Ok, so there have been hundreds of posts about putting LS rods in a D-series for increased strength in the bottem end. In every one of these posts that I've found, this has been described as being accomplished be bushing the small end of the rod to accept the smaller 19mm D-series pin, however, you have to use a lock style, floating pin configuration.

That being said... I bought some aftermarket pistons for my hi-compression nitrous build that are simply Honda's P29 mold, but in a much stronger material. My original intention was to use Eagle rods on these pistons, but being that these pistons are OEM P29 style, they are press fit pistons instead of the locking pin style required to use the eagle rods. (Which I am now reselling here - (https://honda-tech.com/zerothread?id=1398508.)

So now I am limited to using only rods that are not lock pin style... which equals OEM rods. I don't want to use D-series rods because they scare me, and I cant do the bushed LS rod trick, because that leaves me in the same predicament as the Eagles (requiring the floating pin style piston). But I still want to find a way to use the LS rods...

So my question is this... Instead of bushing the small end of the LS rods to accept 19mm D-Series pins, could I instead have the pin hole in the piston bored out to accept 21mm B-Series pins?

Thanks in advance.

 

No, boring out a piston is not an option. You could just get the LS's re-bushed and then press fit them with the stock pistons. I am going to be doing something similar to this on a turbo motor.

 

Yeah, I realized right after I posted that this would not work...

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nonvtecD &raquo;</TD></TR><TR><TD CLASS="quote">No, boring out a piston is not an option. You could just get the LS's re-bushed and then press fit them with the stock pistons. I am going to be doing something similar to this on a turbo motor. </TD></TR></TABLE>

I was told that if you get the LS's rebushed then you had to use a floating style pin, not a press fit style.

Hmmm... could someone confirm this?

I'm not trying to contradict you, I'm just trying to get to the bottom of this. I've sifted through the archives and cannot find a certain answer. It's hard since you can't search "LS".

 

You could have the LS rods bushed with a steel bushing.Or even have the Eagle rods bushed with steel (have the bronze bushings pressed out and replaced with the correct size bushing in steel).Either one can be used as a press fit rod.One other option is a Teflon button as was used for years in domestic drag engines and we still use in our big inch v twin engines.
Glenn

 

Wow, good info.

I was not aware that the bushings could be swapped.

Thanks.

Anyone else?

 

Ok, if I was going to put steel bushings in my Eagle rods, where would I find the bushings? Will the machine shop have them or will I have to provide them? I looked on the Eagle site and couldn't find any info, and I tried to go to the "Contact" tab to ask them and it said "Site under construction".

Has any one else done this, and if so where and how did you find the bushings that I will need?

Thanks.

 

Some automotive machine shops can make them and them some can't.Any regular machine shop could make them.I have done this many times over the years.You want .0015" to .0020' press fit for the bushing in the rod and the same for the bushing to the pin.
Glenn

 

Find a machine shop that will make/get them for you, thats the best way to do it IMO

 

Well, I went to three different automotive machine shops today, and all three told me that what I'm trying to do is not possible. I told them about removing the bushing in the rod and putting a new one to fit the press style pin, and all of the places said that it couldn't be done...

I'm getting really frustrated...

 

I just had an idea, and I'm thinking that maybe it's kind of dumb, but I'm just gonna throw it out there just for the hell of it...

Since I'm planning on getting my pistons mated to these Eagle rods and never taking them off again until my **** blows anyways, why not just use the bushing thats already on the rod and instead of using a lock to keep the pin in place on the pistons, why not just weld the pin in place in the piston? It would be the same thing as using a lock right? Except it would be permanent. I know this would ruin the piston and I would never be able to take it off the rod without destoying it, but I never plan on taking it off anyways...

Is this a really bad idea?

 

Welding would reduce the integrity of the piston, wouldn't do it. There has to be a way to do this.

 

Yeah, I figured...

 

I would say in your case your best bet might be to just trade the LS rods to someone for some PG7/D16a1/ZC rods. They're thicker and stronger than all other D's and would press right onto stock pistons.

 

Yeah, I've been looking into some 86-87 Teg PG6b rods, but those damn things are hard to find.

Plus I haven't been able to confirm that they are actually stronger than other d-series rods. I've searched for hours upon hous and all I get is contradicting threads. I've never even seen a picture of these rods...

I guess if anybody reads this and happens to have a set for sale, tell me, and I will definitely scoop them up.

 

while the early 86-87 rods are thicker, they are not stronger, weaker metal used.

 

Yeah that's what I thought...

I'm probably just going to end up using some rods out of a spare sohc d-series block I've got.

If I use the toothpick d-series rods, will shot peening be worth my time?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by I am Jack’s Username &raquo;</TD></TR><TR><TD CLASS="quote">Well, I went to three different automotive machine shops today, and all three told me that what I'm trying to do is not possible. I told them about removing the bushing in the rod and putting a new one to fit the press style pin, and all of the places said that it couldn't be done...

I'm getting really frustrated... </TD></TR></TABLE>

You have got to be kidding.I guess some shops just want to surface flywheels and heads.I've got a lot on my plate right now but if you want to go this route and can't find someone local,PM me.Anyone with a lathe and a Brideport can do this even if they have never seen a connecting rod before.
Glenn

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NJIN BUILDR &raquo;</TD></TR><TR><TD CLASS="quote">You have got to be kidding.I guess some shops just want to surface flywheels and heads.</TD></TR></TABLE>

You have no idea...

Around here, if it ain't got no eight pistons, it ain't worth workin' on the sum'bitch...

******* hillbillies....

 

To hell with it, I'm just going to sell some stuff to get money for some 10.5:1 SRPs...