V35 Oem Aluminium To Aftermarket Alumiunum Radiator

[ka86]

Hey guys,

I'm thinking of upgrading the radiator to a Mishimoto (twin core) aluminum radiator (manual).

When I was changing the radiator fans I saw that the current radiator fitted looked aluminium. It had a Calsonic Kansei sticker on it which is a supplier amongst many things (BCMs etc) of aluminium OEM radiators. I believe the V35s/G35s had either standard or aluminium radiators depending on the model. The FSM shows instructions for both.

I wasn't able to confirm whether the unit fitted currently was dual core.. I have a feeling it would have been single core to save on manufacturing costs.

What I wanted to know was for those that had a aluminium radiator fitted already (OEM), whether they found a difference in cooling performance with a Mishimoto or Koyo radiator? Obviously would be a jump up for a standard one to aluminium.

Just trying to suss out whether it would be worthwhile upgrading or hanging in with the current unit. A dual core would be better however not in a real rush to do so.. just more concerned with Summer coming up and the V's poor air flow won't help out as much.

I was going to mock up my own air diversion plates down the track as well.

Cheers guys.

Edited August 17, 2011 by ka86

[R6n350GT]

I went from a manual V35 coupe with stock single core black radiator to due core Koyo Racing radiator.

Here is the visual difference

Does it make a difference? If you are just driving around town,on hwy then no. No difference you can notice, it will sit at the same half way mark on the temp gauge.

The stock one does a fine job at cooling the car under normal conditions, even with hard driving.

Will it make a difference on track or if FI/SC, yes it will as it holds SO much more water and has a lot bigger surface area to cool.

Is it a pain to install, no not really, even the 350Z one will fit but you will not be able to use the power duct thing. But you will need some slim line fans as my stock shroud did not fit. i got 2x 12" slimline ones. Spel brand i think.

Brands? PWR, Koyo then if you cant get those two then get Mishimoto (i read they can be hard to fit and need some mods)..

What is a pain, air in the system, biggest pain in the ass ever. So hard to get out so you really have to drain and fill correctly.

Hey guys,

I'm thinking of upgrading the radiator to a Mishimoto (twin core) aluminum radiator (manual).

When I was changing the radiator fans I saw that the current radiator fitted looked aluminium. It had a Calsonic Kansei sticker on it which is a supplier amongst many things (BCMs etc) of aluminium OEM radiators. I believe the V35s/G35s had either standard or aluminium radiators depending on the model. The FSM shows instructions for both.

I wasn't able to confirm whether the unit fitted currently was dual core.. I have a feeling it would have been single core to save on manufacturing costs.

What I wanted to know was for those that had a aluminium radiator fitted already (OEM), whether they found a difference in cooling performance with a Mishimoto or Koyo radiator? Obviously would be a jump up for a standard one to aluminium.

Just trying to suss out whether it would be worthwhile upgrading or hanging in with the current unit. A dual core would be better however not in a real rush to do so.. just more concerned with Summer coming up and the V's poor air flow won't help out as much.

I was going to mock up my own air diversion plates down the track as well.

Cheers guys.

Edited August 17, 2011 by R6n350GT

[R6n350GT]

Thats ok, no thanks required. I wonder why i bother sometimes.

[Daleo]

Thats ok, no thanks required. I wonder why i bother sometimes.

Lol, it's a bit like that sometimes...

Offtopic, did your mate with the WRX decide to do anything regarding Sway Bars?

[ka86]

Thats ok, no thanks required. I wonder why i bother sometimes.

Wow what a noob (not you.. me).. lol I make a thread, I get a constructive response (or even a response) and don't even respond to it. I logged in the other day and posted in the other thread about aftermarket head units and forgot to respond to my own thread!! Good thing about SAU I've noticed is you usually get a response and especially looking through yours, a detailed response (Some of your threads should be Stickied) so appreciate your pics included answer to mine.. wasn't trying to be a Judas and not respond.

I went from a manual V35 coupe with stock single core black radiator to due core Koyo Racing radiator. Here is the visual difference Does it make a difference? If you are just driving around town,on hwy then no. No difference you can notice, it will sit at the same half way mark on the temp gauge. The stock one does a fine job at cooling the car under normal conditions, even with hard driving. Will it make a difference on track or if FI/SC, yes it will as it holds SO much more water and has a lot bigger surface area to cool. Is it a pain to install, no not really, even the 350Z one will fit but you will not be able to use the power duct thing. But you will need some slim line fans as my stock shroud did not fit. i got 2x 12" slimline ones. Spel brand i think. Brands? PWR, Koyo then if you cant get those two then get Mishimoto (i read they can be hard to fit and need some mods).. What is a pain, air in the system, biggest pain in the ass ever. So hard to get out so you really have to drain and fill correctly.

