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Dallas was working on the accelerator pedal on my car, and gas collected in the "bathtub" intake. He should have maybe cranked the car a little longer before putting fire to it. Once he hit the ignition switch the car briefly started then exploded this brand new intake. He had a nice little fire to put out -- and managed to smother it before having to grab the fire extinguisher -- which would have required rebuilding the new motor.
These intakes are notorious for doing this -- and I've been pretty lucky to have not blown one up in the 6 years that I've had one -- with as many passes as I make. A lot of people put burst panels in these intakes -- but even with a burst panel -- you typically do some damage.
A little damage occurred to the hood when the intake and carbs blew into it and it slammed down, and a little fire damage to the fenders.
I ran the intake over to Cruz at Diamondback Engines yesterday morning -- in the hope he'll get it back together for me to test the car in San Antonio on Wednesday.
A burst panel or would be a good idea.
It may have saved having to retap all the bolt holes. It seems to me that on my buddy's blower setup that it has a pop off valve backed up by a burst panel. Of course the valve is working under pressure. I am not sure how that would work with vacuum.
That is ugly.
Glad Dallas had what he needed to smother it.
So what is the new procedure for firing?
__________________ "The democracy will cease to exist when you take away from those who are willing to work and give to those who are not." Thomas Jefferson
GS,one procedure I've heard is spin the motor over at 1/2 throttle then hit the ignition. That's a good intake,but as Dave said it has had the puddling woes,I've seen several that have done that at the track.
Joe Ewing blew his off (in his trailer) last year. Said someone used too short of bolts. Did a number on his hood scoop but got it fixed in time too race.
Nitrous Express makes a nice pop off valve. It is around 50 bucks and worth every penny. If you have a backfire it opens and then closes back. Eliminates the problem. I will not bolt a 440-25 on without one now. We had it happen twice over the last couple of years deep in eliminations both times.
Did you account for all the bolts/nuts? You may want to get a boroscope and check the intake ports and inside the cylinders. Probably no debris but ya never know.
Pop Goes The Intake 
Linear Mode
