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YOUR RESEARCHWhat are the benefits of using ARP rod bolts in a rebuild?
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Replace cylinder sleeves since they were damaged
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I already changed my Cylinder sleeves since they were damaged from spinning the bearing but they are not Nickies.
What are the benefits of using ARP rod bolts in a rebuild?
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I used ARP bolts for the rods and bearing carrier casing.
What are the benefits of using ARP rod bolts in a rebuild?
Use arp never an issue
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968 had 24 Psi boost only used ARP never an issue on head gasket and 650 hp out of 4 cyl
What are the benefits of using ARP rod bolts in a rebuild?
Use arp rod bolts & head bolts
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I am a cheapskate.When I rebuilt my M96 I used ARP rod bolts & head bolts.
What are the benefits of using ARP rod bolts in a rebuild?
Use iron coatings
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What are the benefits of using ARP rod bolts in a rebuild?
Inspect cracks, do not
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Suggestion
Whatever you do, balance to perfection and inspect for cracks, do NOT change the rings unless damaged and put them back exactly how they came out,pin them,do the ovality measurements to 1/10th of one thou".
What are the benefits of using ARP rod bolts in a rebuild?
Repair liner too, just get your machine shop
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Suggestion
, a lot cheaper than nickies, I'm not saying they are as good but might be an alternative for someone with limits on budget, they do a d chunk repair liner too, just get your machine shop to fit
What are the benefits of using ARP rod bolts in a rebuild?
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Hello,
As many have read here I'm in the process of rebuilding my engine thanks to a mistake at the track where I spun a rod bearing. I've read that it's a benefit to use ARP rod bolts on the rebuild but my mechanic said that it's not necessary and the stock ones are fine. What are the benefits of using ARP rod bolts?
I'm trying to do all the recommended upgrades for the "street motor".
Not sure about m96 application but some engines have a multi-step rod bolt TTY torquing process, which ARP rod bolts let you forego. Really nice when you're working on your back under the car. And they're reusable, so double bonus.
Stock ones are part of the problem. They aren't as strong as ARP and aren't reusable. I certainly wouldnt use stock OEM ones.
I used ARP bolts for the rods and bearing carrier casing. I used Porsche OE for the head bolts.
FWIW, rod bolt failures were the root cause of the 991 GT3 "car-B-Qs". They are highly stressed parts, and not a place I'd opt for less than the best. When I had my motor pre-emptively redone, ARP rod bolts went in.
Let's be clear,you can not reuse the old OEM bolts. So the issue is:
1.the incremental cost of the ARP bolts
2.the probability of & cost of failure with OEM bolts.
If 1. is the issue ,buy generic 10.9 bolts. Or buy a Kia instead of the Pcar.
2. Rod bolt failure is a well documented issue ( Jake & Wayne for example). The consequence of failure is at least a total rebuild,maybe an entire replacement engine.
I am a cheapskate.When I rebuilt my M96 I used ARP rod bolts & head bolts. I did not upgrade the rods because I will not Track it. But if you plan to, ,upgraded rods are wise. Whatever you do, balance to perfection and inspect for cracks, do NOT change the rings unless damaged and put them back exactly how they came out,pin them,do the ovality measurements to 1/10th of one thou".
These are not my ideas, I am not an expert, I just listen to those who have proved they are.Good Luck with your rebuild !
Well, I can get ARP Rod bolts at a good price. Probably will be buying them. Might as well since I will track my car around 5 times a year. I found that Add online somewhere. Its a good guide.
I already changed my Cylinder sleeves since they were damaged from spinning the bearing but they are not Nickies. The Race shop did them and are also coated with Nicasil or the same coating they use on the Nascar cars they build.
The smart guys use Poly Dyn
http://www.polydyn.com/bearings
plenty of others
but what about the piston skirt? The old ones used iron coatings which are NA.
So he has nickies cylinders as nickies are a universal slang term for nikasil cylinders used in many ,many applications, none of which has anything to do with LN. I can't help it if people are close minded
Its a race shop in Mexico City that builds all the race cars for the Telcel teams. They don't do work for the general public and only work on motors for race cars or friends of the owner which is my case. He's a friend of a friend and he resleeved my engine and modified my heads a bit for higher compression. They have all the best equipment available. They are funded by Carlos Slim to work and build all his race cars for his teams.
Thank you for your intervention. Groan!
But for those like me who are ignorant but like to learn ,here is a link to clarify the technical differences between Nickies and the generics. In fairness, I note the OP was clearly aware of this and said so.Others.....not so much.
http://lnengineering.com/resources/2...ehind-nickies/
If there is no difference between the item using the TM "Nickies" and generics, we would like to know the technical explanation. This is a very technical issue and precise use of technical words and Trade Marks matters.Without that the discussion becomes misleading at best.
Hartech is another interesting source.
https://www.hartech.org/cylinder-liners
Then there are the iron/steel sleeved options - see AutoFarm for more.
I hope fellow Forum members find the links useful and interesting.
I do not know enough to endorse any product here ! But iron sleeves are used in Pcars in U.K. but seem to have a rather contentious reputation. See Hartech for more. Baz has many pages on that.In the USA there is a place in Louisiana that does them but I am not going to even mention them by name ! 'Nuff said? YEMV - but let's see the comparative data fist?
I wasn't suggesting you were in charge of the "approved" list of sleeve materials/coatings, nor that you were one of the parties involved with beating Martin up about them. Sorry if it came across otherwise.
Now that you have the ARP bolts ,it may help the keyboard critics understand if you post photo comparing the stock rod bolt with ARP and give your own comments and observations.
This is for future build - my last motor turbo 3L
968 had 24 Psi boost only used ARP never an issue on head gasket and 650 hp out of 4 cyl
No question these are the best - small investment for best bolt
guys like you helped me understand what it takes to get car to preform as it was meant to - now my focus is this 996 -I have 17 years of racing behind me but not my passion for Porsche,this is my first 911 - 106 K miles and a blast to work on - can't wait for spring
http://www.westwoodcylinderliners.co...le-liners.html
The company does the 996 steel liners in the U.K. , a lot cheaper than nickies, I'm not saying they are as good but might be an alternative for someone with limits on budget, they do a d chunk repair liner too, just get your machine shop to fit
