Balance Shafts or No Balance Shafts
Dec 11, 2003, 02:15 PM
#16
Yes. I have heard of complete engine failures from using the shaft without the groove. It can wear, which will cause you to lose oil pressure.
Unfortunately, my engine has one in it. So I keep tabs on my oil pressure at all times.
Unfortunately, my engine has one in it. So I keep tabs on my oil pressure at all times.
Dec 11, 2003, 05:01 PM
#17
Newbie
Thread Starter
Join Date: Jun 2002
Location: Sydney, Australia
Posts: 3
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by DrMerl
I've seen threads on this before and I have to ask...if they are such power robbers and hamper oil pressure, WHY did Mitsu put them there in the first place?
Could those of you in the know that are going to such a "radical" (you're removing an integral part of the engine) procedure come forth and put in the PROs and CONs of this?
My monkey sense tells me that they are there to protect the engine for longevity's sake, things that spin more smoothly tend to stay spinning for a longer time.
I can see from Evo 4 that he's going pretty dramatic with forged goodies and I would assume he's having everything blue printed and balanced, including crank - is this procedure for track based (read - non daily driven) Evos?
I've seen threads on this before and I have to ask...if they are such power robbers and hamper oil pressure, WHY did Mitsu put them there in the first place?
Could those of you in the know that are going to such a "radical" (you're removing an integral part of the engine) procedure come forth and put in the PROs and CONs of this?
My monkey sense tells me that they are there to protect the engine for longevity's sake, things that spin more smoothly tend to stay spinning for a longer time.
I can see from Evo 4 that he's going pretty dramatic with forged goodies and I would assume he's having everything blue printed and balanced, including crank - is this procedure for track based (read - non daily driven) Evos?
My concern is with the vibrations. I have heard that with these removed there is a vibration at 4200 RPM and 7000 RPM. Vibrations can also cause further engine problems.
I would like to hear from anyone that has these removed on a Evo 4 or newer engine.
I am after a quick road / track car not trying to build an engine that lasts for 11 secs for the 1/4 mile.
Dec 11, 2003, 05:22 PM
#18
The engine will sound a little more buzzy. That is it. There is no harmful side-affect from removing the balance shafts. In fact, Mitsu sold some of these engines without balance shafts.
Dec 11, 2003, 06:35 PM
#19
Account Disabled
iTrader: (185)
Join Date: Mar 2002
Location: Long Island, New York
Posts: 2,565
Likes: 0
Received 0 Likes
on
0 Posts
Exactly as Josh stated. the factory balance shaft removal kit is very nice, and of course, fits perfectly.
I did this to my GVR4, and every DSM we have done a motor for gets it as well..nothing but upside.
The only purpose these serve from the factory is a bit smoother operating and a bit less noise....do a 3 inch exhaust on the car, and the noise issue becomes moot, and I personally have not noticed much more vibration post removal.
I did this to my GVR4, and every DSM we have done a motor for gets it as well..nothing but upside.
The only purpose these serve from the factory is a bit smoother operating and a bit less noise....do a 3 inch exhaust on the car, and the noise issue becomes moot, and I personally have not noticed much more vibration post removal.
Dec 12, 2003, 06:27 AM
#20
Originally posted by ShapeGSX
Yes. I have heard of complete engine failures from using the shaft without the groove. It can wear, which will cause you to lose oil pressure.
Unfortunately, my engine has one in it. So I keep tabs on my oil pressure at all times.
Yes. I have heard of complete engine failures from using the shaft without the groove. It can wear, which will cause you to lose oil pressure.
Unfortunately, my engine has one in it. So I keep tabs on my oil pressure at all times.
Dec 12, 2003, 11:57 AM
#23
Evolving Member
Join Date: Sep 2003
Posts: 369
Likes: 0
Received 0 Likes
on
0 Posts
I always do mine, and I have never actually noticed more vibration(on top of 3 inch catless exhaust). I also haven't actually noticed more power either. In fact, I ran back to back and didn't get any gains after doing it, My 1/4 miles were VERY similair with no blanace shafts being about 1/2 a mph faster, but I had also done some more weight reduction.
Its good to do, but NOT worth going out of your way to do it.
Its good to do, but NOT worth going out of your way to do it.
Thread
Thread Starter
Forum
Replies
Last Post
ReivaXVrai2
Evo Engine / Turbo / Drivetrain
75
Jan 21, 2017 07:28 PM
av00va
Evo Engine / Turbo / Drivetrain
13
Sep 1, 2013 07:26 AM
4doorbullit
Evo Engine / Turbo / Drivetrain
7
Mar 18, 2010 06:37 PM
Yamahar1
Evo Engine / Turbo / Drivetrain
4
Jul 11, 2009 02:38 PM
