406-409 ci thread
Burning Brakes
Joined: Jul 2006
Posts: 1,080
Likes: 2
From: Pittsburgh PA
If you keep rpms down you may not need to worry, but if you want to make any power you'll need some rpms and dont want to be spinning an out of balance assembly up. you'll beat the bearings in few miles.
Le Mans Master
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
As I've written repeatedly, one of the big advantages in visitng many different Forums on a regular basis is being exposed to a LOT of feed-back on the same issues. With that in mind, in my visits to other Forums, I've repeatedly read responses from guys complaining about the "as delivered" balancing of the supposedly already balanced assemblies.
So, I'm totally in agreement with Pete K and others that even those that are "supposedly" balanced, should be re-balanced by a competent machinist.
In that regard, I highly recommend finding a shop that does, as its primary business, high performance/racing engines, NOT dealership warranty work. They're easy to find, just ask the fastest racers at the track or pick the brain of your local parts guy at, say, AutoZone, O'Reillyh's, Advance, NAPA. Many of them are racer's or, now that they're older, use to be racers and will KNOW where to take your parts (and where not to).
Put me down as being an strong advocate of re-balancing. That's what I'd do and as a perfect example is what I just did this past Wednesday. I practice what I preach, LOL.
Jake
So, I'm totally in agreement with Pete K and others that even those that are "supposedly" balanced, should be re-balanced by a competent machinist.
In that regard, I highly recommend finding a shop that does, as its primary business, high performance/racing engines, NOT dealership warranty work. They're easy to find, just ask the fastest racers at the track or pick the brain of your local parts guy at, say, AutoZone, O'Reillyh's, Advance, NAPA. Many of them are racer's or, now that they're older, use to be racers and will KNOW where to take your parts (and where not to).
Put me down as being an strong advocate of re-balancing. That's what I'd do and as a perfect example is what I just did this past Wednesday. I practice what I preach, LOL.
Jake
