DP #24 Engine failure....

Rich Biebel · 04-04-2010, 07:17 AM

What gear are you doing burnouts in?....

Use high gear or start in second and quickly shift to high and watch the tach closely..........Starting in low allows the engine to rev much too quickly....,

No need to do a burnout anymore than 500rpm over converter stall

Trying to determine what broke in a major engine blowup is difficult.

If it had spun a bearing it would be easier to diagnose.......but any blueing of the crank or rod has me thinking that is where the event started....

Suffice it to say 8000+ rpm is to high. Any contact between the piston and the valve is enough to start a catastrophic failure.......

Without testing how do you know your engines rpm limits? It is much better and safer to approach that from a conservative side....

Small block Chevs are known for being able to spin very high with ease......Stock solid lifter small blocks could go to 8000rpm or higher.......BUT they did not make power there and they usually broke within a short number of runs at that kind of rpms without many parts upgrades....

04-04-2010, 07:17 AM	#7
Rich Biebel VIP Member Join Date: Jun 2007 Location: Northern New Jersey suburbs Posts: 2,314 Likes: 25 Liked 544 Times in 213 Posts	Re: DP #24 Engine failure.... What gear are you doing burnouts in?.... Use high gear or start in second and quickly shift to high and watch the tach closely..........Starting in low allows the engine to rev much too quickly...., No need to do a burnout anymore than 500rpm over converter stall Trying to determine what broke in a major engine blowup is difficult. If it had spun a bearing it would be easier to diagnose.......but any blueing of the crank or rod has me thinking that is where the event started.... Suffice it to say 8000+ rpm is to high. Any contact between the piston and the valve is enough to start a catastrophic failure....... Without testing how do you know your engines rpm limits? It is much better and safer to approach that from a conservative side.... Small block Chevs are known for being able to spin very high with ease......Stock solid lifter small blocks could go to 8000rpm or higher.......BUT they did not make power there and they usually broke within a short number of runs at that kind of rpms without many parts upgrades.... __________________ Rich Biebel S/C 1479 Stock 147R Last edited by Rich Biebel; 04-04-2010 at 07:41 AM.