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1,000HP A-460 Headed 565 BBF

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1,000HP A-460 Headed 565 BBF  Empty 1,000HP A-460 Headed 565 BBF

Post  G-Code May 22nd 2021, 11:04 pm

From the "Quick and Dirty" rebuild thread:

4.605 bore x 4.25 stroke = 565 actually 566"
A-460 Block
Crower/Ford Motorsport crank 4.25 stroke
Crower rods w/ BBC journal 6.535"
Heads: 1st Generation Ford Motorsport A-460 heads angle milled with 2.40" Ti intake 1.88" Ex w/ 66cc chamber
13:1 Compression
Intake: TFS Tunnel Ram -  2 -1,050's   C&J Engineering
(Cam new for rebuild)
Custom Comp Roller:  275/277 @ .050 with .455/.421 lobe lift,  113 lobe sep. dur @.200  196/186   ( Net lift .801 - .745 )
T&D Shaft rockers 1.8 ratio
Manton Push rods 3/8" thick wall.
PSI- Super Clean Silicone valve springs   295 on the seat. 715 over the nose.
Arias pistons, gas ported (Atomic )
Fresh rings for rebuild:
Akerly & Childs ring pack .043, 1/16th, 3/16th  (stainless top, napier second, 10lbs oil ring)
New for rebuild:  Williams oil pan  oil pan dual kick outs 11 qrts
Kaase oil pump
MSD crank trigger
Cometic head gaskets .045

New for rebuild:
Danny Bee belt drive
GZ Vac pump Super Pro (kit )

" Quick and Dirty Rebuild thread"  -  
https://www.429-460.com/t28404-quick-and-dirty-rebuild-of-the-565-thanks-lem

This would not have been possible without the help of my old friend Geoff Mummert - Mummert Machine and Development. Geoff did the heads on this thing back in 2003 (18 years ago)  We put it back together in his shop space in the evenings and weekends.  Geoff also did the work on the intake for this go around and freshened up the heads.

Much thanks to Lem on sourcing the parts from the head and intake gaskets, rings, cam bearings, Danny B (from 7 years ago) a fresh belt for it and probably a few more things .... Thanks Lem
Dyno Day:

1,000HP A-460 Headed 565 BBF  IMG_4530
1,000HP A-460 Headed 565 BBF  IMG_4547


Sunoco 110 with 32* timing:
1,000HP A-460 Headed 565 BBF  IMG_4550
1,000HP A-460 Headed 565 BBF  IMG_4559

Sunoco 110 with a "splash" of Q16
1,000HP A-460 Headed 565 BBF  IMG_4558

1,000HP A-460 Headed 565 BBF  IMG_4557


Last pull for the day:  " I think we're done"
https://vimeo.com/user136758777


Last edited by G-Code on May 23rd 2021, 12:37 am; edited 6 times in total

G-Code

Posts : 168
Join date : 2010-07-12

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Post  G-Code May 22nd 2021, 11:05 pm

When we left the dyno in March we were done with a number at 972 hp at 7,400.  We figured we had left a bit on the table with the electric vac pump and the intake not being fully ported. We had some distribution issues cly 6 & 7 that weren't helping the power at all.

Best pull of the day in March:
1,000HP A-460 Headed 565 BBF  IMG_3828

Notice the AF on the Lambda at 12.2.  This engine has always made more power at 13:1 or closer than 12:0 ( the cly to cly sensors read 6/10th leaner.)

Cly to Cly AF's - March
1,000HP A-460 Headed 565 BBF  IMG_4572

That was after a ton of jetting and air bleed changes.

We figured with some manifold work and possibly shear plates we could get the AF's better.  

Mummert went after the intake manifold and took it from this:
1,000HP A-460 Headed 565 BBF  IMG_3929

To this:
1,000HP A-460 Headed 565 BBF  IMG_4118
1,000HP A-460 Headed 565 BBF  IMG_4119

We got a couple of  Wilson shear plates for the TR lid:
1,000HP A-460 Headed 565 BBF  Shear_Plate_2
1,000HP A-460 Headed 565 BBF  IMG_4135
1,000HP A-460 Headed 565 BBF  Shear_Plate_bottom_1

And last but not least a Vac pump from Bill at GZ. His Super Comp kit
1,000HP A-460 Headed 565 BBF  IMG_4497
1,000HP A-460 Headed 565 BBF  IMG_4496

