is the H23a a wet or dry sleeve?

 

its a closed deck

 

There is no water jacket in the sleeve if that is what you mean.

 

how much should it cost to resleeve a H23a block?

 

around $1000 parts and labor....more if you get better sleeves...could easily be $1500

 

Uh na. It really depends on which sleeves you get. I got LA Sleeve Co 3/32" sleeves and they were 510 to install BUT that includes: an overbore and a hone, balancing of eveything, and a line bore check. The sleeves themselves were about 25 ea. If you get a sleeve that has a flange to it (ie not the same diameter top and bottom) your install and actual sleeve costs will spiral skyward.

 

so what sort of sleeve should I get for a H23a that I am planning to go about 10-15psi in?
I was quoted around $130 USD to resleeve. Thats just the parts and labour of the guy doing the resleeve, I am just dropping my engine to him, he's not pulling it out of the car.

can you get aftermarket sleeves for your car? or fabricate new ones? Is it necessary, considering the only reason I am doing it is to protect the engine?

can different sleeves give gains in power?

 

Any sleeve is an aftermarket sleeve. You need to resleeve it if you plan to use forged pistons. It would be a good idea to replace the pistons with forged ones because they will handle the power better. Sleeves do not give any power themselves, just give you the ability ro use forged pistons which let you use higher boost or more nitrous.

 

i got 88mm sleeves pressed into my h23 from Golden Eagle for $850 plus shipping, they look beautiful

 

So I'm actually getting JE 9:1 pistons... is there a specific sleeve thickness I should go for or is it "one size fits all"?

 

There are various sleeve thicknesses, 1/8" 3/32" 1/16" there are thicker ones but they become very costly to put in. A sleeve bigger than 3/32" will be fine. Check out http://www.flatlanderracing.com that is where I got mine. At the top click "imports" then "Honda" then "cylinder sleeves" then then "LA Sleeve cylinder sleeves" You'll see it says 87mm bore, that is just telling you what the bore of the sleeve is to start it is not the max that it can be bored to. I have the 3/32" bored .020 over.

 

so in effect, resleeving creates a 'tighter fit' for the aftermarket piston, which means more efficient combustion?
let me know if I'm on the right track here, cause I am really struggling to understand this...
if this is so, wouldn't I have to use the same thickness as my stock sleeve? cause the bore diametre of the JE piston is the same as the bore of a stock piston?
If I thicken the sleeve doesn't if restrict piston movement?
think I am getting myself lost... i will just ask for my machinist to do a 3/32" (iron??) sleeve. that will be fine running these JE pistons and up to 15psi won't it?

 

resleeving makes you able to use forged pistons.

stock sleeves wont handle forged pistons because of their FRM coating.

 

how does thickness come into it then? what difference does it make?
sorry if I am sounding stupid here, but by the looks of the number of people following this thread, there must be a lot of people out there who would like to know about this!

 

Ok thickness of metal. You have a tube with a hole. The hole is 87mm. The tube can use thick metal or thin metal and still have the same size hole. The 3/32 or 1/8 is the thickness of the metal of the sleeve, the bore does not change.

 

ok, so everyone has said that you need new sleeves to run forged pistons, EXCEPT the mechanic that i just tried to get a quote off... he said it was NOT necessary, and basically made me feel like a complete retard.
so why DO i need to resleeve to use forged pistons?
the only things i can think of are...
its a silicone bore engine?
cly walls are too thin?

and is the h23 an alloy block?

PLEASE HELP ME! this guy basically called me an idiot, and I had nothing to back up why i needed to resleeve... I want to get more info so I can go back and give him ****!

 

Your mechanic does not know what he is talking about unless he is trying to tell you to using the new wiseco pistons made to run in a FRM cylinder wall. If he isn't talking about this type of piston, get a new mechanic...

FRM stands for fiber reinforced material and if you run a Forged piston with this type of material your sleeves and pistons will gum up with each other and leave you with nice scars inside of your cylinder walls. I have not heard of anyone running the Wiseco's yet, last I heard wiseco still recommended running a side skirt coating on their FRM compatible pistons since the side skirts of the H series motor were hard to manipulate.

If you want your block sleeved, I highly recommend the following companies:
Darton
Benson's
Golden Eagle

It should run you around $800-900 bucks WITH the sleeves plus a little for shipping. There is a kick *** machine shop here in Charleston, SC and if you are interested I can talk to my machinist to see how much labor and shipping will cost you. You are looking at roughly 400ish just for the sleeves though. While you are at it I would recommend O-ringing the sleeve. Using a copper O-ring gives you a better seal

p.s.
If your mechanic still gives you ****, have him call up a reputable honda mechanic and they will tell you the same.

 

These came from a post here not to long ago but this is what will happen with your pistons if you don't sleeve the block for forged pistons.



Here's what happens to the sleeve walls.

 

I have been following this as well, good thread

 

thanks for taking your time to show illestrations and such/

 

Here is a pic of my block with LA 3/32" sleeves and JE 11.0:1 flat top pistons.

 

Thanks Gude,
I talked to the mechanic, and made him feel like a total dumbass!

Where is the best place to get those sleeves from? Unfortunately I don't live in the US, so getting to your machinist could be a bit of effort! unless he can just sell thesleeve and ship it to me?!
Ok, so is one of those companies better than the other? I don't consider my plans to be high-performance, so I'd like to work on a bit of a budget... or are they pretty equal.
how much do the copper o rings go for?

 

well if u wanted to buy just the sleeves, you can go with rsmachines. They sell them for 300.

 

can anyone give me the address of an online shop that sells sleeves?

 

I got mine from http://www.flatlanderracing.com I think they were 18ea