ARP Rod Bolts upgrade
Thread Starter
10 Second Club
iTrader: (11)
Joined: Apr 2006
Posts: 2,526
Likes: 1
From: Ashland, KY
ARP Rod Bolts upgrade Hey guys. I hear everyone say that as far as RPMs go, the weak point on our cars is the rod bolts. So what all does it take to change rod bolts? Basically a rebuild? Or can you just swap the bolts without messing with the bearings, etc.?
You can change the bolts by just dropping the oil pan one bolt at a time , If you are looking for some bolts i have a slightly used set of ARP 2000 rod bolt for stock rods. They were in my motor for a bout a month, there in perfect shape and don't need to be stretched like a brand new set ,tork and retork three times to get the stretch out. ill take $50.00 for them pm me if you want them.
Do a search on rod bolts, but im pretty sure most people dont resize them. Katech doesnt say you have to with theirs, ARP just says that so they are covered if anything goes wrong.
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
FYI, Katech bolt (although a little more expensive) are a better choice for a on motor swap. Just remove ferrule and trq once to 50lbs and that is it. The design is a clone of stock but with higher tensile strength.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Originally Posted by PREDATOR-Z
FYI, Katech bolt (although a little more expensive) are a better choice for a on motor swap. Just remove ferrule and trq once to 50lbs and that is it. The design is a clone of stock but with higher tensile strength.
Also, are the ARP bolts stronger, like if you were wanting to spin to 7300 RPM lets say would the ARP's be the ones to go with or would the Katech's still be okay?
Thanks!
Thread Starter
10 Second Club
iTrader: (11)
Joined: Apr 2006
Posts: 2,526
Likes: 1
From: Ashland, KY
Originally Posted by Ted J
I'm curious, what's the difference between the Katech bolts and the ARP bolts in so far as you saying they are easier to install for an on motor swap? (cause you don't have to stretch them by torquing them down 3 times I assume?)
Also, are the ARP bolts stronger, like if you were wanting to spin to 7300 RPM lets say would the ARP's be the ones to go with or would the Katech's still be okay?
Thanks!
Also, are the ARP bolts stronger, like if you were wanting to spin to 7300 RPM lets say would the ARP's be the ones to go with or would the Katech's still be okay?
Thanks!
I'm sure the Katech's are of the same or better quality. Katech is a great company with great products. But the ARP's work fine and I've never heard of an ARP rod bolt failure.
Supposedly the ARP bolts are a different size than the stockers. So? If they're matching size to each other, that's all that matters. So I'd love to hear an explanation as to why that matters. I'm aware of the size issue. But what relevance is there in that and any failures? I've never heard of it mattering. It seems more like a marketing ploy than a realistic issue.
I mean, okay, I can kill a fly with a flyswatter (ARP), or with a shotgun (Katech). Is one better than the other for killing the fly? No. Bottom line, fly dies either way. Same for the bolts. Either way, the motor holds together and nobody has any failures from a broken ARP bolt.
Help me out, Predator-Z. Can you shed some light on what ACTUALLY matters in the difference in the bolts.
good questions N4cer
1st didn`t know it can be done while the motor is together.
2nd I also want to know if the other brand is the same strenth or can handle the 7400 RPM
but I`m leaning toward the stock size bolts (maybe it`s just me not wanting a rod that will stretch/widen the thread)
how much for a set? both of them?
I`m keeping an
here
1st didn`t know it can be done while the motor is together.
2nd I also want to know if the other brand is the same strenth or can handle the 7400 RPM
but I`m leaning toward the stock size bolts (maybe it`s just me not wanting a rod that will stretch/widen the thread)
how much for a set? both of them?
I`m keeping an
here Thread Starter
10 Second Club
iTrader: (11)
Joined: Apr 2006
Posts: 2,526
Likes: 1
From: Ashland, KY
I'm lost. What do you mean by "a rod that will stretch/widen the thread"? I don't know what that means. The bolts are the same diameter, so I'm not sure what you are saying will happen.
stretching them and getting the stretch out ....
and what you said : Supposedly the ARP bolts are a different size than the stockers.
so what I understood is that they`re a little bigger maybe? and they will stretch or widen the original thread of the rod bolts and you can`t use stock bolts again if you wanted ....
correct me if I`m wrong.
and what you said : Supposedly the ARP bolts are a different size than the stockers.
so what I understood is that they`re a little bigger maybe? and they will stretch or widen the original thread of the rod bolts and you can`t use stock bolts again if you wanted ....
correct me if I`m wrong.
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
The bolt head pattern is thicker/wider on ARPs and are capable of throwing the rods "out of round". I has been proven to do so. Which means this will cost you some bearing material upon running the motor.
Failure: No study has been made at the long run to determine such failures.
Kateck is specialy designed as a direct replacement, same design as stock with higher tensile strength. No effect on rods/bearings.
Bottom line, it is up to you, but for the price of a motor, I dished out the extra $$$.
Failure: No study has been made at the long run to determine such failures.
Kateck is specialy designed as a direct replacement, same design as stock with higher tensile strength. No effect on rods/bearings.
Bottom line, it is up to you, but for the price of a motor, I dished out the extra $$$.
Originally Posted by PREDATOR-Z
The bolt head pattern is thicker/wider on ARPs and are capable of throwing the rods "out of round". I has been proven to do so. Which means this will cost you some bearing material upon running the motor.
Failure: No study has been made at the long run to determine such failures.
Failure: No study has been made at the long run to determine such failures.
Also, are the ARP bolts the same mass as the stock ones? It sounds like maybe the Katech ones would be close if not similar but if the ARP's are a different size could they maybe be a different mass?
Thanks!
Its true that the katechs are both stronger and closer to the stock bolt dimensions and mass. However dont forget that the factory has a gram or two tolerance in mass between each of the 8 piston and rod assemblies anyway. Not to mention that many people have flycut their pistons and removed a few grams of material without detrimental effects. Im not saying that these things dont have any effect, but i feel it may be splitting hairs.
Originally Posted by GuitsBoy
Its true that the katechs are both stronger and closer to the stock bolt dimensions and mass. However dont forget that the factory has a gram or two tolerance in mass between each of the 8 piston and rod assemblies anyway. Not to mention that many people have flycut their pistons and removed a few grams of material without detrimental effects. Im not saying that these things dont have any effect, but i feel it may be splitting hairs.
If you are changing the mass of something spinning at 7K+ RPM 3.62 inches away from the center of that object I wondered if it would have a major effect on things. Not only that but I didn't know how much of a difference in mass there was between the katech and arp rod bolts and even to that of the stock rod bolts for that matter so that's why I mentioned it.
How much do the ARP rod bolts cost? It seems like the $153 the katech bolts, for me personally, seem like the best fit for I'd rather spend $153 on some rod bolts now then suffer the consequences of if one of the stock rod bolts give way or have bearing issues if I happen to have the "out of round" situation happen to me with the ARP rod bolts for with my luck it would probably happen with me for sure.