Author Topic: help me choose a new radiator  (Read 331 times)

Offline ADRay

help me choose a new radiator
« on: October 21, 2017, 07:27:28 AM »
I need to replace the radiator for my 998cc motor, but the situation is a little unusual. The head is a ported and polished unit that was installed 3 years ago. it is unusual in that it doesnít have a port for the temp sensor. There seem to be a lot of choices as far as material or number of cores, and I want to make sure I choose the right one.

I want to do three things:

1: Replace radiator and all hoses
2: somehow reinstall the temp sending unit (drain plug port on radiator?)
3: possibly remove the heater

Thanks
1982 Mini 1000 HL

Offline 94touring

Re: help me choose a new radiator
« Reply #1 on: October 21, 2017, 08:12:43 AM »
Tap and die the head for the sensor in the stock location.  Buy chinese aluminum radiator off eBay.  Why do you want to remove your heater?

Offline MPlayle

Re: help me choose a new radiator
« Reply #2 on: October 21, 2017, 08:47:37 AM »
Is there a plug in the hole for the standard location in the head is is it not drilled?

The replacement 998 head I recently got has a plug that can be removed in order to install the temperature sensor.


Offline MiniDave

Re: help me choose a new radiator
« Reply #3 on: October 21, 2017, 09:36:02 AM »
Would this work?

Otherwise, it's fairly easy to drill and tap the head for the sensor, it's usually a pipe thread, and you can buy pipe taps at any hardware store....just get the right one. If you use this housing you need the temp sensor that fits it - a 10 mm thread rather than pipe thread.

http://www.minispares.com/product/Classic/Engine/Cylinder_heads/Head_components/PEQ10010.aspx?100402&ReturnUrl=/search/classic/thermostat housing.aspx|Back to search

« Last Edit: October 21, 2017, 09:42:10 AM by MiniDave »
1989 Cooper Racing Green
2009 Clubman S
1969 Jaguar XK-E FHC
2004 Audi Allroad 2.7 TT

Offline MiniDave

Re: help me choose a new radiator
« Reply #4 on: October 21, 2017, 09:39:15 AM »
I like these radiators......not necessarily this exact one, although this one is good cause it has the petcock drain with it....and look at the price!

https://www.ebay.com/itm/Aluminum-Radiator-For-67-91-AUSTIN-ROVER-MINI-COOPER-MORRIS-ALL-MODELS-MANUAL-/332251904678?hash=item4d5bc1baa6:g:A94AAOSwd4tUD-nk&vxp=mtr



This one is made slightly differently but still has a drain plug.

https://www.ebay.com/itm/50-mm-2-rows-Aluminum-Radiator-for-AUSTIN-ROVER-MINI-1275-GT-1959-1997-Manual-/121631809037?hash=item1c51d21e0d:g:8EkAAOSwPgxVOh1T&vxp=mtr



That's the rad I've put in several cars and even on long highway runs on extremely hot days it does not run hot -stays dead in the middle of the gauge. For the money I think these are a great deal.
« Last Edit: October 21, 2017, 09:48:32 AM by MiniDave »
1989 Cooper Racing Green
2009 Clubman S
1969 Jaguar XK-E FHC
2004 Audi Allroad 2.7 TT

Offline 94touring

Re: help me choose a new radiator
« Reply #5 on: October 21, 2017, 10:21:45 AM »
Yeah those ebay rads are hard to beat.  I've probably installed half a dozen or more. Just make sure of the thickness.  Some are 45mm and other's 50 or 52. I think I have a 52, lots of capacity!

Offline MiniDave

Re: help me choose a new radiator
« Reply #6 on: October 21, 2017, 11:28:11 AM »
yeah, the 52 mm work well....
1989 Cooper Racing Green
2009 Clubman S
1969 Jaguar XK-E FHC
2004 Audi Allroad 2.7 TT

Offline ADRay

Re: help me choose a new radiator
« Reply #7 on: October 22, 2017, 07:33:55 AM »
thanks everyone. seems I need to look out for thick a walled unit more than anything.

I had thought of drilling and tapping the thermostat housing, much like that unit. Would that fit my head? another option is maybe on the heater outlet port if I remove the heater, but I donít think Iíll have the back spacing though.

This is the corner of the head where the port should be. While drilling & tapping would probably be best, Iím not keen on taking it apart to do so at this point


« Last Edit: October 22, 2017, 07:38:33 AM by ADRay »
1982 Mini 1000 HL

Offline MPlayle

Re: help me choose a new radiator
« Reply #8 on: October 22, 2017, 08:37:32 AM »
Interesting that your head does not even have the flat spot in the casting for drilling and tapping a temperature sensor hole in the normal place (below the thermostat).

I would try going with something like the thermostat housing Dave posted.


Offline tmsmini

Re: help me choose a new radiator
« Reply #9 on: October 22, 2017, 11:22:21 AM »
DSN Retrosport also have thermostat housing with temp sensor ports.
I may have one of the ones that Dave posted. (Edit: can't seem to find it)
How early is the car? The early MK I's with the radiator shroud on the inside fender can require some modification if using a non-standard radiator.
Terry
« Last Edit: October 22, 2017, 01:27:05 PM by tmsmini »