Radiator / fan set up

[Cypriotgeeza]

What size radiator and fan set up is everyone using?

just looking for a bit more clearance between the rad and dizzy cap and cant make up my mind as to what fan to get..considering a spal atm..

thanx for replies

[leeparkes]

E28 535i rad with an E34 aircon fan,

E34 aircon fan fits near perfect under the slam panel and has got plenty balls to do the job

E28 535i rad is probaly the best you'll get for clearance unless you go custom

[Cypriotgeeza]

thats a massive help mate! its jus the availabilty of them..lol

[Rav335uk]

I'm running the E34 standard rad, and a Peugeot 307 diesel fan

[Cypriotgeeza]

nice frankenstein set up there rav lol i think mine has a standard E34 rad in but has no fan and the dizzy cap is way too close to the rad for my liking! lol

just checked GSF for a E28 rad and found this -
RADIATOR-MAN TRANS E28 518i >9/84 M10 Manual 89.75

will this fit? or will it be too small due to it being for a 1.8?

[Rav335uk]

Too small, don't worry about the rad being a few mm's from the dizzy cap, mine has never touched together.
Only pita is when you might need to change the thermostat or dizzy.

[shedrool83]

http://cgi.ebay.co.uk/ORIGINAL-BMW-E28- ... 3cab515644


There this on ebay atm

[Cypriotgeeza]

thanx for the link shedrool83! might just stick with my rad for now and get an E28 one when it packs in..

[zaust]

I'm using a e32 a/c fan and again the e28 rad. New rad is 140 from most places.

[Cypriotgeeza]

Ok after speaking to leeparkes and deciding that the M20 rad i have in there will prob be up to the job im just looking at rad fans

narrowed it down to these two:

http://cgi.ebay.co.uk/14-Slim-Line-Radi ... 41488825ef

http://cgi.ebay.co.uk/14-SLIM-ELECTRIC- ... 414e4a9a88

does anyone have any experience with fans like these? im sure i've seen the brand "app" from somewhere before..

[Rav335uk]

I'm using a 307 pug fan, so far so good.
Have you worked out the wiring for the fan yet, and what temp switch you using?

[Cypriotgeeza]

That was next on my list Rav man, was going to go through the m30 pages and see what other people have done

i take it there is different types of temperature switches?

[Rav335uk]

Simple relay, fuse, temp switch set up, or Lee has a switched fan set up from inside the car.

[Cypriotgeeza]

Nice one Rav..Will any relay work? i could get one from work if thats the case

[Rav335uk]

Sorry, edited my post with a pic of my set up.

[Cypriotgeeza]

thanx for that Rav..i appreciate all the help you've given me!

ill be honest i've never been to great with electrics and wiring but that seems simple enough!

The cylinder head "should" be ready by tomorrow..if so pics will follow and hopefully it will be back together and running after this bank holiday! (fingers firmly crossed lol )

[Cypriotgeeza]

thanx for that Rav..i appreciate all the help you've given me!

that also goes to everyone who has helped me in this project!

i find it hard that complete strangers can help one another in todays society and am grateful for all the help i have recieved!

[Rav335uk]

[leeparkes]

Ok after speaking to leeparkes and deciding that the M20 rad i have in there will prob be up to the job

Have you tested it yet?

[Cypriotgeeza]

Ok after speaking to leeparkes and deciding that the M20 rad i have in there will prob be up to the job

Have you tested it yet?

yep tried and tested not a cold spot at all! flushed it through a couple of times do get any kind of oil residue out of there and now im just awaiting the fan to come.

heads taking a bit longer due to them now also doing the exhaust valve guides aswell.

wouldve been perfect to have it back for the long weekend but not much i can do about it

[Cypriotgeeza]

ok just a quick question guys, i've fitted the fan to the radiator now and am collecting what i need to wire it all in
-now to the more electrical minded people this may be a stupid question but arent all relays the same as long as the rating is what i need?

also what rating should i get as i've seen this one and am wondering if it will do the job?

http://www.maplin.co.uk/Module.aspx?ModuleNo=37526

--if so should i get the 40amp one?

also what does this part on the expansion bottle do?



--Also does anyone know if there is a fan switch which is the right size to screw into a M20 rad?

and heres the pic of the fan mounted on the rad



thanx in advance peeps!!

[leeparkes]

Dont know about the relay as im a pure mong when it comes to electrics but that thing on the bottle is the level sensor.

[ImysE30]

Which fan and what size fan did you end up using mate?

[Cypriotgeeza]

Well i still have the M20 rad and 14" fan on there but i havent driven it any distance to see if its actually good enough..

Lee says he used an M20 rad with no probs before..i dont know though something tells me its a little too small for the size of the engine..

When i finally get insured on it im thinking of replacing it!



thats a bigger pic of what mine looks like

[leeparkes]

This is the type ive got, maybe worth giving the guy an email as he seems to break old BMW's, ie rads/clutch's etc...

http://cgi.ebay.co.uk/BMW-E30-3-Series- ... 27b94ea957

[ImysE30]

Are you using that with an E28 535 rad Lee? Work well?

That's Boyd (cecotto479 on here) auctions.

[Rav335uk]

I'm using the E34 535 rad, fits fine, and a peugeot 307 electric fan, no issues

[ImysE30]

I've got a E28 535 rad (larger better one), just need a good fan to go with it now

[Rav335uk]

I've got a E28 535 rad (larger better one), just need a good fan to go with it now

Here, take your pick


http://cgi.ebay.co.uk/16-SLIM-PUSH-PULL ... 43a29bedd1

http://cgi.ebay.co.uk/14-SLIM-PUSH-PULL ... 43a29bf297

[ImysE30]

Will the 16" one be too big?

[Rav335uk]

Measure you rad, and the space where you want to fit the fan. only way of telling.

[ImysE30]

Was just thinking of that actually, dumb question really

[shedrool83]

I've got a E28 535 rad (larger better one), just need a good fan to go with it now

Here, take your pick


http://cgi.ebay.co.uk/16-SLIM-PUSH-PULL ... 43a29bedd1

http://cgi.ebay.co.uk/14-SLIM-PUSH-PULL ... 43a29bf297

I wouldn't go near these ebay cheap ones.
I fitted the 14" on when doing my m30 and after alot of head scratching and time trying to solve an overheating issue it was the fan that was at fault.Basically they produce very little air.

I fitted an m50 aircon fan to the m30 which works great and i have a 14" pacet on my m52 which works.

[ImysE30]

Cheers for that, i'll look into other options.

[Bristol_Jer]

I fitted an m50 aircon fan to the m30 which works great and i have a 14" pacet on my m52 which works.

Thats good to know they work well as I've got an m50 AC fan to use for my conversion