03-08-2024, 03:35 PM | #23 |
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Stock trans is really what’s going to limit you in your build, keeping the torque under 750 will keep it safe but you won’t be maximizing the turbo/other parts yet. Might be worth getting a pure trans before the 3.5L motor
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03-08-2024, 03:52 PM | #25 |
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03-08-2024, 03:57 PM | #26 |
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Nope... ZF 8 speed... same/similar trans as the M5 I believe.
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03-08-2024, 05:41 PM | #28 |
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For someone we to the scene, please explain the benefits/downsides of single turbo vs 2 turbos? Also why not 2 big turbos, or 3cyl would not spoil it enough in 1/4 mile?
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03-08-2024, 06:14 PM | #29 |
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I definitely think the 6870 is the sweet spot with the bigger hot side on the 3.0 L, but, talk to me about the 3.5 L? If I were gaining that replacement, then I would go 7275 as well.
What the available options to stroke/bore the s58?
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03-08-2024, 06:18 PM | #30 | |
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There will be a few options in the near future… I’m sure some of these will be setting records very soon. I’m not familiar with all of the options just yet
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03-08-2024, 07:26 PM | #31 |
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03-08-2024, 07:44 PM | #32 |
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Wrapping it up… it’s a piece of art.
It will be on the dyno Sunday
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03-08-2024, 09:22 PM | #34 |
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03-08-2024, 09:23 PM | #35 | |
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i don't know if you can put 2 big turbos (that means you need 3 cylinders to drive each turbo, not enough), not to mention no space to fit all the other bits like intercooler etc |
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03-09-2024, 05:17 AM | #37 |
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Legitimate question!!! I’ve heard several M3s in person with exhaust that sound like crap. Loud AF, but still crap.
I’m no Supra expert, but generally speaking the single turbo Supras (real 90’s Supras) I’ve heard in videos sound great! Is there a firing order difference or something, or does the single turbo conversion smooth it out? If a modern M3 could sound like an old school single turbo Supra, the sound alone would be worth the conversion. |
03-09-2024, 05:46 AM | #38 | |
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03-09-2024, 06:07 AM | #39 |
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03-09-2024, 08:30 AM | #40 |
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I will make video clips and use my dedicated microphone to capture the sounds.
I did that when I got the BoostLogic exhaust and will try to do something similar
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03-09-2024, 10:22 AM | #41 |
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I know it’s not the “cool” thing to do, but you really need a filter on that thing. You’d be surprised how much shit will get in and contaminate your engine without one. Expect silicon to go up substantially in oil analysis content and to also develop issues with that turbo if you drive it hard and a lot of miles. It’s just not worth it in my opinion. Find a way to make something work.
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03-09-2024, 10:28 AM | #42 | |
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03-09-2024, 10:40 AM | #43 | |
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Now, the OP will in the future do a 3.5 stroker kit, which will add more exhaust volume and technically with the same configuration he has now, will see faster spool. If he’s prepared the existing turbo sizing for that now, because he doesn’t want to change any wheels or housings out when that happens, then technically the current setup will be slower spool, a narrower powerband and the turbo would look like it’s still got room up top to keep climbing power. When the new engine goes in, his existing powerband should broaden and if sized right, should fall inline with what I said earlier… ie lower power kickin with slightly plateaued HP output at the very top. But all they can be tailored again with inexpensive exhaust housing changes if the turbo manufacturer has allowed for it. Hope that helps. |
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03-09-2024, 10:46 AM | #44 | |
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