4G63 FWD Mirage / Colt (Miguel Lopez's)
Here some videos of the progress of Miguel Lopez's car during this summer
(2011) car started runing 13's after the car was done put together and
finished the summer with a good pass of 11.8 @ 132 MPH
4g63 Mighty Max drag race, Kevin Jewer "World's Fastest 4g63 Mighty Max" 11.54 @ 122 mph - NEW Best*
Kevin Jewer finally got some traction and got a new best ET and MPH in his
4g63 Mighty Max. Always improving.
Current Best ET: 11.54
Current Best MPH: 122.85 (see compilation vid)
Now on the 50 trim turbo.
TCI competition TH350 trans
JM Fabrications RWD intake manifold.
Kevin: "Some other details, it weighs 3000 lbs with me in it. TCI
competition TH350 trans. Custom JMF intake and Exhaust manifolds Brent made for me. 2g ECMlink
V3 on speed density. Mid 80s Montero LSD in the stock rear axle. MT ET
Street radials. Pretty standard 2.3 liter eagle/ross motor. FP 4R cams. 45k
miles on the odometer."
New England Dragway
New England DSM
[FREE Thunder sound FX by: Final Cut King -
4G63 FWD Mirage 10.9 @ 135 mph
My car went 10.9 @ 135 mph on the 20th DSM/EVO shootout, Car is not fully
tuned, just fired up the engine 2 days before the shootout, not bad, 10.9
"breakin-in" the engine, thanks big thanks to Elvin Rivera and anybody that
helped out on this, JP, Elvin, Matt, Jose
you guys rock!
RWD 4G63T 1984 monte carlo SS Part1
PLEASE SUBSCRIBE, LIKE AND SHARE!!!!
This is the first of many videos that will be logging my good times as well
as the bad times during my build. Please subscribe and keep up with this
build. I will be pulling out all the stops this time.
RWD Eagle Talon at Pinks All Out Norwalk
My first pass in my Talon!
This is the first pass at an event that this car has made in it's current
form. For more information about it, check out http://www.eagletalon.net
This pass was made on June 7th At Summit Motortsports Park in Norwalk Ohio.
Blueprint 102 - Measuring 4g63 Crankshaft Endplay
4g63's are famous for hosing crankshaft thrust bearings. This video
illustrates the process of how to check the thrust bearing clearance
whether the motor's in the car or not. Of course in my case the motor's on
a stand for this video. Lucky for me!
In cases where the engine is still in the car, the same procedures can be
used so long as the indicator is attached to the engine block. The plunger
can be set up touching either the inside of the crank pulley or by removing
the clutch cover plate and contacting the flywheel.
What the thrust bearing does, is prevent the crankshaft from having lateral
movement in the main bearings. If a crankshaft develops excessive movement
here, clutch engagement and hydraulic problems will begin showing up,
followed shortly thereafter by catastrophic failure of main bearings, rod
bearings, connecting rod failures, oil pressure problems, or even broken
blocks, crankshafts and rods in extreme cases. It's important that every
4g63 turbo engine is within spec on this
When the crankshaft aggressively wears through the thrust bearing
developing lateral play, this is called "crankwalk". On some block
castings, replacing the bearings will NOT fix the problem. An engine block
that is prone to crankwalking can not be fixed. The only option in these
cases is to replace the shortblock and rotating assembly with new or used
parts that are stronger than the one you've unfortunately encountered. For
the 2g guys, the best option for repairing this problem is to remove the
7-bolt turbo shortblock your car came
with and replace it with a 6-bolt from a 89-92.5 production date turbo DSM. Non-turbo blocks CAN be used; however, the block will
not have oil squirters that aim towards the back of the pistons. That
stream of oil aides lubrication to the wrist pins, cylinder bores, and
somewhat cools the pistons. All good things on a turbo setup. Aside from that difference, there
are no other differences between the non-turbo and turbo
blocks. The pistons and thus the compression ratios are different, but
that's it. Oil squirters can be machined into the main galleries of a
non-turbo block, but it's more trouble
than it's worth unless you can't find a turbo block.
There are tons of differing theories about what causes crankwalk. Nearly
all of them are plausible and logical arguments. I will not get into those
debates in this video in order to focus on procedures for testing and
replacement. Please feel free to google "crankwalk 4g63" and read the
volumes of information available already. The arguments and gathered data
are older than the Eclipse itself and in abundant supply on the internets.
Magnus, RRE, VFAQ, and many other parts vendors have lengthy write-ups on
their own research and development. The bottom line is that the 6-bolt
shortblocks are LESS likely to suffer from this.
Next time you see someone with a video that looks like it was shot with a
potato asking "does this sound like crankwalk", you can send them this
video. There's a reason for every noise, rather than focus on the sound,
focus on eliminating the real problem. KNOW if it's out of spec.