Corksil

Heya i'm rebuilding/building a b20vtec. i have a 22 tooth vtec waterpump from my b16a3, is it okay to re-use it on b20?

i heard that cavitation can occur with a non-vtec waterpump on a b20. it has less teeth on the gear so it spins to fast and creates bubbles?

okay soo....
- okay to use b16 waterpump (22T) on b20vtec build?
- okay to reuse b16 waterpump? (no money, can change in next few months)

thanks so much guys

grumblemarc

iTrader: (4)

I would not reuse an old water pump. Even if it does fit.

94EG8

Yep, once they sit with no coolant they start leaking shortly after.

Corksil

i'm seein about 25 bucks for a new waterpump on ebay. more with a timing belt and tensioner. i guess i'll get the new b16 pump (right?) new b16 timing belt (right?) and new b16 tensioner (right?) aaaanything else come to mind (not including oil pump)

i might throw in a new thermostat and some gaskets for good measure. i really don't have the money for this, guess i'll keep eatin ramen for every meal. didja guys know that if you put ketchup on it and water it down it takes like beef spaghetti? glorious.....

thanks so much honda tech!!!

94EG8

I've put a lot of water pumps on a lot of honda's I wont buy one unless it's an OEM honda pump at this point. I mean if you're broke you're broke, but if it was me i'd wait till I could afford a real one.

Corksil

thanks, so an oem honda waterpump would be optimal. and it must be a vtec waterpump, so one with 22 teeth on it?

what is the most optimal pump ie which car does it come from. i will try to get an oem waterpump, but i want the best one made as far as performance.

i know there are often verrrry little differences in the parts from different cars, but these tiny differences can make a big impact on overall performance. any tips?

thanks so much.

nucman95

I've had new water pumps from the auto parts store leak a short while after installation, now I won't use anything but new oem pumps

0HPTautosport

OEM Honda/Acura 94-01 Integra GSR water pump

Corksil

OEM Honda/Acura 94-01 Integra GSR water pump... can anyone second this?

thanks dude.

i'll be puttin the first hundred miles on a used b16 waterpump i have. I SWEAR TO THE HONDA GODS NO MORE THAN 100 MILES!!!!

i just have to get the car across town to where i can store it until i can afford new oem stuffs.

thanks again!

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.

godluvstegs

What year is you car and what year is your b20 block?
i believe the belt you get should always be the one for the water pump you install.(type-r water pumps are the same price, just for reference). So you should be good. i agree with those who say to keep it oem when it comes to water pump and oil pump and timing belt. ive used an aftermarket timing belt and they never quite fit like the oem belts. just think a little more money a lot less headache.
are you installing all this yourself?

Corksil

the head is b16a3 from 94 del sol VTEC. (car chassis is same)
the block is b20z2 from 97 CRV.

right now i am mainly curious about the externals (p/s, a/c, alternator...) will those also be 96+ b18c belts? because i can save money and buy a kit with those belts.. thanks!

yes I am doing all of the work myself. here is my build thread if you're interested.
https://honda-tech.com/forums/honda-civic-del-sol-1992-2000-1/94-del-slo-b20vtec-build-thread-%5Bpics%5D-2789429/

94EG8

'97 - '98 CR-Vs came with a B20B.

Corksil

sorry it was a 99 crv block. post-obdii i didn't think it would matter to double check.

and it had 97k miles, not 1997 year. mixup.

right now i am mainly curious about the externals (p/s, a/c, alternator...) will those also be 96+ b18c belts? because i can save money and buy a kit with those belts.. thanks!

94EG8

Depends on what you use for components. What's this going in? A civic? Use the B20 A/C bracket and you can reuse the civic compressor, you'll need a CR-V A/C belt. P/S will be for a GS-R, Alternator will be a CR-V (although i'm not sure if there's any difference for the last one)

Corksil

okay here's the details. finally someone who knows what's up with this confusing sh!te..

car is - 94 del sol VTEC
head is - 94 del sol VTEC
block is - 99 CRV
A/C is - 94 del sol VTEC (have bracket)
P/s is 94 del sol VTEC (have bracket)
alternator is - 94 del sol VTEC (have bracket)

please help me match up what belts i'll need. sounds like you said...

a/c - b20 bracket, b16 compressor, CRV belt
p/s - b16 bracket, b16 pump, b18c belt
alternator - b16 bracket, b16 alternator, CRV belt

is this still correct? thanks so much dude, takin a day off from the wrenching to study this stuff i'm doin rly rly makes me more confident i'm not in too deep.

94EG8

Hmm, The only one that worries me is the P/S, Not sure how the deck height is gonna come into play here. I'm *guessing* GS-R belt, B16A is likely too short. B20 *might* work, but the original pump and bracket is a lot different than any other B-series.

Corksil

that's the kicker. i guess the motor was rolled around on the powersteering pump because i was going to use it (it looked smaller, less drag maybe) -- but i spun the pulley and it wobbled like the shaft was bent.

cant use the crv p/s :S

i have my b16 stuff still. i will test fit it on the block__(wait doesn't the p/s mount on the head?)___ hope the bracket and pump work out. if they do mount to the head, i'm not worried because it's b16 pump b16 bracket b16 head.

that just leaves the belt length. i don't think i got a p/s belt to test fit.

i'll report back, any suggestions?

godluvstegs

the belt isnt even an issue once you get the motor with the water pump oil pump and belt on then worry about the ac because that the next thing in the process that would be installed then worry about the power steering as long as the hoses fit and you dont run into anymore problems then worry about the belt size. just head to your local auto parts store and test them til it works ive done it before i test 2 belts and found i need the one inbetween the two then i was done.
use your stock b16 ps pump and bracket and see if it works cause it would all bolt up back to the way it did before with no problems

94EG8

There's actually 2 brackets, the upper mounts to the head (this has to come from a B16A/ITR/CTR IIRC. The lower one can come from any '94 - '97 Integra or Del Sol VTEC IIRC.

Corksil

excellent yeah will do.

right now i'm going to use my old b16 oil pump, waterpump, and tensioner. i've got them installed and RTV'd onto the block.

this project was started too soon, the person storing my car gave me a deadline and i just need the car running to get across town to park again til i can afford oem parts.

it looks like oem honda is...

hondabond - 14
oil pump oem - 108
timing belt water pump oem - 148
tensioner oem - 60

that totals up to $330 i don't have.

til then it's old b16 stuff just to drive the car across town. I SWEAR TO THE HONDA GODS JUST ACROSS TOWN!!!!

thanks dude.

Corksil

yes, two brackets, like the alternator on the back of the block. two brackets, just to make things more confusing in my massive pile of random barely labeled parts.

thanks, anything else coem to mind?

Corksil

alright. followup.

got all my parts. will be changing for oem when i have 330$ to spend. wont drive til then.

all b16 belts have worked on b20 block.

p/s
a/c
alternator.

just to clarify. pictures in my build thread for proof.