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

    • I'm pretty much healed up post surgery so I spent another almost full day out in the shed re-arranging everything to make room for all of the shit that I've taken off the car.  I need to get everything off the floor and away from the car for when I start making a massive mess stripping off the remaining body deadener and then for the the painting process.  Almost got the shed to a point now where I feel I can actually start working on the car again (clean shed clean mind or something!).  Almost 11 years of accumulated car parts, building supplies, tools, junk, etc have taken a long time to get in some sort of order again!  Most stuff is now boxed up and in the back shed if it's not car related.  Most people would still be horrified walking into my shed but it's significantly better than it was before!   For those that saw my separate post the other day, yeah I ordered one.... This version- I convinced myself to stop being a clown, wake up to yourself and realise it will take you 5 weeks to make one by which stage you're over working on the car again...  Maybe I am getting on top of my "mental ailments" and making smarter choices.... $1450 delivered which will take my miserable half-dutch arse a few days to get over having spent that much!  If I don't have a use for it straight away after my car is off it I might even see if there is a "rental market" for them.  See if anyone wants to hire it for a period of time.  $25 a week or something like that.  I'll worry about that when my car is actually ready to come off it though as that might be a while away!! There's now no excuses now for not ending up with an underside you could eat off! Away for kids sport the next few weekends so hopefully can get the rotisserie assembled ready to go for the car to go straight on it the next available weekend.    
    • I always use my Karcher, but it's only a little one that I picked up from Supercheap  The only issue I ever had with a pressure washer was when I was a kid cleaning coaches, they had a hi-po industrial sized petrol jobbie that would strip paint if you got to close I saying this, we have a fairly high power washer at work with a diesel powered heater that sprays water at about 60°c, it works great for removing old wax and road grime on the underbody after some foam cannon action, albeit from a "stand off" distance of a few feet
    • Sorry no - The sandtrap adventure ended the day, happened at the end of the last session. At that time I wasn't hearing any weird noises nor were the brakes shuddering anymore. It was only when watching the videos that I remembered I had these sounds early on!
    • Did the noise appear after your sand trap adventure? Could be something got dislodged and is playing rub rub. Even a rock wedged somewhere.
    • Is there a shroud around the tailshaft spline into the back of the box? They can rub and make a horrible noise if they are not on straight/damaged. The heat might have caused it to grow too much in one direction and rub.
×
×
  • Create New...