I've brought a mk2 astra thats been converted with a calibra turbo engine and box, I'm going to be taking the engine out soon and swapping it with the 2.0 8v thats currently in my nova,
I'm pretty clueless with turbo's and have never driven one properly before today, I just need a bit of educating, thanks
I took the astra out earlier for a drive and noticed that it puffs some smoke, blueish in colour, is this a turbo rebuild on the way? or valve stem oil seals knackered?, Its not so noticeable at idle, more when you rev it up and then back off,
Also when the car was boosting up everynow and then it would knock as if it was misfiring, is this detonation, and hence bad for the pistons?,
From what I've read on richies site bleed valves are a bad idea - this engine has one should I take it off?
Any idea what the oil is in the turbo engine? if its a fully synthetic, then it'll drag that straight through the turbo. How many miles on it? could be the seals in the turbo, not sure how much for a recon though!
Saj- the engine will be going into my nova once I've got it running sweet, then I'll put my current 2.0 8v back into the astra to sell it on and make back some of the money I paid,
The oil in the engine could be synthetic as one of service receipts I've got with the car mention synthetic oil, The previous owner isn't mechanically minded and any work done on the car was done in garages, even tightening the fan belt!
There is a boost gauge but as it was the first time I'd driven the car I wasn't really looking at the gauge, but I'm sure the needle went above 0.5 bar, a friend of mine did mention that the actuator looked as if it had been wound right out (so to speak)
I`ve got the exact same problem with my car.Only smokes when ya shut the throttle completely from high revs.As soon as ya get back on the throttle it gives a puff of blue smoke.If i keep the throttle open then no probs.I guessed that it would be stem seals as the engine was completely rebuilt by me except for the head which i let somebody else sort out,but no guarantees that the stem seals where changed