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[1380 K]

Hi there. 

 

Recently i installed a brand new MED 7 port cylinder head onto my 1380cc motor. Head was installed with ARP studs and is running minispares roller tip rockers. 

 

The motor was built about 4 years ago with occasional use on weekends etc, so i consider the motor to still be quite fresh. 

After installing the head and getting it running, the engine started to blow white smoke. On further investigation all 4 cylinders had a considerable amount of oil in them (even amount of oil in the 4) 

 

Ive since changed the head gasket and valve stem seals. Also a machine shop had a quick look and tested the valve seats and stems, both being fine. But the same issue persists. 

 

Just wondering if anyone has had any issues like this with the 7 ports or has any theory's as to how the oil is getting in the cylinders. 

 

Cheers, Tom

[mini13]

I'd say get a leak down test done,

I would think it's either coming up past the rings, maybe due to poor bed in, or fuel wash, or in via a breather if you have one fitted to the inlet (guessing probably not)

Is the crank case we'll vented? If not it could be pushing up past the rings due to crank case pressure,

Also what guide seals are fitted? And are they on all 8 valves? I'd use the late mpi Viton ones in all 8