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

    • New CAS just turned up from NZ Wiring. Looks like a nice bit of gear.  So, yeah. Triggered, bro. Realised I may as well do the cam belt while mucking about with it so will order one of them.
    • Even more fun, leave all the ADAS stuff plugged in, but in different locations, hopefully avoid any codes!   And honestly, all these new cars with their weird electronics. Pull all the electronics out Duncan, and just shove an aftermarket ECU and if needed a trans controller in, along with a PDM. Make it run basic but race car styled!
    • To follow up a question from earlier too since I had the front bar off again (fking!) This is what is between the bumper and the drivers side wheel And this is the navigator side, only one thing but its a biggy! So basically....no putting coolers in the wheel arches without a lot of moving other stuff. Assuming I move to properly race prepping this car I'll take that job on and see how the computers respond to removing a whole bunch of ADAS modules
    • So I prepped the car for another track day on Wednesday (will be interesting to see coolant temps post flushing out and the larger reservoir, with a forecast of 3-14 being 20o cooler than last time I took it out). Couple of things to mention; since I am just driving the car and not taking a support vehicle, I took the rear seats out and just loaded the back up Team Trackday style. Look at all that space! To cover off removing the rear seat....it is weird (note the hybrid is probably different because it wouldn't have folding rear seats) Basically, you remove the lower seat base, very similar to a r series but it is a clip that pulls forward to release the base rather than it being bolted down. Easy Then, you need to remove the side section of the rear seat on each side. There is a 14mm head nut at the bottom of the side piece, the it slides upwards off a hook at the top to release; you also need to unhook the seatbelt from the loop at the top. Then the centre piece is weird. You need to release/fold the seats forward with the tab in the boot on each side From there, there are 2,x12mm headed bolts holding the rear of each seat to the folding bracket, under the trim between the rear seat and the boot (4x christmas tree clips there, they suck). The seat is out but you can see where the bolts attach to the bracket
    • As discussed in the previous post, the bushes in the 110 needed replacing. I took this opportunity to replace the castor bushes, the front lower control arm, lower the car and get the alignment dialled in with new tyres. I took it down to Alignment Motorsports on the GC to get this work done and also get more out of the Shockworks as I felt like I wasn't getting the full use out of them.  To cut a very long story short, it ended up being the case the passenger side castor arm wouldn't accept the brand new bush as the sleeve had worn badly enough to the point you could push the new bush in by hand and completely through. Trying a pair of TRD bushes didn't fix the issue either (I had originally gone with Hardrace bushes). We needed to urgently source another castor arm, and thankfully this was sourced and the guys at the shop worked on my car until 7pm on a Saturday to get everything done. The car rides a lot nicer now with the suspension dialled in properly. Lowered the car a little as well to suit the lower profile front tyres, and just bring the car down generally. Eternally thankful for the guys down at the shop to get the car sorted, we both pulled big favours from our contacts to get it done on the Saturday.  Also plugged in the new Stedi foglights into the S15, and even from a quick test in the garage I'm keen to see how they look out on the road. I had some concerns about the length of the LED body and whether it'd fit in the foglight housing but it's fine.  I've got a small window coming up next month where I'll likely get a little paint work done on the 110 to remove the rear wing, add a boot wing and roof wing, get the side skirt fixed up and colour match the little panel on the tail lights so that I can install some badges that I've kept in storage. I'm also tempted to put in a new pair of headlights on the 110.  Until then, here's some more pictures from Easter this year. 
×
×
  • Create New...