911 2.4 to 2.5 question (again)

[wtch]

Hello,

One year and engine rebuild is almost ready.

Almost every parts has been replaced, list is endless.
Engine originally 2.4 T (MFI) 1973

I am tuning my motor :
PISTON: 86mm FORGED JE PISTON
CYLINDERS*: ALUMINUM*BIRAL*
PISTON RING: HIGH PERFORMANCE RINGS: Top*1.5mm**2nd: 1.5mm Oil: 4mm
COMPRESSION HEIGHT: 33.91mm (1.335")
Compression ratio is >9.5
Gasoline used 98 oct
E-Camshafts
Ported Heads (measured to +300 HP)

Could anyone estimate torgue and horsepower.?

Thanks advance wtch

[wtch]

i have also extra oil cooler front.

My mecanic says that estimate of HP's is something about 160 Hp. If i could find better cams ..i could get some extra more HP

Any one has experience about those aa cylinders, JE pistons are ok?

[regency]

Hi, are you running the original "T" MFI ? The "E" throttle bodies are bigger than the "T" as well as the stacks.

Steve

73 911 T MFI Coupe, Aubergine

[wtch]

Originally Posted by regency

Hi, are you running the original "T" MFI ? The "E" throttle bodies are bigger than the "T" as well as the stacks.

Steve

73 911 T MFI Coupe, Aubergine

Its Original T-MFI.

MFI has been checked, but throttle bodies are original ones.

[regency]

Hi wtch, I built a similar engine, 85's, J&E's, E cams. However, I had the MFI pump re-worked to E spec by Gus at pacific injection and I had the T throttle bodies rebuilt and enlarged to E as well. I also replaced the plastic T stacks with E stacks.
I don't know what kinda HP I'm making but I'd guess 325 ( kidding ). Still, it's is a very fun engine combo.

Currently building a 3.2SS engine based on a 78 3.0

Steve

73 911 T MFI Coupe, Aubergine

[regency]

Hi wtch, I built a similar engine, 85's, J&E's, E cams. However, I had the MFI pump re-worked to E spec by Gus at pacific injection and I had the T throttle bodies rebuilt and enlarged to E as well. I also replaced the plastic T stacks with E stacks.
I don't know what kinda HP I'm making but I'd guess 325 ( kidding ). Still, it's is a very fun engine combo.

Currently building a 3.2SS engine based on a 78 3.0

Steve

73 911 T MFI Coupe, Aubergine

[wtch]

Originally Posted by regency

Hi wtch, I built a similar engine, 85's, J&E's, E cams. However, I had the MFI pump re-worked to E spec by Gus at pacific injection and I had the T throttle bodies rebuilt and enlarged to E as well. I also replaced the plastic T stacks with E stacks.
I don't know what kinda HP I'm making but I'd guess 325 ( kidding ). Still, it's is a very fun engine combo.

Currently building a 3.2SS engine based on a 78 3.0

Steve

73 911 T MFI Coupe, Aubergine

Thanks Steve,

Maybe i need also find those stacks and throttles.

How about that kind of camshaft is it too tight?

Nockenwellen für Porsche 911 RSR ähnlich, Satz für einen Motor = 2 Stück | eBay

I am trying to get funny motor and few hp more

I have all original parts still.

Good luck to your new project.

[regency]

wtch, I'm no professional Porsche engine builder so I really can't suggest what cams to use. You can send your T throttle bodies to Matt Blast at Eurometrix ( Boston area ) and he'll re-build them to E spec. You can also send him your T stacks and get them enlarged ( I think you can ). Then you might as well get the pump done too.....the whole pkg.

Steve

73 911 T MFI Coupe, Aubergine

[wtch]

does anyone knows if i need twinplug?
I dont know exact cr?
We are using in Finland 98 to 100 oct gasolin (newer cars are using 95 oct mostly)

Where i could find those ge40 cams?