45 replies to this topic

[Inno]

just found this:

 

https://www.calverst...perior-quality/

 

any experience or info

[Spider]

just found this:

 

https://www.calverst...perior-quality/

 

any experience or info

 

You can get the same pistons here for about 1/4 of the price with a choice of rings

 

https://www.precisionintl.com/

[Inno]

 

just found this:

 

https://www.calverst...perior-quality/

 

any experience or info

 

You can get the same pistons here for about 1/4 of the price with a choice of rings

 

https://www.precisionintl.com/

 

Beside price are those make sense?

 

 

I found only this....

PAU127540941H

https://www.precisio...k=PAU127540941H

 

+ rings

 

Am I missing something?....I am from Croatia...I need to add tax and custom on that price plus sipping that may be high

[Spider]

These are a Higher Compression version

 

https://www.precisio...D=1279&EID=3399

 

On that same page, they also list Plain Iron Rings and also Chrome Rings

 

I think you'll find shipping from Aust cheaper than from the UK and I would think that your Tax and Duties would be the same regardless of which country they come from.

 

Guys in UK have bought these and been pleased, the price for them overall worked out less than 1/2 of the AE and around 1/3 of the others, after postage and VAT.

[Inno]

These are a Higher Compression version

 

https://www.precisio...D=1279&EID=3399

 

On that same page, they also list Plain Iron Rings and also Chrome Rings

 

I think you'll find shipping from Aust cheaper than from the UK and I would think that your Tax and Duties would be the same regardless of which country they come from.

 

Guys in UK have bought these and been pleased, the price for them overall worked out less than 1/2 of the AE and around 1/3 of the others, after postage and VAT.

thanks a lot...will see to it...

[dodge44]

These are a Higher Compression version

 

https://www.precisio...D=1279&EID=3399

 

On that same page, they also list Plain Iron Rings and also Chrome Rings

 

I think you'll find shipping from Aust cheaper than from the UK and I would think that your Tax and Duties would be the same regardless of which country they come from.

 

Guys in UK have bought these and been pleased, the price for them overall worked out less than 1/2 of the AE and around 1/3 of the others, after postage and VAT.

From the look of the engraved ID on the crown those Hypatec high compression pistons (Equivalent to AE type 21253) look uncannily like the pistons supplied under the County brand here in the UK. County part No CP726K with Grant rings County part No G1818. Manufactured in Taiwan and from my experience are not only very good but considerably cheaper than the alternatives.

[Spider]

 

From the look of the engraved ID on the crown those Hypatec high compression pistons (Equivalent to AE type 21253) look uncannily like the pistons supplied under the County brand here in the UK. County part No CP726K with Grant rings County part No G1818. Manufactured in Taiwan and from my experience are not only very good but considerably cheaper than the alternatives.

 

 

County Pistons are OK, but not a performance piston.

 

County I'm sure are made in India.

 

Hypertecs are not County and are made by Rite Way Industrial in Taiwan. http://www.rightway.com.tw/

 

I'd suggest doing a search on 'Hypertec Pistons' to see what other uses have said. They are an ACE Piston, very high quality (way better than AE) and made from a high quality Silicon Alloy that has a low expansion rate, so that Bore to Piston Clearances can be closed up. While not a competition piston per se, there are many who have used them in that application and been very pleased with them. I've used countless sets and am yet to have an issue, even after machining the crowns in some to adjust CRs, one set I had to take down to 0.090" thickness and are still going well. Many have used them in boosted applications without issue.

 

 

All relevant info for the machine shop on the Box. County don't provide their info in this way.

 

 

[dodge44]

Still got the County box (Pic attached) but the '21253' pistons are safely tucked away inside a working engine :) Engraving on the crown looks the same though. Box says 'Made in Taiwan' so good chance they are at least from the same factory, if maybe not the same spec?

 

Roger

Attached Files

•  County 21253 pistons.jpg   82.27K   2 downloads

[Inno]

 

 

From the look of the engraved ID on the crown those Hypatec high compression pistons (Equivalent to AE type 21253) look uncannily like the pistons supplied under the County brand here in the UK. County part No CP726K with Grant rings County part No G1818. Manufactured in Taiwan and from my experience are not only very good but considerably cheaper than the alternatives.

 

 

County Pistons are OK, but not a performance piston.

 

County I'm sure are made in India.

