Random- but I thought this was kind of cool- Bordem at it's finest

that ones been around for a while!

Blower surge on a carbed engine = poor tuning. The only real reason you should be surging with a carb is to save your transmission/outdrive etc with mega horsepower when putting it in gear. At least that's how it's been explained to me by some very reputable engine builders.

Well..........I was told the surge was an indication of being rich where you want to be w/ the blown motors..and most of 'em do it, so wut up?

I heard the same . A blower motor on the lean side will definatly detonate and burn a hole in the pistons . Next thing you know Rods scratching his head wondering what the fuk happened . Running a blower motor on the rich side also helps cool the intake charge .

-beerjet-

Surging is actually caused by the engine burning up the small amount of fuel being pissed in at idle. As it burns up this fuel the blower forces more vacuum and the carb has no choice but to let fuel through the annular boosters. So no, blower surge is caused because the blower is forcing a rich-lean-rich-lean situation not because the carb tuning is rich. There are fouled plugs, then there are blower surge fouled plugs... I'm not an engine builder by any means, I'm definitely just an assembler... How often do you see a professionally built/tuned engine that's not a blown alcohol injection motor surging?

Example, my buddy's boat ( ) before tuning the carb. Sounds bitchin, but it's really a sign of poor tuning. Or maybe some people just like the sound.

If you have tuning questions let me know, I'm not an expert by any means. I wouldn't feel comfortable messing with someone elses stuff. But I can put you in contact with a couple professionals who are willing to share some knowledge.

sweet, looking forward to it. There's nothing like the sound of a blown big block...

Sent you a PM. John is pretty good.

niiiiice 

glad to see that its running again

Ok so can I contribute too This is a motor Josh built for my neighbor and (buddy) Hondo Hal a couple season back ,on this day everyone fired thier motors in the cove @ 7;00 pm as a tribute to a "freind who passed"
listen also to the background noise in the canyon Tom


And then theres the cruiser (destined for a fresh motor and bigger blower this month)... and yeah I always forget to turn the Cam off lol

thanks undone  Mr Heinaman (Hal) will get a kick out of that :} Tom

Here's some good info about the surge

http://www.hotboat.com/forums/showthread.php?t=161430

Sorry to sound like a total novice, but will the surge of a carburated blown motor hurt the motor??  Between the surge and the whine of the belt- those are the 3 biggest reasons for me to buy a blower- and I guess the HP is cool too