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A Public Thank you to Greg Brown for the GT rods and the help!

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Old 03-20-2009, 05:16 PM
  #31  
blown 87
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Originally Posted by DR
For clarity sake, I fixed it for ya.
Thank you.

PS, I cant speel worth a crap either.
Old 03-20-2009, 05:25 PM
  #32  
belgiumbarry
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Originally Posted by blown 87
Barry, so you have had failures with 928 GT rods in a 944 that were the rods fault, not a toasted bearing that lead to a rod getting kicked out.

Just do we are on the same page here.
we are , no question about the wekest rods............

PS How many sets you do wanne buy ? .. we have them in hundreds for a realy cheap bargain...

look, i'm not give up my idea... those rods are junk !. No more. Hope Greg Brown chime in for a explication.

PS just hope we can post here our honest experience. if not.... Rennlist.
Old 03-20-2009, 05:34 PM
  #33  
GregBBRD
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This is how ugly rumors get started...I have a friend that says....

So, let me understand this line of thought: Porsche, for some reason, creates a custom, weaker rod for their higher rpm/higher output engines....while they still have the stronger rods on the shelf to put in the lower output engines? Does anyone out there think this is totally absurd, besides me? They contract with a company to build a weaker rod because they just want to spend more money, instead of using the stronger rod, they already have on the shelf?

Any rod that quits turning on the crankshaft is going to break...no matter who made it and what material it is made from. If the rod starts to stick and becomes hard to rotate on the crank, it is going to break, as the engine rotates...pretty much pure physics. I'd guess that this is the problem that the 944 guys had...since those engines destroy rod bearings at an incredible rate.

928 rods and 944 rods are dimensionally the same, except the 944 versions are wider on the "big" end.
Old 03-20-2009, 05:41 PM
  #34  
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Originally Posted by GregBBRD
This is how ugly rumors get started...I have a friend that says....

So, let me understand this line of thought: Porsche, for some reason, creates a custom, weaker rod for their higher rpm/higher output engines....while they still have the stronger rods on the shelf to put in the lower output engines? Does anyone out there think this is totally absurd, besides me? They contract with a company to build a weaker rod because they just want to spend more money, instead of using the stronger rod, they already have on the shelf?

Any rod that quits turning on the crankshaft is going to break...no matter who made it and what material it is made from. If the rod starts to stick and becomes hard to rotate on the crank, it is going to break, as the engine rotates...pretty much pure physics. I'd guess that this is the problem that the 944 guys had...since those engines destroy rod bearings at an incredible rate.

928 rods and 944 rods are dimensionally the same, except the 944 versions are wider on the "big" end.
reasaneble explication.. agree. But, what if there are stronger rods know??????
Old 03-20-2009, 05:45 PM
  #35  
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This is an extremely interesting topic, especially since I picked up 8 forged 601g rods from the post office today. I have so many questions and no answers.

(1) When we talk about strong rods, what do we mean? Ability to hold inertial loads or ability to hold power loads? Are we holding the piston weight constant and if so, what piston weight?

I am thinking, possibly incorrectly, that if the pistons are very light then a lighter and less sturdy rod has the advantage, whereas if the piston is heavy the heavier and sturdier rod has the advantage? Am I misguided?

(2) Has anybody ever actually broken an S4 or GT rod without something else breaking first?

Rod bearing failure will break a rod, I would second with my little knowledge. Piston breaking and seizing will break a rod. Hydrolocking will definitely break a rod. Dropping a valve will break a rod. Sure. But has anyone ever broken or bent an S4 or GT rod because of power or revs BEFORE anything else breaks first?

To an inexperienced layman like me, these are all nearly indestructable rods within the standard operating rpm ranges.
Old 03-20-2009, 05:51 PM
  #36  
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Originally Posted by belgiumbarry
we are , no question about the wekest rods............

PS How many sets you do wanne buy ? .. we have them in hundreds for a realy cheap bargain...

look, i'm not give up my idea... those rods are junk !. No more. Hope Greg Brown chime in for a explication.

PS just hope we can post here our honest experience. if not.... Rennlist.


I still not sure if you are kidding or not.

You have been asked by two people to back up your claim of them being the weakest rods Porsche ever made.

You say you have prof, well we would like to see it or hear about it.
Old 03-20-2009, 05:55 PM
  #37  
blown 87
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Originally Posted by ptuomov
This is an extremely interesting topic, especially since I picked up 8 forged 601g rods from the post office today. I have so many questions and no answers.

(1) When we talk about strong rods, what do we mean? Ability to hold inertial loads or ability to hold power loads? Are we holding the piston weight constant and if so, what piston weight?

