B18 Connecting Rod Question CROWER & EAGLE

[rjudgey]

You have the 3 valve pockets to increase the CR ratio, if you have 4 it means you have one valve pocket increasing the volume on the crown of the piston which will lower you CR ratio especially as it's the exhaust one which is bigger than the inlet valve pockets. Might only be a small decrease but with all the rest of the pockets not lining up you'd have to remachine them bigger anyways so your paying to have it done anyways and also you'll loose even more CR ratio because your increasing the volume on the dish of the piston. Having them made with blank crowns is much better they may even do it a bit cheaper. Failing that just get the Diamond ones and maybe ask them just to do 3 valve reliefs and have the rods re-bushes for 20mm pins which are lighter than 21mm but then 21mm are stronger if your running boost better off with 21mm or extreme rpm 21mm is better but if you can have titanium ones made that should help increase reliability.

[bobafett]

lol good post man, but welcome to last year! jp, hehe

i am using eagle H-beam RODS in my a20. they are the part number from an LS integra. and you are exactly right, i had to have custom pistons made with a 21mm wrist pin.

it would be interesting to see if we could get b series pistons to fit, but chances are you are going to be buying nice forged pistons anyway, so you might as well order them with a20 specs and then get the right size pins installed.

from diamond racing, pistons, rings and locks were like 550 ish, and off the shelf rods for LS teg was around 300.

but still, its good to spread the word so that more people realize what is possible.

[rjudgey]

Thing is though i'm after a flat top piston with just 3 valve reliefs so i don't think Diamond will have that? And also i think the frictional losses on the B18 rings might be slightly better than A20 ones. Still not sure on what would be best i think i'll just have to get my engineer to sort it out but custom made pistons in U.K. cost a shit load so getting a B18 83mm piston with a blank crown and having my engineer machine in custom pockets would be a lot better and cheaper. Plus he wouldn't have to charge me for re-bushing the rods too as they'd be the same size.

[bobafett]

is pin height close enough to not throw off compression?

also, I don't know whether or not diamond would/could make a piston with only 3 reliefs... hmm who knows.

[guaynabo89]

lol good post man, but welcome to last year! jp, hehe

i am using eagle H-beam pistons in my a20. .

H beam pistons huh.....I need a set of those lol j/k

bujt yeah sorry. I guess I should have posted this info back when I found he board instead of waiting until now. lol just didnt search is all

but eah is this info in the faq somewhere though if not it should be.

I got my wisecos made for about 450 ten years ago and whre so pretty I didnt want to put them in. lol Nice full floating pins indtead of the pressed sock kind and all.

flat tops shouldnt be a problem with any piston manufacurer.

I still have the piston from my block that I sent in to hve mine custom made so if anyone local wants to compare a b18 b20 piston I could et them mesuresd up to find out if the pin eight is the same in te piston. or of someone wants to mail me one I'll get them measure up and find out.

[bobafett]

oops trying to type fast while at work and not reading heheh u know what i mean

[SQ is the SQUAD]

i though i cross referenced your part number to the starion rods, maybe i was wrong.

[AccordEpicenter]

i used crower b18b rods (ls rods) but my pistons have a 21mm wrist pin instead of the stock 19mm one. you might be able to get a custom set if you wanna reuse a stock pin size (why would you?)

[SQ is the SQUAD]

i used crower b18b rods (ls rods) but my pistons have a 21mm wrist pin instead of the stock 19mm one. you might be able to get a custom set if you wanna reuse a stock pin size (why would you?)

did u have to notch your block to use them?

[AccordEpicenter]

no

[MessyHonda]

no

so they are a bolt in?

[SQ is the SQUAD]

ummmm, i know someone who has some 85mm endyne rolerwave forgesd pistons and eagle rods. ha ha ha. i may have to borrow them.

my best friend is actually building his ls/vtec. i am talking crazy build. he has some eagle long rods but he was debating to use them or not, not sure if we can use "long" rods

heres his build
http://www.honda-tech.com/zerothread?id=1429424

[SiN360]

What integra rods can I use on a a20a3? I think they are lighter than the stock ones.

[LX-incredible]

These:
CRS5394A3D "ESP" H-Beam Connecting Rods $319.00
They don't seem to be lighter, but they are a lot stronger. There are others out there too, even titanium.

[ZackieDarko]

i have always been confused on this

does anybody know if it HAS to be these forged H-Beams or will ANY B18 (the "real" b-series) rods work?

[MessyHonda]

These:
CRS5394A3D "ESP" H-Beam Connecting Rods $319.00
They don't seem to be lighter, but they are a lot stronger. There are others out there too, even titanium.

can we use stock b-series rods?

[guaynabo89]

can we use stock b-series rods?

no

they use a larger wrist pin.

[MessyHonda]

no
they use a larger wrist pin.

we need a 19mm one right?

[AccordEpicenter]

Yes, but with an aftermarket piston with 21mm wrist pins or having the stock wrist pin holes in the pistons reamed out you should be able to use any b18A/B rod, including a stock rod. Stock honda rods are pretty good but the slight machine work to make another stock rod work in an a20 is just not worth it imo when you can get eagles for $300 ish when you consider the added strength and better fasteners in the eagles. Stock rods if used for any kind of performance build should have new rod bolts, have the big end resized, and shotpeened at least. All that stuff is not cheap.

[ZackieDarko]

so we can use ANY stock b-series rod if we had 21mm wrist pin pistons correct?

[AccordEpicenter]

only B18A/B rod, B16 and B18C1 and B18C5 use a different rod length and will not work

[ZackieDarko]

ah so they must be from an LS

im guessing the B17 GSR rods will not work as well

[AccordEpicenter]

correct

[MessyHonda]

alright...i was looking into this with some integra .080+ pistons...since they are 83mm bore. and it looks like an ok set up...or should we get custom pistons done. if im buying performance parts i would like a raise in compression since i plan on staying NA. trying to keep it a 150whp accord here.

[AccordEpicenter]

i thought the deck height was too different for those integra pistons, i would call diamond and get some forged pistons like i got, they were gorgeous.