12-09-2021, 07:44 AM | #1233 |
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12-11-2021, 11:58 AM | #1234 |
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If my K24 turbo doesn’t work for me then I’ll be going back to the Harrop SC on the new GR86. It’ll be interesting to see the potential on the new motor.
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12-11-2021, 01:50 PM | #1235 |
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I wonder what they had to do to adapt the FA24F to the 86...?
Did the block bolt straight in, or were custom mounts needed? Are they running the straight direct injection setup (and ECU) from the Ascent, or are they running the 86's D4S injection? Or some kind of standalone setup? Did the supercharger manifold bolt straight up, or was some kind of adapter needed? What pulley setup were they running (I.E. how much boost to hit the numbers shown)? What was the difference between the two runs - just a pulley change, or was that gasoline vs. E85?
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12-11-2021, 03:16 PM | #1236 |
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Really interested to see if they eventually offer some kind of adapter kit for the FA24.
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12-12-2021, 10:01 AM | #1237 |
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I doubt we would see an adapter kit. Do they have any swap components? They probably wanted a head start on development, and maybe they are allowed a same-manufacturer swap for their time attack class.
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12-12-2021, 10:27 AM | #1238 | |
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Quote:
Sent from my SM-G781B using Tapatalk |
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12-12-2021, 12:00 PM | #1239 | |
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Quote:
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12-12-2021, 02:47 PM | #1240 | |||
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Quote:
Quote:
Quote:
If so, then they could very well be pre-testing fitment of the supercharger manifold for the FA24D, but then why would they need to? More likely this is just a one-off swap for the racecar, whether adapter plates to mount the supercharger manifold are needed or not. With the lower compression of the FA24F, it's not really a "proof of concept" for the kit bolting onto an FA24D in any case. If there IS a difference at the manifold gaskets and / or manifold bolts between the FA20D and FA24D, I'd be surprised if they'd go to the expense of re-casting the entire supercharger manifold for the FA24D application and throw away the molds for the FA20D. More likely they'd come up with some sort of adapter plates OR make the lower runners a separate, interchangeable part between the two platforms and keep the upper part of the manifold / supercharger housing as-is. With the extra hood clearance the Harrop kit has vs. the Edelbrock, for example, I'd guess there's room for them to use some kind of adapter plate solution, and that would be MUCH cheaper, but if the bolt holes were to just barely NOT line up, that wouldn't be possible. Likewise if the hood clearance in the 2nd gen is reduced, but I'd be surprised if that were the case just from looking at the shapes. Of course, this is all coming from someone who hasn't been hands-on with the Harrop kit like iRace86 2.0 has, so take all of the above with a grain of salt... Hopefully, no physical adaptation of any kind is needed, and the manifold just bolts right up! Then the difference between the two kits would maybe just be in the ancillary parts and tuning (which nobody has cracked the code on for the 2nd gen yet).
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12-12-2021, 03:31 PM | #1241 | |
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Also see this 11:10 to 11:40 which tells you how taller the new manifold is.. Sent from my SM-G781B using Tapatalk Last edited by Brz-123; 12-12-2021 at 03:50 PM. |
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12-12-2021, 04:55 PM | #1242 | |
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I think the car is just a test bed for their time attack car and to drum up hype for a FA24 kit that’s coming to the GR86/FA24D. I don’t foresee much profit in the R&D for spacers.
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12-12-2021, 05:56 PM | #1243 | ||
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The difference with the intake valves is within the head internals, not where they connect to the intake manifold. Likewise there was some talk about the intake ports being different - again, that's within the head internally, not at the connection between the manifold and heads. Given that the stroke of the motors is the same, the compression ratio is the same, the width of the block is apparently the same, and the general concept of the motor is the same, I think (hope!) it's likely that particular area of the architecture is the same. Quote:
Again, hopefully, the existing manifold just bolts right up. If so, Edelbrock will be happy as well. EDIT: Interesting to visually see the difference in runner dimensions between the FA20D and FA20F - look at the taper down from top to bottom on those adapters! I believe there was some mention that, being turbo, the FA20F didn't need the big runners of the FA20D for cylinder-filling. Maybe the FA24F has similar runner dimensions to the FA20D due to the greater displacement? Here's hoping!
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12-22-2021, 03:22 PM | #1244 |
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Back in stock?
Can anyone confirm if Harrop Superchargers are back in stock? Their website (Harrop-USA) is promoting the availability and stock of units. Sent an email but don't know if their staff is OOS for the holidays ( I hope they are! ), wanted to see if the hivemind knew.
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12-23-2021, 12:55 PM | #1245 |
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From Harrop: No - new website launched. Working out the kinks, stock not expected until next year. (paraphrased)
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12-23-2021, 03:04 PM | #1246 |
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damn..I'm actually thinking about swapping blocks to fa24 if the header port hasn't changed..including the mount. *crosses finger*
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