crxsi1

yes the b16a and b17a use the same block... basically a b17a is a stroked b16a.

crxsi1

b16a second gen:
displacement 1595cc (97.3 cu in) 1.6L
compression 10.4:1
bore 81mm (3.2in)
stroke 77.4mm (3.0in)
rod length 134mm (5.3in)
rod/stroke ratio 1.745, 1.75 considered best for high revs

b17a:
displacement 1678cc (102.4 cu in) 1.7L
compression 9.7:1
bore 81mm (3.189in) not sure why it says 3.189in instead of 3.2in like the other b-series
stroke 81.4mm (3.205in)
rod length 132.28mm (5.208in)
rod/stroke ratio 1.63

crxsi1

so as u can see i put up some specs... the b17a stroke is longer by 4mm and the rods are shorter by less then 2mm. im assuming the compression is lower on a b17a cause the pistons are domed diff and maybe the head is diff but thats besides my ordeal.

so u think that it wouldnt be safe to just use the b16a rods they're not even 2mm longer... it would be sweet if i didnt have to get b17a rods and get just the crank then my displacement would be even higher then a true b17a, i know not much im just sayin i can get it even closer to a true 1700cc

i really hate when they do that w the cc's i mean a 1.6 is pretty much 1600cc's(1595cc)
but the 1.7 whats that crap 1678cc's... couldnt they just make it a real 1.7 wateves though.

EG6 Master

Exactly right. The rods the OP will need are off the shelf rods from Eagle. They are 5.531 inch (140.48mm) H-Beam rods for about $325-340. Crower also makes a more expensive and lighter weight version that are 5.512 inches.

My point was......he would be increasing BORE and stroke over the B16A/B17A combo he is considering on going with. By placing the B17A crank in a B20 block, as opposed to a B16A block, he would increase displacement even more and maintain the B16As superior rod ratio.

JohnnyBoysHatch

What do you think about the set up? B18B1 Block, 18B1 Crank(Balenced),JDM B16B pistons, Eagle H-beam Rods(with 137 mm lenth). It will have a 13:1 c/r whichis fine because ill be running higher octane fuel with a 1.54:1 stroke or a stock b18b stroke. My question is here a better way to set this up what are a few other options and what do you think this set up would run like?

crx=si

those b16b pistons will not fit the b17 rods. The small rod ends will need to shave down thinner or open up the pin boss area on the pistons. Take the b17a rods, shave it down to the same thickness of the b18c rods (upgrade to arp rod bolts if you can). Buy a set of pistons for the 95mm stroker motor (pistons only). Get a b18c (gsr) crank, stuff all that inside a b16a block and you'll have a 1.8l

anothersickhatch

If you decide to go with the PCT B16B pistons, I wouldn't shave the rods to fit by yourself. I would recommend taking them to a machine shop so that they can be properly balanced. While you are at it, you may as well have them press the wrist pins as well and balance the rods and pistons together.

crxsi1

ya i know they gotta be shaved for thoughs pistons, 1mm is wat im told... and i would definitely bring it to a machine shop but i dont think im goin w b16b pistons anymore. b17a crank and rods with some after market pistons 82mm to 83mm havent decided. dont really want to get the block sleeved so probably 82mm, hear anything over 82mm is a good idea to get it sleeved. would really like to use b16a rods w b17a crank but cant find a solid answer if i can get enough valve clearance w a cammed head.... b16a rods r slighty longer than the b17a rods as i posted in a earlier post

crxsi1

to crx=si that is a crazy setup i do like it but i do wanna drive the car around town too...i start puttin that much power down im not gonna wanna drive it. all that money and time i start puttin into it. ha

but wat is this 95mm stroker kit and wat company do i go with... my curiousness is growing. lol
so ur saying a b18c (gsr) crank, which isnt the b18cr crank the same stroke so i could use that too, b17a rods w this 95mm stoker kit, the pistons only??? ive never heard of a 95mm stroker kit, that cant be the bore thats huge, maybe the stroke but thats huge too lol u gotta get back to me on this...

