Shot peen B16A Rods...any troubles?

[h46it]

Hey guys,

I just wondering if anyone has ever had a problem with Shot Peen B16A? I've heard that they turn brittle? Does anyone have experience with this? If you could help out, i have a swap soon and i wondering if i should just get some aftermarket rods?

Thanks.

[4-Door Flunky]

I thought shot-peening rods and other parts had just the opposite effect, making them tougher.
I don't have any real experience, though. You might check the tech forum:
http://www.automotiveforums.com/vbulletin/f1041/
Good luck.
Flunky

[h46it]

4-Door Flunky,

Yeah, that's what i thought too. But i just heard that some ppl say that they get brittle not the oppsite. I'm just wondering. I just in the middle of reassembling the engine. I'm at the point where i'm putting the rods back in. So i kind of need to know fast. Thanks for the help.

[Cjz89civic]

Shot Peening makes the rods stronger, it relieves the weak part of the rod. This usually goes hand in hand with de-seaming the rod meaning you take out the cast seam on the side of the rod. Inturn making them stronger. This is true with any rod. A little note if ya did not know is that the stress of a rod goes in a striaght line so if there are no seams and it is shot peened it will rely on the over all mass of the rod to take the stress instead of the seams witch are a line that goes down the sides of the rod.

[Santas90Si]

Ohh really so if I had my a6 rods shoot peened then they coudl stand up mild turbo? I have acess to a shot peener for free.....

[Cjz89civic]

they should on average de-seaming and shot penning will increase your rod strength by about 20%-30%. This is a average given on load tests done at a shop I used to work for.

[h46it]

Cjz89civic,

Do you have any pics of a B16 shot peened? I have mine done but i just want to compare to another. I still have the cast line on the side. The shot peen did not remove the cast line. Its still there. I'll try to get a pics up and tell me what you think.

Thanks.

[Cjz89civic]

No I dont have any pics, but if I can get over to my buds shop Ill get you a couple shots of them. De-seeming the rod is almost as important as shot penning. hmm wonder why they did not take the extra hour to do the de-seeming...

[h46it]

Cjz89civic,

Yeah i'm not too sure why they would spend the extra hour just de-seaming? Maybe they're lazy? I'm not too sure. Here's a pic of mine.

[Cjz89civic]

Pic did not work

but I cruized the net and it seems that all the rods I found where not de-seemed. Im going to pull the pan off my motor and take a pic of what a d16z6 rod looks like when the shot peened and de seemed. Here is a pic of shot-peened rod

[h46it]

Yeah the link didn't post up. But here's my imagestation. Take a look at rod.

http://www.imagestation.com/album/?id=4290349241

But you think its safe to run the rods without de-seaming them at all? Or do you think i should get it done? I'm not running FI. I just have a NA running 11.5-11.8:1. Do you think the rod will stand up to that with/without the de-seaming? Cjz89civic, thanks for all of this help. Thanks for your time.

[Cjz89civic]

You should be ok running it still seemed the shot peening takes out most of the strees that rod will obtain. De-seeming just moves the stress more to the center of the rod. If your not running a turbo I would not worry about it.

[h46it]

Cool, i think you just saved me about like $350 bucks. Now that i think that i'm not going with eagle rods.

Hey just off topic. But how did you resize my pic? I just got that imagestation.

Thank you again for everything.

[Cjz89civic]

If you go where the pic is click it to make it full size in imagestation which is smaller than what is posted. Then right click the pic go to properties then copy the addy of the pic. Then come back to auto fourms click the IMG button and paste the addy there.

Sorry for the OT post guys dont shoot me.


:machinegu Cjz89civic:rocket: