Yea j'd was reading a post on 2a engine lol..... Comp hot with all plugs out and throttle wide open ... 115..100...100...110
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Yea j'd was reading a post on 2a engine lol..... Comp hot with all plugs out and throttle wide open ... 115..100...100...110
Another thought about that pop!
What heat range spark plugs are you running?
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Pop vanished with some retardation.. Nkg 4BES
Should read NGK B4ES and they are too hot as they are equivalent to Champion N21, I would only use them in a very smokey oily sick engine !Quote:
Originally Posted by mfc
Try Champion N8 or NGK B6ES and advance the timing slightly after you have fitted them.
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Mine doesnt leak any more but still burns a bit. My compression test showed 120/125 all pots, has plenty of power and plugs are clean lean burning if anything. Looks like my inlet valve seals may need doing. Is this a job i can do myself or does it require a machine shop with presses etc.
Mike,:)
Mike,
It is an easy job to do yourself - usually the cylinder head is removed and it is done on the bench. The only special tool required is a valve spring compressor available from any automotive parts and tool supplier.
However; whilst the head is off it is a good time to inspect for valve guide wear. Slide the valve down its guide a bit and try to wiggle it sideways; if it moves appreciably then take the head and valves to an engine re-conditioner, who will re-sleeve the guides and re-cut the valve seats.
Parts needed; head gasket, rocker cover gasket; valve seals; thermostat housing O-ring; inlet manifold gasket; high-temperature silicone for an exhaust gasket. Check the exhaust manifold for flatness, whilst is off and get it sanded if it is warped,
Cheers Charlie