View Poll Results: Which Balance Shaft Do you run or plan on running?
OEM Mitsubishi Stubby Shaft
21
42.86%
AMS Race Shaft
2
4.08%
GSC Race Shaft
8
16.33%
Magnus Stubby Shaft
0
0%
Stock Balance Shaft
18
36.73%
Voters: 49. You may not vote on this poll
Evo Balance Shaft Thread
Thread Starter
Evolved Member
iTrader: (23)
Joined: Mar 2007
Posts: 1,515
Likes: 1
From: Madison, WI
Evo Balance Shaft Thread
Hey evom,
I wanted to create a poll of what everyone is using for a balance shaft in their builds. A centralized place to find good data.
Vote on the BSE that you run or are planning to use in your build.
If you've had any failures / successes let us know which BSE you ran.
I've read dozens of threads all over, not just evom, anywhere 4G63 related...so many mixed responses.
I've spoken to a handful of shops and they've all basically said the OEM stubby is the way to go...
hopefully we can get a good amount of data here for everyone to see.
I wanted to create a poll of what everyone is using for a balance shaft in their builds. A centralized place to find good data.
Vote on the BSE that you run or are planning to use in your build.
If you've had any failures / successes let us know which BSE you ran.
I've read dozens of threads all over, not just evom, anywhere 4G63 related...so many mixed responses.
I've spoken to a handful of shops and they've all basically said the OEM stubby is the way to go...
hopefully we can get a good amount of data here for everyone to see.
I'm a fan of the stock BS for around 8000ish or less. Proper oil/belt changes and they should be trouble free.
Some of the biggest issues when deleting them are excessive vibration,clutch issues and bolts backing out. For a street car that isn't turning really high rpm in seems like a good idea to keep them. Automobile manufactures do a lot of R&D before releasing something. The Japanese are no exception. You don't have to "upgrade" everything on the Evo, its pretty badass right out of the gate.
Jacks trans wrote a really good article on keeping them.
http://www.jackstransmissions.com/pa...balance-shafts
Fwiw I bought my car with 70K , did the 60K service with all the pulleys/tensioners/belts. Then proceeded to run it hard on road course days and runs for the next 24K. Never had an issue with them.
I'm also one of those guys that never runs a cold engine hard. I'd wait until the oil was at least 160* before hammering on it. I'd also run 20/50 Vr1 on track days to help with any oil pressure issues that could come up on sticky tires.
Some of the biggest issues when deleting them are excessive vibration,clutch issues and bolts backing out. For a street car that isn't turning really high rpm in seems like a good idea to keep them. Automobile manufactures do a lot of R&D before releasing something. The Japanese are no exception. You don't have to "upgrade" everything on the Evo, its pretty badass right out of the gate.
Jacks trans wrote a really good article on keeping them.
http://www.jackstransmissions.com/pa...balance-shafts
Fwiw I bought my car with 70K , did the 60K service with all the pulleys/tensioners/belts. Then proceeded to run it hard on road course days and runs for the next 24K. Never had an issue with them.
I'm also one of those guys that never runs a cold engine hard. I'd wait until the oil was at least 160* before hammering on it. I'd also run 20/50 Vr1 on track days to help with any oil pressure issues that could come up on sticky tires.
Originally Posted by Abacus
I'm a fan of the stock BS for around 8000ish or less. Proper oil/belt changes and they should be trouble free.
Some of the biggest issues when deleting them are excessive vibration,clutch issues and bolts backing out. For a street car that isn't turning really high rpm in seems like a good idea to keep them. Automobile manufactures do a lot of R&D before releasing something. The Japanese are no exception. You don't have to "upgrade" everything on the Evo, its pretty badass right out of the gate.
Jacks trans wrote a really good article on keeping them.
http://www.jackstransmissions.com/pa...balance-shafts
Fwiw I bought my car with 70K , did the 60K service with all the pulleys/tensioners/belts. Then proceeded to run it hard on road course days and runs for the next 24K. Never had an issue with them.
