1uz oil pumps and forced induction

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ash

New Member
Messages
407
Location
qld
hi guys,
has anyone put a 1uz alloy block , with main caps fitted, into the hot wash , parts cleaner , to see what size the main tunnel grows too ??
trying to find out the clearance on max effort turbo engine, to set up oil clearances.. Thinking around 80-100 degrees setting on the hot wash.

also, is there any upgrade oil pumps around ??
ive been sceaching, but non found .

thanks
Ash
 

FoPar

New Member
Messages
413
Location
Sydney, Australia
hi guys,
has anyone put a 1uz alloy block , with main caps fitted, into the hot wash , parts cleaner , to see what size the main tunnel grows too ??
trying to find out the clearance on max effort turbo engine, to set up oil clearances.. Thinking around 80-100 degrees setting on the hot wash.

also, is there any upgrade oil pumps around ??
ive been sceaching, but non found .

thanks
Ash

go factory clearances, we went 1-thou over and lost oil pressure like crazy.

i can't speak for the UZ but i know my modular block was growing about 2-3 thou, 1-thou after just being outside in the sun not even a hot day 25c :D

upgraded pump sounds good, would like one ourselves.
 

ash

New Member
Messages
407
Location
qld
go factory clearances, we went 1-thou over and lost oil pressure like crazy.

i can't speak for the UZ but i know my modular block was growing about 2-3 thou, 1-thou after just being outside in the sun not even a hot day 25c :D

upgraded pump sounds good, would like one ourselves.


yes, its a shame that a high volume pump is not made for them...
having alloy rods, and alloy block the engine will expand like crazy..and lose heaps of oil pressure.

having a tight 'cold' clearance, and lose 'hot' clearance , makes for a carefull start up proceedure

thanks for input
 

FoPar

New Member
Messages
413
Location
Sydney, Australia
yes, its a shame that a high volume pump is not made for them...
having alloy rods, and alloy block the engine will expand like crazy..and lose heaps of oil pressure.

having a tight 'cold' clearance, and lose 'hot' clearance , makes for a carefull start up proceedure

thanks for input

pity they aren't like a modular pump, they can be ported out a little to make them high volume ;)

21122010094.jpg
 
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ash

New Member
Messages
407
Location
qld
yer,
if i cannot get some billet ones made, and or more volume, i'll have to take the external pump route
 

FoPar

New Member
Messages
413
Location
Sydney, Australia
yer,
if i cannot get some billet ones made, and or more volume, i'll have to take the external pump route

what sorta oil pressure are u getting? we run Brad Penn 15w40 on idle we are about 25psi when the engine temp is 200+. around 180 its 30-40psi, racing its up around 55psi.
 
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ash

New Member
Messages
407
Location
qld
70 odd passes in mid to high 6 second zone , @ 200 +
i admitt its a sbc, but just sticking with what works..

im putting spray bars in rocker covers, soo there will be plenty of 'leaks' with clearances, twin turbos , spray bars, pistpn cooling etc,etc
just have to make sure we have enough slippy stuff, to stop metal to metal contact
 

XR8tt

Active Member
Messages
2,761
Location
Sydney Australia
Yep I usually fit hi vol pumps..Even when some say not too...
Oil being bled off to turbo etc doesn't help..
Tight-sh mains clearance & good oil !!!...
 

ash

New Member
Messages
407
Location
qld
spare block going into hot wash this weekend...
assembled main caps..
will measure the growth from cold to hot
 

ash

New Member
Messages
407
Location
qld
what fuel are u running?

i think 80psi should be enough, 110+psi seems a fair whack too high but i suppose everyone does different setups.

when the hp / cube gets over about 6...its in the hemi blown alcohol range, the proven method of oil film on the crank has to be followed
 

Lexus94

New Member
Messages
18
Location
Australia
I ran a Blown SBC Methanol race engine for years and that thing had 125psi cold and around 85/90psi hot , Idle @2200rpm on 60W oil ,Never hurt a bearing in all the years I ran it , ran easy safe tune . because of the track (Townsville) still run 7.0 @ 203mph .
 

Turbo4L

New Member
Messages
204
Location
Sydney
I can supply upgraded oil pumps if you need, just send me over a pm. The have upgraded gears and supply greater flow and pressure.
 
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