6 bolt 4g63 in 2g Eclipse GSX cylinder head removed in under 10 mins
Removing the head of a 4G63 in 10x speed.
The project got delayed a few months. After finishing it and cranking it
over, Interference in the cylinder was discovered. Shamefully, I admit my
mistakes were: 1) Not putting the spark plugs in immediately after
installing the head. 2) The bad habit of using my Valve Cover as a parts
tray and 3) Putting off the project too long, so I didn't recognize a
missing bolt from a custom fabrication.
The head needed new valve seats, valves and some welding. Wiseco and the
machinist both thought I'd be OK running the piston after smoothing out hot
spots, but I ordered a new piston not wanting to risk the deep gouge in it
with the high Boost I plan to run.
Peace of mind is priceless.
The danger in being over confident is sometimes you skip triple checking
stuff. I've built that engine at least 5 times and got careless.
You can see the port work I did on the head @
http://www.southernutahautos.com under "Tech Tips" and "Beyond Bolt-ons"
'89 Colt GT AWD 4G63-powered
Originally built by M+S recycling, using a 1g Eclipse AWD drivetrain and
powertrain. Sorry for the crappy filming, I was battling some pretty
4G63 Dragster - First Track Day
Atco Raceway - 4/18/09
First day at the track with our 4G63 Dragster project. The converter is
too tight to build Boost on the line
at the moment but we're working on it!
4g63 Coil On Plug 201
This is a continuation from my earlier coil-on-plug how-to video. I was
troubleshooting an ignition problem where I couldn't Boost over 14 PSI without misfiring or
backfiring despite having an ignition amplifier, and this is what worked to
completely resolve my troubles.
There's lots of information about what parts work well on a 4g63 (and their
relevance) as well as lots of reports about people having ignition problems
once they're installed. I noticed that there's not really any instruction
available regarding ideal methods for trimming the longer Chrysler boot
down to the size and shape for a 4g63 setup. Some of this could be due to
the depth of various COP mounting plates, but this video is intended as an
effort to help fill that void regardless of why.
If the boots are not trimmed properly, then as combustion chamber pressure
increases, the possibility of the spark arcing from the plug into the plug
well is possible. This can happen on improperly insulated plugs, or as a
result of an old worn boot. The solution if your coil resistance is
good... is to run down to NAPA and buy yourself a set of new boots. They
come with new springs. They just need to fully-sleeve the spark plug's
ceramic insulator, and make good electrical contact internally. If air can
get in and out, so can spark.
FYI: When inspecting older worn-out boots, wherever spark leaks through
leaves a white spot.
4g63 turbo colt
i took a stock dodge colt and swap it out with a 4g63t motor......4G63 2.0
Why so SIRIUS? Kia 4g64?
This video assumes you're aware that various iterations of the 4g series
Mitsubishi engines are designated as Sirius I & II.
For detailed information about which engines qualify as which, visit:
There's also this at EvolutionM:
Good luck finding info about this using Hyundai and Kia in searches.
Wikipedia doesn't have any info about it grouped with the Sonatas either.
There is no question what this is, well illustrated in this video.
I apologize for the length of this video, but a lot of ground is covered in
a short time. Hopefully there's some information in here you may someday
use. I'm just trying to expose it because there doesn't seem to be any
real information floating around in the forums about this yet.
The car is a first-generation 1999-2005 Kia Optima sedan. It has the EVO
equivalent of a 4g64 2.4L. Before using any of these parts, do your
research, cross-reference your parts and know what you're getting into.
Using parts from this rotating assembly in a 2g Eclipse will require
aftermarket rods and/or custom pistons. This is information for those who
wish to frankenstein their builds, or save a buck... whichever.... either
one of those requires skill.
Cylinder Head 108 - 4g63 Rockers
Cleaning and inspection of 4g63 rocker arms. Part 8 of the head series,
and probably the easiest one yet to either watch or perform. No precision
measurements required, no disassembly or special tools required. If you've
got an air compressor and a pick, and a little bit of patience, you can do
this part of the job without expending any major effort.
This is one of those things that during the course of your build, you can
do unconsciously. You just need to soak them, poke them, and inspect them.
In this video I show you how.
Some parts of the wheel Mitsubishi didn't want to re-invent each time they
developed a new motor. These rocker arms are prevalent in millions of
Mitsubishi, Plymouth, Chrysler, Dodge, Eagle, Hyundai and even some Kia
engines. A good rule of thumb is... everything with a 4g6x DOHC or 6g72
and 6g74 engine uses these rocker arms. From 4x4's to economy cars, these
parts are everywhere. You just need to know what cars they're in and you
can harvest a full set for a fraction of the cost of one of these things
new. If you watch this video, you'll see how to pick a winner.
Check this link for 6g7x donor cars.
I didn't really want to see any of my rockers damaged, but really I'm lucky
some were because it gave me an opportunity to show you some bad ones.
Mine suffered from oil starvation caused by rod bearing failures. That
loss of oil pressure in addition to oil passages being blocked quickly took
a toll. Just 5000 miles earlier I changed to 3g lifters and they were all
fine, so this happened quickly. HKS 264/272 cams didn't help anything once
the oil supply was compromised, but this was discovered before a more
expensive failure in the valvetrain could develop.
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