Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

pulled pan on supposedly forged motor to find stock rods!

Thread Tools
 
Search this Thread
 
Old 08-16-2011, 10:44 AM
  #21  
9 Second Club
 
stevieturbo's Avatar
 
Join Date: Nov 2003
Location: Norn Iron
Posts: 13,616
Received 180 Likes on 155 Posts

Default

Originally Posted by slow67
Actually lots of torque can bend rods.
It can in extreme cases, but how many bent rods have you seen ?
Old 08-16-2011, 10:49 AM
  #22  
TECH Fanatic
iTrader: (6)
 
1320's Avatar
 
Join Date: Dec 2001
Location: LV NV
Posts: 1,114
Likes: 0
Received 0 Likes on 0 Posts

Default

Ive seen one in a stock 6.0 with turbo. It came on early too.....couldnt even see the bend, until you checked against a flat surface. It did make noise though.

Thats why cummins rods are bigger then fords and durmaxes too....lol

I saw a experiment on engine stress from an indy car team. It was very interesting, but the power and boost made only small changes in stress, while rpm goes up by the square and detonation breaks things.
Old 08-16-2011, 11:11 AM
  #23  
11 Second Club
Thread Starter
iTrader: (24)
 
TermnEatr's Avatar
 
Join Date: Aug 2009
Location: Amarillo, Tx
Posts: 637
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by Bob@BruteSpeed
$1000 to $1500 would be my best guess. Bob
Just called around and looks like ill be dropping 1200 or so which ia a good amount of money but atleast ill have the piece of mind knowing its all setup right and nothing else is jacked up inside.
Old 08-16-2011, 11:16 AM
  #24  
LS1Tech Sponsor
iTrader: (16)
 
Bob@BruteSpeed's Avatar
 
Join Date: Mar 2003
Location: Roanoke, IN
Posts: 21,006
Received 31 Likes on 26 Posts

Default

Originally Posted by TermnEatr
Just called around and looks like ill be dropping 1200 or so which ia a good amount of money but atleast ill have the piece of mind knowing its all setup right and nothing else is jacked up inside.
If it gives you piece of mind it is well worth it. Bob
__________________
ATI ProCharger and Moser Sales 260 672-2076

PM's disabled, please e-mail me
E-mail: brutespeed@gmail.comob@brutespeed.com

https://brutespeed.com/ Link to website


Old 08-16-2011, 11:33 AM
  #25  
TECH Veteran
iTrader: (14)
 
redbird555's Avatar
 
Join Date: Mar 2009
Location: Pompano Beach FL
Posts: 4,444
Likes: 0
Received 8 Likes on 8 Posts

Default

were the pistons supposed to be forged too? if so id make sure they are too, and if they werent supposed to be are you going to try to run 15lbs of boost on stock pistons?
Old 08-16-2011, 07:08 PM
  #26  
11 Second Club
Thread Starter
iTrader: (24)
 
TermnEatr's Avatar
 
Join Date: Aug 2009
Location: Amarillo, Tx
Posts: 637
Likes: 0
Received 0 Likes on 0 Posts

Default

Yes they where and they are
Old 08-16-2011, 07:34 PM
  #27  
TECH Addict
iTrader: (10)
 
FastKat's Avatar
 
Join Date: May 2005
Location: Pittsburgh, PA
Posts: 2,487
Received 2 Likes on 2 Posts

Default

Well yea, it is possible to build an engine that makes enough torque to bend the rods. Still, as stated below, rod loads ramp up very quickly as engine speed increases.... much more quickly than additional load caused by the engine producing more torque.

It's really too bad you can't replace the rods without removing the rotating assembly!

Originally Posted by 1320
I saw a experiment on engine stress from an indy car team. It was very interesting, but the power and boost made only small changes in stress, while rpm goes up by the square and detonation breaks things.
Old 08-16-2011, 08:32 PM
  #28  
10 Second Club
iTrader: (4)
 
BADD SS's Avatar
 
Join Date: Sep 2005
Location: Baldwin, NY
Posts: 1,103
Likes: 0
Received 1 Like on 1 Post

Default

6.0 rods are considerably stronger than ls1 rods.....

My Ls1 rods took 7800 rpm all day every day for quite some time, they never failed actually....

I dont think they are the weak link, stock pistons/rod bolts first...
Old 08-16-2011, 09:44 PM
  #29  
TECH Addict
iTrader: (10)
 
FastKat's Avatar
 
Join Date: May 2005
Location: Pittsburgh, PA
Posts: 2,487
Received 2 Likes on 2 Posts

Default

Several years ago I bought a built shortblock (forged rods & pistons, ARP main studs, etc) and I wish I would have kept the stock shortblock and spent the money on other things. If you have forged pistons, stronger 6.0 rods, and aftermarket rod bolts... think really hard about whether it's worth $1,200 to tear that all apart and put in better rods!

Originally Posted by TermnEatr
Just called around and looks like ill be dropping 1200 or so which ia a good amount of money but atleast ill have the piece of mind knowing its all setup right and nothing else is jacked up inside.
Old 08-16-2011, 09:57 PM
  #30  
11 Second Club
Thread Starter
iTrader: (24)
 
TermnEatr's Avatar
 
Join Date: Aug 2009
Location: Amarillo, Tx
Posts: 637
Likes: 0
Received 0 Likes on 0 Posts

Default

Well whats everyone elses thoughts on this in other words what would you do?
Spend the coin for the better rods?
Or throw it in and run the 15 psi?
Old 08-16-2011, 10:14 PM
  #31  
TECH Fanatic
iTrader: (6)
 
1320's Avatar
 
Join Date: Dec 2001
Location: LV NV
Posts: 1,114
Likes: 0
Received 0 Likes on 0 Posts

