Re: What did you do in/on/for your Porsche today?
Posted: Sat May 01, 2021 9:59 pm
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That's all induction noise from the Webers. Noise test at 4000rpm showed exactly 100db.anglophone1 wrote:Triffic Keith- and you sold me your old exhaust because it was “too noisy”!
sounds brilliant, what engine set up do you have in there? I am thinking of getting the type4 in my 912E uprated, likely Weber 44IDF's 96x71s and a better cam.KS wrote:That's all induction noise from the Webers. Noise test at 4000rpm showed exactly 100db.anglophone1 wrote:Triffic Keith- and you sold me your old exhaust because it was “too noisy”!
71mm AA forged crank and H-beam rods, 96mm AA Biral cylinders, JE forged pistons, reworked 1.8 heads with 42 x 38 valves, Webcam 86a camshaft, dual 44 IDF Webers, SSI heater/headers, Vintage Speed S/S silencer. Makes 130bhp. Very drivable combination and simple to do. My plans were to build a bigger engine (82 x 96), but am now inclined to change the cam and heads, and bump the compression.70sThrowback wrote: sounds brilliant, what engine set up do you have in there? I am thinking of getting the type4 in my 912E uprated, likely Weber 44IDF's 96x71s and a better cam.
very nice, well if mine sounds and goes anything like yours Keith I will be very happy.KS wrote:71mm AA forged crank and H-beam rods, 96mm AA Biral cylinders, JE forged pistons, reworked 1.8 heads with 42 x 38 valves, Webcam 86a camshaft, dual 44 IDF Webers, SSI heater/headers, Vintage Speed S/S silencer. Makes 130bhp. Very drivable combination and simple to do. My plans were to build a bigger engine (82 x 96), but am now inclined to change the cam and heads, and bump the compression.70sThrowback wrote: sounds brilliant, what engine set up do you have in there? I am thinking of getting the type4 in my 912E uprated, likely Weber 44IDF's 96x71s and a better cam.

They look really great - what size did you go for and what's the finish?KS wrote:Couldn't resist...
Only for hillclimbs - they're 6 x 15 with 195/55 x 15 Toyo Proxes R888R. Silver painted centres with diamond-cut rims. I'll retain the TTs with Dunlops for the road.AndrewSlater wrote:They look really great - what size did you go for and what's the finish?
Are they going to replace your Torq Thrusts?






Some one is getting serious:)KS wrote:Only for hillclimbs - they're 6 x 15 with 195/55 x 15 Toyo Proxes R888R. Silver painted centres with diamond-cut rims. I'll retain the TTs with Dunlops for the road.AndrewSlater wrote:They look really great - what size did you go for and what's the finish?
Are they going to replace your Torq Thrusts?