Jump to content
SAU Community

Recommended Posts

did one ages ago and didnt have these issues before (or if i did, its too many bourbons ago and ive seem to have forgotten) but two questions,

1) RB is in, with a31 xmember, theres 15mm between the back of the motor and the firewall, and no room between the radiator and the motor for any cooling fans, the set up had AU fans on the rad before, they wont fit at all now, neither will the factory clutch fan, what have people done before?

p1030005nu2.th.jpg

2) box xmember, doesnt line up at all as expected, neither does a CA one or any other S13/R32 one, custom job needed?

cheers guys.

Link to comment
https://www.sau.com.au/forums/topic/200088-25-to-s13-conversion-questions/
Share on other sites

I did my conversion using the R33 crossmember, but still made custom mounts.

Have about 7cm room behind engine to firewall. This setup made the RB25 gear shifter located in the std position. A slimline fan can then be mounted on cooler, infront of engine. My own fan is not slim, so mounted on other side of cooler. Blowing through it.

It still works.

Use these FLEX-A-LITE fans from Hardiman in nsw (autobarn/repco also supply) http://www.flex-a-lite.com/auto/html/low-p...e-electric.html combne it with the drift digital radiator controller and you can set the on temps with an in cabin digital display and overtemp warn etc ( only $169)

i use this on setup cats and it is the only fan setup that i have found that can handle drift comfortably, i tried davies craig and ice but niether cut it. The beauty of these fans is that the harbonic balancer sits right between the two fans... close but not touching and it seals around the radiator perfectley with a nice rubber seal, (nearly the exact size of the whole radiator)

Gearbox mount : use sr20 manual xmember with extensions bolted on. Use decent grade flat bar see atached pic.

post-34927-1199372277_thumb.jpg

i'm guesing the only way to maximise cooling is to remove the A/C condenser and scrap the entire A/C system.

Currently I've got a 10inch craig davies fan behind the radiator and infront of the condenser on the driver's side and boy does the car overheat like a bitch in summer, thats granny driving with the A/C on.

Would a flexalite fan fit between the motor and the radiator in the middle? there's like 5 cm clearance

i'm guesing the only way to maximise cooling is to remove the A/C condenser and scrap the entire A/C system.

Currently I've got a 10inch craig davies fan behind the radiator and infront of the condenser on the driver's side and boy does the car overheat like a bitch in summer, thats granny driving with the A/C on.

Would a flexalite fan fit between the motor and the radiator in the middle? there's like 5 cm clearance

it will work with a/c (we run two large oil coolers and pwr steer cooler mounted in front of rad and a 115mm cooler :) ) if you use the flex-a-lite fans, you could keep the extra front fan too for extra safety. on cats car now with the greddy 40mm radiator and 26 harmonic balancer (ALOT bigger than 25) i have had to remove some ribbing on the fan shrouds (1min job) but it all still fits as the harmonic balancer sits in the low section between the fans. (see red dot in attached pic) Bear in mind these fans are some of the best money can buy so dont expect to pay davies craig prices. search the part number 220 (google) for pricing then ring around, i know they are instock so price matching would be easy.

dimensions are 39.4cm x 66.7 x 6.6cm (remmber 6.6cm is the middle of the flex-alite fan metal plate which is the silver part in pic) with this metal plate removed it frees up another 5-9mm.

post-34927-1199410976_thumb.jpg

post-34927-1199415684_thumb.jpg

so you run just those thermo's on cats car!!! nothing else????

yeah the twin 12" work fine, i also use a NISMO thermostat. As for switching i like to use the drift fan controller to engage two separate relays one for each fan and each relay runs a 50ish amp circuit breaker (avail any auto shop) so that in the case they over heat they dont shut down for good.... they will cool down and reset. i used a pivot fan controller originally but it was shit and caused the fans to stop working on more than one occasion.

i also use large gauge wiring as i found out after doing a strobe test on the fan speed that with the orginal wiring i used only ran the fans at 80% not at full speed... so spend the time on the 12v supply (i used audio 6awg) you should be laughing.

9510_2.jpg

For some reason it seems that on Cat's car there seems to be a greater distance from the CAS to the radiator, i.e. there's more room from the crank to the radiator. It seems I've got less room

For some reason it seems that on Cat's car there seems to be a greater distance from the CAS to the radiator, i.e. there's more room from the crank to the radiator. It seems I've got less room

measure from the balancer to the radiator for me :O (must be soon though as i board a plane for HK then japan later tonight)

post pic of yours john

all: would this work to give more room, by tilting it forward?

editpc6.th.jpg

After swapping to the greddy rad (nearly 3.5 times the core width) i welded in a lower R32 front rad support and notched the s13 upper (and plated it for strength) but with the std GTR and JJR style aluminium rads i could still fit the flex-a-lite fans.

Tilting it forward will help abit but the bottom stays pretty much the same distance from crank... maybe 3mm diff at max lean.

Cars like Kuroi run a squat custom radiator and move it right forward and sit it in the A/C condensor mounts, but this was too much of a comprimise for me, i wanted off the shelf radiators etc to fit so that in the case of a accident it could be fixed easily without custom parts.

the clearance on my car looks very similar to Simons.

If I didn't have an A/C I would be sweet just running 2x 12 thermos pushing, but yeah.

Look at the flex-a-lite fans, they seem to be thicker than the Davies Craig fans.

