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Red RTV vs oil pan by fieromatty
Started on: 02-08-2015 08:52 PM
Replies: 10 (441 views)
Last post by: Arns85GT on 02-14-2015 11:03 AM
fieromatty
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Report this Post02-08-2015 08:52 PM Click Here to See the Profile for fieromattyClick Here to Email fieromattySend a Private Message to fieromattyEdit/Delete MessageReply w/QuoteDirect Link to This Post
So I am putting my new engine back together (2.8). I purchased a new oil pan gasket, should i use rtv with the gasket, or will the gasket alone be fine.

Its the blue rubber felpro gasket incase your wondering.

Also, I am using red rtv to seal the timing cover and the water pump. Is that safe?
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fast40driver
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Report this Post02-08-2015 10:07 PM Click Here to See the Profile for fast40driverClick Here to Email fast40driverSend a Private Message to fast40driverEdit/Delete MessageReply w/QuoteDirect Link to This Post
Just my $.02 - but I have - and am currently assembling engines professionally, like a couple or three a week large diesels - every one dyno'd with YOUR name on it.

In general, pan gasket should be fine by itself, except for a dab at the four corners. It would not hurt on the timing cover - EXCEPT that silicone can be pretty slippery, and can cause the gasket to slip out of place. On the timing cover, I would glue the gasket to the hardest surface, in this case the block, with something like Gasgecinch - not sure of the spelling - which is basically a contact adhesive. Let it set, then put a THIN bead only of RTV on the gasket, going to the inside of the bolt holes, not the outside. I am not so keen on red RTV, much prefer Permatex "Right Stuff", faster setting, "Tackier". You can also use a VERY thin coat of "Right Stuff" to tack the gasket to the block, let dry for about 15-20 minutes, then install timing cover with a bead on the timing cover side.

Seriously, gaskets have come a long way since the days of tin timing covers and cork pan gaskets - most of the sealants are really no longer necessary, except for a little extra insurance - if properly applied.

Hope this helps,

MIke
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theogre
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Report this Post02-09-2015 12:07 AM Click Here to See the Profile for theogreClick Here to visit theogre's HomePageSend a Private Message to theogreEdit/Delete MessageReply w/QuoteDirect Link to This Post
RTV isn't used w/ most gaskets. High-Tack (HT) work w/ many gaskets but even has limits.

Follow directions w/ casket, Haynes, etc...
Some casket go dry or you will have problems.
Example: Many normal valve cover can use HT.
Use any sealer on L4 and FEL-PRO Part # VS50179T PermaDryPlus® and you will cause leaks.

Some gasket use very small amount of RTV only in splice zone, IE when two gasket pieces meet.
You engine oil pan gasket is one piece so doesn't apply here.
Timing cover might when meet oil pan depending on oil pan gasket.

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fieromatty
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Report this Post02-09-2015 01:48 AM Click Here to See the Profile for fieromattyClick Here to Email fieromattySend a Private Message to fieromattyEdit/Delete MessageReply w/QuoteDirect Link to This Post
I don't have gaskets on the timing cover and water pump. I just have the red rtv. Should i buy the gaskets and put them on with the rtv?
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masospaghetti
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Report this Post02-09-2015 09:35 AM Click Here to See the Profile for masospaghettiClick Here to Email masospaghettiSend a Private Message to masospaghettiEdit/Delete MessageReply w/QuoteDirect Link to This Post
This might not be technically correct, but - typically with paper-type gaskets, I like to use a thin coat of RTV, I think it helps fill any inperfections in the mating surfaces. It's inevitable that the surfaces have some scratches and nicks in them with age and disassembly. The RTV also helps hold the gaskets in place while you assemble the parts.

With a rubber-type gasket like an oil pan gasket I don't think the RTV is necessary.

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fieromatty
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Report this Post02-09-2015 10:19 AM Click Here to See the Profile for fieromattyClick Here to Email fieromattySend a Private Message to fieromattyEdit/Delete MessageReply w/QuoteDirect Link to This Post
I am going to get a gasket kit for the timing cover. They are only 10 bucks. Worth it to have them redone the way the manufacture intended.
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2.5
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Report this Post02-09-2015 11:53 AM Click Here to See the Profile for 2.5Send a Private Message to 2.5Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by masospaghetti:

This might not be technically correct, but - typically with paper-type gaskets, I like to use a thin coat of RTV, I think it helps fill any inperfections in the mating surfaces. It's inevitable that the surfaces have some scratches and nicks in them with age and disassembly. The RTV also helps hold the gaskets in place while you assemble the parts.

With a rubber-type gasket like an oil pan gasket I don't think the RTV is necessary.


I do that too.
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rogergarrison
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Report this Post02-13-2015 01:10 PM Click Here to See the Profile for rogergarrisonClick Here to Email rogergarrisonSend a Private Message to rogergarrisonEdit/Delete MessageReply w/QuoteDirect Link to This Post
I dont think my 05 Chrysler had any gaskets at all except the heads. Valve covers, pan and trans pan only had black RTV. My SuperBees 413 was put together using only RTV too...except the heads and exhaust manifolds.
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tebailey
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Report this Post02-13-2015 02:01 PM Click Here to See the Profile for tebaileyClick Here to Email tebaileySend a Private Message to tebaileyEdit/Delete MessageReply w/QuoteDirect Link to This Post
RTV has it's uses, but don't get carried away with it. I've tore down a lot of engines that were so gooed up with RTV that it plugged up the oil pick-up.
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sardonyx247
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Report this Post02-13-2015 02:31 PM Click Here to See the Profile for sardonyx247Click Here to visit sardonyx247's HomePageClick Here to Email sardonyx247Send a Private Message to sardonyx247Edit/Delete MessageReply w/QuoteDirect Link to This Post
This will answer ALL questions on what type to use where, with or with out a gasket.
http://www.permatex.com/product-selector
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Arns85GT
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Report this Post02-14-2015 11:03 AM Click Here to See the Profile for Arns85GTClick Here to Email Arns85GTSend a Private Message to Arns85GTEdit/Delete MessageReply w/QuoteDirect Link to This Post
I found that with the good oil pan gasket, I just needed a little of the tacky spray. If you use the cork gaskets though, you are well advised to seal them on both sides. That said, you should hand tighten any RTV and leave overnight before you torque the bolts.
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