924Board.org

[kondzi]

Would be nice to scan these in 3D and try to arrange one on the other in CAD software to see where the differences are. Unfortunately I don't have access to a 3D scanner and none anywhere nearby commercially available as I was checking. I don't want to send those though, being afraid I will lose my only mold I have
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Konrad
'89 951 US
'88 Mustang 5.0 LX Convertible (factory specs)
'84 911 Carrera 3.2 RoW (factory specs)
'81 931 RoW (TBD)
'81 Ford Capri 2.8i (factory specs)
'79 Ford Capri 2.9 (heavily modded)

[morghen]

If you want, you can send them to me, i'll scan them for you and send them back.
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Supercharger and EFI kits
https://www.the924.com

[Mike9311]

Morghen, maybe you can lend your input to this thought. Maybe he is missing the fin in the final cnc version because of the conversion from scan to a surface in the CAD software? The scan has such finite detail which then gets smoothed out when converting. Then, in a much smaller way, you have both the CNC software as well as the cnc itself 'smoothing' the tool path while following the surface within a specified tolerance

This is the issue I have been having myself as I convert the port from scan data to a surface.
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1980 931 since 1989
1981 Ideola 931 Club Sport
1982 931 Entwicklungsfahrzeug
1979 924 NA ohne 650 mit 471
1982 931 Red Resurrection - 951 IC
1982 931 parts car / resurrection?
1980 924 NA (R&D lightweight)
1982 931 wana-be GTR race car

[morghen]

Data conversion algorithms will always have an impact on actual values.
Generally i avoid using convertors, whatever i scan, i re-design myself by hand "under" the scanned surface. This gives me greater control over the resulting geometry but of course it takes a lot of time.
So if there is a mistake, i made it, not the software.
_________________
Supercharger and EFI kits
https://www.the924.com

[Mike9311]

[kondzi]

Thanks Ciprian, what I’m afraid is the courier losing the package
Currently I can live without the scan. I got the STP file though. But I only have a viewer. Can this step file be converted to something more useful?
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Konrad
'89 951 US
'88 Mustang 5.0 LX Convertible (factory specs)
'84 911 Carrera 3.2 RoW (factory specs)
'81 931 RoW (TBD)
'81 Ford Capri 2.8i (factory specs)
'79 Ford Capri 2.9 (heavily modded)

[morghen]

Yes it can.
_________________
Supercharger and EFI kits
https://www.the924.com

[kondzi]

Guys I discovered something nice today
I was resurfacing the heads on my lathe, and after that, cleaning the heads to prepare them for assembly in some time. As I was paying attention to get all that hair size aluminium leftovers removed, I discovered the seat, that was a 3-angle cut by factory, is no longer 3-angle seat. Now it's radius cut!
That could explain those few CFMs over my hand ported job results on flow bench, right?
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Konrad
'89 951 US
'88 Mustang 5.0 LX Convertible (factory specs)
'84 911 Carrera 3.2 RoW (factory specs)
'81 931 RoW (TBD)
'81 Ford Capri 2.8i (factory specs)
'79 Ford Capri 2.9 (heavily modded)

[kondzi]

Darn, how much I missed, No time to go through all of that.
But Anyway, yesterday it was dyno tuning day for the car with the above mentioned heads.
I got 320HP and 380Nm. I’m very pleased with the results (70HP gain and 70Nm gain over stock engine).

Will try to attach the dyno chart later.

Have a nice WE guys
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Konrad
'89 951 US
'88 Mustang 5.0 LX Convertible (factory specs)
'84 911 Carrera 3.2 RoW (factory specs)
'81 931 RoW (TBD)
'81 Ford Capri 2.8i (factory specs)
'79 Ford Capri 2.9 (heavily modded)