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Thread sealer for bolts into water.

Started by rexy , Jul 20 2014 05:59 PM

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21 replies to this topic

#1 rexy

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Posted 20 July 2014 - 05:59 PM

The intake manifold bolts on the BBC go into the water passages in the AFR heads. Do people have a preferred sealant they like for this application?

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#2 EunUCh

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Posted 20 July 2014 - 06:08 PM

Gm thread sealer #3835215

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#3 _Bomber Watson_

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Posted 20 July 2014 - 06:09 PM

I like using Loctite 567.

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#4 _Mint_

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Posted 20 July 2014 - 06:35 PM

yep im with EunUCh GM sealant for me ...the little tin on the right easy to dunk the bolts in

Edited by Mint Julip, 20 July 2014 - 06:36 PM.

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#5 rexy

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Posted 28 July 2014 - 08:19 PM

Thanks guys. Out of interest where did you get the stuff from? Dealer, autobarn, other?

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#6 UCgazman

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Posted 28 July 2014 - 08:58 PM

http://www.ebay.com....=item3a8c68aed7

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#7 71Ranger

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Posted 28 July 2014 - 09:33 PM

Hi Rexy,

We use loctite 567, and source it from the local bearing suppliers.

Cheers Brian

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#8 _Mint_

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Posted 30 July 2014 - 09:45 PM

Thanks guys. Out of interest where did you get the stuff from? Dealer, autobarn, other?

i got it from my local Holden dealer

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#9 rexy

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Posted 31 July 2014 - 09:29 AM

Hi Rexy,
We use loctite 567, and source it from the local bearing suppliers.
Cheers Brian

I think I have a tube of that somewhere in the shed. Will give it a go.
Thanks everyone.

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#10 _datpsi_

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Posted 05 August 2014 - 02:16 PM

Well this is something I've never experienced. .. Until 2 days ago. have always used loctite no.3 (aviation gasket) and ņot ever had an issue. Now mid head stud on Intake side of the 202 won't stop leaking. Tried with loctite 567 as recommended here and still leaking. Mayb 3 hours wasn't long enough to let it cure? ? Ideas?

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#11 _judgelj_

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Posted 05 August 2014 - 03:30 PM

Loctite no. 3 it costs under ten bucks. Wouldnt use it for headbolts but i did use it for a rocker stud that sits in water.

Gm sealer is dear as poison.

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#12 EunUCh

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Posted 05 August 2014 - 04:30 PM

This is going to be the most stupid suggestion... a bit of 5 minute Araldite.

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#13 _oldjohnno_

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Posted 05 August 2014 - 04:40 PM

This is going to be the most stupid suggestion... a bit of 5 minute Araldite.

Nothing stupid about that, epoxy is often used to seal pipe threads in industry.

I'd first check that there isn't a crack spreading out from the hole as the stud is tightened. If it looks ok clean the thread out thoroughly and reseal using 518. This stuff fills big gaps better than 567 and even though it isn't really meant for sealing threads I've found it works well where other products have failed. The only thing is you can't re-tension after it has gone off like you can with 567. It'd be fine for a mani stud though, and sets quickly.

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#14 _datpsi_

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Posted 05 August 2014 - 09:24 PM

Cheers guys. . As I said rebuilt the 202s plenty times fir the race cars and this never happened. Head was tested before reassembled so quite sure no cracks but will be checking tonight. Only real change is the mls head gasket so my problem may lie here.

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#15 _datpsi_

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Posted 05 August 2014 - 11:30 PM

Well sorry for the hijack. . Found my problem and it wasn't the basics. .. As usual. Small crack on machined area where head bolt washer would sit. Hopefully head can be saved. Not sure if water jacket sits below this or what extent the crack goes

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#16 _datpsi_

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Posted 05 August 2014 - 11:34 PM

Small water bubble. .

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#17 warrenm

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Posted 06 August 2014 - 12:00 AM

Irontite.

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#18 _datpsi_

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Posted 06 August 2014 - 04:42 PM

Warrenm, will the product do damage to fine core alloy radiators? Have emailed them and tried searching but cannot find the answer

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#19 warrenm

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Posted 06 August 2014 - 11:46 PM

From memory, you put the product in the cooling system, run it for a few days, then drain the water out & let the cooling system dry out, then fill with coolant again. I don't think you'll have any problems with the radiator. I used some in an engine some time ago, measured it into a jug put it in the engine then put the jug into a bucket that had water in it, got the jug out of the water the following day & the water had a fine membrane on the top similar to glad rap but not as thick, so I reacon it'll stop your leak.

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#20 _macdou_

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Posted 04 May 2015 - 05:49 PM

I went to a Holden dealer this morning to get some of their sealant 3835215 for my head bolts and they tell me it's not made anymore and there is no stock.

Found some on EBay and ordered one, doesn't seem to be much around..