Got the engine in and had it running. I put 6 miles on it with the turbo elbow open, just a run for smokes
I got the exhaust on like monday and started it up. After it ran for a few minutes it began to smoke a lot. Lots of white smoke, also had water coming out of the tail pipe. Sounded like a head gasget.
New gasget is on and properly torqued in sequence. Got it timed and running today and I get the same thing. Small ammount of smoke coming from radiator cap and tons of whiteish smoke from the tailpipe at idle. When I held it at 2K RPM the smoke went away, at idle it started to fill the yard with smoke like the house was on fire.
Friday comes the leak down test and compression test to see if anything is a miss.
Quick list on the combo:
Ported head w/ big valves and dual springs
essy 2277 cam
Essy round tooth timing kit
Block .20 over, crower rods, diamond pistons
windage tray
new aux shaft
reman dizzy from napa
Cheaper felpro HG and stock 12pt head bolts.
What else could cause this other than a HG or warped surfaces ? I am at a total loss here.
well, it could be the turbo leaking into the downpipe? I had one fail on me this way, and a replacement with a missing oil seal even worse.
Doesnt explain the smoke out the radiator cap, are you sure that isnt steam? If there is smoke, you should see bubbles too?
Cold engine will push condensate out the tailpipe.
Just some ideas.
It might also be that cam, want to sell it to me cheap
Bob Myers
Hmmmm - ported head - did the machinist get into the jackets maybe? Does the smoke smell like antifreeze or oil burning? I put a Taurus back together that had a BHG....smoked like crazy when I first fired it up....turns out antifreeze had gotten into the exhaust system before and during the teardown and sat there until it finally evaporated after running for like 25 miles.....
Weird thing is that I ran it for 30 minutes with non-detergent oil with the open turbo elbow and no smoke. Took it for a 6 mile drive and never saw smoke, this is with the open turbo elbow. Got the exhaust on and let it idle for a couple of minutes and a huge plume of smoke came out of the tail pipe.
The radiator has been spitting out a bit of coolant as if it is boiling over but its not half as hot as it needs to be to actualy boil over. It will usualy just spill some out the overflow hose and then stop after it leaks enough to run down the driveway.
Is the smoke oil or coolant?
The smoke appears to be coolant, before the HG was changed I was getting water out of the tail pipe with the smoke. Now its just lots of white sweet smelling smoke, keep in mind I am a smoker so my sence of smell is not the best.
I do have a list of variables in my head, Ill throw them out and see if anything makes sence.
-When I got the block and head I layed the gasget on the block and then the head on the gasget to paint the assembly. It was there for about a month, I think that could have very well crushed the gasget a bit. That was the old gasget though.
-The deck on the block was taken down 30 thousandths, the head I am not too sure of but I know it was milled a bit to be made true. This is Glenns old head. Could the dowels be too long now and be holding the head up a bit causing the gasget to leak ?
-Lastly is the cam timing. I had it e-bared, then compared that mark to the stock cam gear. The marks were of by about 20 or so degrees. The engine was on the compression stroke and then we got the cam to 0*. On TF it said to get the engine to TDC on the exhaust stroke, if you changed the cam timing couldnt you call that TDC on the compression stroke if you changed the cam timing ? That is whats confusing me. I had the engine at TDC and the lobes pointing up, then measured the block of wood I used from the v/cover mating surface.
I am going to do a leakdown test tomorow, I have homework to do and I want to be the smart kid
lol. That and I'm getting burnt out on this thing too. Anybody have any input on this, other than putting it together right lol ?
Sounds like coolant....So, you had smoking and coolant coming out of your tailpipe before you fixed it? Reference my post above if you did. Could the dowels be holding the head off of the mating surface - yes - dont ask me how I know. Although, when I did it (did I just say that out loud) on a 71 240Z straight 6, coolant came out of the side of the motor where the pins were from between the head and block. Are you getting any coolant in the oil or vice versa? How does the engine run? Any misfiring?
All seems to be well now. Maybe just over paranoid ? It was running fine with no adjustment, no hesitation or anyhing. Took it for a short trip around the block and it seems to have more power now. It was real boggy before I re-timed the cam.
The smoke might have been crap in they cyls from the gasget change, I'm still unsure but its just about completly gone. I can understand a little bit, allmost ready for a rebuild turbo and the rings not being fully set.
Thats good news - I hate rework.....