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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain.


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Old 04-27-2017, 03:40 PM   #1
Nigelr32
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FA 20 block power limit

Hi everyone, Nige here from the UK..

I have been looking around on the net for an answer to my query, but haven't got a definitive answer yet.. thought maybe someone here could help??

As some of you will know I'm building a track car and am going to turbocharge it. I have a GTX3071R but am being led down the path of getting something bigger, like a 3576 or 3582.

So, my question is this.. what is the highest power levels tested on a stock Block. Not Pistons rods or crank, but the block. I believe the weak point is the open deck design, am I right.. is this where they fail?

I reckon a 3576 will give 600hp.
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Old 04-27-2017, 03:42 PM   #2
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Originally Posted by Nigelr32 View Post
Hi everyone, Nige here from the UK..

I have been looking around on the net for an answer to my query, but haven't got a definitive answer yet.. thought maybe someone here could help??

As some of you will know I'm building a track car and am going to turbocharge it. I have a GTX3071R but am being led down the path of getting something bigger, like a 3576 or 3582.

So, my question is this.. what is the highest power levels tested on a stock Block. Not Pistons rods or crank, but the block. I believe the weak point is the open deck design, am I right.. is this where they fail?

I reckon a 3576 will give 600hp.
I think Gushi from FD still uses the stock block and has like 650hp or so. Upgraded internals of course.

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Old 04-27-2017, 03:43 PM   #3
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While I have no first hand experience with this I know that typically on EJ motors when going for very high power they would go to a closed deck and sleeved setup. Not sure if this applys to the FA20 as much or at what point it would be needed.
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Old 04-27-2017, 03:56 PM   #4
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I think Gushi from FD still uses the stock block and has like 650hp or so. Upgraded internals of course.

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Gushi's car has a 2JZ
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Old 04-27-2017, 04:11 PM   #5
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I think Gushi from FD still uses the stock block and has like 650hp or so. Upgraded internals of course.

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Gush uses a 2J

They tried to built the FA20 but had trouble keeping it reliable and scrapped it after the first year IIRC.

As far as your question goes. I think theres a few guys pushing 600+ on the stock block reliably.
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Old 04-27-2017, 04:26 PM   #6
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Gushi's car has a 2JZ
I though he uses the FA20... or did for a year...

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Old 04-27-2017, 05:23 PM   #7
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Thanks for the replies guys. Didn't Gushi run an EJ initially?
Beau Yates in Aus used the FA20 for a year then changed to 2J.

The Vsport Aus car runs a built FA, but is nowhere near 500hp.

So, do we think 600hp is safe on the stock open deck? I have read that the EJ is made of monkey metal, whereas the FA is better quality?
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Old 04-27-2017, 05:28 PM   #8
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Local guy here has 500HP reliably on completely stock block
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Old 04-27-2017, 05:36 PM   #9
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I though he uses the FA20... or did for a year...

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At first yea he used a flat 4. I don't remember if it was a fa20 or not. I thought it was an EJ they dropped in.
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Old 04-28-2017, 12:50 AM   #10
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Paging @Knshro13

Probably too busy with FD Orlando.
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Old 04-28-2017, 08:42 AM   #11
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The '17 manual only blocks have been strengthened compared to previous years.
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Old 04-28-2017, 11:55 AM   #12
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I have read and seen guys on stock internals supercharged e85 running around 380hp to wheel. So 450 ish to the crank. Can our driveshafts handle 600+? I thought they would blow from the force.
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Old 04-28-2017, 12:18 PM   #13
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I have read and seen guys on stock internals supercharged e85 running around 380hp to wheel. So 450 ish to the crank. Can our driveshafts handle 600+? I thought they would blow from the force.
I have uprated shafts, hubs and a Samsonas Sequential 'box, so drivetrain strength isn't an issue.

I'm not talking stock internals here, I am asking about the strength of the block. TBH I wouldn't put any more power through the stock internals, but then, I build my own engines.
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Old 04-28-2017, 12:18 PM   #14
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The '17 manual only blocks have been strengthened compared to previous years.
Strengthened in what area and how?
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