 

Hypertecs are not County and are made by Rite Way Industrial in Taiwan. http://www.rightway.com.tw/

 

I'd suggest doing a search on 'Hypertec Pistons' to see what other uses have said. They are an ACE Piston, very high quality (way better than AE) and made from a high quality Silicon Alloy that has a low expansion rate, so that Bore to Piston Clearances can be closed up. While not a competition piston per se, there are many who have used them in that application and been very pleased with them. I've used countless sets and am yet to have an issue, even after machining the crowns in some to adjust CRs, one set I had to take down to 0.090" thickness and are still going well. Many have used them in boosted applications without issue.

 

 

All relevant info for the machine shop on the Box. County don't provide their info in this way.

 

 

 

they do not look shiny and fancy as SW or MED but I thrust they are good if you have such extensive experience with them...must be good for my less than or around 100HP A+ engine.

 

What would be matching (higher end ) rings for those pistons?

[Spider]

Dodge44, they may come out of the same factory these days ??  They would likely be of a different spec though. The Hypertecs are spec'ed up by Precision International here in Australia.

 

 

 

 

From the look of the engraved ID on the crown those Hypatec high compression pistons (Equivalent to AE type 21253) look uncannily like the pistons supplied under the County brand here in the UK. County part No CP726K with Grant rings County part No G1818. Manufactured in Taiwan and from my experience are not only very good but considerably cheaper than the alternatives.

 

 

County Pistons are OK, but not a performance piston.

 

County I'm sure are made in India.

 

Hypertecs are not County and are made by Rite Way Industrial in Taiwan. http://www.rightway.com.tw/

 

I'd suggest doing a search on 'Hypertec Pistons' to see what other uses have said. They are an ACE Piston, very high quality (way better than AE) and made from a high quality Silicon Alloy that has a low expansion rate, so that Bore to Piston Clearances can be closed up. While not a competition piston per se, there are many who have used them in that application and been very pleased with them. I've used countless sets and am yet to have an issue, even after machining the crowns in some to adjust CRs, one set I had to take down to 0.090" thickness and are still going well. Many have used them in boosted applications without issue.

 

 

All relevant info for the machine shop on the Box. County don't provide their info in this way.

 

 

 

they do not look shiny and fancy as SW or MED but I thrust they are good if you have such extensive experience with them...must be good for my less than or around 100HP A+ engine.

 

What would be matching (higher end ) rings for those pistons?

 

 

These were only taken from the box for those photos. I'm sure I could spend some time polishing them up to look as good or better than anything else !! But for no gain

 

I've fitted them in engines up to the 112 HP / 7500 RPM level without issue. Others have taken them much further.

 

As I mentioned, they are the same Pistons Calver sells, only at a better price.

 

Ring choice is never an easy thing (or maybe I just think about it too much!!) Cast Iron Rings are probably the easiest to use and require a less fussy Hone on the Bore, quick to run in and will give a reasonable like. Chrome (which are Cast Iron Rings, but the Top Ring has a Chrome Face) are a little more particular in what they 'like' for a bore finish, take around twice as long to run in but will usually give a very long life. They are well suited to boosted applications and if you are having the block sleeved, these would be my 1st choice of ring.

 

If you don't have a lot of experience, I'd suggest a set of Plain Cast Iron Rings and be sure that the Oil Control Ring is a 3 piece type. The Hastings Ring Sets Precision offer are pretty good.

[Inno]

 

What would be matching (higher end ) rings for those pistons?

 

 

These were only taken from the box for those photos. I'm sure I could spend some time polishing them up to look as good or better than anything else !! But for no gain

 

I've fitted them in engines up to the 112 HP / 7500 RPM level without issue. Others have taken them much further.

 

As I mentioned, they are the same Pistons Calver sells, only at a better price.

 

Ring choice is never an easy thing (or maybe I just think about it too much!!) Cast Iron Rings are probably the easiest to use and require a less fussy Hone on the Bore, quick to run in and will give a reasonable like. Chrome (which are Cast Iron Rings, but the Top Ring has a Chrome Face) are a little more particular in what they 'like' for a bore finish, take around twice as long to run in but will usually give a very long life. They are well suited to boosted applications and if you are having the block sleeved, these would be my 1st choice of ring.

 

If you don't have a lot of experience, I'd suggest a set of Plain Cast Iron Rings and be sure that the Oil Control Ring is a 3 piece type. The Hastings Ring Sets Precision offer are pretty good.

Thanks a lot...guess they do have those 2 types as far as I saw....I do not have any experience in building mini engine beside hours and days studying all what I can get...but do have some mechanical experience and many years ago did some engine rebuilds and was doing a lot car and bikes mechanics - have idea how to hold the tools....

 

You are right pistons are not shiny as some I was checking but guess that is not a big issue.

