I have read about how strong ls rods are and that they can be used in D-series engines. I would like to buy a set, where can I find them. Also, what machine work and pistons are required. Thanks!

 

you have to search for these. D16 and LS rods are the same length(5.394"), but the LS's are stronger. They should fit no problem, just order new bearings.

 

over on d-series.org some one said that you have to have something machined on pin because its differnt, im not sure though

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SOHCHonda.com Website &raquo;</TD></TR><TR><TD CLASS="quote">The crank ends of the LS rods and D series are same size around at 1.890" (48mm). The crank end bore width needs to be milled to match the D16 crank rod journals. Shave .022" off each side of the crank end of the rod.
The piston end bore needs to be bushed to match the D16 piston's smaller pin size. The pin on the LS pistons is 0.826" (21mm), the pin on the D16 pistons is 0.748" (19mm). You need the custom made aluminum-bronze bushing with a width of 0.786, ID. 0.748, OD. 0.827 +(over) three thousands due to the bushing will be pressed in the small-end of the LS rods, so the bushing won't come out of the hole. Crower sells these for around $40 a set.

taken from http://www.knology.net/~jediklc/pistonnotes.htm
</TD></TR></TABLE>

Here is another link with some info
http://www.sohchonda.com/ipw-w...=5674

 

by the time u have the ls rods setup for your d-series you will spend close to what it will cost for a set of aftermarket rods. just save a bit more and get some eagles. also depending on what your doing the d-series rod's might be more than adequate.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slammed_93_hatch &raquo;</TD></TR><TR><TD CLASS="quote">over on d-series.org some one said that you have to have something machined on pin because its differnt, im not sure though</TD></TR></TABLE>

good point, I didnt think of that! I know the b-series pin diameter is 21mm.

 

all this info excludes the point that the rods are prepared for a floating pin piston design, so an aftermarket piston is needed.
stan

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Stan D &raquo;</TD></TR><TR><TD CLASS="quote">all this info excludes the point that <U>the rods are prepared for a floating pin piston design</U>, so an aftermarket piston is needed.
stan</TD></TR></TABLE>

OEM LS = no
Aftermarket LS = yes

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Stan D &raquo;</TD></TR><TR><TD CLASS="quote">all this info excludes the point that the rods are prepared for a floating pin piston design, so an aftermarket piston is needed.
stan</TD></TR></TABLE>

Since when did LS Pistons use floating pins????

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hybrid_vtec &raquo;</TD></TR><TR><TD CLASS="quote">Since when did LS Pistons use floating pins???? </TD></TR></TABLE>
what are you both talking about? this is about using LS rods in a D series, the ONLY way to use the LS rods is to rebush them on the small end, which leads to using ONLY floating pins on the pistons,
who said anything about using LS pistons? aftermarket LS rods? comprehension skillz yo
stan

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Stan D &raquo;</TD></TR><TR><TD CLASS="quote">
what are you both talking about? this is about using LS rods in a D series, the ONLY way to use the LS rods is to rebush them on the small end, which leads to using ONLY floating pins on the pistons,
who said anything about using LS pistons? aftermarket LS rods? comprehension skillz yo
stan</TD></TR></TABLE>

My bad I have never put d-series pistons on LS rods before, but you can put CTR pistons on LS rods by just shaving the small end 1mm.

 

ctr's on ls rods

but with the ls on d-seires... all u need to do is mill the ls rods 5mm i believe if i rember coreclty but what bearinsg would u use


Modified by v-6 hatch at 2:22 PM 3/9/2005

 

we've done a few of these. the big end requires narrowing (as someone already pointed out)...use ls bearings. they are a little wider, but the chamfer clears the crank radius no problem.

we always use custom pistons with the larger pin, but i've played with the idea of using steel bushings with a couple tig stitches to secure them and then a press-fit pin would be okay.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RMS &raquo;</TD></TR><TR><TD CLASS="quote">
we always use custom pistons with the larger pin, but i've played with the idea of using steel bushings with a couple tig stitches to secure them and then a press-fit pin would be okay.</TD></TR></TABLE>
now that sounds like a pretty interesting idea,
perhaps when i put a rod through my block at 9K with my stock rods i will talk to you guys.
stan

 

9krpm on a street single cam? you're badass.

i'm refering to 240-260whp setups that never see over 7800rpm... budget turbo builds.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RMS &raquo;</TD></TR><TR><TD CLASS="quote">9krpm on a street single cam? you're badass.

i'm refering to 240-260whp setups that never see over 7800rpm... budget turbo builds.</TD></TR></TABLE>
not quite a street engine, but sigle cam nevertheless.
stan

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Stan D &raquo;</TD></TR><TR><TD CLASS="quote">
not quite a street engine, but sigle cam nevertheless.
stan</TD></TR></TABLE> i'm thinking about building a race sohc with .5 over pm7 pistons

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Stan D &raquo;</TD></TR><TR><TD CLASS="quote">all this info excludes the point that the rods are prepared for a floating pin piston design, so an aftermarket piston is needed.
stan</TD></TR></TABLE>

You can bush the LS rod with steel bushing for a tight press fit and then still use the stock D series pins, no floaters needed.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SMSP &raquo;</TD></TR><TR><TD CLASS="quote">You can bush the LS rod with steel bushing for a tight press fit and then still use the stock D series pins, no floaters needed.</TD></TR></TABLE>
what are the costs we are talking about here?
stan

 

I just reem out the d series piston to accommodate the b series pin. Ive done it many times with no problems. The width of the Ls rod is larger on the big end than the sohc (i cant remember the exact number). A machine shop can can mill it down to the sohc spec's for a perfect fit. Just remember to weigh everything after the machine work to make sure its not all over the place.