Jump to content
SAU Community

Recommended Posts

Guys

I have aquired a set of "quite useable" 87mm CP Pistons. One of the rings is ROOTED though and thought it best to buy a complete set. I was reading on the hi-octane website (under CP Piston rings):

"Manufacturer: CP or ACL. Depends on our current stock"

http://hioctaneracing.com.au/eshop/product...products_id=633

Does this mean ACL can also supply a replacement ring set for these? Or is there any other option other than the CP rings? The top ring is 1.0mm and the 2nd ring is 1.2mm

Any help would be appreciated!

Cheers

Steve

Link to comment
https://www.sau.com.au/forums/topic/247675-replacement-rings-for-cp-pistons/
Share on other sites

for Total Seal rings (including their patented Gapless rings) try www.performancewholesale.com.au

be careful with which rings you buy, as different brands will have different axial widths (ie: the depth of the ring into the piston groove)

Make sure you check this too.

i'm using a set of acl rings (also known as mahle rings) in a set of CP pistons. The acl rings are actually listed for a mitsubishi 4cyl engine, so i had to get 2 sets, bout $150 from memory

both acl & cp top & second rings are nitrided but the oil control ring in the acl set carries more tention ( personal preference but i like slightly more tention)

i'm using a set of acl rings (also known as mahle rings) in a set of CP pistons. The acl rings are actually listed for a mitsubishi 4cyl engine, so i had to get 2 sets, bout $150 from memory

both acl & cp top & second rings are nitrided but the oil control ring in the acl set carries more tention ( personal preference but i like slightly more tention)

ACL rings seal very well and come highly recommended for street engines

Do you recall which mitsubishi it was?

The ACL RB26 pistons take a 1.5 top and 1.8 2nd ring, while the CP have a 1.0 top and 1.2 (I think) 2nd.

i'm using a set of acl rings (also known as mahle rings) in a set of CP pistons. The acl rings are actually listed for a mitsubishi 4cyl engine, so i had to get 2 sets, bout $150 from memory

both acl & cp top & second rings are nitrided but the oil control ring in the acl set carries more tention ( personal preference but i like slightly more tention)

Do you recall which mitsubishi it was?

The ACL RB26 pistons take a 1.5 top and 1.8 2nd ring, while the CP have a 1.0 top and 1.2 (I think) 2nd.

i cant actually remember. if you can find an acl catalogue they are all in there

Do you recall which mitsubishi it was?

The ACL RB26 pistons take a 1.5 top and 1.8 2nd ring, while the CP have a 1.0 top and 1.2 (I think) 2nd.

correct...nice thick rings provide a good seal.

the CP's 2nd ring is 1.5mm from memory

Edited by DiRTgarage

I just measured - the CP's I have a 1.0mm top and 1.2mm 2nd ring (sames as a set of Wisecos I have...)

shame I cant jam a big fat ring in there :)

correct...nice thick rings provide a good seal.

the CP's 2nd ring is 1.5mm from memory

I just measured - the CP's I have a 1.0mm top and 1.2mm 2nd ring (sames as a set of Wisecos I have...)

shame I cant jam a big fat ring in there :P

are they not new? The new CP's run thicker rings as i tried to use an older set of rings on NYTSKY's engine (i fu(ked one putting them in) and they were too thin. Had to buy a complete set of rings from Quantum just to get 1 second ring out of it...bugger!

could be older style perhaps. The pistons themselve dont appear to have done much work. But definitely thinner rings

are they not new? The new CP's run thicker rings as i tried to use an older set of rings on NYTSKY's engine (i fu(ked one pu.tting them in) and they were too thin. Had to buy a complete set of rings from Quantum just to get 1 second ring out of it...bugger!
  • 9 months later...

Sorry to revive an old thread. However, I am trying to figure out if I have a newer set of CP pistons or not. I bought my CP pistons for my RB26 new back in September of 2007 and have been sitting in the box ever since. I measured the rings for craps and giggles and found that I have a 1.2mm top ring and a 1.5mm second ring. Do I indeed have the newer set of "thicker" rings/pistons?

And on top of that, should I upgrade to a set of ACL rings or others before I slap in those pistons? Thanks all........

Sorry to revive an old thread. However, I am trying to figure out if I have a newer set of CP pistons or not. I bought my CP pistons for my RB26 new back in September of 2007 and have been sitting in the box ever since. I measured the rings for craps and giggles and found that I have a 1.2mm top ring and a 1.5mm second ring. Do I indeed have the newer set of "thicker" rings/pistons?

And on top of that, should I upgrade to a set of ACL rings or others before I slap in those pistons? Thanks all........

they are the new design piston...the rings you have will be fine.

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

    • LOL, when one "money pit" is never enough Noice, and excellent work mate
    • I have more than enough digging, laying blocks, moving gravel, airrating, feeding and top soiling the grass, and setting up the veggie gardens growing some seedlings,  and then removing all the unused rock to keep me busy for the next few months at least,  hopefully the rain stops soon so I can get a few hours in this arvo, but, before that Sunday is washing day, is every body happy, you bet your life we are Nice country road day drives are a day off whenever I'm muscle sore from all the landscaping at the moment, but, more epic multiple day drives will start once the majority of the big jobs outside are completed
    • I hear that would involve some nice country road drives into the hills for Mark...
    • I thought I'd come back and add something I JUST learned. A Toyota LandCruiser with a 1HZ, mates perfectly with a bottle of Nulon brake fluid. As in, it perfectly screws in. Great make shift funnel when you cut the bottom of it off. This may work for your Corolla.   Unfortunately, tipping a 10L drum is much harder than a 4 to 6L bottle, and they no longer include the easy pour tap which was just perfection to use previously.  
    • Guys since i bought r33 gts25t coupe 1994 automatic a/t(manual swap 350z gearbox)  all i got is problems, always problems. Lets start with that when i turn key into ignition(ON) fuel pump doesnt always works. Sometimes i have to turn key twice Off/on/off/on until it primes. Its new, dw300 - 340lph. My gearbox broke so i did gearbox swap, install different intake manifold, injectors and i take pipes. Car was sitting in garage for more than half a year. I did assembly all not that long ago and when i turn ignition cant hear prime. All of sudden it stopped working. Theres many videos on YouTube how to make relay mod on r33 straight from battery so i did and it doesnt work! 😰 30 - battery positive  87 - positive from fuel pump to relay 85, 86 - one of two wires from original fuel pump wires(light blue, grey) and it didn’t work. so I check on ignition and took original BLUE relays wires from trunk, next to fuses. (I believe it’s IGN+ and ECU pin 18. it didn’t work…  tried connecting (IGN+ from og relay) and (ECU 104 from 1of4 FPCM wires) to my new relay 85/86 and it didn’t work.  I unplug FPCM. Didn’t work. im thinking what’s wrong   fuel pump is working, if I leave IGN+ on 85 and 86 straight to ground it works but it’s just nonstop. Since it getting constant 12v after key in ON. light blue wire gives me 6-8v.  so how this should be connected? What causing ECU not giving — on pin? Or I did sth wrong and that’s why it doesn’t work? I need negative signal on ECU that control fuel pump. What this should be?
×
×
  • Create New...