Coolant hoses to remove in 1UZ Toyota V8 engine swap along with radiator system explaination

[@samnguyen8426]

this guy is the gift that keeps giving the hero we don't deserve but needed

[@CartuneNZ]

thanks. Cheers Kelvin

[@samnguyen8426]

@@CartuneNZ i sent u an email on the wiring guide

[@spethcial]

I stumbled across your channel from a Lexus forum. I’m putting a gen 1 into an 87 2wd and like another commenter stated your channel has been an encyclopedia for learning the ins and outs of the engine and swapping. Thank you!

[@CartuneNZ]

Awesome! Thank you!

[@ryanparker1171]

appreciate the long version its nice to know the whys and hows

[@CartuneNZ]

Thanks Ryan. I like details too. Cheers Kelvin

[@williamjames6967]

Your a life saver.. I hope one day to shake your hand your videos have saved me time money and a lot of headaches thank you very much

[@CartuneNZ]

Thanks for the compliment William. Can you tell me about your project? Cheers Kelvin

[@williamjames6967]

@@CartuneNZ yeah.. sure.. all about knowing exactly what I'm working with when I try to do my projects right now I got a 99 GS 400 with 260000 miles on it and it runs like a champ I wanted to throw medium size turbo on it but there's not a lot of parts for it I find as far as headers and intakes for what I want to do and just watching all your videos and just help me out a lot and I also have an 05 GX470 I just love the Toyotas

[@CartuneNZ]

@@williamjames6967 when no one makes parts for jobs we make our own. One of my subscribers has a boosted gs. Ill try to find a video.

[@CartuneNZ]

Try this kzbin.info/www/bejne/iGXOZaCpd7Vsi9k

[@pinkflamingodizzle]

fantastic videos! Thank you so much. I'm doing a swap into my old 2wd pickup up here in the U.S., and you've helped me tremendously in familiarizing myself with my 1uz!

[@CartuneNZ]

Cool as. You might have noticed I sometimes use the overseas term Pickup in my titles instead of the term Ute which we use over here. I'm slowly working my way through all the info from my brain and turning it into videos. What year Pickup are you doing?

[@pinkflamingodizzle]

@@CartuneNZ Hey thanks for replying! Its an 88 2wd with the carbonated 22r. I'm currently refreshing the engine and getting ready to mount it to an R150 transmission out of a 2wd toyota t100 (got an amazing deal on it).

[@CartuneNZ]

@@pinkflamingodizzle Good on you using the stronger gearbox. I did a bit of a video on bellhousings but never posted it as I wasnt really happy with it. I'm about to do another 4x4 hilux which has bellhousing issues so it might extend into a longer one explaining a bit more. I'm also planning a external refresh video on both Gen 1 and Gen 2 engines. Good luck with your one. Cheers

[@pinkflamingodizzle]

@@CartuneNZ Thank you and looking forward to all your videos!

[@mac1mike]

this will come in handy when I do my mid engine swap. Great video, always thinking ahead!

[@CartuneNZ]

Glad to help. Cheers

[@shanerick9298]

Awesome job Kelvin Keep the videos coming

[@CartuneNZ]

Will do. Plenty more ideas yet.

[@zorsts]

this explains quite a lot. I was wondering how my temp gauge would work , I just need a temp sensor NEXT to the ecu sensor. (Wondered why that plug was was next to the ecu sensor)

[@larrysheran]

Thanks Kelvin! Your videos are if great help to many of us.

[@CartuneNZ]

Glad to help. Cheers Kelvin.

[@peytonturner7343]

Thank you for making videos on these engines i appreciate your content🤝 makes me want to turn my sc400 into something cooler 😂

[@stuartsurkitt2585]

just like all your videos, very helpful. my gen1 1uz has a water pipe the comes up by the left hand coil pack. i presume it goes to the standard header tank. as im using the header tank on my mazda bongo, can this one be blanked off or do i need to feed it back into the system? cheers. Stuart in the UK.

[@HendrickS.Sibiya-xw8ky]

Hi, thanks for the information about the 1uz fe V8 engine. I have this engine on my Vw Caravelle T3. The problem is overheating. What may be the problem overheating. From Hemdry @ South Africa. Thanls

[@CartuneNZ]

I recommend taking to a good knowledgeable workshop to diagnose correctly.

