Welcome to www.JeepStrokers.com!!
Not yet a registered user? You are required to Register before you can post within this topic.

Heavy or light crankshaft for 4.5 build ?

Performance mods and Advanced Stroker discussion.
GoatBoy4570
Where's the "any" key?
Where's the "any" key?
Posts: 24
Joined: June 25th, 2016, 7:05 pm
Stroker Displacement: 4.2
Vehicle Year: 1983
Vehicle Make: AMC Jeep
Vehicle Model: CJ-7

Connecting rod material

Post by GoatBoy4570 » August 14th, 2020, 10:38 am

I did a search here and the internet "Connecting rod material" and found nothing about jeep rods, kind of a bummer that a Jeep Strokers form has nothing on this topic considering rods are a critical part of any stroker build ?

jsawduste
My keyboard is getting warn out
My keyboard is getting warn out
Posts: 1037
Joined: February 28th, 2008, 3:13 am
Stroker Displacement: 4.9
Location: Michigan

Re: Connecting rod material

Post by jsawduste » August 16th, 2020, 10:28 am

GoatBoy4570 wrote:
August 14th, 2020, 10:38 am
I did a search here and the internet "Connecting rod material" and found nothing about jeep rods, kind of a bummer that a Jeep Strokers form has nothing on this topic considering rods are a critical part of any stroker build ?
If you dig a bit deeper you`ll find several "Jeep" rods.

Scat makes a replacement

Russ has a rod of his design that he sells. Crankshafts also.

Eagle made an H beam rod that is actually longer than the factory 4.0 rod. My personal stroker has these.

Newcomer also has their propriety rod.

Each of these are a little different and unique to the specs dictated by the designer.

User avatar
Cheromaniac
Senior Member
Senior Member
Posts: 2963
Joined: March 8th, 2008, 12:58 pm
Stroker Displacement: 4563cc
Vehicle Year: 1992
Vehicle Make: Jeep
Vehicle Model: Cherokee
Location: Cyprus
Contact:

Re: Connecting rod material

Post by Cheromaniac » August 16th, 2020, 11:22 pm

GoatBoy4570 wrote:
August 14th, 2020, 10:38 am
I did a search here and the internet "Connecting rod material" and found nothing about jeep rods, kind of a bummer that a Jeep Strokers form has nothing on this topic considering rods are a critical part of any stroker build ?
Ι believe that the stock 4.0 & 4.2 rods are cast steel.

jsawduste
My keyboard is getting warn out
My keyboard is getting warn out
Posts: 1037
Joined: February 28th, 2008, 3:13 am
Stroker Displacement: 4.9
Location: Michigan

Re: Connecting rod material

Post by jsawduste » August 17th, 2020, 6:55 am

[/quote]Ι believe that the stock 4.0 & 4.2 rods are cast steel.
[/quote]

That they are Dino, along with the block, crank, head and many other components found in everyday life. I`d bet the block might be a different mix than say the connecting rods.

Like Baskin Robbins 31 flavors of ice cream. By adding or subtracting various ingredients (alloys) the properties of the cast can vary widely.

This link shows just a SMALL slice of cast and the numbers. There are plenty of "mixes" and we are not even getting into after cast functions like heat treating yet, Just the base material here.

https://en.wikipedia.org/wiki/Steel_cas ... berg1334-4

jsawduste
My keyboard is getting warn out
My keyboard is getting warn out
Posts: 1037
Joined: February 28th, 2008, 3:13 am
Stroker Displacement: 4.9
Location: Michigan

Re: Connecting rod material

Post by jsawduste » August 17th, 2020, 6:56 am

[/quote]Ι believe that the stock 4.0 & 4.2 rods are cast steel.
[/quote]

That they are Dino, along with many other components found in everyday life.

Like Baskin Robbins 31 flavors of ice cream. By adding or subtracting various ingredients (alloys) the properties of the cast can vary widely.

This link shows just a SMALL slice of cast and the numbers. There are plenty of "mixes" and we are not even getting into after cast functions like heat treating yet, Just the base material here.

https://en.wikipedia.org/wiki/Steel_cas ... berg1334-4

Pac8541
Posts: 1
Joined: July 6th, 2021, 5:27 pm
Vehicle Year: 1994
Vehicle Make: Jeep
Vehicle Model: YJ

Re: Heavy or light crankshaft for 4.5 build ?

Post by Pac8541 » July 19th, 2021, 4:58 pm

First post anywhere on this forum and I’ve been reading all kinds of threads here.

I find this conversation absolutely fascinating. Makes me want to go back to school just to understand.

Thank you. 🥃

GoatBoy4570
Where's the "any" key?
Where's the "any" key?
Posts: 24
Joined: June 25th, 2016, 7:05 pm
Stroker Displacement: 4.2
Vehicle Year: 1983
Vehicle Make: AMC Jeep
Vehicle Model: CJ-7

Re: Heavy or light crankshaft for 4.5 build ?

Post by GoatBoy4570 » July 19th, 2021, 10:42 pm

I'm glad your enjoying the thread, your right metallurgy is a fascinating topic what amazes me is what they already knew decades ago, today steel is so ubiquitous its just taken for granted. I never did find out what jeep rods are made of and i suppose no one here knows, i'm just gonna assume they are 8620 same as what many cranks are made from.

Post Reply

Who is online

Users browsing this forum: No registered users and 4 guests