Do I need to replace the oil and water pump in a b20?
07-24-2002, 09:15 AM
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Do I need to replace the oil and water pump in a b20?
I'm getting ready to do my b20 with a vtec head sapw in my 92 hatch, I heard that I should replace the b20 oil and water pump with a gsr since the pumps will cool more during vtec. Is this true or can I get away with using the stock b20 pumps. what else do I need to replace when I do this swap in order for me to get my car running right?
07-24-2002, 09:50 AM
#2
Re: Do I need to replace the oil and water pump in a b20? (xaznx)
Coolant pump: I'd replace the B20 coolant pump (19tooth) with a any Vtec (22tooth) coolant pump. Keep in mind that you must use a B18C1 GSR timing belt with a 22 tooth coolant pump.
Oil pump: I used a B20 oil pump (looked up part for a MY 2000 CRV) which cross referenced to be the same as a Vtec oil pump. You may be in good shape to use your oil pump, but check out the clearances to be safe. Otherwise source a newer B series oil pump. **can anyone add to this, of at least verify that newer B series oil pumps are similar?**
[Modified by SLPR, 10:54 AM 7/24/2002]
Oil pump: I used a B20 oil pump (looked up part for a MY 2000 CRV) which cross referenced to be the same as a Vtec oil pump. You may be in good shape to use your oil pump, but check out the clearances to be safe. Otherwise source a newer B series oil pump. **can anyone add to this, of at least verify that newer B series oil pumps are similar?**
[Modified by SLPR, 10:54 AM 7/24/2002]
07-24-2002, 07:42 PM
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Re: Do I need to replace the oil and water pump in a b20? (SLPR)
Coolant pump: I'd replace the B20 coolant pump (19tooth) with a any Vtec (22tooth) coolant pump. Keep in mind that you must use a B18C1 GSR timing belt with a 22 tooth coolant pump.
[Modified by SLPR, 10:54 AM 7/24/2002]
[Modified by SLPR, 10:54 AM 7/24/2002]
07-24-2002, 08:48 PM
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Re: Do I need to replace the oil and water pump in a b20? (slooowDX)
are you sure about this? i just ordered a B16A water pump and i got a B20 timing belt for the B20/VTEC im building, so its necessary to use the GSR belt? anyone else kno about this?? thanks
teh B20B has a 19 tooth pump which is smaller diameter gear than teh 22 tooth pump gear...
so it would follw you need a longer belt than the B20 - hence the GSR.
t..
07-25-2002, 02:19 AM
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Re: Do I need to replace the oil and water pump in a b20? (tinkerbell)
what about the oil pump gear? is the B20B gear the same as a B18C? if so looks like i'll be having to return this belt 
[Modified by slooowDX, 11:20 AM 7/25/2002]
[Modified by slooowDX, 11:20 AM 7/25/2002]
07-25-2002, 04:30 AM
#6
Re: Do I need to replace the oil and water pump in a b20? (slooowDX)
The oil pump drive is the same size between all of the B series oil pumps.
Yes, you need the GSR timing belt. It is a tad longer than B16, LS, and CRV timing belts.
Yes, you need the GSR timing belt. It is a tad longer than B16, LS, and CRV timing belts.
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