[Bob_pipedream]

Hi all,

Thought I would start a new thread for this as it may be a very short thread - it is linked to my engine running rough mixture rich thread...

Engine Superior XP O-320 (carb) parts kit supplied 2007

I have had a look at the induction tubes and there appears to be a mismatch where they join the rubber tube joints to the sump. The induction tubes look to be about 1/16 to 1/8 of an inch too long and the rubber is taking up the step. There are no leaks, but it does look 'not right'. Superior have said that I have the right part numbers etc. but it may be that they have been fitted wrong (the recess not engaged to the tube). As it is on all four, I do not think this to be the case, so just wondering if anyone else has noticed a mismatch?

Solution will not be easy unless I can use different thickness gaskets. Otherwise I will have to take them to the machine shop at some point.

This may not be helping the fuel distribution in the engine.

Thanks,

Bob

 

[Bob_pipedream]

Hi all,

Kind of quiet about this, am starting to get very suspicious about my intake tubes as they really do not look right and there is a very definite front rear split between the cylinders. Fronts have a very sooty exhaust pipe where as rears do not. Front cylinders have a large step between the sump tubes and induction (intake) tubes. Also front cylinder have very low CHT and EGT at high speed 140kts+ but everything is even below this speed.

So now very tempted to cut the tubes and get them re-welded. They are stainless steel, so I will get a TIG welder to do it neatly.

What do you all think?