While we were at it I also replaced the old Steph's oil pan for a new pan from Williams:
1,000HP A-460 Headed 565 BBF  IMG_4463(1)

So with everything bolted back together off we went to Westech for another run at it:
1,000HP A-460 Headed 565 BBF  IMG_4530

After a few pulls we ended up here and made the same number +/- 2 hp 3 times:
1,000HP A-460 Headed 565 BBF  Run_8_corrected

Here's how the Cly to Cly air fuels looked: This is with the same jetting as in March
1,000HP A-460 Headed 565 BBF  IMG_4573

So after making the third pull to 998 at 7,600 it was time for the K&N velocity stacks with air filters. They slow the air down over the carb and allows the  booster to get a better signal:
1,000HP A-460 Headed 565 BBF  IMG_4547

The next pass we got this:  Sunoco 110 with 32* timing

1,000HP A-460 Headed 565 BBF  IMG_4559

AF with Velocity stacks:

1,000HP A-460 Headed 565 BBF  IMG_4574

We made another pull to back it up and then we checked the fuel and there were a couple gallons left in the tank.  We added a gallon of Q16 on top of that and produced the 1,010 at 7,700 number:
1,000HP A-460 Headed 565 BBF  IMG_4557

So we got the number but it is 200-300 rpm higher than the goal of 7,400.  

Maybe before the end of the year the 565 might make it back on the dyno to to try a few things before it comes apart next year and the 600",  11.25:1, 1,000hp  pump gas deal gets built. ( New set of A460 heads that will flow in the 480 cfm range)  Maybe before this come apart I'll have the tunnel ram "printed" to run.

1,000HP A-460 Headed 565 BBF  IMG_4236
1,000HP A-460 Headed 565 BBF  IMG_4240
1,000HP A-460 Headed 565 BBF  IMG_4196

3D printed at 3/8th scale:  runner length designed for the 3rd harmonic at 7,200 and plenum size designed for this engine size (range)

1,000HP A-460 Headed 565 BBF  IMG_4241

"Twisted" carb to better distribution:

1,000HP A-460 Headed 565 BBF  IMG_4294
1,000HP A-460 Headed 565 BBF  IMG_4292

Firing order 1-5-4-2-6-3-7-8

1,000HP A-460 Headed 565 BBF  Mid_plenum

Cly 1 & 5
1,000HP A-460 Headed 565 BBF  Front_2_cylinders(1)

I have a couple other sims that are better than these, but I'm still learning from them to help improve the design.

There will be power in this manifold for the intended rpm range.  Once that's done we'll address the cam for the 600" deal.


Last edited by G-Code on May 24th 2021, 1:07 am; edited 3 times in total

G-Code

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Post  G-Code May 23rd 2021, 10:58 pm

Before the scoop gets made it will run one of these setups ... Not sure which yet:

1,000HP A-460 Headed 565 BBF  IMG_4634
1,000HP A-460 Headed 565 BBF  IMG_4633

85

G-Code

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Post  G-Code May 24th 2021, 5:31 pm

Keep in mind that YOUR RESULTS MAY VARY ........

Vac Pump Review:

In comparing power numbers with a vac pump and without ...

1st: This engine had a back yard  hone job with a dingle ball:
1,000HP A-460 Headed 565 BBF  IMG_3584
1,000HP A-460 Headed 565 BBF  IMG_3587

It got a fresh set of rings  .043- 1/16th- 3/16th oil ring.  (oil ring is 10 lbs tension)

Run 5 on the dyno matched the last power run from March  Pk Trq 5,900   770 lbs ft  Pk Pwr  7,400   972 hp
Electric Vac pump pulling just at -1.0'

We put the GZ Vac pump on and made a few passes. # 8 is the best comparison apples to apples:  - 9.0"  Vac

Pk Trq 5,900  769    Pk Pwr  7,400   989 hp  

Apples to apples  it's 17 HP.

On this application it made more HP with -9" than it did with -10.5".  10.5" showed 985 hp.  

With the future build the ring pack will be  .043 - .043 -  2 mm oil ring.  The Vac pump will earn it's keep with that setup.


Your results my vary.

G-Code

Posts : 168
Join date : 2010-07-12

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