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#1
07-20-2016, 08:43 AM
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LPI oil pumps
Got to pull pan for stuck(?)relief valve and will go with a new pump. Most likely the LPI pump from Luhn. My question is to go with a 60or80 psi pump? Only want to do once. I spin motor to 8 k at times.
Any thoughts ?
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 ECM member. 2008 Outlaw Pontiac Drag Series Champion MANDRA Do it now fool! Life is short. 69 Grand Prix/3163lbs / IAII 535 w/ Tiger heads by Gaydosh....9.35@ 144 so far..  through mufflers. 1.26 60'. Going back to track with pump gas engine.... My 60 Ventura retired to street/strip duty.. |
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#2
07-20-2016, 09:31 AM
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60 is all you need
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#3
07-20-2016, 09:39 AM
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Oil flow where its needed is more important than psi it flows at. Oils that are thinner at operating temps and with right clearances in motor may give you less psi with same pressure relief spring but greater flow. Run the 80 and watch distibutor gear for wear. Use a new pump rod marked in a way you can inspect for twist. Luhn pump/pickup looks best for in pan pump/pickup. Best option, IMO is dry sump.
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#4
07-20-2016, 09:56 AM
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LPI are awesome pumps and 60psi is all you will need
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EHTTFMF!  Being dead, it is not hard on you. You don't even know you're dead. It is hard on everyone else that is not dead. BEING STUPID WORKS THE SAME WAY! The rest of us suffer. |
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#5
07-20-2016, 10:35 AM
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Running a 60 here also.
__________________
65 Lemans Street Car - 521, T400, 3.70 9". 10.13 @ 135. 3770 lbs. Drag Week ‘14, ‘15, ‘17 63 Lemans Race Car- 8.81 @ 151, 5.60 @ 123(SOLD) 67 Bonneville ragtop 74 Firebird - 455, e heads, TK0600 in process |
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#6
07-20-2016, 12:40 PM
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60 pump here also. Very nice pump and top notch people .
John |
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#7
07-20-2016, 02:08 PM
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Call Mark at Luhn and he will set you up. Great people to deal with. 414-530-2704
__________________
 A new best of 9.135 @ 145.4171 Lemans Sport. 72 Lemans Sport. |
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#8
07-20-2016, 02:27 PM
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60psi is all you need....as said before....Marks a helluva good guy!
__________________
"You have to evaluate the past,Focus on the future,and that tells you what you have to do in the present"--Lou Holtz “It’s the process it takes to get to goals that sets us apart, the execution on every single play, one play,one life” Notre Dame Head Coach Marcus Freeman 69 GTO NHRA Super Street Car 2860lbs 10.890@157.08 MPH in Iowa in June’23 ,157.56 MPH in Gainesville in March ‘23 |
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#9
07-20-2016, 02:51 PM
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Ask Mark which of his pumps he'd use?
__________________
John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#10
07-20-2016, 05:26 PM
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60lb pump here, Mark is Great to deal with. The Best pump bar none
__________________
 Blown 4cyl's to the front 
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#11
07-20-2016, 05:49 PM
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What's the difference between an LPI pump and a factory style pump? Is it like a Titan?
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Tim Corcoran |
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#12
07-20-2016, 06:02 PM
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Quote:
You also are a east coaster guy so a call to Richie Hoffman would be a suggestion. People with the capability to very accurately track the oil pressure on the dyno, (like Richie Hoffman) say that the Luhn Pump oil pressure remains basically at the exact same pressure thruout the entire pull ROCK STEADY even at high rpm. Tom V.
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
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#13
07-20-2016, 06:28 PM
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If he wants a Luhn pump, I'd still take Luhn's recommendation.
__________________
John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#14
07-20-2016, 06:31 PM
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I did talk to Mark to get scoop on his pump. I just wanted some user inputs...especial from Pontiac's.. Big supply side should mean no cavitation..+ big suction pick up..
He also says he has a improved relief valve and at 60 psi there is less action at relief valve... I do have Richie's number..Is he a distributor? Thanks gentlemen.....Ahem..
__________________
ECM member. 2008 Outlaw Pontiac Drag Series Champion MANDRA Do it now fool! Life is short. 69 Grand Prix/3163lbs / IAII 535 w/ Tiger heads by Gaydosh....9.35@ 144 so far.. through mufflers. 1.26 60'. Going back to track with pump gas engine.... My 60 Ventura retired to street/strip duty.. |
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#15
07-20-2016, 07:26 PM
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I mentioned Richie because he was one of the first to use the Luhn Pump.
I have two of the Luhn Pumps myself, How many do you have John? The Mods Mark makes to the pump are all well thought out before hand which is why they work well. Also Mark built a Oil Pump flow stand to do some of the new "improved relief valve" design work he was investigating. Tom V.
__________________
"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
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#16
07-20-2016, 10:01 PM
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I am using the Luhn pump, installed by Richie Hoffman.
Pressure remains at 50-53 the whole way down the track. Traps at 7800. Lucas 20w50 dino oil
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1978 Pontiac Grand LeMans.......out next year Previous - 2001 Jerry Haas-built P/S Grand Am - former WJ car, Hoffman Racing 535" IA2, Tiger Heads/Intake, Single Dominator, PG Best ET: 7.776 @ 175.94, 1.096 60', 2375 lbs. |
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#17
07-21-2016, 11:00 AM
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I always ran an 80 pound pump. Spoke to Mark before I bought his pump and he set it up with a 70 pound spring. Great pump and the most stable pressure I've ever had.
Will be getting another for the spare motor. |
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#18
07-21-2016, 11:58 AM
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Quote:
I emailed them yesterday saying that I wanted to buy one of their pumps. Received a response right away asking for my shipping address. After I sent that, I got a email within two hours saying the pump had shipped, along with a fedex tracking number. A invoice and a SASE was also sent with the package, to send the payment. This has to be the first time that I have ever bought and received something online without paying for it first. Awesome company. Oh, they also sent a hat, a pen , and some LPI stickers
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 66 GTO, 495, M22, Strange S-60 w/4.10 Sold new at Ace Wilson's Royal Pontiac http://www.youtube.com/watch?v=cUHC-Z8xhtg |
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#19
07-21-2016, 01:38 PM
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COOL!
 
__________________
John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#20
07-21-2016, 01:59 PM
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You got a pen.
__________________
A new best of 9.135 @ 145.4171 Lemans Sport. 72 Lemans Sport. |
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