6-bolt 4g63 Crankshaft Chamfer & Oil Clearances
These are some things you need to think about during your build. Some
engines don't have any chamfer on oiled journals whatsoever. All equipment
like that can benefit from at least a light chamfer like the one that's on
a stock Mitsubishi crank shown in this video.
When you Chamfer an oil passage, you create a low-pressure zone where the
edges of the oil passage lift away from the bearing as it passes over it.
The principles of fluid dynamics dictate that if there wasn't an available
substance to displace that low pressure zone (in this scenario, there is an
oil supply), cavitation might occur. If we were talking about
aerodynamics, the effect would be lift.
An extremely-advanced or leading chamfer is actually capable of sucking oil
off of a flat bearing, whereas a trailing chamfer vacuums oil out of a
gallery and does a better job of spreading it around.
The modification that was performed here is intended to increase oil flow
to the mains and the rods. It's mentioned in the video that I'm setting up
my rod oil clearances on the looser side of spec. This will decrease block
oil pressure because more oil will be able to leak past the fillets of the
crankshaft and back to the pan.
But there's another modification being performed. A balance shaft
elimination. There will be lots of debate about this in the coming videos
as that transpires, but one of the side-affects of doing a BSE is increased
oil pressure. With several internal oil holes plugged off inside the
block, I will have a spike in oil pressure. I had my chamfers cut straight
in order to offer the largest practical surface area to apply oil to the
mains and rods. My intention is to relieve some of this oil flow that
doesn't have anywhere else to go. With the added flow, the straight
chamfer is actually beneficial to the mains, allowing them to intake more
oil as well as to spread more of it on the flats below the grooved upper
The animations illustrate this completely. They were created by
yours-truly. I know the oil hole on the mains is on the wrong side. It
was too much work to fix, but they get the point across. Don't laugh at
them any harder than I did.
Madness At Mt Smart
Recently Round 4 of the D1NZ Drift series was held at Aucklands Mt. Smart
Stadium. The event kicked off during the week with a Charity cruise through
the streets of Auckland organised by the guys at D1NZ for cancer patient
Daniel Baxter and his family.
After the fun filled day it was back down to business as drivers battled it
out for the top honors.
Calculate by Del Tha Funky Homosapien
Fig Leaf Bi Carbonate by MF Doom
Thanks to my man Dom Miles for the additional footage supplied!
Sexy Dayanis Garcia takes ride in a 900hp Evo IX
Music : Sadik Beatz -- Rock (Dubstep Beat)
During a photoshoot with Joel Antoine Photography we took a short break to
take Dayanis for a few pulls in the 900hp Evo IX. Enjoy!
2.2 liter stroker billet crank
Force Performance GT3794 HTA
Custom built transmission from TRE with an HKS 4:11 final drive
turbo4.com 4G63 Dragster goes 6.66 at 196!
The quickest 4G63 in the world just went quicker. I apologize for the
shaky video, the camera didn't want to auto-focus for our camera man. I
also included some GoPro footage of the same run with a great 4G63 engine
srt 4 vs dsm gsx
Heres a run of my srt vs our buddies dsm talon in a closed street with cam
phone, good vid but not so good sound. srt running 93 canned, with cai and
front mount, full 3'' turbo back and dsm
runing bfmic with full Exhaust and
hard pipping oh ya the most important factor.... its awd! more vids of 40
mph runs to come