dommyy13

Trying to order some pistons soon, I found JE + Eagle rods combo for $740 with piston rings and ARP rod bolts. My question is which compression to run. Should I go with 9.0, 9.8, or 10.7 for a goal of 300-350 HP? A friend is telling me to go with the 10.7, but I feel that is too much for a DD turbo, and I am leaning towards the 9.8, with the 9.0 seeming too low.

This is all on a b16 bare block, so no use telling me to just go stock internals. I have to buy pistons/rods anyways so why not go forged from the start :D

Also, block guards. I know most people on this forum, if not all, are kinda against block guards, but with an 81.5mm bore would it give a decent amount of protection and add to the reliability of a DD turbo engine? Or should I just save myself $100 and go to the casino instead?

Thanks!

SiRCiviC94

Good for 400 on stock sleeves from what I read. I always like JE and wiseco pistons

OneBadTurboCRV

Instead of reading and repeating - KNOW... because knowledge is power!

For those low goals stock internals would be fine. I understand your logic, but sometimes more isn't always better. Either way, you shouldn't be choosing ANY 2618 piston. A 4032 forging would be much more suited for your application. Something like a Wiseco piston would be more up your alley.

As for what compression to run, that all depends on a few things like turbo size, fuel availability, who is tuning it, ect... 9:1 is perfectly fine and is the accepted minimum compression to run and not have an extreme loss of power out of boost. Either way, for your power goals and potential fuel anywhere between 9:1 to 10:1 would be fine with an average tuner on pump gas.

As for block guard, they have been disproven a long time ago. They help warp cylinders, are prone to uneven cylinder load distribution, and almost always lead to cracking the sleeve/s. Whether they work or not, they are absolutely NOT needed for your goals no matter what. Stock sleeves can hold 400-450whp without question...

Finally, WHP is the accepted measuring stick around here. Even though torque is more important, these engines are pretty consistent to the fact that WHP can be used reliably. So I am assUming you are wanting 300-350whp and not 300-350hp...

dommyy13

^Sweet thanks for the information! I think I will be going with wiseco pistons, I had no idea that JEs were made from different material and had to read up on them.

Also, no block guard then. Didn't think I needed one anyways but friend kept telling me to get one..

How would Wiseco 10.7:1 pistons work with turbo? I want to go NA for a little bit and not lose power going with the 9:1 pistons, unless the loss of power is not a big amount (let's say <10 HP). I'm not too worried about the tuning aspect, I live in socal and have a few good tuners in the area, thinking of going with Churches tuning atm. I will be using pump gas, 91 octane.

And yes, i did mean WHP. :D

SiRCiviC94

Hm that'll steer me off a Je piston, is cp made or the right material? Lol

Hmmmm

http://item.mobileweb.ebay.com/viewi...id=39596350094

OneBadTurboCRV

What do you mean? I thought you said you were going with Wisecos?

No, CP and JE are made with same silicon rating.

You can use whatever compression you would like with a turbo setup. It reacts good to ANY compression. BUT, your fuel will be the limiting factor by far. Shoot for the 9:1 to 10:1 range.

HondataB18

wussup man, i have bnib cp pistons for bseries for turbo check my thread or text 3473483916

OneBadTurboCRV

This isn't a dating service, but thank you for your phone number anyways.

TheShodan

iTrader: (14)

JE pistons are still rather acceptable, even though they use a differing silicon content. Wiseco is optimal, but that doesn't mean JE is bad (Still on same JEs after 56 events and 10 years..), but I still have my wisecos in 2 other builds.

I completely agree with N3V3R, stick with 9.0:1-10.0:1... You want NA stay NA. If you want Boost, then build for it. Either **** or get off the pot here. If you're driving around "NA for a while", you're wasting time. Either wait to do it all, or build it now and start working on it.

HOndataB18, give the guy a PM..

OneBadTurboCRV

My JE FSR's are at 0.0045" P2W and they are MUCH quite than another build I have with CP pistons and 0.0045" P2W... The FSR technology has been the way to go for YEARS... but not cost effective until recently for these rice burners. Either way, the 4032 forgings like Wiseco are automatically assumed to not be able to hold higher horsepower. The biggest key is upgraded wrist pins and proper P2W clearances... My other build has Wisecos, and they don't knock at all even at 0.0035" P2W... it is all about proper parts selection and proper installation...

dommyy13

Yes you guys are absolutely right, I need to just make the right decision and go turbo.
Thanks for the advice btw, it's been really helpful.

I'm gonna order the pistons tonight, how will I know which size main and rod bearings to order? Is that something I should be talking about with the guy that's gonna put my block together? Or is it something that I need to figure out before taking the block over to get bored and honed?

OneBadTurboCRV

He measures first, you/he buys bearings, measures again, possibly has to buy different beartings, and then everything is good.