Corksil

@MODS - THIS IS NOT A REPOST I HAVE DIFFERENT QUESTION THAN OTHER THREAD. THANKS!

hey i'm building a b20vtec i have b16 motor to take parts from.

i noticed the b20 oil pump has a crank position sensor on it and the b16 oil pump does not. i'm using the b16 oil pump on b20 block because i don't think the b16 wiring harness/ecu has the connector for the CPS. is this alright?

also.... the b20 crankshaft pulley for the belts is much bigger in diameter than the b16 crank pulley. which one should I use? I have both. if i use b20 crank pulley, do i use b20 belts for the externals? (id have to buy them) if i use b16 crank pulley, i use b16 belts right?

i'm tryin to keep costs really really low for now (i can upgrade in future)

if it makes no real difference which pulley (big or small) i use, what are the pros and cons of using bigger/smaller pulleys? (specifically the effect on a/c p/s performance vs parasitic drag..)

so....
- is it okay to use b16 crank gear/oil pump/no CPS on b20 block?
- which crank pulley (big b20/small b16) do i use for the belts and what belts?

thanks so much guys!

cruizinmax

iTrader: (2)

The CPS only really matters if the ecu that you will be running is going to look for it. OBD2 will be the only ecus looking for that sensor. As you probably won't be running any stock OBD2 ECU on a B20vtec the crank position sensor will not matter.

Use the b16 crank pulley for less parasitic drag. The b20 pulley is larger because the vehicle it came out of is designed to be used at a lower rpm. Revving to 8000 rpm with the larger b20 crank pulley will be harder on the accessories.

0HAMOTORSPORTS

Just to clarify for those reading, the sensor on the oil pump housing is not the CPS or Crank position sensor as posted above. It is actually the Crankshaft Fluctuation sensor.

To the OP, I'd suggest using the B20 oil pump and lower timing cover. The B20 oil pump is a stronger pump (it is the same as newer GSR and ITR pumps)

Corksil

sorry, i think i knew it was a crank fluctuation sensor from my "rebuilding b-series" picture book my momma gave me when i was 4. i get confused sometimes.

so the B20 oil pump is stronger than the B16. Is there any theory behind this? it looks like i'll need a new oil pump (b20 or b16) to do the rebuild right. ebay says about 70 for a vtec, 90 for a non-vtec crv oil pump.

i trust ya on this, im just trying to learn as much as i can about this motor i'm building so ill know what's up if anything goes sour.

what do you mean by stronger? just built better or does it circulate oil better or somethin? thanks for the shouts guys i really appreciate this.

and i'll just leave the CFC off so the wire isn't in the way or anything.

my car not possible without hondatech.

0HAMOTORSPORTS

It's a CKF sensor lol

And to clarify in more depth on the oil pump, all 99-00 civic Si, 96 up Gsr, ITR, and B20's use the same pump.

Corksil

alright so I will use a 96+ GSR Type-R OBDII B18C oil pump. Will this work?

http://cgi.ebay.com/ebaymotors/96-01...item3ca5f5bdb4


juuuust to clarify what i was sayin about the CKF sensor and oil pump differences...

here's the b20 oil pump, you can see there is added room around the bottom for the CKF and extra flange on the crank gear..


and here's the b16 oil pump, with less room around the crank gear because of no CKF..


back to business tho, is that oil pump i linked to going to work out? and I just leave the CKF off of it or disconnected....

thanks so much ht!

Corksil

buuump

Corksil

I will be getting the following for this b20 build as soon as i can afford it...

96+ B18C timing belt
96+ B18C waterpump and tensioner
96+ B18C oil pump

is that stuff gonna work? thanks.

aidx

how to differentiate between b20 oil pump and itr oil pump?
thanks

grumblemarc

iTrader: (4)

Start your own thread.