5150DSM
Supporting VIP
- 856
- 4
- Jan 5, 2004
-
Sacramento,
California
A sad day in the DSM world, at least my DSM world. Been pushing the car lately, incrementally upping the boost and tuning for the new levels. I had planned to do water/meth soon and was trying to max out my set-up beforehand, see how far I could take it on pump.
Yesterday I had 18psi, with 0 knock and 30* of total timing at 6500, car was feeling great, injectors were only at 71% DC so I figured I had a little room. This morning, upped it to 20psi and started my tuning runs. (on the way to work
)
Second pull at 20psi, right at 6156, I hear a loud PFUUUUT, and the car lost all power, sounded and felt like a I/C coupler blowing off.(Ask me how I know) Pull to the side of the road, car shuts off and won't restart. Sounds like there is no compression, motor spins and spins but doesn't even try to start. So, I have it towed to my shop.
At lunch I went out and was able to spin the motor freely by hand, cams and crank roll together, no binding, no stopping, etc... When I get to TDC I notice that the exhaust cam is 1 1/2 teeth off. Ok, so I jumped time a little, my old ass hydraulic tensioner probably gave up the ghost. Whatever, been here before.
My question is... Would you think that I would hear the head gasket blow? And, do you think that is what I heard. Additionally, when I popped the hood I found that a large bolus of oil had spewed from the dipstick and coolant from the reservoir had spewed as well. Is this indicative of the HG or bent valves or both? Any and all replies are welcome.
Thanks
There goes my baby.
Yesterday I had 18psi, with 0 knock and 30* of total timing at 6500, car was feeling great, injectors were only at 71% DC so I figured I had a little room. This morning, upped it to 20psi and started my tuning runs. (on the way to work
)Second pull at 20psi, right at 6156, I hear a loud PFUUUUT, and the car lost all power, sounded and felt like a I/C coupler blowing off.(Ask me how I know) Pull to the side of the road, car shuts off and won't restart. Sounds like there is no compression, motor spins and spins but doesn't even try to start. So, I have it towed to my shop.
At lunch I went out and was able to spin the motor freely by hand, cams and crank roll together, no binding, no stopping, etc... When I get to TDC I notice that the exhaust cam is 1 1/2 teeth off. Ok, so I jumped time a little, my old ass hydraulic tensioner probably gave up the ghost. Whatever, been here before.
My question is... Would you think that I would hear the head gasket blow? And, do you think that is what I heard. Additionally, when I popped the hood I found that a large bolus of oil had spewed from the dipstick and coolant from the reservoir had spewed as well. Is this indicative of the HG or bent valves or both? Any and all replies are welcome.
Thanks
There goes my baby.
