| Author |
Message |
Gary Snow
TryHard
Queensland
Soarer TT
Posts: 255
Reg: 04-2008
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Had a unusual problem with my built 2J in the Soarer, as you can see the new (10 meetings) oil pump exploded,have never seen it happen before in any engine. The pump was a brand new unit that was modified by a mob in the US and are in discussions with them now.Luckily it was shut down fairly quickly and didn't damage the head or crank,just a lot cleaning with some new piston ect.ect.
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Dan McColl
Goo Roo
Victoria (The Nazi State)
Pretty Red Thing and The Black Rattler
Posts: 3131
Reg: 07-2005
|
Damn.
I know the standard relief valve can't flow enough for extended high RPM use, and that causes problems, but I'm guessing that is what was modded in the pump you had.
Sucks to see this, though. |
Spencer Cameron
TryHard
NSW
JZZ30
Posts: 243
Reg: 04-2008
|
Thats random, exploding oil pumps are usually a nissan problem.. |
Gary Snow
TryHard
Queensland
Soarer TT
Posts: 256
Reg: 04-2008
|
Very random would like to know why though. |
Dan McColl
Goo Roo
Victoria (The Nazi State)
Pretty Red Thing and The Black Rattler
Posts: 3133
Reg: 07-2005
|
If it's not relieving quickly enough it will keep building pressure until it lets go. |
Aaron Casey
Goo Roo
nsw
'94 jzz30 gttl, 2 mini's one supercharged 
Posts: 3101
Reg: 08-2005
|
holy crap never seen that on a jz motor. how did they modify it? i know alot of people drill the return port and weaken the spring to have less oil pressure at high rpm? |
Gary Snow
TryHard
Queensland
Soarer TT
Posts: 258
Reg: 04-2008
|
Yeah Aaron they open out the return and alter the oil pressure, Putting in a new stock oil pump,new pistons,bearings and head gasket have been ordered. Have to fix it anyway,will be a bonus if they come to the party,just not holding my breath.But you never know. |
Andrew McKellar
DieHard
NSW
Soarer Sports Sedan (well, nearly)
Posts: 514
Reg: 06-2008
|
Time for a dry sump setup? |
Gary Snow
TryHard
Queensland
Soarer TT
Posts: 259
Reg: 04-2008
|
Normally not a problem with toyota engines,with nissan's you need a dry sump set up. |
Spencer Cameron
TryHard
NSW
JZZ30
Posts: 297
Reg: 04-2008
|
Hate to rekindle an old thread but I'm interested to know what did about that oil pump. Did you just use a factory one or another modded one?
I'm in the process of building an engine and supporting high rpm is fairly high on my list of priorities.. |
Gary Snow
TryHard
Queensland
Soarer TT
Posts: 365
Reg: 04-2008
|
Went with a stock genuine pump,the only reason they mod them is to stop the front seal blowing out but I never had that problem. |
Aaron Casey
Goo Roo
NSW
'94 2jz JZZ30 gttl, '93 UZZ31 track, VT, 2x Leyland Mini's
Posts: 3580
Reg: 08-2005
|
They drill out the return passage and either cut spring slightly or install a slightly lower pressure one as the oil pump generates alot of pressure at high rpm. Which can pop seals. |
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