Schumanns Sale LSX oil pumps
12-24-2010, 09:37 AM
#1
Schumanns Sale LSX oil pumps After a trip to Indy a few weeks ago at the IMIS show in search of a answer to LSX oiling issues I talked with Robin Larwance of Holley. I have known Robin for years and explained what I was looking for. He sent me over to Vern Schumann's booth. I spent about 40 min with Vern and Tim of the Car Shop Inc.
After talking with a few other vendors and engine builders. I was told that a $2000 dry sump was needed for a 7000 rpm drag/street motor.
I asked Vern and Tim that same question and got a totaly different answer. They showed me the pumps they have been working on. 12 things they are doing to the pumps.
bypass valve is a check ball
external bypass rather than internal
o-ring on the block connection
porting the inlet
replacing the o-ring on the pick up with a two bolt flange
replacing the pick up inlet screen with a 88% flow
There were also internal things they are doing with the rotors and housing.
Also the big thing is they have a kit to alighn the pump to the crank. .015 of slop in the bolts only .003 in the pump. see a issue here.
I just recived the pump today
This is all the parts I recived with the pump.
When I installed the prior pump I asked the manufacture about the pump alighnment and was told it was not critical, Had issued with the oil pressure going over 100psi was told that was not a concern, the seal the block was told that also was not a issue. After talking with Vern and Tim they explained why all these things were critical.
Give Tim a call for more info about the Schumann pumps.
Tim
After talking with a few other vendors and engine builders. I was told that a $2000 dry sump was needed for a 7000 rpm drag/street motor.
I asked Vern and Tim that same question and got a totaly different answer. They showed me the pumps they have been working on. 12 things they are doing to the pumps.
bypass valve is a check ball
external bypass rather than internal
o-ring on the block connection
porting the inlet
replacing the o-ring on the pick up with a two bolt flange
replacing the pick up inlet screen with a 88% flow
There were also internal things they are doing with the rotors and housing.
Also the big thing is they have a kit to alighn the pump to the crank. .015 of slop in the bolts only .003 in the pump. see a issue here.
I just recived the pump today
This is all the parts I recived with the pump.
When I installed the prior pump I asked the manufacture about the pump alighnment and was told it was not critical, Had issued with the oil pressure going over 100psi was told that was not a concern, the seal the block was told that also was not a issue. After talking with Vern and Tim they explained why all these things were critical.
Give Tim a call for more info about the Schumann pumps.
Tim
12-24-2010, 11:09 AM
#2
On The Tree
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I asked Vern and Tim that same question and got a totaly different answer. They showed me the pumps they have been working on. 12 things they are doing to the pumps.
bypass valve is a check ball
external bypass rather than internal
o-ring on the block connection
porting the inlet
replacing the o-ring on the pick up with a two bolt flange
replacing the pick up inlet screen with a 88% flow
There were also internal things they are doing with the rotors and housing.
Also the big thing is they have a kit to alighn the pump to the crank. .015 of slop in the bolts only .003 in the pump. see a issue here.
BTW, O-rings are a far superior way of sealing than gaskets. If I never see another gasket in my life I will be very happy.
12-24-2010, 11:18 AM
#3
Take the cover off one of these pumps and slide the pick up in the pump and look what the porting you did to the pump does with a stock pick up and o ring set up.
The pan is a issue also. I have the moroso $600 pan. No lifter trays, restricted push rods. The screen on all the pickups you buy is a joke no wonder people have issues.
areation of the oil in the pump with the intenal bypass is a issue also.
The pan is a issue also. I have the moroso $600 pan. No lifter trays, restricted push rods. The screen on all the pickups you buy is a joke no wonder people have issues.
areation of the oil in the pump with the intenal bypass is a issue also.
12-24-2010, 01:31 PM
#5
FormerVendor
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we've ran the melling oil pump to 8500 with no issues.
i've looked at the Schumann pump, i really don't see how what he does can make a substantial difference. The last thing is if your going to run a screen with 1/4'' holes,why run one at all?
i've looked at the Schumann pump, i really don't see how what he does can make a substantial difference. The last thing is if your going to run a screen with 1/4'' holes,why run one at all?
