07-08-2018, 09:57 PM
very funny guys.
my piston is way oversized that's the way i got ity.
originally i was trading this motor for original mcculloch engine bolts. i traded three sets for the complete motor which supposedly had a bad block.
when it arrived it seemed ok except for a minor rib in the low ports.
as the motor was way overbored i decided to 9 port it for giggles.
turned out pretty good.
i was gonna stroke it but scott k. said no when he built it.
am glad i didn't it was plenty fast with 9 porting.
i finally got time today to break down my motor.
originally i had hopes the piston might be usable but no luck it is destroyed.
it kinda looks like the metal just failed from heat kinda weird where it stuck on the back ports a new place for me.
heres some pix of todays operation and a peak at the interior motor work i did.
here's the patient on it's repair tray.
not the best pix but you can see the aluminum all over the lining.it was so badly melted that it's stuck inside the port openings distorting the clean oval.
pix of exhaust porting oppsie i didn't get a great shot.
intake manifold side port work.
a blurry close up oppsie again!
9 port work
other views of aluminum in liner
wasted piston pix
my new toy got it a week ago.tested it on my mc10 aluminum
pretty good results considering i did zero prep work just a quickie buff.
d
my piston is way oversized that's the way i got ity.
originally i was trading this motor for original mcculloch engine bolts. i traded three sets for the complete motor which supposedly had a bad block.
when it arrived it seemed ok except for a minor rib in the low ports.
as the motor was way overbored i decided to 9 port it for giggles.
turned out pretty good.
i was gonna stroke it but scott k. said no when he built it.
am glad i didn't it was plenty fast with 9 porting.
i finally got time today to break down my motor.
originally i had hopes the piston might be usable but no luck it is destroyed.
it kinda looks like the metal just failed from heat kinda weird where it stuck on the back ports a new place for me.
heres some pix of todays operation and a peak at the interior motor work i did.
here's the patient on it's repair tray.
not the best pix but you can see the aluminum all over the lining.it was so badly melted that it's stuck inside the port openings distorting the clean oval.
pix of exhaust porting oppsie i didn't get a great shot.
intake manifold side port work.
a blurry close up oppsie again!
9 port work
other views of aluminum in liner
wasted piston pix
my new toy got it a week ago.tested it on my mc10 aluminum
pretty good results considering i did zero prep work just a quickie buff.
d
Dave L.