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12g940 head on 1098 block which of these thermostat housings
Posted: Mon Aug 03, 2009 8:51 pm
by cormorant
Hi does anyone know which of these 2 thermostat housings,pictured below from MGB's, does the above conversion and lines up with the 1098 rad properly?<br>
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Posted: Mon Aug 03, 2009 10:06 pm
by bmcecosse
Probably the upper one in the pic. I just used the standard stat housing that came with the head - and a slightly 'bent' rubber pipe !
Top tip for any housing - run a drill bit down the holes to open them out v slightly, and smear grease (or copperslip) on the mounting studs before fitting.
Posted: Mon Aug 03, 2009 10:36 pm
by cormorant
Thanks bmc and yes I always grease the studs I remember having to hack a thermostat housing to bits years ago to remove the seized up mess!
Posted: Mon Aug 03, 2009 11:17 pm
by rayofleamington
yes - top one will do the job nicely
Posted: Tue Aug 04, 2009 12:04 am
by cormorant
thanks guys!
Thermostat housing
Posted: Tue Aug 04, 2009 6:53 am
by Declan_Burns
The top one is correct. It is part no. 12H797 from the pre 1967 MGB. It has to be dressed with a round file on one of the holes to fit-5min job.<br>
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Posted: Tue Aug 04, 2009 9:23 am
by cormorant
Wow thanks what a forum - even the part number and a picture! Thanks Declan
Posted: Thu Aug 06, 2009 1:17 pm
by Cam
I agree with the above and also the fact that the MG one has to have the holes 'dressed' to allow them to fit over the studs.
I bought one of those at this year's national and fitted it to my modified car (1275 head) and it lines up beautifully.
