The Ultimate FA20 ITB thread. - Page 12 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Hawk77FT · 02-12-2019, 05:58 PM

Quote:

Originally Posted by Tokay444

Less restriction? What are the flowbench numbers of the stock manifold?
Keep in mind now, the engine will be ingesting measurably warmer air.

CFm - after my intake manifold extrude honing.
Runner before after
1. 431 472
2. 433 474
3. 430 471
4. 427 468

Hope this helps

Tokay444 · 02-12-2019, 06:44 PM

Quote:

Originally Posted by Hawk77FT

CFm - after my intake manifold extrude honing.
Runner before after
1. 431 472
2. 433 474
3. 430 471
4. 427 468

Hope this helps

It does when we have flow numbers for these ITBs, and the heads.

CSG Mike · 02-12-2019, 08:50 PM

The (aged) NA motor being used for testing failed while exploring high RPM gains. A new OEM engine is being sourced to continue testing.

NoHaveMSG · 02-12-2019, 08:52 PM

Quote:

Originally Posted by CSG Mike

The (aged) NA motor being used for testing failed while exploring high RPM gains. A new OEM engine is being sourced to continue testing.

RIP

Pouring a beer out for our dead hommie.

Code Monkey · 02-12-2019, 08:59 PM

Quote:

Originally Posted by CSG Mike

The (aged) NA motor being used for testing failed while exploring high RPM gains.

What RPMs are we talking about here? The usual 7,800 or did you guys push it past 8,000?

Tokay444 · 02-13-2019, 08:07 AM

Quote:

Originally Posted by Hawk77FT

CFm - after my intake manifold extrude honing.
Runner before after
1. 431 472
2. 433 474
3. 430 471
4. 427 468

Hope this helps

I'm actually quite impressed with the delta between the factory runners. Quite a well made unit, as one would assume something N/A at over 100hp/L would need to be.

Hawk77FT · 02-13-2019, 05:56 PM

Quote:

Originally Posted by Tokay444

I'm actually quite impressed with the delta between the factory runners. Quite a well made unit, as one would assume something N/A at over 100hp/L would need to be.

Well, I have used the new intake manifold (2017) for this exercise. The guy that did it for me said that it actually flows really well, and has seen these numbers on bigger engine Porsches...so, looks like the intake manifold is pretty well built.

Teseo · 02-13-2019, 06:40 PM

Quote:

Originally Posted by Hawk77FT

Well, I have used the new intake manifold (2017) for this exercise. The guy that did it for me said that it actually flows really well, and has seen these numbers on bigger engine Porsches...so, looks like the intake manifold is pretty well built.

And now the 17' intake manifold will cost more

staycrushing · 02-13-2019, 06:51 PM

Quote:

Originally Posted by Hawk77FT

CFm - after my intake manifold extrude honing.
Runner before after
1. 431 472
2. 433 474
3. 430 471
4. 427 468

Hope this helps

what did the honing end up costing you?

ive always tossed up the idea of doing that to the 2017 and sandblasting the outside and having it thermal coated to prevent heat soak.

Hawk77FT · 02-13-2019, 08:26 PM

Quote:

Originally Posted by Teseo

And now the 17' intake manifold will cost more

They are pretty much the same as the previous plastic one. Mine will cost more for sure.

Hawk77FT · 02-13-2019, 08:28 PM

Quote:

Originally Posted by staycrushing

what did the honing end up costing you?

ive always tossed up the idea of doing that to the 2017 and sandblasting the outside and having it thermal coated to prevent heat soak.

About 450 AUD and had it ceramic coated as well afterwards. Haven't had a chance to hit the dyno, but compared to my previous set up there is a quantifiable improvement for sure. I should get it done pretty soon!

MotoX16 · 06-10-2019, 11:53 AM

Bump, any updates?

Turdinator · 06-10-2019, 07:22 PM

Quote:

Originally Posted by Hawk77FT

About 450 AUD and had it ceramic coated as well afterwards. Haven't had a chance to hit the dyno, but compared to my previous set up there is a quantifiable improvement for sure. I should get it done pretty soon!

Have you had a chance to dyno your car with the manifold?

Hawk77FT · 06-10-2019, 07:46 PM

Quote:

Originally Posted by Turdinator

Have you had a chance to dyno your car with the manifold?

Mate, been very busy and completely forgotten about it. Will see if I can book it in sometimes next week!

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02-12-2019, 08:50 PM	#157
CSG Mike Join Date: Jul 2012 Drives: S2000 CR Location: Orange County Posts: 14,527 Thanks: 8,916 Thanked 14,174 Times in 6,833 Posts Mentioned: 966 Post(s) Tagged: 14 Thread(s)	The (aged) NA motor being used for testing failed while exploring high RPM gains. A new OEM engine is being sourced to continue testing.

06-10-2019, 11:53 AM	#166
MotoX16 Senior Member Join Date: Jan 2019 Drives: 2017 Subaru BRZ Location: Minneapolis, MN Posts: 199 Thanks: 62 Thanked 95 Times in 54 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Bump, any updates?

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