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  #1  
Old 14-09-2016, 01:42 PM
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Default Turbo Fit up

Howdy All... Was hoping to get information regarding the fit up of coolant lines to the turbo on a TD42ti... there is plenty of info regarding the N/A models, but i would like to know the original inlet and outlet from the Ti block to turbo... Any info, pictures if possible would be very much appreciated... Im doing the Hand Grenade to td42 conversion, but its been a long while since i pulled it all to bits...Thanks in advance...
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Old 14-09-2016, 02:30 PM
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Originally Posted by ducatimad View Post
Howdy All... Was hoping to get information regarding the fit up of coolant lines to the turbo on a TD42ti... there is plenty of info regarding the N/A models, but i would like to know the original inlet and outlet from the Ti block to turbo... Any info, pictures if possible would be very much appreciated... Im doing the Hand Grenade to td42 conversion, but its been a long while since i pulled it all to bits...Thanks in advance...
Pretty sure Nissan deleted water cooling on the Ti models
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Old 14-09-2016, 02:36 PM
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Sure did Sydo, mine hasn't got it
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Old 14-09-2016, 05:15 PM
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This might tell you what you need to know.

TD42T Block fittings
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Old 14-09-2016, 07:03 PM
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Originally Posted by Sydo View Post
Pretty sure Nissan deleted water cooling on the Ti models
Not really. The turbo was no longer water cooled but all the ports remained in the block and thermostat housing. They simply just have plugs installed where the lines went to.
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Old 14-09-2016, 11:08 PM
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Ok.. Thanks Guys... will go with what ive learnt...Threads on Patrol 4x4 tell me feed from the thermostat housing, back into the block behind oil pressure relief on left hand side of motor... Sound about right? any other ideas excepted with enthusiasm... cheers in advance...
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Old 15-09-2016, 03:50 AM
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Originally Posted by ducatimad View Post
Sound about right? any other ideas excepted with enthusiasm... cheers in advance...
Sounds right. Just make sure the cooling line from the block goes to the bottom of the turbo and the line from the thermostat housing goes to the top.
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Old 15-09-2016, 08:43 AM
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Quote:
Originally Posted by ducatimad View Post
Ok.. Thanks Guys... will go with what ive learnt...Threads on Patrol 4x4 tell me feed from the thermostat housing, back into the block behind oil pressure relief on left hand side of motor... Sound about right? any other ideas excepted with enthusiasm... cheers in advance...
The factory turbo cooling is fed from the block - approx. 6mm dia pipe with a M12x1.5 banjo in front of the oil pressure relief. The 1/4 BSPT block drain is used on N/A blocks.
The return is to the low pressure side (water pump suction) of the thermostat housing. It uses a M16x1.5 banjo with approx. 8mm pipe.

Here's a pic of the TD42T turbo water cooling feed pipe. M12x1.5 on the block side and M16x1.5 on the turbo side.
...
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File Type: jpg turbo feed pipe 2.jpg (29.5 KB, 60 views)
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Last edited by JFF45; 15-09-2016 at 09:16 AM.
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Old 15-09-2016, 09:17 AM
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So what's better. Runing the water lines or not ?
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Old 15-09-2016, 09:56 AM
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So what's better. Runing the water lines or not ?
Depends on the individual turbo as to how important it is. Some turbos can work ok without it (as far as I know), but others definitely need it. It is important on my new Borg Warner for example.
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Old 15-09-2016, 09:57 AM
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Quote:
Originally Posted by ducatimad View Post
Ok.. Thanks Guys... will go with what ive learnt...Threads on Patrol 4x4 tell me feed from the thermostat housing, back into the block behind oil pressure relief on left hand side of motor... Sound about right? any other ideas excepted with enthusiasm... cheers in advance...
Other way around mate - feed is from the rear of the block, return to the front in the thermostat housing.
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Old 15-09-2016, 10:04 AM
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Depends on the individual turbo as to how important it is. Some turbos can work ok without it (as far as I know), but others definitely need it. It is important on my new Borg Warner for example.
I am presuming the OP will run the HT18 ? Gturbo and UFI don't need water lines
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Old 15-09-2016, 10:13 AM
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I am presuming the OP will run the HT18 ? Gturbo and UFI don't need water lines
Not sure, he may be.

I think it depends on the bearing/journal type in the turbo. Garrett 2860RS is another that needs to be water cooled, according to the manufacturer.
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