12" Flex-a-lite 140 pusher -> 6.66 cm

12" Davies Craig DCSL12 -> 5.1 cm

I'm currently using the 10" Davies Craig DCSL10 and its 6.4cm thick, its about 3cm from the crank, if I moved it any more closer it would touch the crank.

Mind you, if I did use the 2x 12 flexalite fans, there would be another problem, it would touch the A/C compressor & power steering pump..

Edited by johnnilicte
the clearance on my car looks very similar to Simons.

If I didn't have an A/C I would be sweet just running 2x 12 thermos pushing, but yeah.

Look at the flex-a-lite fans, they seem to be thicker than the Davies Craig fans.

12" Flex-a-lite 140 pusher -> 6.66 cm

12" Davies Craig DCSL12 -> 5.1 cm

I'm currently using the 10" Davies Craig DCSL10 and its 6.4cm thick, its about 3cm from the crank, if I moved it any more closer it would touch the crank.

Mind you, if I did use the 2x 12 flexalite fans, there would be another problem, it would touch the A/C compressor & power steering pump..

yeah the stock flex-a-lite ones are, but they are nothing like the low profile fans.... i could only fit one davies craig fan way off to the side of the rad... now its got the twin flex-a-lite one fitted no worries....

i dont remmeber referring to the 140 anywhere especially as a pusher??

looking at simons pics there should be plenty of room... you only need 4-6mm ish of clearance

Sorry i copied the wrong thing, should have been the 120 puller,

but anyhow, the fan you recommended is the 220 puller, which is part of the "Low Profile" range.

Still the top height of the fan is 6.66cm, would be fine on the driver's side, but i have a feeling it would touch the power steering pump and A/C pump.

Makes me wonder now, I'm hanging to head back home and measure up!

ok clearance is as follows:

rad to CAS = 90mm

rad to pwr steer nut= 65mm

rad to pwr steer pulley= 73mm

rad to balancer pulley = 50mm

all these clearances are enough for the fans to JUST fit, ie flexing them to sqeeze in then once in they have about 5 mm in all directions as a minimum for clearance and there is no rubbing issues.

i hope yours has as much ;) or else we need to find another solution for your car.... :O like moving rad towards engine (AC condensor forward towards cooler) and fitting fans to the front of the rad.

Simon (for your mates car) can you move rad back and fit the flex-a-lite 12" slimline pushers to the front instead of pullers?

post-34927-1199432969_thumb.jpg

post-34927-1199433022_thumb.jpg

post-34927-1199433036_thumb.jpg

post-34927-1199433051_thumb.jpg

post-34927-1199433068_thumb.jpg

post-34927-1199433334_thumb.jpg

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • A realistic expectattion of how long it has to last also comes down to.... when do you think you will be banned from registering and driving old petrol powered shitters? It's 27 years since that thing was built. It probably rusted out 15 years ago. It was probably repaired and looked OK for another 10. If you do a similarish bodge job now, or perhaps slightly better with some actual rust conversion and glassing, then.... get another 10-15 years out of it, after which you'll only be permitted by the CCP to drive electric cars manufactured in their Shenzen zone anyway. 
    • Let me assume that the concern over a manual ECU is that the NeoDET that you have was an auto and has an auto ECU. That ECU will not be a problem, but you WILL have to Nistune it. And you would have to Nistune it even if you had a manual ECU, because the turbo ECUs will shit the bed if they do not have all the things that they were told they have to have, to be happy. The big one being the TCS CU, which you won't have in your car. Anyway, with an auto ECU (which I have running my originally auto NeoDET in an R32) Nistune allows you to put in a Stagea image which doesn't panic about the absent TCS, and allows you to override a whle bunch of other annoyances that would otherwise see the check engine light on 100% of the time. Also, you can't wind up the power very far on the stock NeoDET ECUs without Nistune, because the boost sensor gets in the way. Nistune allows you to push that problem much further up the dial. Do you even have the boost sensor with the engine? Without it, you are SOL and will need an aftermarket ECU (or to find a sensor somewhere, god knows where). I can't tell you what the wiring loom differences are in a 34. But what Duncan said above needs to be considered. When you say "loom", does that include the transmission loom? Because you will need to swap out the auto tranny loom for the equivalent manual loom, and get rid of the neutral/park start interlock (basically hot wire it).
    • I have had the r3c in for years now, maybe close to 7 years and it has never missed a beat, anyone can drive it. Super easy to drive around town, the hotter it gets does get a little hard but it holds the power easy as 
    • Shit thing to find eh? I guess the big issue is that whatever "fix" you do now, it might slow the rust down but won't fix it. I just wanted to add that in no way is fixing sheet metal in 3 dimensions the place to start with welding....that is a pro only job because its too hard to work out where things should be, let alone doing a clean enough job that it can look OK and still be strong too.  I needed to get a new rear quarter panel on the GTR and it took a pro weeks to get the old one off cleanly, new one on in the right place and looking somewhat like it should have with most of the previous connecting panels in place. Gluing a couple of bits of metal together with a welder in the garage is doable, but that is totally different to doing panel  replacement
    • This seems to be a very popular swap since all the turbo skyline prices went through the roof! I'll let someone more familiar chime in, but I understand that yes you probably want to swap the loom in to swap out the auto TCM stuff. You should not assume everything just plugs in either, you need to check at least the ECU wiring diagram for any differences at the plug at the left headlight and probably the ones near the ECU that join the dash loom too  
×
×
  • Create New...