I am thinking, possibly incorrectly, that if the pistons are very light then a lighter and less sturdy rod has the advantage, whereas if the piston is heavy the heavier and sturdier rod has the advantage? Am I misguided?

(2) Has anybody ever actually broken an S4 or GT rod without something else breaking first?

Rod bearing failure will break a rod, I would second with my little knowledge. Piston breaking and seizing will break a rod. Hydrolocking will definitely break a rod. Dropping a valve will break a rod. Sure. But has anyone ever broken or bent an S4 or GT rod because of power or revs BEFORE anything else breaks first?

To an inexperienced layman like me, these are all nearly indestructable rods within the standard operating rpm ranges.
I have dropped a few valve heads in my time, never broke a rod, damn sure did not do the piston, head or cylinders much good though.

I went through a ford 302 once, that the rod had broken (bent)with out any evidence of a bearing failure, but it was running a lot of N2o.
Old 03-20-2009, 05:59 PM
  #38  
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Originally Posted by blown 87
I have dropped a few valve heads in my time, never broke a rod, damn sure did not do the piston, head or cylinders much good though. I went through a ford 302 once, that the rod had broken (bent)with out any evidence of a bearing failure, but it was running a lot of N2o.
Not every dropped valve breaks a rod, but sometimes they do. I've read so on the internet! ;-)

I have been told that the SBC etc. rods are not nearly as strong as 928 rods. I have also been told that the journal diameter is larger with 928 and that 928 rods were the pride and joy of Porsche as the first production PPF rods that they totally overbuilt to be sure.
Old 03-20-2009, 06:02 PM
  #39  
belgiumbarry
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Originally Posted by blown 87


I still not sure if you are kidding or not.

You have been asked by two people to back up your claim of them being the weakest rods Porsche ever made.

You say you have prof, well we would like to see it or hear about it.
your signature doesn't afraid me Greg, just big talk. You wanne proof ? Whahahahaha, i don't gonne give it time. Did you ask proof to everybody cheering you up ??????? my god, such forum ignorence are so attemptive to follow by a noob... sorry again man, this is the way i feel.
Norbert
Old 03-20-2009, 06:03 PM
  #40  
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Originally Posted by ptuomov
Not every dropped valve breaks a rod, but sometimes they do. I've read so on the internet! ;-)

I have been told that the SBC etc. rods are not nearly as strong as 928 rods. I have also been told that the journal diameter is larger with 928 and that 928 rods were the pride and joy of Porsche as the first production PPF rods that they totally overbuilt to be sure.
Got to be true then!

I swear, I think at some point I have broken just about every thing you can break in a engine, I stay away from the blue bottles now.
Old 03-20-2009, 06:05 PM
  #41  
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Originally Posted by belgiumbarry
your signature doesn't afraid me Greg, just big talk. You wanne proof ? Whahahahaha, i don't gonne give it time. Did you ask proof to everybody cheering you up ??????? my god, such forum ignorence are so attemptive to follow by a noob... sorry again man, this is the way i feel.
Norbert
You did have me going, now I see it as what it is, just humor.
Were cool

PS, I would never try to make anyone afraid over the internet, not my style.
Old 03-20-2009, 06:11 PM
  #42  
belgiumbarry
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Originally Posted by blown 87
You did have me going, now I see it as what it is, just humor.
Were cool

PS, I would never try to make anyone afraid over the internet, not my style.
just so wrong interpretation my friend............rods are the bad choice !

i can give you a second opion on those weak rods from a wurthshipmember ever... ( sorry for spelling ) .... don't think i'm alone ....
please don't ask me details, this is MY opion. Norbert
Old 03-20-2009, 06:43 PM
  #43  
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WTF?

Old 03-20-2009, 07:04 PM
  #44  
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Norbert:

We just need more information. This is not a debate and no one needs to get angry. No one knows all, and we are all trying to learn. If these rods are indeed, Porsche junk, we just need to know. Perhaps you can get some details of what makes them weak and how they failed? That would help us all.

I have nothing technical that proves they are strong...I've never seen or had one fail. I just assumed that if Porsche made them for, and put them in, the higher performance engines, that they would be stronger. If wrong, that's OK...I've been wrong before....and so has Porsche!

See what you can find out and share it with us, please.

Everybody: Let's all be cool and get to the bottom of this...and see what we can learn. No emotion/opinions...let's be technical.

greg brown
Old 03-20-2009, 07:19 PM
  #45  
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Greg,

Well said.

One more idea to add to help add clarity to this discussion. It is a no-brainer to say there are stronger lighter faster aftermarket rods available, just as with everything. But, I for one would like to hear more about the specific 928 factory rods I thought we are/were discussing.
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