After spending a month in bed healing some broken bones and road rash from a bad bike wreck I decided it was time to take my blown Cougar for a joy ride. My left hand was broken badly and in a cast so the turns were a bit sketchy but the straight line Roots blown power was getting my blood flowing again. I drove the car hard for well over 2 hours that day till she shutdown during a very strong WOT 1-2 stop sign pull.
I’ve blown up motors before so I know what the “clunk” rather then the "Click" means when you turn the key but all I have is a tiny little M90 ontop of a very well built motor underneath so what happened? I was able to get the car to the side of the road but with the broken hand I was not able to lift the hood till some guy stopped and gave me a hand (pardon the pun). He asked if I needed a jump I declined because I knew the motor was locked up but I did not see any holes in the side of the block or oil on the ground.
I was 3 miles from my house and still in bad shape from the wreck but I decided I needed the walk/Limp. Of course by the time I got back to the car with my buddy's tow truck on the way it was gone. The cops decide to impound the car because I was slightly in the road thus costing me an extra $200 to get it back.
After I started to recover some more I removed the motor (with one hand no less). After I got it on the stand and took the oil pan off I could see that all the Manley rods/CP pistons looked fine so I was relived to see them intact but I could turn the motor about 3 ¼ of a revolution. I thought it might be the oil pump gears, valve springs or even a busted head of a valve but with the broken hand I was unable to remove the heads to see inside the chambers so I packed it up and sent it out to my builder (Renegade Racing)
so he could go over it and give me the 411.
As it turns out a bolt had gotten sucked into the #8 chamber and locked the motor up at WOT. I felt like a total dumbass think that i dropped a bolt in there but how? There was no way in hell it would have gotten past the rotors of the roots blower. I had no idea where it could have came from till JL & KD pointed out that the air/water intercooler that is housed inside the blowers manifold is attached by 11 7mm bolts from hell (Now mine only has 10
). I don't know if it’s just my luck but these same
bolts are used in the same
configuration for all the lightning blowers so take that little bit of info for what it's worth. Personally, I have never heard one letting go but I now know why my Kenne Bell 4V blower has safety wire going through their internal bolts.
The damage is not as bad as it should be considering the situation but it’s not something I’d like to do again to a rather sweet setup so I will take care of those bolts with some safety wire. This way I can hit the gas again without the "She's going to blow!!
freak-out involved. The chamber took the hit in the Quench area but thank god it missed the oversized SS valves. It will require a blob of Alum and some hand forming but he's all over it. The CP piston took the hit like a champ and the ring lands and rings for that matter are fine. The real star of the show is the Manley rod that took a licking and kept its composure. If this was not such a well built motor the end result would not be pretty so kudos goes out to Jim At Renegade Racing
for building me a motor that eats bolts and stays alive to see another mod.
Man down. The #8 runner is right next to the missing bolts hole.
BFH (Bolt from hell)
The ghost of the BFH.
KB don't screw around.
He's your Daddy