Compression problem

[joeblo]

Could this be why I have no compression?

 

[efriedrich]

No, thats not it..

 

[MiradaMegacab]

JB Weld will fix that!

 

[joeblo]

I was thinking the same thing! A little JB Weld and cut some new ring grooves with a hack saw, should be as good as new.

 

[joeblo]

Maybe While I am at it I will put a little extra on top of the piston to raise the compression ratio.

 

[Erics5th]

Whoa. Pre-ignition much? :bom:

 

[Shorty Thompson]

what's the jug look like ?

 

[joeblo]

Cylinder and head looks good. This is a Dodge Shadow 2.5. Car was wrecked then sat for over 10 years.

 

[joeblo]

Always had a miss to it, thought I would take a look inside and this is what I found.

 

[MiradaMegacab]

Stock 318 cast piston, 6 PSI of boost, 150 shot of N2O, 7000+ RPMs , blown headgasket caused engine to hydrolock.

 

[kkritsilas]

Stock 318 cast piston, 6 PSI of boost, 150 shot of N2O, 7000+ RPMs , blown headgasket caused engine to hydrolock.

Combination of boost and 150 shot was almost predictable in its effects on a stock cast piston. It is doubtful that a 150 shot alone would be reliable with a stock piston. Adding that to an engine running 6 lbs of boost was a guaranteed engine blowup. The connecting rod didm't breal. it shattered probably from the hydro-lock.

Joeblo:

That couldn't be it, must be a plugged exhaust cat or exhaust. I'd put that back in there. Just rJB Weld those rings together, rivet them back onto the piston, and put it back in. Should be good to go.

Seriously, are there still replacemtn 2.5L pistons around?

Kostas

 

[My imp]

Stock 318 cast piston, 6 PSI of boost, 150 shot of N2O, 7000+ RPMs , blown headgasket caused engine to hydrolock.

Shot preened from the inside out! Add a little WD-40 & acetone, & save on block cleanup also!