Finally got some dyno numbers - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

KrazyZenki · 12-20-2006, 06:32 AM

We almost had the car tuned til I got owned by the cometic HG. We got it fully tuned on 13psi and it made around 355rwhp and then we turned it up to 18psi and did a pull before we started tuning it and it made 414rwhp. We were tuning it and when the tuner got into the throttle it started spraying coolant out of the radiator(there was no resevoir on the car so the nipple under the radiator cap was open). So we checked the pressure in the radiator and at idle it was 16psi and as soon as you gave it gas it jumped up to 22psi. So we checked for water in the oil and oil in the water. Everything was clean. So we checked the coolant for any exhaust gases and sure enough had exhaust gases in the coolant. So the HG didnt give out but apparently it has a weak design in sealing around the cylinder so its allowing exhaust gases to pass by and get into the water jackets. Im going to put an Apexi HG on there and get the tuning finished and see how much it makes. Im hoping to hit 430rwhp on 19psi. Seems attainable with it making 414rwhp on 18psi not fully tuned. Heres a quick mod list

S13 SR20DET
GT3071R .63
Custom Top mount manifold
GReddy intake manifold
GM 3 bar map sensor
AEM EMS
AEM Wideband
Brian Crower 264s

12-20-2006, 06:32 AM	#1
KrazyZenki Zilvia Member Join Date: Aug 2005 Location: Las Vegas/Georgia Posts: 163 Trader Rating: (1) Feedback Score: 1 reviews	Finally got some dyno numbers We almost had the car tuned til I got owned by the cometic HG. We got it fully tuned on 13psi and it made around 355rwhp and then we turned it up to 18psi and did a pull before we started tuning it and it made 414rwhp. We were tuning it and when the tuner got into the throttle it started spraying coolant out of the radiator(there was no resevoir on the car so the nipple under the radiator cap was open). So we checked the pressure in the radiator and at idle it was 16psi and as soon as you gave it gas it jumped up to 22psi. So we checked for water in the oil and oil in the water. Everything was clean. So we checked the coolant for any exhaust gases and sure enough had exhaust gases in the coolant. So the HG didnt give out but apparently it has a weak design in sealing around the cylinder so its allowing exhaust gases to pass by and get into the water jackets. Im going to put an Apexi HG on there and get the tuning finished and see how much it makes. Im hoping to hit 430rwhp on 19psi. Seems attainable with it making 414rwhp on 18psi not fully tuned. Heres a quick mod list S13 SR20DET GT3071R .63 Custom Top mount manifold GReddy intake manifold GM 3 bar map sensor AEM EMS AEM Wideband Brian Crower 264s