Connecting Rod Bolts

[davidricardo86]

I was trying to find some more information on connecting rod bolts but the search didn't turn much help at all. Maybe someone can help me here.

Right now my CA has oem rods and bolts on the rebuild i did a while back. I'd like to add a little more reliabilty into the bottom end rod bolts as i read that they're prone to failing (probably due to driver or tuning error, etc). Unfortunately I can not afford billet rods at the moment so this is my next best option.

I remember someone posting something about certain ARP connecting rod bolts being availble for the CA18DE(T) so i went and did a quick google search. Here's what i found:

http://cgi.ebay.com/ebaymotors...photo

$55.00+(shipping $15.00)=$70.00I could not find these anywhere else. I checked summit and jegs and no luck. I looked through the current catalog with no luck aswell. They do claim that they fit oem rods.

http://shop.edoperformance.com....html

$270.48These are apparently Jun connecting rod bolts. They're probably really good as far as quality and performance is concerned. I trust the Jun products but will they work with oem rods or aftermarket rods? It doesnt seem to be stated. I'll send them an email, maybe they can tell me.

Which one of these would be correct? I like the ARP set because of price and quality. What do you think? Why are they not in the catalog?

If any of this has been mentioned before, let me know, thank you.

Heres some good info from ARP's tech info:http://www.arp-bolts.com/Tech/Tech.html

ARP Complete Rod Bolt KitsAll applications

Choose from the following:GOOD: STD HIGH-PERFORMANCE (Hi-Perf) BOLTSA premium grade 8740 alloy chrome moly steel is used to manufacture ARP High Performance connecting rod bolts. This material is heat-treated to provide a tensile strength in the 200,000 psi range, which is substantially stronger than the OEM bolts. Cycle testing shows ARP High Performance rod bolts to be nearly five times more reliable than stock bolts.

BETTER: WAVE-LOC® HIGH PERFORMANCE BOLTSThe same heat-treated 8740 chrome moly steel is used to make these rod bolts as ARP’s standard High Performance rod bolts. The big difference is in the shank design, with ARP’s exclusive (and patented) Wave-Loc technology providing substantial benefits. Because there are fairly wide tolerances in factory bolt holes, the bolt must be able to fit snugly and a knurl is applied. Unfortunately, these knurls cut deep into the bolt material, leavingsharp edges and enormous “stress risers” that promote failure. That’s why ARP developed the Wave-Loc design that features symmetrical waves and has an effective interference range of .0005˝ to .007˝ for proper cap alignment.

BEST: “PRO” SERIES WAVE-LOC BOLTSFor the most severe applications, in conjunction with aftermarket I-beam rods, ARP has developed the “Pro” Series Wave-Loc bolts. These ultra heavy-duty rod bolts are made from a special material designated ARP2000. It has approximately 200% the fatigue life of 8740 chrome moly steel and has a tensile strength of about 220,000 psi, and is capable of more than 12,000 lbs. clamping force.



ARP Rod Bolts

ARP manufactures replacement rod bolts for most popular Import engines made of premium grade 8740 chrome moly steel and heat treated to a nominal tensile strength of 190,000 psi. They are far superior to OEM fasteners in terms of durability and service life - fully capable of handling the extra stress of high combustion pressure engines. For extreme apps, rod bolts made of special ARP 2000 material with an awesome 220,000 psi nominal tensile strength are available, including those with the patented Wave-Loc design.

[zero_gripS13]

i had the ebay arp installed recently there regular 8740 non waveloc .. nothing special youll have to get your rods reconditioned.

they should be plenty better than oem.. if u want any fancy ones like i did i wanted arp2000 and stuff but arp took to long u need to send a rod and bolt into arp... theyll try to match something up..

the ones from ebay come with instructions and moly lube. should be worth the extra money to recondition the rod..

just what i learned when i decided. hope it helps

**edit* ebay ones from ericperformance are custom so u wont find em anywhere else, they come with no part numbers and he wont disclose the info i was pretty pissed.

[r34 gtr]

Yeah, they look pretty choice. I bought me a set and they look good enough for government work.

[davidricardo86]

i had the ebay arp installed recently there regular 8740 non waveloc .. nothing special youll have to get your rods reconditioned.

they should be plenty better than oem.. if u want any fancy ones like i did i wanted arp2000 and stuff but arp took to long u need to send a rod and bolt into arp... theyll try to match something up..

the ones from ebay come with instructions and moly lube. should be worth the extra money to recondition the rod..

just what i learned when i decided. hope it helps

**edit* ebay ones from ericperformance are custom so u wont find em anywhere else, they come with no part numbers and he wont disclose the info i was pretty pissed.

What do you mean by when you say reconditioned?

Yeah, they look pretty choice. I bought me a set and they look good enough for government work.

So they are pretty good. They're the more basic boltfrom ARP but still a bit stronger than oem bolts. I'll probably end up gettting a set of these.

[zero_gripS13]

whenever u change rod bolts hte rod needs reconditioned, to make sure its still circle since the new bolts might cause the 2 halfs to be slightl offset...

take em to a machine shop have em press em in your rods and recodition em theyll know what to do i didnt even open my mouth and my machine shop said it needed done, only rods with dowell pins can get away without recondition.

[mbmbmb23]

**edit* ebay ones from ericperformance are custom so u wont find em anywhere else, they come with no part numbers and he wont disclose the info i was pretty pissed.

You might try and call ARP and see if they have anything on file as a crossover part for the CA18DET...or....measure a stock CA rod bolt and see if they can match it for you. I'm guessing that ericperformance just sent their bolt in....ARP measured it and told him "ah yes, looks like a rod bolt from a 95 mitsubishi XXXXX will fit exactly" and he just buys those and re-packages them. Its the same way there is some website selling "the hammer" shift knobs which are actually factory Evo knobs that ship to you with a Mitsu part number

Anyhow, good luck. Let us know what you find out.

[davidricardo86]

Heres what the seller for the Jun set said.

Hello David,

From what I know these are direct replacements. Other then resizing the bearing everything else should fit fine.

Yohann Chao

AIM: EDO EDOPerformance.com

Office 714-602-5741