Jump to content
SAU Community

Recommended Posts

  • Replies 148
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Posted Images

I had mine @4 thou fairly quiet but still noisier than stockers and little more on first start up .

Good pistons but make sure you check the rings if you use theirs .

I used 87 mm in mine and they gave me 8.7 to compression using a stock h/gasket .

Unfortunatly i dont have the car any more to show you so you can hear for yourself , as i have a 34 now .

Link to comment
https://www.sau.com.au/forums/topic/68636-arias-pistons/#findComment-1272006
Share on other sites

I had mine @4 thou fairly quiet but still noisier than stockers and little more on first start up .

Good pistons but make sure you check the rings if you use theirs .

I used 87 mm in mine and they gave me 8.7 to compression using a stock h/gasket .

Unfortunatly i dont have the car any more to show you so you can hear for yourself , as i have a 34 now .

Why do you need to check the rings? I also have NOS so will the Cromemolly(spelling) rings supplied be ok?

8.7:1 sounds good. Is that the standard for these pistons or an option?

I'm looking at 3thou with teflon coating atm... going in on sat, still waiting for some pistons tho

do you still have the 33 plates Jerry??

Link to comment
https://www.sau.com.au/forums/topic/68636-arias-pistons/#findComment-1277092
Share on other sites

Why do you need to check the rings? I also have NOS so will the Cromemolly(spelling) rings supplied be ok?

8.7:1 sounds good. Is that the standard for these pistons or an option?

I'm looking at 3thou with teflon coating atm... going in on sat, still waiting for some pistons tho

do you still have the 33 plates Jerry??

Sorry mate the plates have been sold , i know you showed some interest but i sold them with the car .

I dont know about 3 thou clearence though , Arias specify 4 Thou , 3 maybe to close and they may pick up on the bore .

You wont have 8.7 : 1 compession unless you use 87 mm pistons , if you go 86.5 you should have 8.6:1 . You may want to use a thiner h/gasket or shave the head a little to achive higher comp . By boring out to 87 you compress a bigger volume to the same comp chamber so you have slightly higher comp .

The chrome ring ( only top one ) is fine but you have to run in a bit harder than normal .

You have to check the rings for size , you put them in the bore and measure the gap to make sure its not to small or to big , measure the the oil scrapers too .

What happen to your engine ? did you do a big end ?

Link to comment
https://www.sau.com.au/forums/topic/68636-arias-pistons/#findComment-1277265
Share on other sites

I've got 87mm Wiseco's in my RB30 @ 4thou.

The piston slap can be heard on cold starts but honestly it is only a light thud.

I mistook it for a little bit of top end noise.

Once warm, they are silent.

I've ran running-in mineral oil for the first 1000 (3 oil/filter changes), then Motul 10w40 or 30 (I forget) mineral for the next 9,000 (2 oil/filter changes). Total its done 11,000km's.

I'm now running Motul 8100 5w40 and have noticed that slap when cold is indeed less than mineral oil.

Its not using 1 drop of oil & oil pressure is nice and solid so I'm a happy chappy. :rofl:

Link to comment
https://www.sau.com.au/forums/topic/68636-arias-pistons/#findComment-1277332
Share on other sites

Solely for the purpose of topping up my knowledge bank, can somebody explain the positives vs negatives of larger and smaller piston to bore clearances?

Wiseco state to run the larger 4" clearance when running 24+psi or for track use.

The pistons expand as they get hotter, track use and 24+psi, I figure that Wiseco figure lol, is around the mark where you should allow just that little bit more room for expansion.

You don't want a piston catching in the bore, if it does you will be able to check out the condition of your crank via a nice little peep hole in the bloke. :rofl:

Thats my understanding.

Link to comment
https://www.sau.com.au/forums/topic/68636-arias-pistons/#findComment-1277333
Share on other sites

Arias state a 4 thou clearance is required and recently i think they've changed it to 4.5 thou.

With the rings , we found the stock arias chrome rings to be a bit iffy with some engines getting quite a bit of blow-by. I used nissan n1 rings in my arias pistons but its not running yet so i can't comment. Was gonna run the engine in on penrite HPR 15 as some people i know have done it with good results. Will post up results in the coming weeks.

Link to comment
https://www.sau.com.au/forums/topic/68636-arias-pistons/#findComment-1277647
Share on other sites

I ran mine in on Penrite Running in oil.

For running in you need an oil that doesn't have non-friction modifiers.

The Penrite HPR gear apparently does.

After a couple hundred km's do an oil/filter change.

Boostd, Wiseco recommend adding 0.001 to the standard bore clearance if running NOS.

Link to comment
https://www.sau.com.au/forums/topic/68636-arias-pistons/#findComment-1277770
Share on other sites

Arias state a 4 thou clearance is required and recently i think they've changed it to 4.5 thou.

With the rings , we found the stock arias chrome rings to be a bit iffy with some engines getting quite a bit of blow-by.  I used nissan n1 rings in my arias pistons but its not running yet so i can't comment. Was gonna run  the engine in on penrite HPR 15 as some people i know have done it with good results. Will post up results in the coming weeks.