crxsi1

and i have a correction, u said 95mm stroker motor and not kit so wat company makes this 95mm stroker motor and wat kind of pistons r they... oversized, more domed, ect...

crx=si

the b18c (gsr) or the b18c5(type R) is the same crank in term of stroke, the type R crank is a heavier crank. You can use either crank as long it's not a b18a/b18b/b20 crank. The pistons are from 95mm stroker kit, when we talk about stroker it means increase displacement via the stroke, not the bore. 95mm stroker kit comes with different bores sizes, starting at 81mm piston bore (stock bore) then go all the way up to 85mm bore. I'd get 81.5mm, which is .020" over for your block.

Basically, you're running a b18c (gsr) crank in your b16a block. Stock B16a crank is 77mm stroke, and the b18c is app 87mm stroke. The increase stroke is app 10mm (87mm subtract 77mm = 10mm). The pistons now stuck out the deck 5mm (5mm out of deck + 5mm bottom of deck = 10mm). Now you'll need stroker pistons and with the 95mm stroker pistons, the wristpin location moved up 3mm. With the stroker piston, the pistons still out of deck app 2mm. The B17a rods happened to be 132mm, which is 2mm shorter than the b16a rods (134mm), and now the stroker pistons +b17a rods will flush with the deck. The reason I tell you this setup is because you can get the stroker pistons off the shelf and it doesn't have to be custom made. Now if you sleeve the block and bore it out to 85mm, then you'll have a 2.0l b16a, =0, happy hunting.

crxsi1

nice this is interesting.... do i have to notch the crank to fit correctly or does it just drop in...? and wat stroker company makes this kit or who would u recommend...

crxsi1

and i would probably go w 82mm seeing how thats the max before sleeving...

crxsi1

so i just tell the company that i want to buy from that i want the 95mm stroker kit pistons only and w the rist pin moved up do u know aprox wat i would need to shave off the rods so they fit...

anothersickhatch

Have you heard of or had any experience with this kind of build?

crx=si

the pistons are what you need. As for the rods, take a b18c gsr rod along with your set of b17a rods to good competent local machine shop; and tell them you want the set of B17 rod to have the same thickness as the b18c rod. They'll have the b18c rod as reference, big end and small end of the rods need to be shave down. Upgrade the rod bolts to the ARP units while you can, they will resize the rods when install the arp. Re-balance the rods as well.

crx=si

look at my sig

crxsi1

nice thanks for the info i will look into this

crxsi1

dude I looked at ur utube video of the b16 crx, alls i can say is dam!!! i dont know how anyone can talk **** about that setup but i guess u always get haters... and yes i would say he knows wat hes doin.

crxsi1

hey im just wondering, is that a world record for an all motor b16a... 11.29@121. to fast!!!!

crxsi1

and also didnt hear anything about the crank... so still wondering, do i have to notch it or does it drop right in... i only ask cause ive heard that u do. im really considering this setup and just want to get all the details for this setup... thanks man sorry if i seem like a nag

crx=si

the crank will drop right in without any notching. The only thing you might have to do is to notch the bottom of the sleeves to clear the rod shoulder due to shorter rods. You might not have to do this since the crank I'm telling you to use is b18c ( I used a b18a crank with custom pistons). You can use a die grinder with a straight tip bit to notch it. Other than that everything should fit like stock. As for the record at one point it was the record for b16 and it was the 3rd fastest all motor street car in the states, now I'm not so sure, I've been out of the all motor game for over 4yrs now and recently just got back in it. Check out my new thread.

https://honda-tech.com/forums/all-motor-naturally-aspirated-44/bringing-old-betsy-out-retirement-give-good-old-b-series-another-shot-2973380/

crxsi1

cool thanks man i will probably be askin u some more question down the road if u dont mind lol after all thats wat the forums for right.... b16a crx rules

nico1131

Thank you, i was looking for this information

What about the clearance with oil squirters ? Is there any mod' to do ?

Project-Honda

iTrader: (2)

I have a set of B17 rods and crankshaft if any of you guys are interested.