i am interested in purchasing some of these for my newly boosted application i know the set used on our motors is the ARP 234-7401

but would i be able to use these e-bay knockoffs that seem to be made from the same material and designed the same way anybody used fastners from this seller..?

heres link
http://cgi.ebay.com/ebaymotors/ws/eB...077477670&rd=1


well i had already purchased the arp's but saw these and was like damn i paid $100 more... just wanted to see if anyone had used them before...

also how do these get installed does the stud go till it doesnt tighten anymore how does this tighten so that if you loosen the nuts later they wont come all out at once, and yes i did see that they have a allen head set screw on top to tighten them but was unsure.

 

why take a chance? $100 more for bolts, or $1000 for an engine when you have to tear it down and rebuild it.

 

I bought these and will be using them on my 383 T88 combo.

 

have you used them yet...?

 

Engine hasnt been installed yet. I have put them on though... I tq'd them to 70ft-lbs.

 

Oh, and just put sealant on the studs and use an allen wrench and screw them in until they bottom out... no need to crank on them. Just snug them down with an allen wrench.

 

Would I use them: absolutely not.

rich

 

how many miles have you put on the setup you used them on you say...they seem to be the same **** as the arp...

 

"seem to be" and "are" are two completely different things. like rich said, no way I'd use them.

 

they are rated for 190,000psi as the arps hold 200,000 they are made of the same 8740 chrmoly steel as the arp's so besides the fact the arp's hold 10,000 extra psi....what would make them different from the ARP's but the name unless the vendors is lying about the description in the ad....and i really dont see the extra 10,000 psi bugging me as i am a low HP motor...

 

Because people like to buy big name stuff... the only way these wouldnt be good is if the vendor was lying about the material. I have these and ARP's and they are identical visually. Perhaps I should have the material analyzed to verify composition...

 

Just because two items look the same on paper, does not mean they will perform the same. Seen this many times. A lot of it may be quality control, also. Bet ARP easily exceeds their specs, rather than just "eeking by".

 

Agreed... especially when comparing heads/ flow #'s.

ARP seriously overcharges though too Sometimes people equate to spending more money = better quality. Sometimes that is the case, and sometimes it isnt.

If you think about a small rod (no threads for simplicity sake). If you put the rod under tension or compression, its performance is based on the geometry of the piece and its material properties. I could compare two of the same rods, one sold from ARP for $9 and one rod sold from DISCOUNTPLUS for $3, the majority of people would buy the expensive one thinking its higher quality.. yet I stated the pieces are identical. Perception is a big factor. people see a low price and ask themselves "whats wrong with it?" perhaps is just a company pulling in less profit then the more expensively priced companies.

People could argue bck and forth on price verse quality. I am going to try them... everyone else can do what they like.

 

i think i might just well try them to it is true there are other companys who make FASTNERS ARP not being the only one....so why wouldnt someone else with the same product try to sell it cheaper to make $$$$ off the companies charging 2x as much....its also a way of picking up NEW BUISNESS if you think about it....

a tommy shirt and fruit of the loom shirt are made of the same cotton so what would make the TOMMY shirt better the NAME BRAND...

 

I am not addressing the specifics of the ARP's vs the off brand. I have specific information about the two products. I do disagree that two products that look the same and are ostensibly made of the same material are identical in performace.

Do you think a POS 4340 crank by "CAT" is identical to a $1,200 Callies piece? My experience says otherwise.

Rich