| xlr8tr |
11-21-2014 09:13 AM |
I just love the sound of this GT40
[ame=http://www.youtube.com/watch?v=M0WNa-K6-QI]GT40 spin - YouTube[/ame]
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| fordracing65 |
11-21-2014 09:38 AM |
Quote:
Originally Posted by rodneym
(Post 1326971)
Call me crazy but the good 'ol cross plane sounds much, much better to me. :cool:
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especially when the supergchargers get spooled up... |
| RedEye |
11-21-2014 01:07 PM |
Quote:
Originally Posted by xlr8tr
(Post 1327020)
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I like that too, snap-crackle-pop of the engine. I don't know how much of that is on account of short and small dia. exhaust, but probably some. |
| blykins |
11-21-2014 01:23 PM |
The popcorn popper sound is from a big cam and a high compression ratio.
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| Gary(SF) |
11-21-2014 01:58 PM |
Great story! Sounds like a blast to drive. 1.5 hrs for rod bearings, wow. Thanks for the awesome post.
Gary
Quote:
Originally Posted by Richard Hudgins
(Post 1326985)
I had a Traco 5 liter 90 degree sbc in a Lola T330 (A long time ago) and I bought a HRE flat crank motor as a replacement as the Traco was getting long in the tooth and the HRE motor was cheaper.
The car was 100-150 rpm down on the back straight at Road Atlanta with all settings the same (Wing and gears) but I was 1.5 seconds a lap quicker.
Much faster turn one through seven. Accelerated like a banshee.
I did notice that the rivets on the engine pontoons were getting a bit loose after the first two practices and qualifying. But this was a Lola after all and they were flexible flyers anyway.
The engine also went through rod bearings rapidly. We replaced them after every 1.5 hours running. (This was from oil analysis results. Never showed copper but real close.)
I liked the motor....
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| RedEye |
11-21-2014 07:21 PM |
Quote:
Originally Posted by blykins
(Post 1327035)
The popcorn popper sound is from a big cam and a high compression ratio.
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I've been thinking of a bigger cam, might do that for next summer. I really like the sound, will probably cut unto my drivability and performance though, |
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