5.7 Hemi Road Runner w/small super charger #3
Posted: Fri Feb 12, 2010 2:50 pm
Since my last post 5.7 Hemi w/ small super charger #3
Had the car running last fall,not finished,no chrome,not detailed etc.
We drove the Road Runner about 300 miles,lost four piston tops on the drivers side
Engine showed no signs of anything wrong,except some spark gaps had tighten up.
At that time we tried-indexing plugs-changeing spaek plug gaps-fuel-timming,engine
did not heat up or knock, ran very well,finally put a hole in one piston.
After this happened we had people come in or call with the same problem.
This seems to happen when you change the 5.7 or 6.1 to a different vehicle,computer change,
different wireing harness ? ( open for discusion)
Bought a new 6.1 Hemi block-deck was way off of posted deck specs,Callies 426 stroker kit
Built engine,installed on dyno,very small camshaft,supercharger 12 pounds of boost.
NOS,changed to E-85,picked up about 13 hp with E-85, thought it would be a lot more
since we do not have an inner cooler. Plus side it will run cooler.
Getting car ready to go to Cobo hall in Detroit MI. Auto-Rama
after that car will be a weeked driver,offically finished ?? ( 6-years )
Also we built or headers step 1/5-8 to 1/3-4
Will send pics to be Scott to be posted
Had the car running last fall,not finished,no chrome,not detailed etc.
We drove the Road Runner about 300 miles,lost four piston tops on the drivers side
Engine showed no signs of anything wrong,except some spark gaps had tighten up.
At that time we tried-indexing plugs-changeing spaek plug gaps-fuel-timming,engine
did not heat up or knock, ran very well,finally put a hole in one piston.
After this happened we had people come in or call with the same problem.
This seems to happen when you change the 5.7 or 6.1 to a different vehicle,computer change,
different wireing harness ? ( open for discusion)
Bought a new 6.1 Hemi block-deck was way off of posted deck specs,Callies 426 stroker kit
Built engine,installed on dyno,very small camshaft,supercharger 12 pounds of boost.
NOS,changed to E-85,picked up about 13 hp with E-85, thought it would be a lot more
since we do not have an inner cooler. Plus side it will run cooler.
Getting car ready to go to Cobo hall in Detroit MI. Auto-Rama
after that car will be a weeked driver,offically finished ?? ( 6-years )
Also we built or headers step 1/5-8 to 1/3-4
Will send pics to be Scott to be posted