Looks like I'm going to miss another event!

[boost_boy]

Put the sentra back together with it's freshly done stock head and racing valve springs. The reassembly went fine except for the fact that the camshafts were very hard to rotate in the head. Turned over the engine and it got stock, so I'm like WTF. I remove the valve covers, loosed the camshaft bearing caps up to see if it would help, and the cam started rotating freely. Knowing that I put the right amount of torque on the cap bolts, I backed-off the torque a bit and reassembled the valve covers and prepared to fire it up. Since I just put fresh oil in the puppy and not worried about leaks, I didn't even bother to lift trhe oil cap. I cranked the car, it fired right up, lifters were a bit noisy, and after the car warmed up, the lifters were still a bit noisy, so I decided to lift the oil cap. Voila, I can't the biotch; it was mixing oil and water.

So I immediately checked my spark plugs and they were dry. So I did a compression test and got: #1=150, #2=155, #3=150, and #4=150psi respectably. I can safely assume either the head is cracked near a water and oil jacket or they forgot to put something back in. So now I'm stuck! @$$ed-out of more money when I could've easily just horse-shoe'd another engine in there. Phucking machinist ganked me again, but I'll be paying him a nice business with $$$s in mind. I'm going to throw my last complete stock on there if I can tomorrow and scrap putting on the suspension and just go with the slicks on my grimey 7 year/old Intrax/KYB setup. That ought to be fun, huh! Just thought I'd share my grief, but I still love the hell out of these motors and wouldn't dare scrap 'em for any other.

Forgot to mention that the damn car idles like a dream, but there is steam coming out of my wastegate dump.

Dee

[buffy]

Dam Dee, your luck sucks

[Bwana]

Really sorry to hear that D . Maybe the shop screwed something up and they'll cover it???

[originalsin]

ur turbo oil and water cooled? if so could it be mixing there anyway?

[boost_boy]

ur turbo oil and water cooled? if so could it be mixing there anyway?

TUrbo is just oil cooled! I changed the head to a stocker with stock cams and JDM junkyard everything; cleaned it up and threw onto the block with a reused stock CA18DE headgasket that I done up in copper spray. AFter I drained the oil, added new oil and filter, and then cranked the car, it still look frothy to me. So I was like "I know it's not my block", then I got frustrated and started revving the schnott out of the motor (2-stepping the hell out of it). Oil turned darked, pressure was always good, tried to take the car to track today, but the tech-bastards got cute about the way my battery was set-up in the trunk. They told me to go to a booth and buy a $100.00 battery box and I'm like "My @$$".

But the car runs wickedly-hard! I got a chance to flex it's muscle on the highway at 15psi sustained runs and 20psi visits and I can say for a car that was left for dead, somebody forgot to tell it that. All my hard work paid off. I'll leave the stock head on it for a while, so I can turn some attention to my other project sentra with the fully built engine. And in the mean time, i'll take the other head somewhere else to see if it's something wrong with or I just had some water in my system because the car's compression and idle quality was near perfect for a standalone.

Dee

[CA19DET]

wouldnt the machine shop have found cracks in the head while assembling it, and did you get the head and block decked to ensure a perfect seal?? and are you sure that NISMO HG that you use over and over with copperspray wasnt leaking?? were there any water/carbon/oil marks indicatin a leak?

sounds to me like you either need a new machine shop or engine builder, or both..

[boost_boy]

wouldnt the machine shop have found cracks in the head while assembling it, and did you get the head and block decked to ensure a perfect seal?? and are you sure that NISMO HG that you use over and over with copperspray wasnt leaking?? were there any water/carbon/oil marks indicatin a leak?

sounds to me like you either need a new machine shop or engine builder, or both..

The head wasn't damaged before the y did machine work because not only did it come off a running engine, it came off the block that I have in the car which was the one I had been doing dyno runs with earlier this year. My machinist has had too many isues with the CA's parts for me to continue taking stuff to him. AS for the NISMO gasket, I thought it to be suspect, but the deck and head surfaces are milled true and besides the fact that the cylinders were extremely dry and the car ran good except for the water flying out of my BOV and wastegate dump tube. When I pulled the in question, it had water in the exhaust ports, but the cylinders never sputtered.

Dee