problems with 604" predator motor
#794789
09/06/10 09:19 PM
09/06/10 09:19 PM
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Joined: Aug 2010
Posts: 73 Hartford,MI
goody340g
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Hartford,MI
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Hey guys i've been out of racing for about 6 yrs but starting to get back into it, and after i stopped racing my dad built a 604" predator motor. He had a local guy build it (kalamazoo,mi), we never had any problems with him in the past, but we put this motor in the car and when u first started it it had oil pressure(20-30 lbs i think, it was about 4yrs ago so can't exactly remember) then when it warmed up no oil pressure. took back to the builder, tore it apart, put it back in, and same thing. so we take it out and take it to muscle motors, they find a couple small things they didn't like but nothing to do with oil pressure, we put it back in car and same thing no oil pressure. so my dad gets mad and buys a 622" indy and there the predator has set on the shop floor for about 4 yrs. has anybody ever had a problem like this. i think we need a new block, but all the parts were brand new (raised cam mega block). kinda sucks to buy another new block when nobody is sure of the problem. any ideas?
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Re: problems with 604" predator motor
[Re: Dragula]
#794791
09/06/10 09:30 PM
09/06/10 09:30 PM
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Joined: Mar 2004
Posts: 528 Oak Grove, MN
lowflyingdart
mopar
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mopar
Joined: Mar 2004
Posts: 528
Oak Grove, MN
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Check the lifters,they can uncover the oil galley if the lifter bores are not bushed. This usally happens at max lift, the window for the roller can uncover the oil galley and you will losse oil pressure.
"I have not failed. I've just found 10,000 ways that won't work."
Thomas A. Edison
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Re: problems with 604" predator motor
[Re: StrokedW7]
#794793
09/06/10 09:57 PM
09/06/10 09:57 PM
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Joined: Aug 2010
Posts: 73 Hartford,MI
goody340g
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Quote:
Just out of curiosity... Who in Kalamazoo would you trust with a Predator motor?
Randy Rutgers. He built our 511 B1 and 498 Indy motors and we never had any problems with him. and at first we were pissed, thats why we took it to muscle motors. we thought they would fix it no problem. not the case. I don't want people to think i'm trying to bashing either of them. i just want to get it fixed, it makes me sick to see it just setting there.
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Re: problems with 604" predator motor
[Re: Dragula]
#794794
09/06/10 10:05 PM
09/06/10 10:05 PM
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Joined: Aug 2010
Posts: 73 Hartford,MI
goody340g
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Quote:
There are a lot of places the oil can go....
Are you in possesion of it right now? If not, then you need to resolve that first.
With that said, put it up on a stand and get a drill motor out and spin the oil pump. With the valve covers off, see what's going where..If nothing unusual, the remove the valley tray and take a look there.
it is sitting on our shop floor. i'm pretty sure we did all that before but ur right it would be a good starting point now.
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Re: problems with 604" predator motor
[Re: tjmarcus1]
#794796
09/06/10 10:13 PM
09/06/10 10:13 PM
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Joined: May 2005
Posts: 6,446 NJ-USA
HPMike
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NJ-USA
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Quote:
i am really surprised that MM didn't find the problem!!!! was he aware of the oil pressure prob.?
I would have thought that an engine of this type would HAVE to have been sorted out on the dyno before leaving the shop.
MB
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Re: problems with 604" predator motor
[Re: tjmarcus1]
#794798
09/06/10 10:16 PM
09/06/10 10:16 PM
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Joined: Aug 2010
Posts: 73 Hartford,MI
goody340g
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Quote:
i am really surprised that MM didn't find the problem!!!! was he aware of the oil pressure prob.?
yes, that was the reason we took it to them.
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Re: problems with 604" predator motor
[Re: goody340g]
#794799
09/06/10 10:20 PM
09/06/10 10:20 PM
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Joined: Sep 2008
Posts: 2,840 Flint, Michigan
B1Fish540
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Flint, Michigan
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Quote:
Quote:
i am really surprised that MM didn't find the problem!!!! was he aware of the oil pressure prob.?
yes, that was the reason we took it to them.
Thats unacceptable..whats wrong with Mike, anyway..shheesh...
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Re: problems with 604" predator motor
[Re: HPMike]
#794800
09/06/10 10:30 PM
09/06/10 10:30 PM
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Joined: Aug 2010
Posts: 73 Hartford,MI
goody340g
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Quote:
Quote:
i am really surprised that MM didn't find the problem!!!! was he aware of the oil pressure prob.?
I would have thought that an engine of this type would HAVE to have been sorted out on the dyno before leaving the shop.
yes i would agree with you we should have put it on the dyno. i think my bro. and i wanted to but pops didn't want to. maybe i can talk him into it this go around. MB
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Re: problems with 604" predator motor
[Re: keelsracing]
#794802
09/06/10 10:41 PM
09/06/10 10:41 PM
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Joined: Jun 2009
Posts: 644 Minnesota
Barnstorm
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Minnesota
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I'll send the truck tomorrow. I've gotta run 8.50's for our Rotten Bros. annual....seriously it's probably something simple..2 engine builders see nothing wrong?
The little old lady from Pasadena is back!
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Re: problems with 604" predator motor
[Re: goody340g]
#794803
09/06/10 10:42 PM
09/06/10 10:42 PM
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Joined: May 2007
Posts: 1,443 Maryland
Dads426
pro stock
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pro stock
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Posts: 1,443
Maryland
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A friend had a similar problem (low pressure) with a World block, although it can happen with any block; the oil passage from the galley to the main journal was drilled incorrectly, or the casting had an inclusion where the oil under pressure was escaping in the crankcase. The only way to find it was to put it on a stand and lube it with a drill, pan removed and a remote oil resevoir to see where the oil was going.
If the valvetrain checks out and there are no blocked oil passages, that would be my next step. BTW, they heard of two occasions where an internal leak from a bad block caused low pressure.
2012 422 Allstars NSS Champion 2013 422 Allstars NSS Champion 2014 422 Allstars NSS Champion
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Re: problems with 604" predator motor
[Re: Dads426]
#794804
09/06/10 10:44 PM
09/06/10 10:44 PM
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Joined: Dec 2009
Posts: 242 Upland, California
Spode
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Upland, California
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heck if its just sitting there holding a door open ill pay for shipping if you dont want it LOL
Last edited by Spode; 09/06/10 10:44 PM.
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Re: problems with 604" predator motor
[Re: Spode]
#794805
09/06/10 11:01 PM
09/06/10 11:01 PM
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Joined: Dec 2007
Posts: 10,542 BROOK PARK, OH
WILD BILL
Senior Member of the Junior Dragster Club
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Senior Member of the Junior Dragster Club
Joined: Dec 2007
Posts: 10,542
BROOK PARK, OH
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Quote:
heck if its just sitting there holding a door open ill pay for shipping if you dont want it LOL
To heck with shipping, I'll come pick it up
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Re: problems with 604" predator motor
[Re: keelsracing]
#794807
09/07/10 09:33 AM
09/07/10 09:33 AM
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Joined: Aug 2010
Posts: 73 Hartford,MI
goody340g
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Quote:
sorry this may be a dumb question but have to ask this is a raised cam block so how is the oil pump driven and what/whos pump is it?
we tried stock and indy pumps, and they are driven by the dist. gear
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