How Bad is this?

I

isowavey

Location
Michigan
Hey Friends,

I have a blaster with a riva engine, etc.

Had it rebuilt and ran like 5 tanks of gas thru it. Started very hard from a cold start but ripped once warm.

Yesterday was out shreding for hours. Spark plug wire came loose in the middle of the lake -- I went to shore and ski smoking and no power. 20200718_192954.jpg

There is metal shavings on the head and I seen this crack in the engine head.

How bad is this? What am I looking at here to fix?
 
I

isowavey

Location
Michigan
Also not sure if relevant but last guy to work on it put in champion plugs.

I always used ngk in the past. Not sure if this effected it I'm not a mechanic just a shredder.
 
I

isowavey

Location
Michigan
Mdavies_02 said:
Hopefully just broke an exhaust mount? Your about to become more of a mechanic than you'd like.

Post a better picture of your engine. Compression test before you do anything.
Click to expand...


thanks so much for the reply. Would that explain the loss of power from the cracks?

heres a full shot of the engine
 

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jetx

jetx

Location
Midland, Ontario, Canada
Thats an odd looking head, never seen anyting liek that before...Id check compression first, if thats good than try a new set of NGK plugs, than if that doesnt work start working through other possibiites, coil, cdi, carbs, tank vent, etc
 
I

isowavey

Location
Michigan
jetx said:
Thats an odd looking head, never seen anyting liek that before...Id check compression first, if thats good than try a new set of NGK plugs, than if that doesnt work start working through other possibiites, coil, cdi, carbs, tank vent, etc
Click to expand...


thanks for the feedback here :) Is it ok running with those cracks?
 
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