 

Think will go for Chrome if that may be better quality at the end and give a bit better performance since I need to bore the block anyway to +60 (standard now) and already plan to terrorize guys in the machine shop with extra honing to the exact each piston's right dimension (as you posted few times before).

[JonnyAlpha]

 

just found this:

 

https://www.calverst...perior-quality/

 

any experience or info

 

You can get the same pistons here for about 1/4 of the price with a choice of rings

 

https://www.precisionintl.com/

 

 

Moke Spider - you have linked this web site before on a thread I started, the prices are good but I have found the web site virtually impossible to use? Really slow and very difficult to navigate or find exactly what you are looking for? I am trying to find 1275 +20s.

[cal844]

I know of a few horror stories like yours Cal, we have done a few 18 hour working days and 2 am finishes before meetings.... changing regs during a season is seriously wrong, they are bu***rs, but it their rules.

It's hard work now as I am sure you know, the regs are now really tight in an attempt to keep speed and cost down....but the cost saving doesn't work as you end up chasing small increases at huge cost.

Hillclimbing / Sprinting is best as the regs are so open...same engine block in same end of the car...the rest is free...simples, it could be argued that it comes down to budget, but if you know what you are doing the really big money boys can have red faces...love it.

I agree with the last part, after the engine rebuild it took us at least 3 meetings to get the car roughly back to where it was, then there's the small gains again

[Spider]

 

 

just found this:

 

https://www.calverst...perior-quality/

 

any experience or info

 

You can get the same pistons here for about 1/4 of the price with a choice of rings

 

https://www.precisionintl.com/

 

 

Moke Spider - you have linked this web site before on a thread I started, the prices are good but I have found the web site virtually impossible to use? Really slow and very difficult to navigate or find exactly what you are looking for? I am trying to find 1275 +20s.

 

 

LOL,,,, I find a lot of UK sites slow from here !  I think the string needs to be waxed and pulled tighter !

 

From their website (for the nominal 6 cc dish pistons)

 

Part No PAU127540201H Supplier Part No PT4RW23803-A020 Description STD 020 030 040 060 (set of 4) Rings not included Use PR1280 piston rings Compression height 1.528¨ -0.226¨ HYPATEC MINI 1275
PR1280 Details STD 020 030 040 060 (set of 4) Rings not included Use PR1280 piston rings Compression height 1.528¨ -0.226¨ Category Pistons OverSize   Brand Hypatec

 

That's for + 0.020, 1275 Pistons for a nominal 9.75:1 CR (same as the Cooper S was).

 

Price is $151.57 AUD (ex-GST) / set of 4, but that's without Rings

 

Piston Rings - Plain Cast Iron;-

 

Part No RS1280000CA4H Supplier Part No 6802 Description STD 020 030 040 060 1/16¨/1/16¨/1/16¨/5/32¨ MINI 1275 75-ON CAST RINGS Details STD 020 030 040 060 1/16¨/1/16¨/1/16¨/5/32¨ Category Piston Rings Cast OverSize   Brand Hastings

 

$83.19 AUD (ex-GST) set

 

 

Chrome Faced rings;-

 

Part No RS1715000CR4G Supplier Part No C1715 STD Description STD 0.047¨/0.047¨/0.047¨/0.156¨ *MINI 970/1275 CHROME RINGS Details STD 0.047¨/0.047¨/0.047¨/0.156¨ Category Piston Rings Chrome OverSize   Brand Grant

 

$70.32 AUD (ex-GST) set

 

As you are in the UK, you wouldn't be paying any GST

 

 

You can order over the web, but I'd suggest dropping them an email. Their head office email address;-  [email protected]

[Inno]

 

 

just found this:

 

https://www.calverst...perior-quality/

 

any experience or info

 

You can get the same pistons here for about 1/4 of the price with a choice of rings

 

https://www.precisionintl.com/

 

 

Moke Spider - you have linked this web site before on a thread I started, the prices are good but I have found the web site virtually impossible to use? Really slow and very difficult to navigate or find exactly what you are looking for? I am trying to find 1275 +20s.

 

yeap...noticed the same but since it is not Mini specialized store the easiest way is to chose car make....Morris....than a model but any 1275 engine model will do....after that you will get a list of parts available for 1275 engine. Clicking on any part from the list will open details and if you open pistons you need to open sub-menu to choose +20 or 40 or what you like....not user friendly from what we used to have at minispares type of the page but manageable.

 

Not too much parts there -  piston, gaskets, rings and only few more things.

 

 

I also found this:

 

price is the same to the penny, but mini oriented and more user friendly:

 

https://pypnap.ezime...4EKSNwj4euuEw==