Great info ^^ I agree about the air in the system, when I changed my fans/thermostat recently and emptied the coolant, had real fun getting the air out.. took a bit and some short drives and constant refilling of the overflow bottle to get it right. I put in straight water to run for a short time (to weaken any older coolant) before doing another flush and running some Glyco based coolant (Nissan OEM FTW.. $50). I will probably leave the standard radiator for now and may change it down the track, my real concern was just the poor airflow. Cheers for the heads up about the slimline fans, noticed on some Mishimoto selling sites saying they recommend it.. didn't realise how much more thicker the new one was to the OEM. I was hoping to run the standard fans (seeing as I just bought them recently!!) but if not than will get some slimlines. Once again cheers for the response

Edited August 21, 2011 by ka86

[R6n350GT]

Lol, it's a bit like that sometimes...

Offtopic, did your mate with the WRX decide to do anything regarding Sway Bars?

He said prices were good and he was happy with them, im surprised he didnt order? Give him a call or message and tell him i told him to get his ass moving and get some real handling !!

Wow what a noob (not you.. me).. lol I make a thread, I get a constructive response (or even a response) and don't even respond to it. I logged in the other day and posted in the other thread about aftermarket head units and forgot to respond to my own thread!! Good thing about SAU I've noticed is you usually get a response and especially looking through yours, a detailed response (Some of your threads should be Stickied) so appreciate your pics included answer to mine.. wasn't trying to be a Judas and not respond.

Great info ^^ I agree about the air in the system, when I changed my fans/thermostat recently and emptied the coolant, had real fun getting the air out.. took a bit and some short drives and constant refilling of the overflow bottle to get it right. I put in straight water to run for a short time (to weaken any older coolant) before doing another flush and running some Glyco based coolant (Nissan OEM FTW.. $50). I will probably leave the standard radiator for now and may change it down the track, my real concern was just the poor airflow. Cheers for the heads up about the slimline fans, noticed on some Mishimoto selling sites saying they recommend it.. didn't realise how much more thicker the new one was to the OEM. I was hoping to run the standard fans (seeing as I just bought them recently!!) but if not than will get some slimlines. Once again cheers for the response

Thats fine , i try and help out as often as i can!

Yeah over heating can be a pain when u dont get all the air out, so get it done right the first time. Here is what you have to do for a correct V35/350GT/G35 coolant flush with no air bubbles (my post on g35driver)Well i got it, ended up doing this, which should be done from step 1:

1. Wait till car is cooled down

2. Jack up front or park on step incline

3. remove rear bleed valve from heater hose

4. remove rad drain plug with bucket under it

5. remove rad cap

6. remove and wash out overflow

ONCE DRAINED

1. Put rad drain plug back in

2. put bleed plug back in

3. put over flow container back in

4. get a long funnel or water bottle or non spill funnel and put tape about 1" from the tip of funnel or on the thread of the bottle until its thick enough to fit snug in the rad neck

5. with car off fill the overflow to minimum.

6. with car off slowly poor mixture into funnel wedged in rad with your premixed mixture (i used distilled and water wetter)

7. Once you see it no longer draining from the funnel grab the lower rad hose and compress and let go a few times and see if anymore drains out, top it up if it all goes

8. Start the car and slowly keep at least a bit of fluid so that the funnel is at no point completely empty

9. As you see it no longer draining and staying where it is rev car to 1500-2000 for 30sec and then let idle. Repeat a few times

10. As soon as you see fluid rise up the funnel and overflow container full turn car OFF

11. Let rest of the fluid drain, if none is left very slowly poor more in until you cant fit any more in.

12: You should put rad cap back on, start car again and turn fans on with A/C off and temp as high as it can go and fans on high

13. Make sure you can feel hot air, that means coolant is circulating and passing hot air out, cold air = air bubble = slightly opening the bleed valve and letting air out until just water comes out.

14. one you confirm hot air and/or no air from bleed valve turn car OFF

15. If jacked up put it down and go for a drive, if all good then put under tray back on!

16. Keep and eye on overflow tank for next week and make sure its at minimum

[ka86]

Good detailed info once again which I will probably use shortly lol.

I was considering the Mishimoto purely because the filler cap is in the OEM location however the Koyo is on the left hence cannot use the Power Duct.

If I do install the Mishimoto, will try to post pics.

I haven't heard that much about problems about fitment however haven't fully researched into that yet.

Did you have any dramas at all (except for the Power Duct issue)?

[R6n350GT]

Good detailed info once again which I will probably use shortly lol.

I was considering the Mishimoto purely because the filler cap is in the OEM location however the Koyo is on the left hence cannot use the Power Duct.

If I do install the Mishimoto, will try to post pics.

I haven't heard that much about problems about fitment however haven't fully researched into that yet.

Did you have any dramas at all (except for the Power Duct issue)?

Koyo make a G35 and a 350Z radiator.

I have the 350z one, brought it from a g35 user and didnt think to ask which it was. So if you get a G35 one it will have the filer cap at the right end!

No other issues