This project was undertaken as the result of an unfortunate mishap. Although critics believe we got a little to silly on the N20, the damage you will see below was caused by a faulty fuel injector that filled one of the cylinders on start-up. Yes, it does happen as we confirmed by using the same set of injectors on the new motor and blowing a head gasket (those forged parts hold up very well).
This
is the old motor during disassembly. Although
it seems to be rather complicated, it seemed to be the easiest part of the
project. I think the idea of yanking
this pile of crap out and putting in a stroker was certainly a motivating
factor.
There
was major damage to bottom of one of the cylinders as a result of a broken rod.
Here is another
look of the same damage.
The
piston on the left suffered some scuffing to the bottom and its pretty obvious
what happened to the rod on the right.
Again, this was the result of hydraulic lock that occurred as a result
of a faulty injector. Keep in mind,
these were brand new 30lbs. Injectors from Summit Racing. We had no reason to believe there was a
problem. After the mishap, the
injectors were sent to RC Engineering for cleaning and calibration. They did not pick-up the problem and sent
them back to us. This tells you what
kind of a job they do. Trusting them,
we used them on the new motor and blew a head gasket three days later. Same fricken injector problem. We ordered another pair of the same Ford
Motorsport injectors and have not had any problems. ??????
More damage as a result of the broken
rod. The rod also punctured the bottom
of the block.
Here
is the new 2000-year block for the project.
The only preparation necessary was a slight hone that was handled by
Frank Peralez of Peralez Racing.
The
block was assembled with Lunati forged nitrous pistons, forged rods, and forged
stroker crank. All of these items were
ordered through Speed Center of Pharr, Texas.
They are a distributor for Agostino Racing Engines out of Canada. Doesn’t that look pretty???
Here
is a shot of the bottom. Spacers were
necessary on the oil deflector for clearance of the new stroker crank.
The
MTI stage II heads were not hurt and were reused on this motor. The port job is excellent, but the
intake valves seals were leaking.
We had ordered a B1 cam and instead got something larger. I guess we got lucky.
Here is Carlos Sr. getting some bloody knuckles.
Here is Jay,
watching Dad get bloody knuckles.
Here
is the finished product. An LS6 intake
was also put in place. Custom PCM programming
was done by Super Chips for the new power plant. Later additions were an SFI rated balancer and a second stage of
N20. The results were an 11.90 on
motor and a best of 10.66 at 133mph on 100 shot of N20 during the run and an
additional 150 shot after second gear.
PROBLEM: the heavy-duty rebuilt 4L60 is a pile of crap. We still have shifting problems. The solution: our 2004R tranny project.
Stay tuned.