B16B Block, what crank & rod to put in?

[udengfahlawi]

hattech
im asking on behalf of myself
where to get the brand new ford 83mm pistons with a good price? thx

wah....so honest one ler.....

 

[shiroitenshi]

wah, while i am out of commission so many nice discussions. have to get new modem. suprisingly, opera mini on mobile phone works quite well with zth.

Ok, now back on pc, lengthier reply now possible.

One thing about big stroke bad for rpm is cylinder bore sidewall loading.. the more severe, the worse the piston pushes on the wall at the bottom of the stroke.

The mat salleh does 9K with 89mm cranks by running good clearances on the bearings, which is why they plastigage everything when they mount the crank and crank bearings, and correct by polishing and bearing sizes.

One or two 'looser' bearings might be okay for normal rpm, but at very high revs, expect a lot of vibration. Something I believe causes some B20B blocks to prematurely fail is something call destructive resonance, due to the crank vibrating on the block.

But overall, the B series stock cranks and rods are quite sturdy, and can push higher rpm, but when people don't bother about crank bearing clearances, I guess it's natural that some blocks fail and some don't.

 

[wil_alastor]

just change all 18 bearings..king motorsport

 

[Zeroed]

But is the valve clearance for the ford's pistons suitable? also the resulted compression ratio...

The US fellas also use ARP rod bolts to fix the high rpm bolt stretch problem to increase bearing stability I heard. Seems like a lot has to go to a B20B build to make it reliable.. and even then fear will always be there? lol.

 

[dcloo]

b16b/b18c/b18b all can go up to 84.. 85 oso can if not mistaken. the only thing is u dare to do it or not...
block guard is a must then... but still will become very fragile..

mine considered mod with oil squitter, piston n rod balanced, type r block brace, type r oil pump, b20b crank, ford 84mm piston, internal vtec oil line, b16a bored 84mm head gasket.

but when u open the engine, the piston was hit top or ur head cause 1 of ur piston crack totally
so next time have to be careful when rebuilt ur b20b

 

[dcloo]

Wah... getting serious lah.......

One question pls... 11.6 C.R consider too high for hondas?
(use b16B piston with b18c crank n conrods)
Use to build mivecs at this spec....

Understand B16b has better rs ratio... but need to up the cc too so no choice.. SO cannot rev like motherf##ker lor but maybe still can sream like a pornstar.... lol

i'm running CR 13.8 for daily driving (100++KMH a day) so far so good
just u have to be careful of ur water temp have to upgrade to more bigger radiator to keep temp 85-95 on traffic jam
stock honda meter not accurate until 115 degree only will start move up(this was what happen on my own self at last have to replace head gasket)
u think what will happen on ur head n gasket when temp raise up to this high temp
if u still think not cool enough others choice was add on oil cooler
stock oil temp without oil cooler running at 5th gear 120 kmh on days time about 105-120
when u revving up hill like genting highlands 120-145 degree
after install 5th gear 120 kmh 90-105 degree
when revving up hill 100-120 degree
this will cool up ur engine n long lasting for ur engine oil lubricant

 

[shiroitenshi]

wah.. 13.8 CR.. I guess no need to ask about fuel consumption already oh.. :P
No wonder you were suggesting 30+ ignition advance.

Must be running a tad rich to compensate for that high a compression.

What FD are you running? 4.2? or lower?

 

[hattech-v]

Wah... getting serious lah.......

One question pls... 11.6 C.R consider too high for hondas?
(use b16B piston with b18c crank n conrods)
Use to build mivecs at this spec....

Understand B16b has better rs ratio... but need to up the cc too so no choice.. SO cannot rev like motherf##ker lor but maybe still can sream like a pornstar.... lol

b16b with b18cr crank n rod n pct piston will give u 12.0cr.
it will give u more power at high rpm.. n still u can high rev it...
with proper tuning n cam set properly..

 

[hattech-v]

hattech
im asking on behalf of myself
where to get the brand new ford 83mm pistons with a good price? thx

i can get for u. let me know if u serious, then i'll ask the price for brand new set.

 

[hattech-v]

But is the valve clearance for the ford's pistons suitable? also the resulted compression ratio...

The US fellas also use ARP rod bolts to fix the high rpm bolt stretch problem to increase bearing stability I heard. Seems like a lot has to go to a B20B build to make it reliable.. and even then fear will always be there? lol.

send it to machine shop. they know how to do it.. same goes to 85mm cf4 piston inside b20.

 

[hattech-v]

but when u open the engine, the piston was hit top or ur head cause 1 of ur piston crack totally
so next time have to be careful when rebuilt ur b20b

most probably because of the mechanical failure. n yes it maybe from the bearing clearance.. i also believe there is physical contact between head n piston that causing the piston to crack into thousand pieces...
the lesson is do not rush when building up an engine especially hybrid one...
and one more thing maybe i'm suite to 1.6 only laaa...

 

[shiroitenshi]

Heh.. actually if the B20 is street driven, I don't think it'll ever blow. It's the constant high rpm that kills it. I think there's still plenty of normal B20Bs on road that's still running because they don't go past that VTEC point very often.

Talking about piston to head contact, I've recently seen one unit with forged piston that got the 81mm head bore circle pounded into the piston.. can see the mark clearly.

Guess what? The gasket seal 'mampos'ed becaused the head bolts got stretched with all that pounding. Even if the piston can tahan, the head bolts cannot la.

That's why forged pistons paper all got the min 'recommended' clearance of .040" to .060" to head. Stock is about .035".

 

[hattech-v]

got picture for that?

 

[J101]

wait ppl say i ask on behalf of a friend ha ha ha

wah....so honest one ler.....

 

[udengfahlawi]

wait ppl say i ask on behalf of a friend ha ha ha

ok...faster buy lor...can still make it for final SDB 10 nov.....

 

[dcloo]

wah.. 13.8 CR.. I guess no need to ask about fuel consumption already oh.. :P
No wonder you were suggesting 30+ ignition advance.

Must be running a tad rich to compensate for that high a compression.

What FD are you running? 4.2? or lower?

normal driving petronas rm 65 = 300-320 kmh
if vtech killing 250++
for me its still ok cause just like driving b16a fuel consumption but 200++ whp feeling :P

for 30+ ignition advance have to pump shell vpower if not sure knocking kau kau

 

[hattech-v]

ok...faster buy lor...can still make it for final SDB 10 nov.....

agree2.... i can reserve for the registration....

 

[shiroitenshi]

got picture for that?

didn't take picture lah.. sorry.. owner frust kaw kaw you think I'd ask ah?

 

[simplycomplexed]

i meant b20b sleeves doesnt crack that easily compared to the other b series lar.. lol

but hor... stock wise, the b2ob CR is around 8.8:1 to 9.6:1 right?

haha opera mini rocks weh.

 

[hattech-v]

didn't take picture lah.. sorry.. owner frust kaw kaw you think I'd ask ah?

aiyaaa.... nothing to sad laa... its common la... nature of engine modification... haha