× 1-800-946-2642 Home My Account Social / Forum Articles Contact My Cart
Shop Now
Select Your Car Type Sale Items Clearance Items New Items
   Forum Width:     Forum Type: 

 Posted: Nov 24, 2022 06:43AM
Total posts: 248
Last post: Dec 5, 2022
Member since:Feb 12, 2022
Cars in Garage: 0
Photos: 0
WorkBench Posts: 0
the late great Big Al Guest. showed me trick  on the SPI/MPIs.. temp problems... drill six small holes in the thermostat  when the water flows quicker.. BUT. do NOT take out the thermostat..  pHD>

 Posted: Nov 23, 2022 11:47PM
Total posts: 10163
Last post: Nov 27, 2022
Member since:Mar 24, 1999
Cars in Garage: 0
Photos: 0
WorkBench Posts: 0
GB
I seem to remember that unleaded fuel needs to run hotter to burn with maximum efficiency, so that may be why it runs so much hotter than seems sensible.  The extra efficiency of the front mounted radiator may also play into that.

 Posted: Nov 23, 2022 03:10PM
Total posts: 362
Last post: Dec 6, 2022
Member since:Jul 26, 2010
Cars in Garage: 0
Photos: 0
WorkBench Posts: 0
The MPI's do seem setup to run hotter than you would expect.

I've had to trouble shoot a couple and discovered that the boil over point is only around 5 degrees higher than 105c when fan is supposed to kick in.

Settings seem way too close to disaster for my liking but that's how they made them. I guess higher temp to reduce emissions was the goal.

 Posted: Nov 22, 2022 03:15PM
Total posts: 10
Last post: Dec 6, 2022
Member since:Mar 4, 2021
Cars in Garage: 0
Photos: 0
WorkBench Posts: 0
Good grief, thanks MPlayle, should have known it would be in a manual somewhere. That seems awfully hot, but I suppose rover probably knew what they were doing.. I know I haven't let it idle long enough to see that sort of heat. May pull the sensor and try heating it up another way to verify its all working. 

 Posted: Nov 22, 2022 02:14PM
Total posts: 1780
Last post: Nov 22, 2022
Member since:Feb 1, 2000
Cars in Garage: 0
Photos: 0
WorkBench Posts: 0
According to the Haynes manual (1969 to 2001), the front mounted MPI fan comes on at 105C (221F) and off again at 98C (208F).

(See the "Specifications" section at the start of chapter 3.)

 Posted: Nov 22, 2022 02:03PM
Total posts: 248
Last post: Dec 5, 2022
Member since:Feb 12, 2022
Cars in Garage: 0
Photos: 0
WorkBench Posts: 0
805 Minis.. I had some trouble in the past.. I just hot wired the fan to runs all the time.. you can buy after market fans from Rimmer Bros in the UK.. or on ebay.com for about $50.... PHD>.

 Posted: Nov 22, 2022 10:21AM
Total posts: 10
Last post: Dec 6, 2022
Member since:Mar 4, 2021
Cars in Garage: 0
Photos: 0
WorkBench Posts: 0
Tuning up a nice little MPi but unsure if the electric cooling fan is working properly. Runs great and stays cool while driving, but at idle without any airflow Im not sure how hot I want to let it get. If I unplug the temp sensor in the thermostat housing, the fan kicks on, I assume due to a safety limp mode thing in case the sensor or wiring were to fail. I've let it sit and idle until I got a reading of a little over 200F using an ifrared thermometer and the fan has yet to come on on its own. Normal? How hot should I expect it to get before the electric fan kicks on? The sensor itself is a new OE unit.