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Sealant around engine block coolant neck? #995508 05/19/11 11:14 AM 05/19/11 11:14 AM
Joined: Jan 2003 Posts: 7,541 Albany, NY 67SATisfaction OP The member whose name is actually Art
67SATisfaction OP The member whose name is actually Art Joined: Jan 2003 Posts: 7,541 Albany, NY	I've got some pitting on the coolant neck at the top of my engine block, and I want to avoid seeping coolant on my brand-new restoration. Has anyone used sealant that works well other than RTV silicone? I don't want it to be totally stuck on if I have to replace it sometime, so I was thinking of the non-hardening intake manifold sealant. Any recommendations are appreciated. Thanks, -Art Last edited by 67SATisfaction; 05/19/11 11:24 AM. 65 Satellite hardtop 361/4bbl console 727 2.76 67 Satellite convert 383/2bbl column 727 3.23 67 Lancia Fulvia Sport 1.3 Zagato. Alloy body, 1.3L V4 DOHC 4-spd 67 Lancia Fulvia Rallye 1.3. Alloy panel, 1.3L V4 DOHC 4-spd 71 Alfa Romeo GT Junior 1300 Zagato, 1.3L 4cyl DOHC hemi 5-spd 82 Alfa Romeo GTV6 2.5L SOHC hemi V6 5-spd transaxle 75 Maserati Bora US spec 4.9L DOHC hemi V8 5-spd ZF 77 Maserati Khamsin Euro spec 4.9L DOHC hemi V8 5-spd ZF 07 Aston Martin DB9 6.0L DOHC V12 6spd transaxle

Re: Sealant around engine block coolant neck? [Re: 67SATisfaction] #995509 05/19/11 11:23 AM 05/19/11 11:23 AM
Joined: Jan 2003 Posts: 5,281 In a town not near you. C clownzilla
clownzilla C Joined: Jan 2003 Posts: 5,281 In a town not near you.	I had the same problem on the top of my intake and nothing I tried would seal it from seeping until I took a flat sharpening wet stone to the top of the intake to file down the pitting, then I used the red high temp RTV sealant at the bottom of the T stat housing gasket and have not seeped a drop since. I use a billet steel housing, never chrome. Some guys may have better solutions but that's what worked for me. The early bird gets the worm, and the second mouse always gets the cheese.

Re: Sealant around engine block coolant neck? [Re: clownzilla] #995510 05/19/11 12:07 PM 05/19/11 12:07 PM
Joined: Jan 2003 Posts: 21,074 Niles , Ohio T therocks oh wait.but hey.lets see.oh yeah.
therocks oh wait.but hey.lets see.oh yeah. T Joined: Jan 2003 Posts: 21,074 Niles , Ohio	Permatex brown.I use it all the time.It dosent hard and stops any minor leaks.Rocky Chrysler Firepower

Re: Sealant around engine block coolant neck? [Re: therocks] #995511 05/19/11 01:28 PM 05/19/11 01:28 PM
Joined: Jan 2003 Posts: 1,252 Slidell, LA Ronnman pro stock
Ronnman pro stock Joined: Jan 2003 Posts: 1,252 Slidell, LA	Permatex Hylomar http://www.amazon.com/Permatex-85249-Hylomar-Universal-Dressing/dp/B0018PSATY

Re: Sealant around engine block coolant neck? [Re: 67SATisfaction] #995512 05/19/11 04:21 PM 05/19/11 04:21 PM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	Permatex #3 brush on, on a gasket live every 24 hour block of time like it's your last day on earth

Re: Sealant around engine block coolant neck? [Re: RapidRobert] #995513 05/19/11 11:44 PM 05/19/11 11:44 PM
Joined: Jan 2003 Posts: 7,541 Albany, NY 67SATisfaction OP The member whose name is actually Art
67SATisfaction OP The member whose name is actually Art Joined: Jan 2003 Posts: 7,541 Albany, NY	Thanks gentlemen! - Art 65 Satellite hardtop 361/4bbl console 727 2.76 67 Satellite convert 383/2bbl column 727 3.23 67 Lancia Fulvia Sport 1.3 Zagato. Alloy body, 1.3L V4 DOHC 4-spd 67 Lancia Fulvia Rallye 1.3. Alloy panel, 1.3L V4 DOHC 4-spd 71 Alfa Romeo GT Junior 1300 Zagato, 1.3L 4cyl DOHC hemi 5-spd 82 Alfa Romeo GTV6 2.5L SOHC hemi V6 5-spd transaxle 75 Maserati Bora US spec 4.9L DOHC hemi V8 5-spd ZF 77 Maserati Khamsin Euro spec 4.9L DOHC hemi V8 5-spd ZF 07 Aston Martin DB9 6.0L DOHC V12 6spd transaxle

Re: Sealant around engine block coolant neck? [Re: 67SATisfaction] #995514 05/19/11 11:54 PM 05/19/11 11:54 PM
Joined: Jan 2007 Posts: 7,664 IN A ahy master
ahy master A Joined: Jan 2007 Posts: 7,664 IN	File and smooth as best possible and Permatex #1 (brown). It seems to work much better than RTV in this app.

Re: Sealant around engine block coolant neck? [Re: ahy] #995515 05/20/11 12:34 AM 05/20/11 12:34 AM
Joined: Jan 2003 Posts: 20,812 A collage of whims topside Too Many Posts
topside Too Many Posts Joined: Jan 2003 Posts: 20,812 A collage of whims	What ahy sez: gotta have flush smooth surfaces, then the Permatex. I like anti-sieze or bolt-prep on the bolt threads, too. And test your thermostat in some boiling water with a thermometer before installing it.

Re: Sealant around engine block coolant neck? [Re: Ronnman] #995516 05/20/11 01:09 AM 05/20/11 01:09 AM
Joined: Sep 2009 Posts: 270 Spokane Valley WA D dan6412 enthusiast
dan6412 enthusiast D Joined: Sep 2009 Posts: 270 Spokane Valley WA	Quote: Permatex Hylomar http://www.amazon.com/Permatex-85249-Hylomar-Universal-Dressing/dp/B0018PSATY I usee it alot on my engines. Works great on valve covers too. Never gets hard 6642035-IMAG0164.jpg (32 downloads)

Re: Sealant around engine block coolant neck? [Re: topside] #995517 05/20/11 04:30 PM 05/20/11 04:30 PM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	Quote: What ahy sez: gotta have flush smooth surfaces, then the Permatex. I like anti-sieze or bolt-prep on the bolt threads, too. And test your thermostat in some boiling water with a thermometer before installing it. X 2 live every 24 hour block of time like it's your last day on earth

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