01-12-2015, 07:19 PM #1
Flywheel bolt failure - now what? Rebuild her with MJ Performance professional help!!
Common story here on the Hulk with OEM flywheel bolt failure back in September. Was going to replace them with ARP's over the winter but, they gave out while running it hard. Lesson learned, do NOT procrastinate this very important upgrade! It costs a significant amount to repair the damage.
Mike Barajas at MJ Performance has been a real pleasure to work with and clearly knows his shit about this engine. Contact him at http://mjperformance.net.
I decided to really beef this engine up and do it right. I purchased over $2500 of OEM replacement parts that the flywheel bolt failure trashed and needed parts to do the job. Next I built a badass crate and frame to transport the engine from Texas to Florida and back. The extra "needed" parts included CP Pistons, Carrillo Rods, Colt Cam, ARP head studs & flywheel bolts, SC rebuild kit, oil pump parts, new chain and Rotax Racing tensioner, gaskets, etc, etc.
I had Mike perform the following surgery on my engine:
Complete head work to include Inconell valves, valve job, Rev springs, titanium retainers, new bronze valve guides, port & polish head, surface & deck head, knife edge & lighten & balance the crank shaft, install deck bridge, lighten and balance flywheel, re-assemble the engine and pressurize the oil system, degree the cam, and blue print the engine.
Mike will tell you "he is slow, he is not cheap, and very good at what he does". He included 447 pictures of the entire process from start to finish on a flash drive.
Here is some engine porn.
Last edited by jpt7779; 03-24-2015 at 11:38 AM.
01-12-2015, 07:21 PM #2
jeeze. I don't remember the block brace having all those holes in it?
01-12-2015, 07:22 PM #3
01-12-2015, 07:25 PM #4
Some Blue print specifications
all dimensions are American inch
cylinder piston to wall clearance .004
piston to head clearance .046
rod bearing clearance .0015
main bearing clearance .0015
cam timing measured @ .050
intake opens 2 atdc closes 40 abdc .395/222 109 lobe center .150 valve to piston
exhaust opens 50 bbdc closes 5 btdc .398/235 112.5 lobe center.125 valve to piston
valve spring pressure 110 lb closed 220 open @ .400 lift .080 to coil bind
01-12-2015, 07:26 PM #5
01-12-2015, 07:50 PM #6
01-12-2015, 08:51 PM #7
How in the world did he get .0015 clearance on the mains?
01-12-2015, 09:00 PM #8
- Join Date
- Sep 2010
- South Florida
WTF! I don't have 447 pictures in my entire porn collection. Nice Build!!! Now lets put a Turbo on it.
01-12-2015, 09:04 PM #9
01-12-2015, 09:07 PM #10
Mike does great work,& just happens to be about 5 mins away from where I work everyday
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