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1 Feb 2017, 22:48 (Ref:3708507) | #1926 | ||
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And complaining about the tires, aside from their effect on this race, is sort of pointless in the end, since the Continental Daytona/Superspeedway spec tires are now obsolete as of Monday morning.
The newer spec tires that Continental has been working on that should work better with the DPIs should be ready by the time of the Sebring tests. Aren't the GTD cars also supposed to have a new generation tire as well? |
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1 Feb 2017, 23:40 (Ref:3708517) | #1927 | |||
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Quote:
Some seem to have the perception that pushrod engines are old technology even though OHC predates OHV. The Gen IV and V GM small blocks have nothing in common with a Gen I or Gen II small block other than their layout. In the same way, a 2L Porsche flat-6 has nothing in common with a 3.6L, 3.8L, 4L flat-6. My point is that a pushrod V8 isn't old or outdated technology, but a different answer for how to go fast. As you mentioned, it isn't about comparing peak power numbers but the area under the torque curve. It's hard to argue against the "table top" torque curve a pushrod V8 provides, especially given the small, light, reliable, and efficient package. ...I swear I wasn't trying to get preachy, but I did anyway. Get between me and my V8 "motors" and it just spills out of me. |
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1 Feb 2017, 23:47 (Ref:3708519) | #1928 | |||
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Luckily, as you mentioned, we'll never know. Here's hoping that Hoosier... I mean Continental has "fixed the glitch". |
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2 Feb 2017, 01:07 (Ref:3708535) | #1929 | ||
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As far as I know, only the WEC/LM have the intermediate tire option. Continental won't stump for it, and IMSA haven't had the option for years overall. I'm not sure about the ELMS, but I can see them not having it due to cost cutting and/or Dunlop not wanting to do it for a regional series that races only a few times a year and is mainly a pro-am series.
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2 Feb 2017, 04:10 (Ref:3708572) | #1930 | |||
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Quote:
-mike |
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2 Feb 2017, 07:51 (Ref:3708604) | #1931 | |
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When you say inters, that's the traditional inter isn't it? With soft rubber and a tread pattern? Not the 'slickermediate' with no tread pattern? Do you know if that's available to anyone in ELMS?
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2 Feb 2017, 09:30 (Ref:3708622) | #1932 | |||
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I race with my 11 year old son 5 days of every month, in cadet karts for the past 5 years, we use a Honda GX160 8hp engine, its a push-rod engine, and I just love the simplicity of it, its the most popular form of UK karting, I build, dyno and maintain my own engines, and we are regular podium visitors. The Gibson engine is nothing special in my opinion, its just a spec race engine built to a budget......but the Mazda motor is quite special, it features a combination of both port fuel injection + side mounted homogeneous direct injection which gives it a good combination of low and high rpm performance, plus good fuel economy, but in my opinion the Mazda capacity is too small, it needs to be in the region of 2.5-3 Litres, and Mazda will hence struggle to hold a candle to Cadillacs big capacity motor due to a substantial torque deficit of 20-30%......same for Gibson, they will have a substantial torque deficit to the Cadillacs due to a lack of capacity......if IMSA they ever apply BoP, I think they will need to impose an rpm limit to the Cadillac, which will effectively reduce the air consumed by the motor to a comparable amount to the Gibson and Mazda, it would be minimal cost and quick to implement, as fuel or air restrictors cost a fortune to implement. |
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2 Feb 2017, 12:32 (Ref:3708665) | #1933 | ||
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Doesn't matter how much tech is in the Mazda engine, if it blows up spectacularly every race.
BTW, the Gibson engine sounds INCREDIBLE in person. Very loud. In the beginning of the race when the Dallaralacs were running 1-2-3, we were up in the stands near T1, you'd hear the 4th place Gibson engine over all three 6.2l V8's. |
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2 Feb 2017, 12:36 (Ref:3708667) | #1934 | ||
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Quote:
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2 Feb 2017, 13:02 (Ref:3708671) | #1935 | ||
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I was standing near the pit wall opening when it drove by alight.