I'm also one of those guys that never runs a cold engine hard. I'd wait until the oil was at least 160* before hammering on it. I'd also run 20/50 Vr1 on track days to help with any oil pressure issues that could come up on sticky tires.
Some of the biggest issues when deleting them are excessive vibration,clutch issues and bolts backing out. For a street car that isn't turning really high rpm in seems like a good idea to keep them. Automobile manufactures do a lot of R&D before releasing something. The Japanese are no exception. You don't have to "upgrade" everything on the Evo, its pretty badass right out of the gate.
Jacks trans wrote a really good article on keeping them.
http://www.jackstransmissions.com/pa...balance-shafts
Fwiw I bought my car with 70K , did the 60K service with all the pulleys/tensioners/belts. Then proceeded to run it hard on road course days and runs for the next 24K. Never had an issue with them.
I'm also one of those guys that never runs a cold engine hard. I'd wait until the oil was at least 160* before hammering on it. I'd also run 20/50 Vr1 on track days to help with any oil pressure issues that could come up on sticky tires.
I bought my car in 2013 with 11k miles. I changed the belts at 20k when the harmonica balancer fell of the crank timing cog/pulley. Car now has 46k miles and I'm not easy on it. Still going strong.
I have a 2.3 that will be getting assembled soon. I have done everything in my power to minimize the risk of anything happening with the balance shafts since I am keeping them. I am running upgraded balance shaft bearings and both those bearings and the balance shafts are WPC treated. So if they ever decide to seize up, there wasn't much else I could have done 
i decided to leave the BS out when i got a new dealer oem short block last year. my car is mostly track car. one benefit of BS delete is higher oil pressure, which is important for long right hand turns.
i personally know two people who had BS belt broke and took out the timing belt. both did the 60k service. but they also track on the regularly. or maybe who ever did the 60k service didn't tighten the BS belt correctly.
i personally know two people who had BS belt broke and took out the timing belt. both did the 60k service. but they also track on the regularly. or maybe who ever did the 60k service didn't tighten the BS belt correctly.
Trending Topics
Waiting for oil temp to come up is a probably a huge deal one the bshafts and belt living. Having a good knock free tune is also important.
I bought my car in 2013 with 11k miles. I changed the belts at 20k when the harmonica balancer fell of the crank timing cog/pulley. Car now has 46k miles and I'm not easy on it. Still going strong.
I bought my car in 2013 with 11k miles. I changed the belts at 20k when the harmonica balancer fell of the crank timing cog/pulley. Car now has 46k miles and I'm not easy on it. Still going strong.
Newbie
Joined: Apr 2015
Posts: 9
Likes: 0
From: fresno ca
Well I did my bs delete last month! And I put a
Oil pressure gauge and I’m reading 8 psi on
Idle and at 3500rpm’s 52 psi and full trotle
Around 70 psi ! Is this normal? What pressure you guys
Running with balance shafts and without it ?
Any info on that ?
Oil pressure gauge and I’m reading 8 psi on
Idle and at 3500rpm’s 52 psi and full trotle
Around 70 psi ! Is this normal? What pressure you guys
Running with balance shafts and without it ?
Any info on that ?
I hear both sides of the story BS should remain or BS should be removed. Then those that say BS should stay say that the Mitsubishi Engineers designed the motor and BS etc... Well then I have two things that run through my mind regarding all this back and forward arguments.
1. If BS removal is bad why did Mitsubishi design a delete ? Isnt the “OEM Stubby” an OEM part ?
2. Is it true that that the JDM Evo’s dont have Balance Shafts ?
1. If BS removal is bad why did Mitsubishi design a delete ? Isnt the “OEM Stubby” an OEM part ?
2. Is it true that that the JDM Evo’s dont have Balance Shafts ?
Evolved Member
Joined: Jun 2006
Posts: 6,902
Likes: 151
From: Grand Island, NE
I was doing a timing belt job on my car last week and encountered a stuck crank bolt. I thought - people run without the b-belt, how bad can it be? Answer - I don't like it at all. This turns a sweet little engine into a very noisy machine. So, going back in to correct my mistake.