[@bannndo]

Thank you for this video! Cheers

[@CartuneNZ]

Cool as. Glad expanded your knowledge. Cheers Kelvin

[@vlurrp]

Have you done a similar video for the 1 and 3uz vvti?

[@tonyisme4934]

On my LS400 the coolant overflow reservoir .... its on the left side of engine bay. There is a hose on the bottom of the tank, that hose goes to a clamp and its clamped to a metal hose and disappears under the engine. Where does that go? Does it drain onto the road? Or does it go into the engine someplace? I'm trying to clean that dark varnish out of the tank. I'm intending to put Toyota Long Life Red at 65% mix with distilled water....

[@just18972]

Thank you kelvin appreciated mate

[@CartuneNZ]

No worries Justin. Happy to help.

[@Guib-hd8kv]

Hi I got 1 Tonner bakkie cable Speedo cable with 1uz automatic can you pls help me find out

[@CartuneNZ]

Sorry, not sure what you are asking.

[@agk3952]

How to remove hydraulic fan pump and install pulley

[@kool-aidsphuckery9596]

I know this is old Kelvin but I’m wanting to simplify my 96 SC400’s 1uz. I want to do the EGR delete, get rid of any unnecessary cooling pipes because they are another potential failure, and go against your teachings and put a radiator from a VVTI engine and delete the reservoir and hydro fan. So I could then even remove more cooling pipes according to this video. Could I delete all the same pipes with my stock EGr deleted 1uz?

[@enrgy]

Does it differ a lot from what you would remove while doing a 3UZ swap? By the way your videos are very informative and helpful. Thank you for doing them.

[@CartuneNZ]

yes , the cooling lines on a 3uz are very different. Cheers Kelvin

[@TrackKingRacing]

@@CartuneNZ have you done a video on the 3uz hoses? I couldn't find one but would love the same information about the 3uz. 💪🙌👍 Thank you for all your great videos.

[@CartuneNZ]

We have lots of 3uzs in our shop atm. Videos on them coming

[@TrackKingRacing]

@@CartuneNZ wonderful to hear. I should be completing my swap in the next few weeks so I'll be looking out for them .

[@jesiahsydow9301]

@@CartuneNZ don’t know if I’m missing them but if you don’t mind, can you make a two minute video on the 1uz Vvti cooling system for a swap using a heater core and expansion tank please

[@christianoneill9494]

Thanks for the great information. On my swap I am not running a heater in the car so no heat exchanger. I currently have the rear coolant line looped over. What do you suggest I do with the rear coolant line so the system works properly?

[@CartuneNZ]

I never loop the heaters lines when no heater is present. I always blank them off. Cheers Kelvin

[@danlaetsch8493]

I have a 4ye engine in a 1987 Toyota van. I am wanting to delete the egr as well as remove water lines through the throttle body. Any thoughts on that old style overhead valve engine? Maybe I should just pull it and stuff a 1 uz in there...😊😎 Edit: I live in southern Arizona in the U S... Climate is similar to N Z...

[@FlySoGood]

This bro is a 1uz jesus

[@CartuneNZ]

Thanks for the compliment. Cheers Kelvin

[@pozman3001]

Great video thanks. So in a setup with no heater you suggest just blocking each outlet/pipe individually? Thanks

[@CartuneNZ]

Yes. I always blank them off if not using them.

[@pozman3001]

@@CartuneNZ great thanks for that!

[@boostv8chevy457]

hi friend. at 16:20 you try to explane the hose of the heater looping it. i cant understand from your explanation what is best to do. Make a loop is better or block it off? i think the best way to keep the engine as cool posible will be better. thank in advance.

[@CartuneNZ]

Block the heater pipes if not using a heater core.

[@jcalfaro107]

For the rear house for the heater, if you are deleting the system what’s the correct thing to do besides looping it ? Seem?

[@CartuneNZ]

Blank it. Never loop it.

[@YhAFbwts]

love these videos. I have a 92 and a 93 engine, both with cold start sensor for the great white north of Canada. Do you suggest changing the cold start sensor? I'd imagine if yes for reasons of getting brittle.

[@CartuneNZ]

I dont change cold start injector timer sensors just because I can and only fail every now and again. Not as prone to getting brittle either. They arent as easy to come by as the efi temp switch. However if it looks poorly I would sort it. Cheers Kelvin

[@lexuslife]

What will happen if you delete the water hose to the egr system. With the egr system still plugged in?

