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2UR-GSE Engine

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Old Aug 10, 2017 | 12:41 PM
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Default 2UR-GSE Engine

Thought some of you would enjoy this 2UR-GSE engine build:

Stock block and head casting
5.0 Liter
600+ HP
500+ ft./lb.
381 lb. dressed weight
Designed, built and tuned in 100 days

Enjoy
Attached Thumbnails 2UR-GSE Engine-img_1821.jpg   2UR-GSE Engine-img_1762.jpg   2UR-GSE Engine-img_2073.jpg   2UR-GSE Engine-img_2069.jpg   2UR-GSE Engine-img_3115.jpg  

2UR-GSE Engine-img_3116.jpg  
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Old Aug 16, 2017 | 10:21 AM
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Stunning... What's the application? Redline?

Interesting 90deg bed on the collector of that header...
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Old Aug 17, 2017 | 10:21 AM
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Subscribed...
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Old Aug 18, 2017 | 12:09 PM
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Thank you for the compliment. This was a fun project.

The application was a development project for endurance road racing.
Redline in this iteration is 7500 RPM, and is a product of its air inlet restrictors (38mm x 2).
Without air restrictors, and some modifications to the camshafts / chain guides / tensioners / DI Pumps, it will easily rev to 9200 RPM

The 90deg bend in the secondary exhaust relates to it's routing in the chassis.
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Old Aug 18, 2017 | 12:56 PM
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Originally Posted by TGV8
Thank you for the compliment. This was a fun project.

The application was a development project for endurance road racing.
Redline in this iteration is 7500 RPM, and is a product of its air inlet restrictors (38mm x 2).
Without air restrictors, and some modifications to the camshafts / chain guides / tensioners / DI Pumps, it will easily rev to 9200 RPM

The 90deg bend in the secondary exhaust relates to it's routing in the chassis.
Whoa! So you've choked flow at 600hp at around 7,500rpm? In theory that's >700hp at 9200 given similar VE and some added windage losses. What a beauty.
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Old Aug 18, 2017 | 02:00 PM
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Restrictors for this application are unfortunately defined by FIA regulation, so there is not much freedom in design. If the only constraint were 3mm of the minor diameter, the same power could be achieved with a much smaller restrictor with a proper 270 deg entry and appropriate convergent / divergent angles - such as this 29mm pictured below.
Attached Thumbnails 2UR-GSE Engine-img_3158.jpg   2UR-GSE Engine-img_3159.jpg  
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Old Aug 22, 2017 | 10:27 AM
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Originally Posted by kitabel
Are you allowed to mask the required shape?
Unfortunately not.
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Old Sep 16, 2017 | 09:17 PM
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Just found this thread. Awesome build!
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Old Oct 2, 2017 | 07:03 AM
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Old Oct 2, 2017 | 07:29 AM
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Old Oct 2, 2017 | 07:52 AM
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That's beautiful...
Given its BHP/liter/mass, how is stacking up compared to other entries in its class?
Where is it headed i.e. drivetrain and chassis wise?
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Old Oct 2, 2017 | 10:54 AM
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Originally Posted by 2013FSport
That's beautiful...
Given its BHP/liter/mass, how is stacking up compared to other entries in its class?
Where is it headed i.e. drivetrain and chassis wise?

Thank you.

Unfortunately, these engines will not be raced competitively. It was done purely as a development project. They will likely end up in road cars, special projects etc.
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Old Nov 14, 2017 | 08:04 AM
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Originally Posted by TGV8
Thank you.

Unfortunately, these engines will not be raced competitively. It was done purely as a development project. They will likely end up in road cars, special projects etc.
I have a road car (even tracked at CoTA occasionally!), if you need a test bed...
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Old Jun 2, 2018 | 01:49 AM
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crazy build!
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Old Aug 20, 2018 | 05:30 PM
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Okay, so was a build from scratch project? Just a guy in his back yard shop or what?
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