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#1
fixed oil/water setup t25 to a14
supafatto
Posted on: 2010/7/15 13:26
how have people run water/oil feeds/returne lines for turbo applications on a series motors??
#2
Re: help needed oil/water setup t25 to a14
ssskiwi
Posted on: 2010/7/15 13:55
The one I parted out was running the oil feed from a Tee at the oil pressure switch, return welded into the side of the sump.
Coolant was returned to a fitting welded to lower radiator hose pipe and taken from another fitting screwed into the head at the secondary temp sensor boss. So should have +ve pressure at head and -ve at lower rad hose to provide flow.
#3
Re: help needed oil/water setup t25 to a14
estyre
Posted on: 2010/7/15 14:01
does it matter what way the water flows through the turbo and has anyone got any pics of there turbos mounted as im not sure about the position that mine is at
#4
Re: help needed oil/water setup t25 to a14
sikyne
Posted on: 2010/7/15 14:04
On some A series engines there is a water gallery in the block just behined the engine mount. This is where i picked up water from. For the qwater return you will have to go to the suction side of the water pump. There is usually a heater hose atachment on the steel tube that the bottom hose goes on, T in there somewhere.
For oil pressure you will have to T into where the oil pressure switch goes. I highly recomend you not use brass for this as ive had them crack from engine vibrations + the weight of the oil pressure sender and turbo feed line. The best setup is to run flex from the oil pump to a block mounted to the skirt somewhere and then flexable line to the turbo. the oil pressure switch gets mounted on this block. The oil drain tube in the sump must be located higher than the oil level. It can be done while the engine is in the car by sharpening a steel rod of about the diameter of the tube you intend to use. shape it like a like a pencil and then grind 4 flats on it (a bit like a very sharp church spire). Use a hamer to drive a hole above the oil line in the sump, rotating the sharpend rod as you go. Doing it this way you wont get any swarf in the sump as the metal just folds back inside the sump. Then weld in your piece of tube. Sound a bit rough but ive done this several times and is the way Saffari turbo kits are fitted at autherised instalers. In an ideal world the sump would be taken off. Hope that helps.
#5
Re: help needed oil/water setup t25 to a14
ssskiwi
Posted on: 2010/7/15 14:05
Generally good practise to have the coolant enter at the low point and leave at the high point, that way flow is assisted by natural convection? i.e. hot water rises..
#6
Re: help needed oil/water setup t25 to a14
supafatto
Posted on: 2010/7/15 14:12
has anyone got some pics to explain this or of there setup would be handy
thanks nick
#7
Re: help needed oil/water setup t25 to a14
ssskiwi
Posted on: 2010/7/15 14:18
You can see the coolant fitting on the head in this shot:
http://datsun1200.com/modules/myalbum/photo.php?lid=21769 The coolant return in lower rad pipe in this: http://datsun1200.com/modules/myalbum/photo.php?lid=21777 And the turbo fittings in these: http://datsun1200.com/modules/myalbum/photo.php?lid=21765 http://datsun1200.com/modules/myalbum/photo.php?lid=21764 Not very good pics but hopefully you get the idea..
#8
Re: help needed oil/water setup t25 to a14
supafatto
Posted on: 2010/7/15 14:37
also what fittings and line have people used and where is the best place to get them.
thanks for all the helpful info ppl :)
#9
Re: help needed oil/water setup t25 to a14
A14force
Posted on: 2010/7/16 23:00
Another cheap and good method of fitting the oil return to you sump is to use an old A series oil pickup. You use the flange that normally bolts to the block, and fit it to the outside of the sump. (Above the oil level, as stated earlier in this thread)
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