sleeving a block and sleeves

[bradb16a]

I'm building my engine ....
and my question is in regards to sleeving a block
the reson for sleeving is i have a set of 87mm pistons... 12.5 to 1 and i have been told that i not a good idear to go plus 1mm over standard with out sleeves

so has anyone done it and how much did it cost ....
what sleeves did they use... cost...
who did it for them ...
Any recommendation

Thanks any help would help..:wave::wave::wave:

[GSi_PSi]

You are talking about K series right?. Your topic has no mention on engine application
might wanna update that.
not very good with K series , but 1mm over it should be okay...
but the compression ratio 12.5:1 over the stock 11:5...mmmmmm

If your talking about the K20A engine which has a very good rod stroke ratio (86X86mm = 1.62 or so)
i rekon it should be sweet without sleeves.. but ill let the K series guru's come in...

[Benson]

87mm is fine on stock sleeves

[TODA AU]

As above... 87.0mm is no problem... :thumbsup:
Done many times...
For best results, be sure to have the block bored & honed with a dummy head attached & bottom girdle in place.
Avoid decking the block if possible & only take the bare minimum off if you must,

[DR HONDA]

How reliable and how long would the motor last. Sounds like a short term build going 87mm on a 86mm bore.Will work well for a while:thumbsup:.

[DR HONDA]

I'm building my engine ....
and my question is in regards to sleeving a block
the reson for sleeving is i have a set of 87mm pistons... 12.5 to 1 and i have been told that i not a good idear to go plus 1mm over standard with out sleeves

so has anyone done it and how much did it cost ....
what sleeves did they use... cost...
who did it for them ...
Any recommendation

Thanks any help would help..:wave::wave::wave:

As for sleeving there is no machinist in Australia qaulified enough to do K blocks. Visit the ERL website as youd probably bring a block in for less than 3k.

[TODA AU]

How reliable and how long would the motor last. Sounds like a short term build going 87mm on a 86mm bore.Will work well for a while:thumbsup:.

Phil, is what you’re saying just based on speculation or actual evidence?
Bare in mind the wall thickness of the factory steel liner of the K20A remains thicker than that found in a standard K24A bore.
This remains true even when the K20A is bored out by 1mm to an 87mm bore.
I understand the overhaul limit in the engine manual states 86.25 as a limit,
But could so many piston manufacturers really get it so wrong?


As for sleeving there is no machinist in Australia qaulified enough to do K blocks. Visit the ERL website as youd probably bring a block in for less than 3k.

Out of all the machinists in this country…
You’re saying that not a single one could do the job…
Because they’re not qualified enough?
Really?

[Bludger]

Out of all the machinists in this country…
You’re saying that not a single one could do the job…
Because they’re not qualified enough?
Really?I think he meant a highly skilled machinist With the knowlwdge that you guys have with the K series engine.

You may have one or the other, but not both yet.

Thats what I think he is saying.

[mocchi]

speaking of boring, any thoughts of boring k20a to 89mm?
please explain your answer as to why?

sorry if this is hijacking thread, i find that the topic is similar.

btw, is the sole reason ppl increase displacement through stroking is because it's cheaper?

thanks.

[DR HONDA]

Phil, is what you’re saying just based on speculation or actual evidence?
Bare in mind the wall thickness of the factory steel liner of the K20A remains thicker than that found in a standard K24A bore.
This remains true even when the K20A is bored out by 1mm to an 87mm bore.
I understand the overhaul limit in the engine manual states 86.25 as a limit,
But could so many piston manufacturers really get it so wrong?



Out of all the machinists in this country…
You’re saying that not a single one could do the job…
Because they’re not qualified enough?
Really?

Adrian I dont want to get into a online debate with you or your crew. Build a K series as you see fit and if your happy with it and you can warrant it then thats fantastic.

Piston manufacturers dont get it wrong but if you look into most reputable piston manufacturers when it comes to sizing they do make special footnotes as to there recomendations of when sleeving is neccesary etc etc.

[dougie_504]

As for sleeving there is no machinist in Australia qaulified enough to do K blocks. Visit the ERL website as youd probably bring a block in for less than 3k.

I think what TODA AU is trying to say is that your comment should be something more along the lines of: "I haven't yet found a machinist in Australia who I consider to be qualified/experienced enough to do this particular work on K-series blocks" so as to rule out the risk of making a false assumption and instead making an informed hypothesis.

[DR HONDA]

I think what TODA AU is trying to say is that your comment should be something more along the lines of: "I haven't yet found a machinist in Australia who I consider to be qualified/experienced enough to do this particular work on K-series blocks" so as to rule out the risk of making a false assumption and instead making an informed hypothesis.

I agree with what your saying. Everything I post on this site gets nit picked to the comma.
Have searched for a K block sleever in AU. Can be done as to what degree is another point and you will be paying a fair bit of dollar to what your getting.
The point is if there is a demand in AU then im sure a Machine shop will cash in on it and perfect it. Supply and demand thats what it comes down too.

[TODA AU]

Adrian I dont want to get into a online debate with you or your crew. Build a K series as you see fit and if your happy with it and you can warrant it then thats fantastic.

Piston manufacturers dont get it wrong but if you look into most reputable piston manufacturers when it comes to sizing they do make special footnotes as to there recomendations of when sleeving is neccesary etc etc.

I know piston manufactures don’t get it wrong, I was being sarcastic.

Anyway, as the Oceania representative for one such reputable piston manufacture,
I can assure you there is no requirement to sleeve the K20A engine block when 87.00mm pistons are used.
What is strongly recommend, is the use of a dummy head when boring & honing the block to any size.
This is more a factor of tight piston to bore clearances (0.0008” ~ 0.0011”)
The OEM K20A sleeve thickness is not an issue at this size & clearance.
Moreover, it’s not an issue in the K24 which uses an 87mm bores as standard.
& these can be safely taken to 87.50mm without issue or compromise to reliability.
All the while with higher piston speed & longer stroke which is a known factor in engine wear.

As for your comments on machinists & installation of sleeves,
Fair comment, you’ve clarified your position there.

To others reading,
What should be made clear is that 87.00mm pistons in a K20A are generally regarded as the last oversize available when using factory liners.
That is, 87.00mm is the size that is widely agreed to be the reconditioning limit of the K20A.
I believe 87.50mm pistons could be used; however I have no data to back up the durability of their use in a K20A.
It is true these limits are well beyond Honda’s limits,
But, we’re not talking about stock engines here either.


+1 rep for Dougie the wordsmith, thanks.