Printable Version of Topic
Click here to view this topic in its original format
914World.com _ 914World Garage _ Need recommendation on rod small end bushings
Posted by: Superhawk996 Aug 30 2019, 08:57 AM
I ordered a couple sets of rod bushings from AA Performance but these seem to be rolled from flat stock with some sort of dovetail locking feature built into them. 
Originals already in the rods seems to be some sort of seamless brass. The AA Performance look to be maybe steel backing with babbit material overlay?
Wondering if anyone has experience with AA performance small end rod bushings? Checked AA and I think they are basically the same design (with dovetails).
I also see AA has KolbenSchmidt listed as well as Genuine Porsche but I cannot tell from either of those pictures on-line if they are seamless (I think I see seams) or basically same design as AA Performance.
I'm tempted to send off a set to my local machine shop and see how they look when finished, drilled, and honed. Not really concerned about the dovetails since there really is no way to have them come "unlocked" once the bushing is pressed into the rod but I hate to do this twice.
Recommendations?
@Mark_Henry
Posted by: dr914@autoatlanta.com Aug 30 2019, 09:06 AM
just buy the good german brand and have your machinist ream them
I ordered a couple sets of rod bushings from AA Performance but these seem to be rolled from flat stock with some sort of dovetail locking feature built into them.
Originals already in the rods seems to be some sort of seamless brass. The AA Performance look to be maybe steel backing with babbit material overlay?
Wondering if anyone has experience with AA performance small end rod bushings? Checked AA and I think they are basically the same design (with dovetails).
I also see AA has KolbenSchmidt listed as well as Genuine Porsche but I cannot tell from either of those pictures on-line if they are seamless (I think I see seams) or basically same design as AA Performance.
I'm tempted to send off a set to my local machine shop and see how they look when finished, drilled, and honed. Not really concerned about the dovetails since there really is no way to have them come "unlocked" once the bushing is pressed into the rod but I hate to do this twice.
Recommendations?
@Mark_Henry
Posted by: Superhawk996 Aug 30 2019, 09:17 AM
just buy the good german brand and have your machinist ream them
Hmm. .. .. are they brass or same steel with babbit overlay?
And you'll throw in a set of front turnsignal lens gaskets?
exact duplicates of the original front 914 turn signal seal that fits onto the turn signal body. Two free with a 25.00 order until sept 30 2019 just mention it in your order notes, 91463195710
@http://www.914world.com/bbs2/index.php?showuser=4947 @autoatlanta.com
Posted by: Mark Henry Aug 30 2019, 09:50 AM
When your machinist hones them to the correct pin size they will be bronze.
They're a bit under size ID, they have to be honed, the silver is just a babbitt coating.
Posted by: Superhawk996 Aug 30 2019, 09:56 AM
When your machinist hones them to the correct pin size they will be bronze.
Thank you Mark! I have to do two sets of rods so maybe I'll proceed with 1st set and then take a look and then decide on whether to order a set of KS bushings. I just didn't like the idea of it being soft babbit material over steel.
Doc, I'm not going to write off the KS bushings yet but I'm sure I'll find some other excuse to claim a set of gaskets.
Posted by: Mark Henry Aug 30 2019, 10:01 AM
The factory bushings have a seam as well, hard to see, ask for the old ones back and you'll see the seam.
Posted by: Superhawk996 Aug 30 2019, 01:11 PM
Rods and bushings dropped with my local machine shop. They didn't seem concerned and seconded the opinion that most have some sort of seam.
I usually only handle the finished product when final honed so this was the first time I've had to source the bushings.
Thank you for the advice. We'll see how the final product looks, measures, and fits, and then go from there. 
Powered by Invision Power Board (http://www.invisionboard.com)
© Invision Power Services (http://www.invisionpower.com)