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1JZ Single Conversion Coolant & Vacuum Questions (With Pics)

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Old 11-20-13, 02:03 AM   #1
GsLex00
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Default 1JZ Single Conversion Coolant & Vacuum Questions (With Pics)

Hey guys I'm starting to convert to Single and need help figuring out where some vacuum lines and coolant hoses go... 1jz NON vvti

This one used to be connected to the stock twins and runs around behind the block and was wondering if i can just connect it to the location next to it where the unconnected one is
Click the image to open in full size.

2nd, this is the vacuum hose that also ran to turbo side to the stock twins, wondering where it goes for single swap...
Click the image to open in full size.

And lastly, the IACV.. Are most of you guys just putting breathers on it or what? Also if anyone has any close up pics of their Manual boost controllers I also need to figure out where that goes.

THANK YOU IN ADVANCE!!

_Tom
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Last edited by GsLex00; 11-20-13 at 02:10 AM..
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Old 11-20-13, 04:23 AM   #2
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Where is the other end of that small hose that goes behind the block? I didn't have anything like that on my car, but I have a JZA70 swap, not a JZZ or JZX...Regarding the vacuum/boost hose on intake, I plan to T that and use it to feed my boost gauge and BOV. My MBC is installed on the shock tower ready to be plumbed, but has no pressure lines run yet. Finally, I plan to just run breathers on my VC and IACV.

BTW, is this for your Cressida? Didn't I just buy some injectors from you?
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Old 11-20-13, 09:52 AM   #3
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that hose in the first pic used to be connected to this...
Click the image to open in full size.

yeah this is the Cress soon to not be slow anymore (hopefully lol) and yes u did!
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Old 11-20-13, 10:46 AM   #4
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Hmmmm...Here is what mine looks like and where things go:

The red arrow fed the twins and got hacked off and welded shut.
The blue arrows indicate heater core pipes and are connected directly with heater hose now.
The green are vacuum lines that are no longer used, as I removed the entire hard line crossover at the back of the head.



Here is a bad shot of the welded shut coolant line.

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Old 11-20-13, 11:40 AM   #5
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Nice thank you man I'll probly end up trying to find a good cap instead of weld because my garage is very limited for race car builds LOL
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Old 11-20-13, 12:04 PM   #6
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I don't have a 1jz, but if you have a coolant line coming into the turbo's and one going out, you should be able to just connect the 2 pipes together with some coolant hose to maintain the proper flow. either that or you have to block off both sides, but if the in and the out lines are next to each other I would just loop them. maybe someone has done this already.
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Old 11-20-13, 01:02 PM   #7
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Quote:
Originally Posted by GsLex00 View Post
Nice thank you man I'll probly end up trying to find a good cap instead of weld because my garage is very limited for race car builds LOL
Yeah, I cut mine off because I wanted more room for the downpipe.
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Old 11-20-13, 02:04 PM   #8
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thats a good idea i should cut it off
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Old 11-20-13, 02:07 PM   #9
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Quote:
Originally Posted by Ali SC3 View Post
I don't have a 1jz, but if you have a coolant line coming into the turbo's and one going out, you should be able to just connect the 2 pipes together with some coolant hose to maintain the proper flow. either that or you have to block off both sides, but if the in and the out lines are next to each other I would just loop them. maybe someone has done this already.
Thats exactly what I did just looped them back together, we'll see how it acts
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Old 11-20-13, 02:13 PM   #10
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if its close to the turbo /dp heatwrap it but now is the easiest time it will ever be to take it off and weld it without a turbo hanging on there.
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Old 11-20-13, 02:13 PM
 
 
 
 
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1jz, 1jzgte, cap, capping, coolant, heater, hose, intake, lines, pipe, size, turbo, vaccum, vacuum, vvti

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