That was a proper fire. |
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2 Feb 2017, 14:31 (Ref:3708698) | #1936 | |||
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But no one will ever top Dyson at one race, think it was the 12 hours one year, where the first step in multiple 16 Dyson pit stops was to put out the turbo fire before refueling. |
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"Knowing that it's in you and you never let it out Is worse than blowing any engine or any wreck you'll ever have." -Mike Cooley |
2 Feb 2017, 14:34 (Ref:3708700) | #1937 | ||
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Doesn't have Mazda a v6 to develop with the current technology used in the 4 in line ?
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2 Feb 2017, 14:36 (Ref:3708701) | #1938 | ||
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It's always at the same time in every race, just proportionate to the length of the race.
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2 Feb 2017, 14:50 (Ref:3708705) | #1939 | ||
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as you may have detected, I am also no fan of the 2.0L Mazda I4 turbo engine.....I am bemused that Mazda actually continued with it this year, they should have used the 2.4 AER V6 and evolved that into something with bigger capacity like 3 litres for more torque and lower revs for better reliability and fuel consumption.....yes the V6 also has a bad reliability record in the WEC, but it would have been a better basis that the high revving small capacity I4.......it always has the life expectancy of a mayfly.
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2 Feb 2017, 15:41 (Ref:3708726) | #1940 | ||
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data analysis http://nasportscar.com/2017-weathert...ysis-rolex-24/
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North American SportsCar |
2 Feb 2017, 15:41 (Ref:3708727) | #1941 | ||
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I'm unrealistic and think they should run a rotary, so.
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2 Feb 2017, 15:43 (Ref:3708730) | #1942 | ||
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“We’re trying to close the doors without embarrassing ourselves, the France family and embarrassing (the) Grand American Series,” he said in the deposition. “There is no money. There is no purse. There’s nothing.” |
2 Feb 2017, 15:46 (Ref:3708732) | #1943 | ||
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"Knowing that it's in you and you never let it out Is worse than blowing any engine or any wreck you'll ever have." -Mike Cooley |
2 Feb 2017, 16:43 (Ref:3708757) | #1944 | |||
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https://i0.wp.com/nasportscar.com/wp-content/uploads/2017/02/P.jpg In all the deceleration zones, which is about 8 or 9 of the total 12 sectors, the Cadillac had anywhere from 0.1 to 0.3 secs advantage over the fastest gibson engine......I'm sticking to my guns, the Cadillac has a torque advantage......will be interesting to see if or how they apply BOP......but I still think its early days and everyone needs to catch up a bit first to level the playing field. |
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2 Feb 2017, 16:50 (Ref:3708760) | #1945 | |||
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Quote:
-mike |
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2 Feb 2017, 18:17 (Ref:3708784) | #1946 | ||
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Well, it does seem that all the GTLM teams opted for the Michelin customer spec rain tires while running confidential/individual team spec slicks. Though I do think that this was a decision made by Michelin as it seems that the felt that the customer rain tires may've been a bit more durable for Daytona.
I also didn't know that Michelin made the slick intermediates for GT cars, I thought that only LMP1 and LMP2 teams had them available |
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2 Feb 2017, 18:48 (Ref:3708792) | #1947 | ||
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2 Feb 2017, 19:09 (Ref:3708800) | #1948 | |
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LOL, Michelin has a slick tire that works in the rain, and Conti doesn't have a rain tire which works in the rain.
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2 Feb 2017, 19:31 (Ref:3708814) | #1949 | |
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The diesel skyactiv was (in racing), but I don't think the 'new' engine has much to do with Mazda anyway. I don't know what is going on with AER, but Kolles was quick to get out and picked up the Nismo V6. I think that says something.
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2 Feb 2017, 19:38 (Ref:3708816) | #1950 | |||
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