daftdrifting

i installed a cnc ported ls6 hi pressure oil pump but didnt come with any springs. it was assembled and i put it on my 98 motor with 50k miles. i run the castrol germen 0w30 synthetic and at idle mine gets 28 to 30 psi, cruising on freeway its like 45 psi im scared to rev it up because my friend installed a hand ported ls6 oil pump hi pressure and at idle warm his is at 50psi and at wot its 80psi. he is running the same oil!!maybee mines not hi pressure ? oh wellm let me know what you guys think. thanks

I did a little research on my ebay and what i bought . i actually bought this
http://cgi.ebay.com/ebaymotors/ws/e...em=120049102943

dont say high pressure but it says Katech LS1 LS6 LS2 LM7 LQ4 LQ9 Blueprinted Oil Pumps

also i was reading about somone who just ported a ls6 oilpump themselves and there gained 5-20 psi just from that with stock spring. cruising 60psi wot 80! is somthing wrong with mine ?

Beast96Z

iTrader: (21)

You don't want to much pressure. If you have to much, all the oil will pump to the top end and not be able to drain back to the bottom under load. This will lead to a number of catastrophic failures. Some people think, "the more the better", but that is not true.

Black_98Z

iTrader: (13)

I think u mean high volume instead of high pressure.

daftdrifting

but still is 28 to 30 psi at idle seem ok ? the timing cover gasket set i got from felpro came with reusable water pump timing cover gaskets as well as front main seal, also 2 o rings for pick up tube. i read box ! 1 oring was for us model and 1 for some other model. i picked the one that looks most simlar to the stock on. the big green one i didnt use was to fat to fit in there right. if i use the wrong o ring would that cause like super crapy oil pressure ?

KONG

iTrader: (4)

I wouldn't waste money on a high pressure pump. A factory LS6 pump is all anyone should need. Its proven and reliable and cheap

iroc85blu

iTrader: (2)

28 to 30 is fine. Some old school big blocks that i no of run just fine under 20. The factory manual i believe says anything above 6 psi is normal.

vettenuts

iTrader: (4)

Katech is very responsive and a board sponsor, why not see what they say.

mailman2000

iTrader: (1)

where did you buy it from i had the same issue?

daftdrifting

bought on ebay straight from katech. i drove car again today cold on start up idles around 40psi with th 0w30 germen castrol synth oil. it seems cool! i dont have a tach but im shure its 10 psi per 1000 rpm with is a good rule of thumb eveyone is been saying! im going to call them right now i will let you know what they say!

daftdrifting

well just got off phone with katech he said the pressures im getting are just fine.

jermzz

iTrader: (18)

I wouldnt say thats definitly good, my hand ported stock ls6 high volume pump gets 45 warm idle. 28 seems low even though it's within GM spec. Especially for 50k miles. If it were me, I'd check it. If it's the same motor and a new pump, you should be getting atleast what you were before the new pump was installed. Jump on it in first and see if the pressure drops when the rpm climbs. I'm an oil presure freak, I watch mine more then I watch the road I think. I've seen tons of head cammed fbodies with ls6 pumps form all over and rarely one that is below 40psi warm idle. And if it is, it's usually between 35 / 40 with 70 - 80k on the clock with stock internals. I had a katech ls6 pump on my old motor which had 90k on it with H/C for 55k when i pulled it, it would get 37psi warm idle and jumped to about 58 cruising.

I know everyone always says things are fine in these kinda threads. Id be interested to see people post up who have a warm idle of under 30psi, and how long its been like that.

daftdrifting

its a 98 motor that i bought from a z28 camaro that i never seen running. I changed oilpump because i heard the horror stories of ls1 oilpumps failing without notice. so i dont know what pressure i would have had before.

jermzz

iTrader: (18)

how many miles are on it approx? Maybe it's time for a rebuild.

bczee

iTrader: (12)

I have a 99' LS1 pull out (Z28, over 50k on it).. I started it up after 9 month of sitting around and it has zero oil pressure and I shut it down. I replaced it with a stock LS6 pump and I have a warm idle of 58+ and High pressure of 80+( Off of my 0-80 VDO gauge)PSI.

daftdrifting

I talked to a engine builder at katech and he stated that with the ls6 oilpump you use the green o-ring. If i rev engine slowly and accellerate i have no issue but when i accell hard and fast the pressure dont build as fast and when i off throttle it builds pressure before it drops.!! i think im suckin air. i droping the pan to change rod bolts and the o-ring.

jermzz

iTrader: (18)

If you were sucking air, when you went wot the pressure would drop instead of going up. Mine used to do it when I was low on oil. The guage sucks, and if you go wot it might not catch up fast, but it should still spike before it goes back down. Id say your ok as long as the pressure isnt dropping when you go wot. Might as well change it if you're gonna be in there.

The mistake most people make when they put the o ring on is that they don't unbolt the oil pump from the block. It's hard to get the ring to sit right with the oil pump still bolted to the block.