[@liamstolton1623]

Hi CartuneNZ Great info on the 1uz, one question though. The small feed on the left hand side of the thermotat housing you say goes to the expansion tank if your running one. Is this the main fill pipe from the expansion tank? Is there any others that need to bleed up to the top of the expansion tank? Thanks

[@CartuneNZ]

I only use these tubes if running a stock style system. Otherwise they all come off. There are two tubes into the expansion tank from the cooling system. I will look over the stock system one day to explain that better. I just happen to have a couple of test cars. Cheers Kelvin

[@cquatmann]

Is it beneficial to keep the expansion tank?

[@CartuneNZ]

There are many variables to consider. Sometimes yes, sometimes no

[@cquatmann]

@@CartuneNZ I’m doing a supercharger set up on e85 with link storm and I’m a drifter, and it’s a sc400 1994. I haven’t done the supercharger yet and as of now I haven’t had any overheating issues. I was going to eliminate all the extra lines like you talked about and keep the expansion tank. Thank you for your reply I absolutely love this engine and it has served me good for 8 years now of abuse

[@garthhewson4798]

Hi . Putting a vvti in a jetboat. Using a southern jet raw water cooler. Having issues with keeping it cool. After watching your video looks like I need to block heater hoses ( as looped atm) and plug the thermostat by pass . The raw water cooler runs its top hose to the inlet ( where old thermostat was) Any other advice?

[@CartuneNZ]

One day Ill do a video on the proper way to do raw water jetboat to uz. Definitely blank heater circuit. Bypass circuit blanked in engine. I use chev priority cooler with thermostat in the cooler with pressure relief valve. Easy and works perfectly.

[@connr555]

So putting a freeze plug in the back of the water pump and removing the coolant bypass tube will not work?

[@CartuneNZ]

I remove the heater circuit all the time. It gets a bit confusing as the heater circuit is shown as a by pass circuit on the factory diagrams

[@rexmundi2139]

What size is the little hose on the front by the thermostat that you have blocked with a bolt? I need to get 1 and don't know what size to buy. Thanks

[@CartuneNZ]

Hello Rex. I didn't blank the little hose at the front with a bolt, that was a past owner and I would never fit an engine with a bolt inserted like that. This is my test engine which hasn't been prepared yet and I never do it like that. My preferred way is to remove the housing , remove the pipe and weld the hole. See the yellow ute and engine preparation videos. Old yellow is slowly getting different preparation done as each job goes by. Also upcoming silvia engine where this test engine finally gets a welded housing. Cheers

[@fmn716]

Hi. On which side of the radiator would you put the fan switch

[@CartuneNZ]

I prefer the top of the radiator, some prefer the bottom, provided the system is set up correctly either works fine.

[@heugen3341]

I currently have an air lock in my system but my rad cap isn't as high as it should be, but I also something is pooling in the valley bc something burns up after it runs, what could it be

[@CartuneNZ]

watch this. kzbin.info/www/bejne/gHqxYqB7dsqBb68

[@raidenx9053]

Can i remove the coolant lines on the throttle body for a 1uz vvti / 3 uz vvti?

[@CartuneNZ]

You may do anything you want as its your engine. I prefer to leave the later engines hoses on, but there are exceptions.

[@dgswagger]

Can you use a welded close by pass motor in a vehicle or is it strickly for marine use

[@CartuneNZ]

Could you maybe explain more please. What do you mean by welded close by pass motor?

[@dgswagger]

@@CartuneNZ Weld close the hole for the bypass valve on the thermostat cause I'm running mine with and without the thermostat takes equal amount of time to heat up with two huge cfm fans but motor just keeps heating up have a 4 core aluminum radiator everything done properly and thought maybe it's the motor but this is the third motor and all doing the same thing keep running hot and over heating so thought maybe if I Weld the bypass valve close then can flow better and maybe run cooler

[@CartuneNZ]

@@dgswagger ok, that helps me understand. In some performance or racecar situations we modify the cooling system with the bypass system removed but thats a whole different topic. It then becomes a redesign. Sounds like you need to do more testing to identify whats up with yours.

