dropping the comp.

I took 0.013" from the block and I think 0.050" from the head to get the 11.3 I had with the AU mls head gasket, but in saying that, when the motor blew up, there were indentations on the tops of the pistons from the valves hitting on 4 of the pistons. Piston to valve clearance was checked when i built the motor, but only on #1 cylinder and funnily enough #1 didnt have any marks. The new pistons will have bigger fly cuts put into them to help prevent this again

 

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 Post subject: Re: GRA throttle body with IMPCO converter
Posted: Tue May 26, 2009 11:13 pm 
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What comp do the hypatecs have with standard chamber??? hopefully more than ACL do???

 

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 Post subject: Re: GRA throttle body with IMPCO converter
Posted: Tue May 26, 2009 11:20 pm 
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macxr8 ... are u using winsor valves in your new head....

it seems that the only valves available are std material valves....would like some stainless ones on the exhaust at least seeing as it runs lpg....

seems quite a bit of mixing and matching to get things done...may get a bit expensive for my budget build......would rather put the money toward a windsor build

 

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 Post subject: Re: GRA throttle body with IMPCO converter
Posted: Wed May 27, 2009 9:26 am 
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standard valves seem to hold up to LPG perfectly fine.

 

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FALCN6 - EF GLi Turbo, 20" Rims, Air Bag Suspension, Straight LPG, 225rwkw
DTHWGN - EA GL Wagon, LTD Interior, Satin Black, 5.0, Turbo
RACER - EF Futura , 5.0, 5 Speed
PROJECT - 83 Thunderbird, Lowered, 18" Billet Wheels
DAILY - BA Fairmont Ghia 5.4 3V

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 Post subject: Re: GRA throttle body with IMPCO converter
Posted: Wed May 27, 2009 2:35 pm 
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gogetta wrote:
macxr8 ... are u using winsor valves in your new head....

it seems that the only valves available are std material valves....would like some stainless ones on the exhaust at least seeing as it runs lpg....

seems quite a bit of mixing and matching to get things done...may get a bit expensive for my budget build......would rather put the money toward a windsor build

am putting in 4v Clevo valves, machined down on the head to suit the AU head

MICKYYYY wrote:
What comp do the hypatecs have with standard chamber??? hopefully more than ACL do???

Not 100% sure but yes I think it is more

 

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 Post subject: Re: GRA throttle body with IMPCO converter
Posted: Wed May 27, 2009 4:22 pm 
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the more comp on standard camber the better :D

 

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 Post subject: Re: GRA throttle body with IMPCO converter
Posted: Wed May 27, 2009 7:10 pm 
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macxr8 wrote:
gogetta wrote:
macxr8 ... are u using winsor valves in your new head....

am putting in 4v Clevo valves, machined down on the head to suit the AU head

one both inlet and exhaust what are u doing about the guides....the AU has 7mm stems but arnt clevo ones .344"(8.7mm)?

 

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 Post subject: Re: GRA throttle body with IMPCO converter
Posted: Wed May 27, 2009 7:41 pm 
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yup, AU has 7mm guides and clevo 11/32", guides have been replaced with earlier eseries ones that are 11/32's

 

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 Post subject: Re: GRA throttle body with IMPCO converter
Posted: Thu May 28, 2009 2:07 am 
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maxxr8, id love to hear how that 510 goes when you get around to putting it in and finishing your build. The system you are running is similar to what I'm aiming for. I'm after the 9.6:1 ratio ACL rebuild kit, but with an AU head gasket and XR6 head, which has been machined at least once, it will probably be heading towards 10:1 maybe? Nowhere near your old setup though!! I'm assuming that was straight gas though?

Does anyone else have experience with the S510 on a NA I6 falcon? or some real world figures on flow restriction and/or pressure drop across the throttle body?

BTW EFFalcon, thanks for the heads up on Swift Automotive, especially since I'm in Vic.
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