Hey, I was going to build a d series, and I want to boost it and make around 300whp. I have wiseco standard bore pistons, and eagle rods. I need to know if I can hone the block to take out minor stuff, and still be able to use the pistons, and if I should get the crank turned so I have good clearances. It doesnt have any spun bearings, but I want it to have perfect clearance, I guess honda's are picky about that kind of stuff. Could I just get new standard size bearings and get the crank balanced and polished? I dont know what to do. Thanks guys, David

 

when i built my y7 i went ahead and had it sleeved and threw in some 78mm je's with the optional ceramic coating, pistons were not much more expensive than stock bore, and you can't put a price on peace of mind which i consider to be my sleeves. 300whp you will be fine without sleeves, i would go bigger on the pistons, machine work wont be much more expensive than just having it honed, i had my crank micro polished and balanced, i would also use arp2000 rod bolts but you will need to bring out the dremel and shave the block girdle because they will not clear!

 

oohh, I didnt know I have to shave some of my girdle. Do I have to shave some of the block too cuz of these eagle h beams? I dont want to buy new pistons since I have the 75mm already. i just got the block today and the cylinders look great, and the crank is in good condition. Can I just get new stock size bearings and get the crank micropolished and still have good clearance with the bearings? I have a question: I have no idea how many miles this motor has on it, but lets just say it has 200k on it. The cylinders will be slightly bigger from the rings rubbing up on them right? Will the new rings in my new pistons expand and make up for that extra space where the old rings expanded? I have always wondered if I can just get a motor honed and put new pistons/rings in it and have them seal right. Did that make any sense? Sorry about the noob questions. Thanks, Dave

 

anyone?

 

I would recommend checking bore size and piston size to make sure you have the correct piston to wall clearance which should be somewhere around .003"-.0035". I would also recommend checking the bearing clearances and make sure your in the range that the honda oem manual states. More than likely standard sizes should work but its always nice to know that your building a motor to standard specs. Let me know if you have anymore questions.

 

you will have to notch your block as well

 

Stock sleeves... Eagle or TT rods... Vitara 75.5mm pistons... 400whp all day son.

 

well I got the rods and pistons for really cheap, so thats what I'm runnin. So you think that I can just buy some new standard size bearings and just plastigage it and see if it all comes out to spec? Should I get the crank balanced, or do anything else to the bottome end before I put it together? Thanks, David

 

Its all up to your preference. I balanced everything and measured everything. I had my crank balanced and micropolished. If you have the time any money its well worth it and it shouldn't cost a whole lot. I think I got all machine work and balancing done for about 300 bucks(bore, hone, balanced crank, pressure plate and micropolish). I guess it just depends on your goals and future plans. Just my .02 cents.

 

I just built a d series motor and I can tell you that you can't just slap things together without triple checking all your clearances. even if you bought std bore pistons, your sleeve might be worn down a little. I suggestions is to buy some 75.5 mm bore pistons and get the sleeve bored out to the correct specs. If you do decide to keep your pistons and the clearances is too big, you will run into piston slap. all your bearings should be plastigauge or some other form of measurement before final install. Figure out your bearing colors and go from there, just change the bearing colors as needed to the correct clearances. you don't need to do anything for your motor to run but keep in mind that the more you do (balance, hone, micropolish, etc) will utimately decide how your motor will run and last.

-J