I stumbled across this article: http://dwolsten.tripod.com/articles/jan96a.html

It's primarily about the CRV siamesed sleeves, but there is a minor compare/contrast to regular non-siamesed sleeves, and pictures of each before the block is cast around them.

Hope tripod lets me link to this pic... if not, click here, or figure out which ------- one I'm looking at from the article:



Now, there is also a top view that is very revealing in the article, but this picture demonstrates the problem with Honduh sleeves. You notice how those ribs don't stick out any further than the topmost solid part of the flange? Meaning the sleeve is a lot less thick that it appears to be from a topside view, when installed in the block.

I'm wondering about inexpensive open deck sleeves, like the Darton units, into a D-series. They are thicker than the topmost part of the OEM sleeve to begin with. How much sleeve wall is required for a NA build? For boost (bigger bore means less combustion pressures for a given power level and less cylinder shift aka "head gasket problems")?

 

sticky

 

very good read

 

you interest my brain with these discoveries Jo.

 

Darton open deck sleeves are good for 79mm bore in a D-application, 78mm if you run the flanged sleeves.

79X94.4 = 1.85 liter D16. Hrm. Price at that point is *not* in line with what you'd get back, compared to B-series, but the sleeper factor means you could clean up at the streetraces.

 

My question all this time into imports, Why didn't honda ever really go with the closed deck. Money I guess

 

yeah but how much would you have to spend getting your hands on a 79mm d series forged piston, eek

 

heres a thought what about 79mm bore with d17 crank 97mm stroke =1.9l all in a d15b8 block how is that for sleeper.
Granted it would cost @3500 usd to do.

 

It's called F-series. You noticed Bisi making 400 hp/290 tq off gas, right?

D17 crank = 94.4mm stroke. 79X94.4 = 1.8 liter. Still...

Don Flores built an 81mm D16 for a guy - eek! Where does the headgasket find purchase to seal?

As far as the ~$3500, that's steep for what you get out of it... unless you consider the sleeper factor, and how you could recoup your money at the streetraces because no one saw the 180-200 whp D16 coming. Add 50-75 shot nitrous discreetly for maximum *** warpage.

 

I think the main focus on here regarding the d builds is simple. Bigger isnt better. The few d series motors that have made over 200hp that were actually run at events were Bisi and the old gude crx. One was a 1.5 and other was a 1.6 if they were tellin the truth. Headwork for the d is the key along with the cam combo.