Difference between revisions of "GM Ultra Engine"

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{{Wikify|date=June 2008}}
'''Ultra''' was the codename for [[General Motors]]' next-generation family of [[DOHC]] [[V8]] engines that was being developed to replace the aging [[Cadillac Northstar engine|Northstar]] as the V8 engine of choice for GM's premium vehicles. There is very little information on the engine's  specifications currently available, however its lowest [[Engine displacement|displacement]] would presumably have been similar to the Northstar's, (with higher-displacement versions probable as well), and it would very likely have incorporated technologies from the [[GM High Feature engine|High Feature]] [[V6]] family, including continuously [[variable valve timing]] on both intake and exhaust ports, as well as provision for [[gasoline direct injection]]. These engines would probably have been adaptable for both [[Longitudinal engine|longitudinal]] and [[Transverse engine|transverse]] applications (the latter would have been used by the rumored V8-powered versions of the [[GM Lambda platform|Lambda]] [[crossover SUV]]s).  
<!-- Image with unknown copyright status removed: [[Image:ShaunVectra004.jpg|thumb|right|A V6 in-situ|{{deletable image-caption|1=Sunday, 20 April 2008}}]] -->
The '''C25XE''' is a [[Family II]], [[General Motors]] engine. It is a 2498 cc (2.5L), [[DOHC]] 24 valve, 'V' configuration, 6 cylinder engine producing 170bhp. It is commonly found in the larger of the GM range of cars - including the [[Opel]]/[[Vauxhall Motors|Vauxhall]] [[Opel Vectra|Vectra]], [[Opel Calibra|Calibra]], [[Vauxhall Cavalier|Cavalier]] and [[Opel Omega|Omega]]. <ref>{{cite web | url = http://www.calibrawiki.com/index.php?title=C25XE | title = Calibra Wiki V6 information | work = Calibra Wiki | accessdate = 2008-04-13}}</ref>


==MSD version==
Despite previously revealing plans to allocate production to the [[Tonawanda]] Engine plant, as of January 2008 GM has cancelled development of this engine. <ref>[http://www.edmunds.com/insideline/do/News/articleId=124170 GM Drops Plans for New DOHC V8 Engine in 2009<!-- Bot generated title -->]</ref>
{{Disputed-section|date=June 2008}} <!-- this was the X25XE -->
A special edition of the engine was worked by [[MSD]] ([[Motor Sports Developments]] based in [[Milton Keynes]] in [[England]], [[UK]]), which includes reprofiled camshafts, giving the engine a boost of 24bhp.{{Fact|date=April 2008}} This engine appeared in the special edition MSD [[Opel Vectra|Vectra]] [[GSi]]'s. <ref>{{cite web | url = http://www.evo.co.uk/carreviews/evolongtermtests/19911/vauxhall_vectra_gsi_v6.html | title = EVO Magazine Vectra GSi review | work = EVO Magazine | accessdate = 2008-04-13}}</ref>


==References==
==References==
{{reflist}}
<references/>


[[Category:GM engines|2.5L]]
==See also==
*[[List of GM engines]]
*[[Cadillac Northstar engine]]
*[[GM High Feature engine]]
 
==External links==
*[http://www.motortrend.com/features/auto_news/2007/112_0702_gm_ultra_v8_engine Motor Trend article]
 
[[Category:GM engines|Ultra]]
 
 
{{automotive-part-stub}}

Revision as of 15:27, 3 February 2009

Ultra was the codename for General Motors' next-generation family of DOHC V8 engines that was being developed to replace the aging Northstar as the V8 engine of choice for GM's premium vehicles. There is very little information on the engine's specifications currently available, however its lowest displacement would presumably have been similar to the Northstar's, (with higher-displacement versions probable as well), and it would very likely have incorporated technologies from the High Feature V6 family, including continuously variable valve timing on both intake and exhaust ports, as well as provision for gasoline direct injection. These engines would probably have been adaptable for both longitudinal and transverse applications (the latter would have been used by the rumored V8-powered versions of the Lambda crossover SUVs).

Despite previously revealing plans to allocate production to the Tonawanda Engine plant, as of January 2008 GM has cancelled development of this engine. [1]

References

  1. ↑ GM Drops Plans for New DOHC V8 Engine in 2009

See also

External links


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