I'm running Arias 4 Thou clearance with the supplied rings and no problem with blow by.

Running Castrol Type R synthetic 10w - 60.

They are fairly noise on first stratup but let it warm up for about 5mins and they are fine.

Link to comment
https://www.sau.com.au/forums/topic/68636-arias-pistons/#findComment-1277963
Share on other sites

I've ended up buying some Venolia's from CRD. Venolia recommend 3 to 4 thou and .5 variance on top of that depending on engine output. Also purchased some N1 piston ring which apparently cannot be used on Arias. Cost $1550 inc rings. I had a listen to a 34 running 4 thou venolia's and you could ever so slightly here a knock when dead cold. Hopefully 3 thou on mine will not be noticable...will know in a week.

Link to comment
https://www.sau.com.au/forums/topic/68636-arias-pistons/#findComment-1278704
Share on other sites

  • 3 months later...
I've ended up buying some Venolia's from CRD. Venolia recommend 3 to 4 thou and .5 variance on top of that depending on engine output. Also purchased some N1 piston ring which apparently cannot be used on Arias. Cost $1550 inc rings. I had a listen to a 34 running 4 thou venolia's and you could ever so slightly here a knock when dead cold. Hopefully 3 thou on mine will not be noticable...will know in a week.

I've finally finished my rebuild. My Venolia's were installed using 2.5 thou clearance as recommended buy the Venolia Rep. I am very happy to report that they have absolutely no knock at all, cold start and all. I 'll see how they bed in...should be fine with the N1 rings.

chreers

matt

Link to comment
https://www.sau.com.au/forums/topic/68636-arias-pistons/#findComment-1455622
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • You're not the first person that's said that about this car lol. A Touring wagon GT in Spark yellow mica would be the dog's danglies 😆 I will keep an eye out for a future purchase for sure. The seats are almost like the OEM Recaros... electric adjustment for fore/aft and tilt movements except reclining.   
    • Yes!! I love these! It's a shame its not the wagon though!   Thank everything that's holy that it doesn't have the interior of the Aussie delivered ones. Those seats are so much nicer.  
    • I'm both sorry and thankful that you do that. 
    • 2001 BE5D Subaru Legacy B4 RSK (3rd gen) EJ208 (pink injector) Twin Turbo 280PS 5-speed manual Full time 4WD "RSK" grade which means all of the above LQC option which means stock rear spoiler  I got it primarily to export to someone outside Japan who was interested. These BE5 Legacy B4 RSKs are going through a bit of a resurgence right know in Japan as they are one of the few cars from the "turbo, manual, RWD/4WD, 280hp gentleman's agreement era" cars that don't require stupid money to purchase. Which for some people might be a good opportunity to get as a base for restoration. If I can't find anyone to purchase it I will certainly be doing that myself over the long term. Why? Because it's properly fast in stock form, handles well enough for a GT sedan, there's still enough aftermarket and (if you can wait a while) genuine part support to make it a restoration candidate (<-- that will only get worse over time so it's a case of do it now or choose get a BL5 4th Gen). Mechanically it's fine, has only 89,200kms on the odometer. The problem with this car is that the body and exterior trims are weathered from at least the last 10 years being parked outdoors. I'm the 3rd owner, the first owner was the one that had it for 14 years and barely drove it, had a low-speed front impact (which didn't damage anything behind the radiator support) and got it fixed and sold it. The 2nd owner put most of the kms on it and parked it outside for the last 10 years, hence the door rubbers have seen better days but if you overlook those cosmetic details, it presents pretty nicely. There is some minor rust on the LH rear wheel arch which I'll have looked at too at some stage.  Also as you'd expect from a car this age, the clear top coat is gone, leaving a satin finish on the roof.  Mechanically it's fine (as you would expect from a car with less than 100K kms) but the steering does feel slightly vague around the centre position at higher speeds. So first on the list is to get the steering rack bushes looked at. There's also the Lock button on the remote which doesn't work, but the Open button does.... it means that the anti-theft system thinks it's always open? It seems like if you open the car and don't start the engine within 3 mins or so the anti-theft kicks in again without any beeps or signals. So if you got to start it after that, it won't. You have to push the open button again. That's how I understand it anyway. Just a small irritation but not a big problem to sort out. There's only one mod, the Wangan SPL muffler. Just a tad louder than stock. It's a really good mod for those who don't want to wake the neighbours but still want to hear a more prominent unequal length header EJ20 sound. Anyway I hope to get all those things done eventually, that is unless someone wanted to import it to their country from Japan (where I live). I'm open for negotiations as I really would like a Skyline... but this will definitely suffice in the meantime 🙂 *Disclaimer: This is how I picked it up from the dealer, minus the stuff on the back seat. I haven't cleaned the engine bay or done a thorough exterior clean, aside from spray painting the wipers. 
    • Wow, even with the Audi logo centre caps. I love OEM wheel mismatches. 
×
×
  • Create New...