Made a new dynorun as promised before. This is Rear Wheel hp! You can see the improvement over last time bij some 25 rwhp (266 RWHP over 241 last time). 266 rwhp should be about 300 flywheel hp
and did some street-legal racing at our local former airport dragstrip (Drachten):
In the above video the waterinjection was not working yet, but now it is :twisted: I hope to run a good time at EBI3 this year, but it will be on street tires, so no spectacular 60ft times are to be expected.
Some track day racing at Assen june 6th circuit with friends:
Superflo a écrit :What's your CHT with alu cylinder & turbo? Head sealing is ok?
CHT doesn't get above ~375F under full boost. 350F when running ~120 km/h on the autobahn in 5th running 3100 rpm.
Fuel consumption is 1:10 at 100-110 km/h constant, but gets easy to 1:9 with a little bit more speed/acceleration now and then
Head sealing with the experimental sealing technique (no, I am not allowed to disclose) we used is perfect: Not a drop or sweat on the first head fins!
EGT is now the one to watch out for for me
Coming wednesday another dyno run with the WI working at Steve's VW shop in belgium. Its his 'open house' and 'dyno-day'. Anyone here going to come?
The digital gauge shows 170-190°C @ 130km/h and 240+ @ 200km/h. Sensor is under sparkplug #2 and the shroud is a BAS, I know those temperatures are very high, a well balanced shroud could improve that.
Actually those temps are not extremely high. 190C (400F) at 130 km/u is about the max I would run for longer periods. I consider 225C the approximate limit for this on original (old) castings. 240C (~500F) for short periods of time will hold, but try to avoid it.
Your running now under cyl.2, while cylinder no.3 gets even a little hotter in the BAS shroud...
If your running new (AMC) heads, the casting can probably take a little more heat.
Your temps I consider common for large type 4's with a similar build. It shows they usually run too hot on the heads imo.
Thanks for sharing.
and performance !! 
