02-09-2021, 11:06 AM | #127 |
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I think the weight loss is being underplayed. If it's truly a loss of 140lbs, that's huge.
Roughly it would take my car from a P:W of 13ish(2600lbs/190~200hp) to 11ish(2450/220) Plus all that torque, the area under the curve is massive. I likely won't do it due to the cost, but I wouldn't say I'm not looking for an engine.
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02-09-2021, 01:28 PM | #128 | |
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02-09-2021, 02:17 PM | #129 | |
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I would think the Al driveshaft might save 10lbs and another 10 from the flywheel maybe? Last edited by PulsarBeeerz; 02-09-2021 at 02:54 PM. |
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02-09-2021, 03:01 PM | #130 | |
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02-09-2021, 05:21 PM | #131 |
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There is definitely plenty of incentive for anyone going from the FA20. There is more displacement and rpms and good response. The debate someone would need to have is whether to buy a gen two because the distance will close with the FA24 especially with E85 with the higher compression. I would be a driveshaft, light weight flywheel, header, e85, will be close. Sell and buy a new car or do the swap. I would dig the swap, but I’d want to the potential of the new motor.
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02-09-2021, 09:43 PM | #132 | |
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The BRZ that was swapped was using the plastic intake manifold, so if swapping a 2017+ you’ll save even more weight. Also the engine that was pulled from the car had an aftermarket header, appears to be catless as well. |
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02-10-2021, 12:22 AM | #133 | |
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They are usually CNC aluminum, so they can be fairly light compared to a steel flywheel. This one for a 2JZ to CD009 is 15lbs or half the weight of the OEM flywheel, according to them: https://www.maverick-motorsports.com...-adapter-plate I’m sure a lightweight flywheel and hydraulic TOB, which omits the clutch fork, on the stock setup would be lighter, but they probably add to the weight reduction. Again, the point is that an apples to apples comparison would be a FA20/24 with an aluminum flywheel, aluminum driveshaft, catless header, and whatever other nuances might be different other than the basic, assembled long-block. We know how light people have gotten this platform without a K24, so I guess we will have to see what the difference is with one.
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02-10-2021, 02:02 AM | #134 |
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FWIW Kpower's car weighed in at 2673lbs with the swap. When Pure Automotive did their swap they came in at 2612lbs with the S2K trans. ..So the weight isn't crazy light or unrealistic no matter how many apples one puts under the hood.lol
Best I could find on weights for both fully dressed engines is ~360lbs of apples for FA20 and ~285lbs of apples for K24A. Many apples here folks. It should be noted that KPower mentions weight savings of the swap in: intake manifold, oil pan, oil pump, exhaust header and Ill add balance shaft removable as that is done in a Type-S oil pump upgrade. These have to happen so the swap can happen btw. All saving weight vs a bone stock OEM straight out of a TSX K24A2. Now subtract the 70-75lb of difference in dressed long blocks between both OEM standard engines. Probably nearing 100lbs already, yeah? There isn't an apples to apples comparison because it became an orange in order to be installed. |
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02-11-2021, 05:51 AM | #135 |
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With regards to the weight of the adapter plate and flywheel they are not as heavy as you might think, my adapter kit from PMC Motorsport for example the flywheel is only 6.9kg, the adapter plate I did not weigh but its 20mm thick aluminium and feels like it weighs nothing when you pick it up.
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02-11-2021, 11:54 AM | #136 |
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Holy hell that is a gorgeous piece of machining.
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02-12-2021, 04:35 PM | #137 | |
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What's your "reliably" definition? To me it means track days without worrying if you're engine's gonna eat itself.
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02-14-2021, 12:14 PM | #138 |
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Yep I think that's a reasonable position. I said this elsewhere on the thread, but everyone's interest in E85 results will depend on availability where they live. I've got an E85 station 2 minutes from my house and dozens in my area, so obviously very relevant to me. I'm not a fan of catless exhausts, so catless dyno comparisons matter less to me. It's like you said, everyone's situation is different. The FA20 has many drawbacks, but one thing I like is its ability to make 200 whp on E85 without needing to touch the exhaust.
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02-14-2021, 02:52 PM | #139 |
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I guess it might just matter what part of the country you're at. Like in the midwest, you can find E85 at every other gas station. If you have flex fuel, it's literally never cost me an inconvenience or even a second of extra thought in my 2 years of running full E85. You break even when compared to 93 octane too.
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02-15-2021, 01:50 PM | #140 |
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^very true on some points. But you're also filling up your tank with a far less energy dense fuel. So you're filling up a lot more often.
And every track in the SE would require me to haul in all my own E85 to use...fun.
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