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HOW-TO : fit R32 radiator into CA18 silvia/180

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For a long time i have asked myself "How can i upgrade my car on a tight-arse budget?"

 

Here is one of the solutions...

 

 

CA18 silvia and 180sx upgrade to R32 radiator

 

The JDM s13 series have a fairly small capacity radiator in both ca18 and sr20 models. They are a little small for the australian climate particularly if your engine is making more power than standard and you use it for drags/drift/circuit.

 

Luckily for ca18 owners there is a cheap and easy upgrade which is to fit the radiator from the rb20 powered skylines which is double the size. With a few easy mods they fit very easily and are cheap to buy and easy to find at most jap wreckers.

 

 

STEP 1 : Purchase the radiator

 

I picked up a radiator from an R32 GTS-t for $110 from a local jap auto wrecker. I have been told that the turbo and non-turbo radiators are the same in the R32 but i have not checked this myself. There are plenty of r32 rb20det front cuts around so it shouldn't be hard to find one.

 

radiator-c0001.jpg

 

 

STEP 2 : Remove old radiator

 

Here is the standard radiator. First of all drain the radiator by disconnecting the bottom radiator hose.

 

radiator-a.jpg

 

If you still have the stock intercooler pipes remove the clamps and bolts holding the plastic pipe and remove it.

 

radiator-a0001.jpg

 

Now remove the radiator top mounting brackets and disconnect the top radiator hose. Unplug the lines for the carbon canister and move them out of the way.

 

radiator-b.jpg

 

You should now be able to carefully remove the radiator. You will need to wiggle it around a bit to get it out past the fan shroud, be careful not to damage anything.

 

radiator-c.jpg

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STEP 3 : Comparing the radiators size

 

Stock s13 ca18 radiator on left r32 rb20det radiator on right. You can see they are the same width however the r32 radiator is about an inch taller.

 

radiator-d.jpg

 

Here you can see the real difference with th r32 core (right) being double the thickness of the s13 (left).

 

radiator-d0001.jpg

 

 

STEP 4 : Modifying the bottom mounts

 

There are 2 rubber mounts that fit over plastic posts on the bottom radiator tank. you need to take them from the stock s13 radiator.

 

radiator-e.jpg

 

The r32 radiator is a little bit taller than the s13 so these mounts need to be cut down. Use a very sharp knife or hacksaw to cut off the top part of the mounts right above the first wider section so it looks like the one in this picture.

 

radiator-e0001.jpg

 

 

STEP 5 : Fitting the R32 radiator

 

Fitting the r32 radiator is pretty simple as all the hoses and mounting points are the same with just a few little things to watch out for. Even with the shortened bottom mounts the r32 radiator will still sit a fraction higher (about 5mm) than the stock one which you can in this picture.

 

radiator-f0001.jpg

 

Make sure you fit the bottom radiator hose before you put the top radiator brackets on as the bottom hose will be very close to the chassis. Now you can try and space out the top mounting brackets from the radiator support with washers if you want but it is better if you don't. I fitted a much larger washer to the tops of the brackets and then used some muscle and bolted them down hard to the radiator support just like they are stock. You will find when you do this it pushes the radiator down a bit further. It might not look like it will fit at first but trust me it will unless you do something wrong.

 

radiator-g0001.jpg

 

2004_1202Various0040.jpg

 

radiator-h.jpg

 

Top up with new coolant, check for any leaks, then enjoy!

 

Thanx

 

Comments, corrections, hatemail, spam to : internationalpornstar69@hotmail.com

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thx a lot for teaching ...... but i got few question ...

 

 

1. how long did it take you to change over it ?

2. how many % of cooling will it improve ?

 

thx again .... it's really helpful.... thumb up ~~~ :)

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Sweet article mate - looks like you got a decent core there too. I was going to do this mod a while back but I could only find radiators with fins that were all bent and out of shape.

 

Good work

 

Dan

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just to add to this, the non turbo r32 rads are the same thickness as the s13 ones so no point in using one of them

MAKE SURE U GET THE R32 GTST "TURBO"

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id just like to say that every thing that was said here applies to upgrading s13 sr20 radiators to s14 radiators, the only difference is that the top end tank is on the opposite side other than that exactly the same, including the extra height and thickness of rb and s14 radiators

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pictures don't work - reload please!!

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anyone know if the r32 gtr and gtst radiators differ in size or mounts?

 

I want to put a cross flow radiator in my s13, but the only one i have been able to find so far is for a r32 gtr.

 

thanks for any help!

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GTR Rads are the same. So piping all goes to the same spot. Just they are thicker. Therefor better. Good upgrade for me in my 4dr.

 

Very good upgrade. but alot pricier then the gtst one.

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All the pics in this need to be re uploaded there all broken now.

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can you upload the pics again please ?

keen to see the difference of 2 radiators compare

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