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Fan bolts.
Posted: Thu Jun 29, 2023 11:36 am
by Classiccars
Hi could someone please advise the size of the 4 bolts holding .the two blade fan to the water pump please as may need some.
Re: Fan bolts.
Posted: Thu Jun 29, 2023 12:10 pm
by geoberni
I believe the data you are looking for, and many others sizes, can be found on this page:
viewtopic.php?p=491248#p491248
Re: Fan bolts.
Posted: Thu Jun 29, 2023 12:23 pm
by Classiccars
Quarter inch thank you.Any idea of body length of the bolt please.
Re: Fan bolts.
Posted: Thu Jun 29, 2023 2:08 pm
by philthehill
1/4" UNF x 3/4" length should see you right.
Re: Fan bolts.
Posted: Thu Jun 29, 2023 2:09 pm
by geoberni
Well it's part number is HZS0405 and it's actually a screw because it's fully threaded.
Searching for that number seems to indicate that it's 5/8", which sounds about right.
Re: Fan bolts.
Posted: Thu Jun 29, 2023 5:38 pm
by oliver90owner
I would advise the poster to measure the threads on the pump hub, add the thickness of the fan and any washers used then buy set-screws of appropriate length. It’s not rocket science.
Re: Fan bolts.
Posted: Thu Jun 29, 2023 6:09 pm
by Classiccars
Wise words from all rhanks
Re: Fan bolts.
Posted: Thu Jun 29, 2023 6:18 pm
by les
3/4 inch long set screw
Re: Fan bolts.
Posted: Thu Jun 29, 2023 6:36 pm
by geoberni
I guess either 5/8" or 3/4" will do.
I just spent a few minutes taking one out of mine, and it's 5/8", but ESM & Moss both offer a 3/4" as the spare.
The extra 1/8" won't do any harm as there's space there before it fouls on the pump body....
Re: Fan bolts.
Posted: Fri Jun 30, 2023 6:22 pm
by Classiccars
Great advice as ever thank you all.
Re: Fan bolts.
Posted: Fri Jun 30, 2023 6:23 pm
by Classiccars
Thanks all very much.