[@dgswagger]

@@CartuneNZ thing is all my piping is good I've done a lot of Lexus conversions never had this problem before only with this vw crafter bus and 3 different motors now 1 import and 2 out of perfect running cars so can't for the life of me see why I am still over heating

[@TheLolvista]

Hey @CartuneNZ , I have an issue with the cooling system. I have replaced the heater core and after that, I have filled system via inlet 14mm bolt or so, then I have filled coolant system tank to the maximum line. All seems good, but now when the weather is hot sometimes coolant get thrown out and the level goes to a minimum. All hoses are good, the engine just throws away some part of the coolant via overflow hose on top of the coolant tank. Is it possible that I have air in the coolant system or something like this?

[@CartuneNZ]

Hello. Air locks are always possible but if the system is set up correctly then air locks should leave the system quickly. It is important to ensure the radiator cap is in good order , that the hose between radiator and overflow is correct and unrestricted. Are your fans in good order with no overheating? How big is the overflow bottle? I have had systems which are quite large where the expansion exceeds the size of the overflow bottle. Then when they cool down the overflow bottle is completely empty. The solution has been a bigger overflow bottle. Good luck with sorting yours, I'd be interested to now the remedy. Cheers Kelvin

[@TheLolvista]

kzbin.info/www/bejne/p5naeZisn7Ckbsk When I press the hose I can hear that air is coming out under the cap! This cap is broken I think, rubber bushing is bad. That means that my overpreassure hose was open all the time and was throwing coolant

[@chadmorrison_]

is there any drawbacks of deleting all these tubes other than the 4??

[@CartuneNZ]

We have a mild climate here so in very very cold climates I wouldn't, apart from that no disadvantage

[@reeceglover5762]

Hey mate what do you suggest to do with the heater hoses in a jet boat with a heat exchanger? We are getting overheating on idle but it cools from 1500rpm on and it is just looped thanks

[@CartuneNZ]

I have videos with jetboat engine setup where I always blank them. Cheers Kelvin

[@reeceglover5762]

@@CartuneNZ thanks mate I will do, we did have our header tank joining them but we will move it

[@reeceglover5762]

@@CartuneNZ could we just block one and still have the tank filling off one?

[@CartuneNZ]

@@reeceglover5762 you may do whatever you want, its your boat

[@reeceglover5762]

@@CartuneNZ do you think stopping it flowing at that point could possibly stop overheating issue? I think it is just circulating there on idle and then when you are up in the revs the water pump is forcing enough water everywhere which then allows it to make it back to the heat exchanger?

[@JDM]

Is it possible to buy the celsior egr piece still?

[@CartuneNZ]

Brand new no. I grab every second hand one I see. Generally I'm getting complete intakes just for the little cover

[@JDM]

@@CartuneNZ never seen that in the us, might have to hunt one down. Helpful vids as always

[@brianblank82]

hey mate what size bung is that.. ID im going to ebay some

[@CartuneNZ]

Which bung are you referring too?

[@brianblank82]

@@CartuneNZ the one that you put on the cross over on the rear. Nekminnit I just went down to Supercheap and grabbed two 10mm ID. The bung removed from the ICV to the rear turns out it’s about 8mm. The 10mm fits nicely on the barbed fitting behind the bleed bolt.

[@lexuslife]

I have a 92 LS400 and my temp sensor runs a little hot than normal. But my motor is not running hot. What would cause it to do that? Now I put pipe sealant on the sensor. Would that make it read improperly?

[@CartuneNZ]

Hello. The sensor requires earth with the block to work correctly so I only use liquid sealant like factory.

[@BobbyFigliola]

E X C E L L E N T ...... really. Ya got the Lexus eng. brain

[@CartuneNZ]

Thanks. Brain can get a bit scrambled now as a result. Cheers Kelvin

[@Dann0343]

Doesn't the IACV need coolant as well?

[@CartuneNZ]

Not in the climate I'm in. We only get to maybe -4c for a couple of days a year so no need for coolant through the Iac. Cheers

[@Dann0343]

Ah so it's the same as the throttle body then - coolant is used to heat it up. Thanks for the insight, looking forward to more videos!

[@skatefliper98]

@@CartuneNZ hi, if im in california where its mostly hot do i need to keep the coolant lines that run though the IACV? or i just can blank them of?

[@CartuneNZ]

@@skatefliper98 I would be blanking them off. Cheers Kelvin

[@skatefliper98]

@@CartuneNZ great, could i just leave them unblanked? since theres no more coolant running through them ...