900 thermostat O ring gasket

jpliddy · Oct 20th, 2018, 15:19

hi all i have just purchased a thermostat and O ring gasket for my 940 tdi i can't get the O ring gasket to fit into the engine block im told i have the wrong O ring the one from volvo dealers is different than the old one i took off the new O ring is square shaped with a small groove in the middle which does fit nicely round the outer edge of the thermostat . the old O ring sat on the outside face of the thermostat the stat is nearly the same size as the hole in the engine block so when O ring is fitted to outside edge it will not fit .
can any of you guys with the petrol engine tell me if you have a O ring that fits round the outside edge with the small groove . this will tell me for sure i have the wrong O ring . i have put the old O ring back and applied a small amount of HYLOMAR sealant this has stopped the leak i had for now
all comments most welcome .

Tyron760 · Oct 20th, 2018, 15:26

Redblock thermostat o-ring is the square type with groove.

jpliddy · Oct 20th, 2018, 17:26

hi thanks for your comment don't suppose you woud have the part number and spec of car ie 940 LTP and .year approx
regards jim

jor · Oct 20th, 2018, 19:53

If you have the incorrect O ring perhaps it came with the wrong thermostat? There's no shortage e.g. item 2325937608, which is QH and as a bonus is the higher temp 92 degree opening one.

jor

jpliddy · Oct 20th, 2018, 20:24

hi jor
the stat ive just got is exactly the same as the stat i put in the car D 24 2 years ago . i only need the O ring really but got the stat to as they are not that expensive well £ 18 for stat and 0 ring take it you have replaced your stat on the D24 too over time just hope the new O ring is the same as the original one do you have any part numbers ?

jor · Oct 20th, 2018, 21:53

No numbers I'm afraid, but it's always difficult trying to find a part gasket minus part. I think it will be carry on with the old one and hope it lasts, or part with a few quid.

jor

Oct 20th, 2018, 15:19	#1
jpliddy VOC Member Last Online: Feb 15th, 2024 17:04 Join Date: Dec 2006 Location: stoke on trent	900 thermostat O ring gasket hi all i have just purchased a thermostat and O ring gasket for my 940 tdi i can't get the O ring gasket to fit into the engine block im told i have the wrong O ring the one from volvo dealers is different than the old one i took off the new O ring is square shaped with a small groove in the middle which does fit nicely round the outer edge of the thermostat . the old O ring sat on the outside face of the thermostat the stat is nearly the same size as the hole in the engine block so when O ring is fitted to outside edge it will not fit . can any of you guys with the petrol engine tell me if you have a O ring that fits round the outside edge with the small groove . this will tell me for sure i have the wrong O ring . i have put the old O ring back and applied a small amount of HYLOMAR sealant this has stopped the leak i had for now all comments most welcome .

Oct 20th, 2018, 15:26	#2
Tyron760 No redblock? No comment! Last Online: Yesterday 14:59 Join Date: Aug 2013 Location: Herts	Redblock thermostat o-ring is the square type with groove. __________________ 760 turbo manual estate gold 1988 760 turbo auto saloon silver 1990 940 lpt classic auto saloon blackberry 1997 940 lpt classic auto estate tropic green 1997

Oct 20th, 2018, 17:26	#3
jpliddy VOC Member Last Online: Feb 15th, 2024 17:04 Join Date: Dec 2006 Location: stoke on trent	thermostat hi thanks for your comment don't suppose you woud have the part number and spec of car ie 940 LTP and .year approx regards jim

Oct 20th, 2018, 19:53	#4
jor VOC 20573 Last Online: Jul 10th, 2023 22:14 Join Date: Mar 2007 Location: wembley	If you have the incorrect O ring perhaps it came with the wrong thermostat? There's no shortage e.g. item 2325937608, which is QH and as a bonus is the higher temp 92 degree opening one. jor __________________ Volvo 940 SE 1994 D24Tic. BMW C1 85 mpg

Oct 20th, 2018, 20:24	#5
jpliddy VOC Member Last Online: Feb 15th, 2024 17:04 Join Date: Dec 2006 Location: stoke on trent	thermostat hi jor the stat ive just got is exactly the same as the stat i put in the car D 24 2 years ago . i only need the O ring really but got the stat to as they are not that expensive well £ 18 for stat and 0 ring take it you have replaced your stat on the D24 too over time just hope the new O ring is the same as the original one do you have any part numbers ?

Oct 20th, 2018, 21:53	#6
jor VOC 20573 Last Online: Jul 10th, 2023 22:14 Join Date: Mar 2007 Location: wembley	No numbers I'm afraid, but it's always difficult trying to find a part gasket minus part. I think it will be carry on with the old one and hope it lasts, or part with a few quid. jor __________________ Volvo 940 SE 1994 D24Tic. BMW C1 85 mpg

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