Aftermarket presence & support for the series 1,2 & 3 XJ chassis
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Joined: Jul 2010
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From: Austin tx and Daytona FL.
pic of 12 ITBs on a jag V12, rare,to say the least!
never came on a factory V12 car!
these were cast from magnisium,not aluminum,(lighter weight), and tapered trumpets. they have a slide throttle plate, not rotate butterfly type!
grp 44 racing mid 1980s, sometimes show up on Ebay.
never came on a factory V12 car!
these were cast from magnisium,not aluminum,(lighter weight), and tapered trumpets. they have a slide throttle plate, not rotate butterfly type!
grp 44 racing mid 1980s, sometimes show up on Ebay.
Last edited by ronbros; Jul 12, 2014 at 06:35 PM.
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Senior Member
Joined: Sep 2010
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From: Seattle, Washington
That's awesome.
I've actually made a slide type throttle body for a 13B from machined aluminum from the housing & a machined PTFE plate for the slide.
It worked pretty well, until boost hit above 5psi, then it would stick due to thrust loading.
So I went back to the OEM throttle body design.
I've actually made a slide type throttle body for a 13B from machined aluminum from the housing & a machined PTFE plate for the slide.
It worked pretty well, until boost hit above 5psi, then it would stick due to thrust loading.
So I went back to the OEM throttle body design.
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Joined: Jul 2010
Posts: 7,362
Likes: 1,241
From: Austin tx and Daytona FL.
true about slide throttles and boost pressure,
seems lately that barrel valve type throttles are in favor, on hi-tech turbo engines.
of course DI(direct injection) is the ultimate method at getting fuel into the chamber!
seems lately that barrel valve type throttles are in favor, on hi-tech turbo engines.
of course DI(direct injection) is the ultimate method at getting fuel into the chamber!
September is shaping up to be an exciting time in auto circles: Jaguar XE, new Miata, and the big reveal from THIS THREAD!!!
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From: Seattle, Washington
The Cat Is Out Of The Bag
This is the first leaked photo of the cat coming out swinging.
More info & media to be released soon.
Car was built by Xcessive Manufacturing in Portland, Oregon.
#XMDrift
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Joined: Sep 2010
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From: Seattle, Washington
No it's not my car, it belongs to my boss.
We built this car durring the Spring months & have been testing/ tuning it throughout the Summer months.
I work @ Xcessive Manufacturing, where we design & build race application components for cars (we do other stuff as well)
I'll keep posting stuff as it pops up on my social media feed (this pucture was from the Sunday/ Monday PARCFEST event in Canby Oregon @ Pat's Acres Race Complex.
Car is being piloted in this picture by driver Justin Lucas
Everything on this car was built/ modified in house @ Xcessive Manufacturing.
We built this car durring the Spring months & have been testing/ tuning it throughout the Summer months.
I work @ Xcessive Manufacturing, where we design & build race application components for cars (we do other stuff as well)
I'll keep posting stuff as it pops up on my social media feed (this pucture was from the Sunday/ Monday PARCFEST event in Canby Oregon @ Pat's Acres Race Complex.
Car is being piloted in this picture by driver Justin Lucas
Everything on this car was built/ modified in house @ Xcessive Manufacturing.
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Senior Member
Joined: Sep 2010
Posts: 221
Likes: 27
From: Seattle, Washington
You're local to Portland, Oregon & so are we.