Default

I would run it. 15 psi isnt that bad. Ive been running a stock 5.3 with stock rod bolts at 18 psi for a couple years now at 6500 lbs. I wouldnt try to run it past 6500 though. Maybe 7000 if you had to for some reason every once in a while.

pulley it for 15 at 6000 and dont let it detonate
Old 08-17-2011, 12:14 AM
  #32  
TECH Enthusiast
iTrader: (5)
 
TurbopigB4C's Avatar
 
Join Date: Apr 2008
Location: Hemet
Posts: 663
Likes: 0
Received 0 Likes on 0 Posts
Default

Make sure you order the right size rods for the piston pins you have. Stock rods usually use a .945 piston pin and most forged rods and pistons use the smaller piston pins.
Old 08-17-2011, 03:56 AM
  #33  
Launching!
iTrader: (5)
 
yessir's Avatar
 
Join Date: Jul 2008
Posts: 283
Likes: 0
Received 0 Likes on 0 Posts

Default

check the pistons, if they are forged go for it. Im running 15 lbs on pump with a stock bottom end lq9.....down to the rod bolts
Old 08-17-2011, 05:48 AM
  #34  
10 Second Club
iTrader: (33)
 
skinnies's Avatar
 
Join Date: Jul 2004
Location: KS
Posts: 2,431
Likes: 0
Received 4 Likes on 4 Posts

Default

It could be possible he had a shop build the motor for him and he never knew it didn't have good rods in it. Sadly I've seen this happen before to people, they never take a look inside the shortblock so never know, just have a shop build them a complete motor. If it's already complete and you aren't doing anything else, you could leave it alone, I'm running 24lbs on stock rods(the better ones tho in my L33), but really if you have the rest of the parts, just drop the money now and don't worry about it. Nothing worse than having to do it twice!
Old 08-17-2011, 06:23 AM
  #35  
11 Second Club
Thread Starter
iTrader: (24)
 
TermnEatr's Avatar
 
Join Date: Aug 2009
Location: Amarillo, Tx
Posts: 637
Likes: 0
Received 0 Likes on 0 Posts

Default

The builder was his best friend and he wont answer any emails or pms .
But im gonna bite the billet and get the rods thanks for the input guys.
Old 08-17-2011, 08:49 AM
  #36  
TECH Senior Member
iTrader: (28)
 
studderin's Avatar
 
Join Date: Nov 2005
Location: Rochester, NY
Posts: 5,556
Likes: 0
Received 6 Likes on 6 Posts

Default

who is this? thats messed up
Old 08-17-2011, 09:32 AM
  #37  
FormerVendor
iTrader: (1)
 
Larry @ AMS's Avatar
 
Join Date: Mar 2011
Posts: 449
Likes: 0
Received 0 Likes on 0 Posts
Default

sorry to hear about this

I would leave the rods based off your mods and plans, but then again seeing that t doesn't have the parts it should you have to ask is the motor built properly?

I seen a car a few years back that was supposed to be a forged high comp. 346, ETP heads, Single Plane, etc ,but it made no power. The motor was pulled to be gone thre after checking, cam, springs, lifter preload , etc and when the heads were pulled we were shocked!

stock fly cut pistons
and then as you could imagine found it to be a complete stock short block
Old 08-17-2011, 09:42 AM
  #38  
TECH Resident
iTrader: (22)
 
02blackbeauty19's Avatar
 
Join Date: Oct 2006
Location: Shreveport, Louisiana
Posts: 910
Likes: 0
Received 0 Likes on 0 Posts
Default

Could you PM me who this is? Is it anyone in South Texas?
Old 08-17-2011, 10:50 AM
  #39  
11 Second Club
Thread Starter
iTrader: (24)
 
TermnEatr's Avatar
 
Join Date: Aug 2009
Location: Amarillo, Tx
Posts: 637
Likes: 0
Received 0 Likes on 0 Posts

Default

Im not going to name anyone as of now the guy never responded till today.
I truly apologize if the rods are not forged. I paid for a motor to be forged rods and pistons. I am very sorry that this happened. I have called my friend and several times and left messages with him. I think he is avoiding me because he knows about this. I don't think we will be friends anymore after this. Like I said I truly apologize for this. I got screwed in the beginning. I am a good guy and I'm not out to screw anyone over. I've always been honest up front and treated people as fairly as I could. Like I said I am truly sorry this happened. If I was in anyway able to afford to pay for this I would, but I can't afford it. I've recently got rid of my TA cause it was costing me money and paid off some bills. The economy sucks and I kno how hard it is to come across money. I am very sorry this happened.
Old 08-17-2011, 11:52 AM
  #40  
UNDER PRESSURE MOD
iTrader: (19)
 
The Alchemist's Avatar
 
Join Date: Nov 2001
Location: Doylestown PA
Posts: 10,813
Received 13 Likes on 10 Posts

Default

Originally Posted by TermnEatr
Im not going to name anyone as of now the guy never responded till today.
I truly apologize if the rods are not forged. I paid for a motor to be forged rods and pistons. I am very sorry that this happened. I have called my friend and several times and left messages with him. I think he is avoiding me because he knows about this. I don't think we will be friends anymore after this. Like I said I truly apologize for this. I got screwed in the beginning. I am a good guy and I'm not out to screw anyone over. I've always been honest up front and treated people as fairly as I could. Like I said I am truly sorry this happened. If I was in anyway able to afford to pay for this I would, but I can't afford it. I've recently got rid of my TA cause it was costing me money and paid off some bills. The economy sucks and I kno how hard it is to come across money. I am very sorry this happened.
So in other words, he admits that he screwed you over, after he was screwed, but is essentially saying tough luck.

That sucks.



All times are GMT -5. The time now is 07:42 AM.