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Thread: Thermostat

  1. #1
    Join Date
    Nov 2015
    Location
    Chattanooga, TN, USA
    Posts
    18

    Default Thermostat

    In doing some other work to my rover, I discovered that there was a standard (non-skirted) type thermostat installed. I know that the 2.25 petrols are supposed to use the skirted thermostats. I order a skirted type and I am puzzled hast to how it is supposed to fit. Please see my pictures and let me know what I am missing here.

    Old thermostat in housing:
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    Housing:
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    New thermostat in housing:
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    New thermostat in house with top sitting on thermostat:
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    Old and new thermostat:
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    '68 Series IIA SWB - 2.25L Petrol

  2. #2
    Join Date
    Nov 2006
    Location
    Mass.
    Posts
    1,796

    Default

    Just a guess but perhaps your thermostat housing and\or cover are meant for the older bellows type thermostat?
    Jason
    "Clubs are for Chumps" Club president

  3. #3
    Join Date
    Nov 2015
    Location
    Chattanooga, TN, USA
    Posts
    18

    Default

    That's what I'm guessing too after further research; although, I'm a little surprised given that the truck is a '68 and they had been using wax type thermostats since '63.
    '68 Series IIA SWB - 2.25L Petrol

  4. #4
    Join Date
    May 2014
    Location
    Marblehead, MA
    Posts
    383

    Default

    My truck is a 68 as well. The thermostat housing on mine does not have the indents on the side like yours does. I replaced my skirted thermostat with an identical (to your new one) skirted type about a year ago and it fit with no issue. It appears you have an older housing... What's the engine number out of curiosity?
    1968 Series IIa
    1997 Defender SW (Original Owner - Sold)

  5. #5
    Join Date
    Nov 2015
    Location
    Chattanooga, TN, USA
    Posts
    18

    Default

    Engine # is 251189408
    According to http://www.glencoyne.co.uk/engno.htm it should have 7:1 head but it has 8:1. I'm guessing the engine was frankensteined from several vehicles at some point.
    If you can tell me more about my engine based on the number, I'd be interested to know. Chassis # is 24434111D
    '68 Series IIA SWB - 2.25L Petrol

  6. #6
    Join Date
    May 2014
    Location
    Marblehead, MA
    Posts
    383

    Default

    My truck is 98 units apart from yours. I'm 24434013D. My engine is a Frankenstein as well - block and head were swapped in from a later Series 3 (engine block number is 95132560E also an 8:1) but I believe most of the parts - Thermostat housing, etc - are from the original engine. The parts manual specifies the wax type/skirted from engine suffix D onwards - see item 21 in the image below. Does your engine number end with a D or E?

    I will PM you as well.

    Click image for larger version. 

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    1968 Series IIa
    1997 Defender SW (Original Owner - Sold)

  7. #7
    Join Date
    Nov 2015
    Location
    Chattanooga, TN, USA
    Posts
    18

    Default

    It looks like it ends in an 8, but I'm guessing it's an E not an 8.
    '68 Series IIA SWB - 2.25L Petrol

  8. #8
    Join Date
    Nov 2015
    Location
    Chattanooga, TN, USA
    Posts
    18

    Default

    Back to my original topic. I am no closer to figuring out how to fit the skirted thermostat than I was before. I thought I needed a new lower housing, so I ordered one from our host, but it is no different and the thermostat doesn't fit down in it either (see 1st picture below). After more research, I found this blog post blog post that makes me think I need a new upper housing (aka outlet pipe): http://1960landroverrestoration.blog...d-housing.html
    (See 2nd picture below taken from the blog post, my upper housing is like the one on the right)

    But there are two problems with that, 1) a new upper housing (part 527109) is almost impossible to find and 2) I am still not sure the upper housing is the culprit here.

    Can someone please confirm for me whether the thermostat is supposed to fully fit into the lower housing or stickup into the upper housing? Does your thermostat upper housing look like the one on the right or the one on the left in picture 2 below?

    I am also starting to wonder if the thermostat I have is just not right, even though I am sure it is supposed to be an 82C land rover 2.25 thermostat.

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    '68 Series IIA SWB - 2.25L Petrol

  9. #9
    Join Date
    Jun 2021
    Location
    Helena, MT
    Posts
    9

    Default

    DSG85; I have the exact problem. My late 2A (1969 Bugeye) has the early T-Stat housing for non-skirted standard type therm. I am faced with sourcing a late 2a/3 housing with O-ring grove or just source a standard Thermostat.
    I am looking for a U.S. cross-over part # or vehicle make That will fit? Thanks.

  10. #10
    Join Date
    Jul 2020
    Location
    UK
    Posts
    257

    Default

    Quote Originally Posted by DSG85 View Post
    Back to my original topic. I am no closer to figuring out how to fit the skirted thermostat than I was before. I thought I needed a new lower housing, so I ordered one from our host, but it is no different and the thermostat doesn't fit down in it either (see 1st picture below). After more research, I found this blog post blog post that makes me think I need a new upper housing (aka outlet pipe): http://1960landroverrestoration.blog...d-housing.html
    (See 2nd picture below taken from the blog post, my upper housing is like the one on the right)

    But there are two problems with that, 1) a new upper housing (part 527109) is almost impossible to find and 2) I am still not sure the upper housing is the culprit here.

    Can someone please confirm for me whether the thermostat is supposed to fully fit into the lower housing or stickup into the upper housing? Does your thermostat upper housing look like the one on the right or the one on the left in picture 2 below?

    I am also starting to wonder if the thermostat I have is just not right, even though I am sure it is supposed to be an 82C land rover 2.25 thermostat.

    Click image for larger version. 

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    Click image for larger version. 

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    The deep skirt reaches up into the outlet as per left hand, with the O ring seal and according to my 1977 parts list was fitted to S2A suffix D onwards and S3 engines .The thermostat housing 516059 is common to both thermostats and the water outlet (upper) changes with the thermostat , so 527109 is the outlet for the deep thermostat. They do come up occasionally and Blanchard list it but at 99 plus carriage https://pablanchard.co.uk/Thermostat...5-litre-527109
    Your engine could be a Suffix B which often looks like an 8

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