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Steel Billet Crower Connecting Rod Acura Integra 1.8 Gsr Vtec

^ These are the rods in question.

I've been doing a bit of research on these rods for a turbo GSR build I'm undergoing which in fact I got them used for a stupid low price. Don't worry already checked all the big and small end bores and checked them for straightness and all came out perfect. However I'm getting mixed reviews on these, some say oh they aren't good for over 12lbs of boost (which I find ridiculous plus I can't find a legit source to back up that claim) and others say they are fine. I've only found one other person on H-T that uses them but in a B16 and claims to have made 700-800hp on them.

I just wanted to get a consensus on these rods as far as people's actual experience with them, how much power, on what boost, and their longevity at whatever power. Appreciate if we keep it on topic and not stray off to another dimension lol. Thanks

Runnerdown

The moment someone rates something for XX lbs of boost, disregard it. Those particular crowers are pretty tough and should handle a good bit of power. Whats your setup consist of?

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Well those claims of not being able to handle of 12lbs seemed more opinionated than hard facts anyway. My setup has literally just started and I've just started looking into buying parts. All I've done so far was send my block off to CNC Werx for the sleeve support. The idea is to run a 62mm turbo, 10.5/11:1 CR, 81.5x87. The head i'm still working out but one step at a time.

phaphon

just like runnerdown said don't listen to anyone that uses psi as a reference to power.

Boost Films SFL

Got it. That's why I made this thread lol. Need experience and facts

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Another reason is that I couldn't find many builds w/numbers using these rods. In addition I weighed a set of stock GSR rods and the Crowers the average weight on the stocks were ~541g vs the Crowers averaging at around ~522g. Now I'm well aware that less rotating mass is good but in regards to lets say a big power build I would have expected matching or a slightly higher weight than stock or in this case it wouldn't matter? Any experienced builders with proven backgrounds wanna chime in on this?

Hyper16-Johnny

You won't find much info on builds with these rods mainly because they are expensive. $245ea is not a cheap rod, there are cheaper I-Beam rods on the market. If you are adamant on using these rods, Evans-Tuning uses these rods with the 625 bolts on their True Street hatch which probably cost $1200-1300 for the set. That car made over 1000hp if my memory recalls me.

Don't forget, there are cheaper I-Beams on the market. You can probably get Pauter or Manley I-Beams with the 625 bolts for under $1000.

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Well good thing I got the set for $200 and all check out after methodically inspecting them . Check it

Turbo-LS

iTrader: (4)

We run the crower rods in our integra making little over 800whp and not afraid to push harder on them when we upgrade from the 62mm turbo to a big boy turbo. We run them with the ARP2000 bolts 10k rpm no issues

Boost Films SFL

Nice! Thanks for your input. Are the ARP 2000's necessary or just for added insurance?...for your setup that is

darnizzle8805

iTrader: (1)

The ARP 625 bolts are the better/ stronger bolts.

Turbo-LS

iTrader: (4)

I got the rods lightly used, built one motor and got some hard passes out of that setup, Cracked the water jacket of the block. When doing another block opted to change out the bolts seeing those had been torqued a couple times.

The 625 bolts are the high end bolts.

Boost Films SFL

Ok that makes sense.

Hyper16-Johnny

The arp2000 come standard on almost any rod set now, they work perfectly fine as long as you keep up with maintanence. The arp625 are the upgrades of the arp2000. It's made of inconel, therefore, is stronger ( can handle more power) and less prone to vibration so less chance of the bolt backing out on high rev builds. Nonetheless, arp2000 or arp625, it's advisable to retorque and check bearings after ever event.

yungkhmer

$245 for ONE rod?

Runnerdown

Yes that's the list price direct on crowers site. They have always been expensive rods.

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Ok question specifically to the right sized 625 bolts I would need to fit on the Crowers...is it the

"Custom Age 625+ Material, 1.500" Under Head Length, 3/8" Thread, 7/16" Wrench Head" ?

Apparently they don't just make em per after market rod based on the engine from what I seen after looking online as in I can't just type in "GSR/B18c1 ARP 625 rod bolt" and get the ones to put on these Crowers it just brings me to the stock style version of the ARP 625's.

Muckman

iTrader: (2)

Im not certain on the length, probably 1.5" but you would have to measure the ARP2000 bolts that came with it. The 625+ 1.500" length, 3/8" thread, 7/16" head is part number 300-6704 and $35 per bolt. lol

http://www.summitracing.com/parts/arp-300-6704

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Thanks. I'll measure it in a few. Thanks for the link btw. Yes they are expensive but right now I'd rather build the motor once the right way so I know when I wanna dig deep in the loud pedal I'm covered like Allstate lol.

JRCivic1

The quality of the Crower Billet rod is as high as any that the current host of big power FWD cars tout in their engines... so you will not have to worry about breaking a rod at just about any power level... except the EXTREME power of the top level cars (like Speed Factory's record car). You will have to worry about bolt failure... which would appear to be a rod failure after you pick up the pieces and look through the hole in the block at the carnage... so get a BRAND NEW set of rod bolts and install them. I personally have built dozens of engines using Crower Billet rods and have never seen a failure at any power levels under 800 wheel HP (to be clear, I have never seen one break period, with many engines at 800+ wheel HP). The ARP 2000 bolt is an excellent choice and is very affordable. The ARP 625+ aged bolts are the top-shelf state of the art bolt available at this time, and since you got such a screaming deal on the rods anyway, spending another $300 on bolts still means you are in this set of rods at a righteous price.

By the way, I just purchased new 625+ bolts for my Custom Titanium Crower GSR connecting rods and they are 1.60" under-cap length, 3/8" diameter with a 7/16" 12-point head. I believe the typical length is 1.60" under cap, so you may want to double check that measurement.

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Thanks man. I wasn't sure what size so the 1.50" was just a guess I didnt get to measure anything yet.