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2UR-GSE Engine

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Old 08-10-17, 01:41 PM   #1
TGV8
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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
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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 08-16-17, 11:21 AM   #2
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Stunning... What's the application? Redline?

Interesting 90deg bed on the collector of that header...
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Old 08-17-17, 11:21 AM   #3
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Subscribed...
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Old 08-18-17, 01:09 PM   #4
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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 08-18-17, 01:56 PM   #5
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Quote:
Originally Posted by TGV8 View Post
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 08-18-17, 02:05 PM   #6
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From the picture of the air box with the snout entries: is that end piece a required and furnished restrictor (your entry must include the supplied part), or shop made?
The box design looks excellent but if those were fabricated with only the 38mm maximum ID rule, the snout entry should have a full 270 degree rollover radius, just like on the IR stacks. May be worth as much as 3%.
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Old 08-18-17, 03:00 PM   #7
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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.
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Old 08-19-17, 08:20 AM   #8
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Are you allowed to mask the required shape?
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Old 08-22-17, 11:27 AM   #9
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Quote:
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Are you allowed to mask the required shape?
Unfortunately not.
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Old 09-16-17, 10:17 PM   #10
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Just found this thread. Awesome build!
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Old 10-02-17, 08:03 AM   #11
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Old 10-02-17, 08:29 AM   #12
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Old 10-02-17, 08:52 AM   #13
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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 10-02-17, 11:54 AM   #14
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Quote:
Originally Posted by 2013FSport View Post
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 11-14-17, 09:04 AM   #15
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Quote:
Originally Posted by TGV8 View Post
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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