What are the BIGGEST pistons you can put in a Type R block without having to resleeve the damn thing lol Im a cheap cheap bastard :

 

81.5

some guys feel lucky and try 82mm.......but those are custom pistons and to expensive for the "cheap cheap bastard"

do it right or dont do it at all.........

 

does anyone know what the cost is to resleeve a block for 84.5mm pistons and the cost to just bore out your block for some 81.25 or 81.5mm pistons...I wanna know what the price is ...if it's only 500 I'll resleeve the bitch and more than that FAWK it

 

sleeves are around $70-$100 per sleeve just a rough estimate and that's not installed, bore out your stock sleeves i think is around 70 bucks from your local machine shop and if you can do the install <gap rings, bearings, etc.> another 70 to balance the crank and flywheel...again these prices are from my experience and local shops...

 

sorry double posted... on me


[Modified by NAB20C5, 7:32 AM 2/5/2002]

 

81.5mm is fine 82mm if you are felling lucky

 

......$585 for GE sleeves if you get in on a group buy before March 1st... and I believe that's the good ones that post to the block...

 

I think around 83mm or so, the ribs start to show in the stock sleeves.

I'd feel fine running 82mm, which would make the motor 1841cc w/ a 87.2mm crank, or 1879cc w/ a 89.0mm crank.

If you got the cash, go for a sleeve. Go like 85mm or 86mm bore, use some headgasket spray and a Cometic gasket. It won't leak at all.

I'd recommend opening up the combustion chamber, though.

 

what's more reliable 81.25-81.25mm or a resleeved 84.5mm? or 85mm.....?
and does anyone have personal experience on the exact price difference between boring out and resleeving..including balancing and bearings etc...

 

It wouldn't be as far off from 2.0l as you would think. With an 84mm bore it won't be 2.0l, it will be 1932 compared to 1973 for using the B18B crank, so it' safe to say that 85 and probably 84.5 will round up to 2.0l when using a B18C crank.

I don't think you'd be at as big a disadvantage from a revvability standpoint by using a B18B crank, but I don't think it's worth replacing the stock one with it. Using a 95mm crank on the other hand...

 

how much does the boring out hurt the revablity comparing 82mm /w sleeve, to 84.5mm /w sleeve?

what would be the better one to get?

 

Some road racers bore B18 blocks out to 82 mm and they say that's safe for a normally aspirated high RPM engine. I've read that many make as much as 250-290 flywheel HP with their reverse rotation engines, so the blocks must hold up pretty good. Don Flores Enterprizes is one such engine builder and i respect his knowledge, as his engines have powered many winning road race Hondas for the last several years.

 

82mm is FINE. But you really cant go farther and you wouldnt want to run
any FI on it.

F20C injectors? Arent those a tad small??

 

Don @ DFE =

Real good guy.

Steve, F20C injectors are like 350cc I think.. but physically, they are small as hell. Not sure if they'd work.

 

350cc seems a tad on the small side to me.
I would go with nothing less than 440 with that kind of power output.

 

NA engines require more fuel and this is why.
To make the most power NA, a lot of overlap is required. As a result a lot
of fuel is blown straight through into the exhaust and wasted. Due to this
much more fuel is necessary to compensate.

Stock engines usually run 100% duty with stock injectors and thats with the
stock ecu. my 1.8L was seeing about 100% duty cycle with 310cc injectors
at 60psi.

And now you are talking about a 2.0+L that has a much greater power output
so it will require even more fuel.

 

Well, on my destroked B20.. I am running 310cc injectors at 52psi. My Hondata showed 99% duty cycle at 8975rpm. A/F was still 13.3:1, so I disagree with your statement. My displacement is 1847cc, so it's not necessarily a matter of engine size.. but engine efficieny.

 

That's true, but also keep in mind the difference in base fuel pressure, and the fuel maps. I HIGHLY doubt that the D16Z injectors get past 85% duty, especially on a stock engine.

 

Dragon: No offense, but I'll be trusting Steve/Mike/etc a hell of a lot more than your engineers.

 

True, fuel pressure on those 350s would be a key in deciding their effective "squirt" rate...


Jason

 

You never burn the entire mixture. That is a fact.

And butt dynos are never right.

 

hahah calling sgt clueless.... lol!

 

...no room for childish crap here... Sgt is a very respected member of this board... regaurdless of wheather you are right or wrong, you will be disrespected in this forum for flaming members who have proven themselves on and off the track... now, somewhat in your defense, NA Honda engines have made more power than yours with smaller injectors and less conventional tuning... but now I'm opening myself up for a good flame job as I won't back up that statement... so heed Zeus's words, and make your points with less attitude and more good information, or become one of the exiled many...

 

.

 

you sir, are an just plain uneducated... end of story.

D