Pressure testing and installing the repaired Vetus heat exchanger

[@AdversityZone]

30:20 the thermostat go's UNDER the gasket and sits directly on the block opening and the gasket go's on top of it

[@gojump69]

Yup - saw that as well. Dunno if it will make a difference though - tons of gasket sealer...

[@DDay9000]

@@gojump69 It will, the housing has a slight depression that the thermo sits in to hold and align it.

[@1breematt]

I picked that up too. It can be possible to crack the housing when doing the bolts up

[@HarleyRog]

The gasket should go round the thermostat (ie the thermostat should go through the gasket hole) not that it makes any difference because the stat is operated by water temp not block temp.) although I do agree the seal is from the stat flange to the block.

[@Thomas-ts2gl]

Working while trying to have a conversation makes it very hard to concentrate on what your doing ..

[@WindinyourSails]

Great job in fixing what was essentially a trashed heat exchanger. No reason why that repair should not last many years. Just shows that with a bit of ingenuity most things can be fixed at low cost. Thanks for sharing this, you may well have saved quite a few boaters a heap of money down the track.

[@DangarMarine]

Thanks mate, it will be interesting to see how it goes.

[@stephenspreckley8219]

What a shot! That coolant pour-in with no funnel!

[@thilltony3362]

Stu, Really enjoyed seeing a good old repair video. Having someone standing there watching every move tends to be a bit cringey and puts one off the normal routine, but he turned out to be a good sport and a decent helper. For sure, he will understand how much time even simple stuff takes. Looking forward to the next video.

[@timsaxer6442]

@Dangar Marine. Still really enjoy the peaceful interlude with Daisy and Daffy at the end of your videos. Please keep it up! Thanks, Stu! Watching from Fairbanks.

[@Swataia]

Nice job and funny to see that living on the opposite side of the world you still have the same Würth tools and chemicals as we do here!

[@DangarMarine]

The worlds workshops are familiar places for us all. :)

[@graemefenwick6925]

3:54 feed the shank of the tap up through the hole and tap up (instead of down). So long as you've got 1 full thread to align the tap and take it very slowly you're golden.

[@bloodyeyeful]

Had a cuo of tea and some fig newtons and your show before bed. Perfect evening. God Bless you and yours Dangar Stu.

[@darrensimpson6555]

Sounds like a perfect end to the day....

[@TimsWorkshopTJY]

Hi Stu, Good job on that one. Reminded me years ago helping a friend with his boat with two rebuilt 327 small block engines. I asked him what was wrong he said nothing he didn't know how to set the timing on the new rebuilds. We got there and the boat front was sunk at the marina but didn't get to the motors fortunately. Got the bulge pump working and start getting all that water out while I started on the motors. First thing I found was the distributors were both out 180 degrees. Got them set and hooked up my timing light. Both motors fired right up. He dry docked it the next day to find the bow had a leak and being a wood boat got into it and patched it up. It had twin brass props which was cool. The boat was a cabin cruiser from the 40's

[@DangarMarine]

Nice work. Sounds like he would have had a great boat once those few things were sorted out.

[@wobbo1969]

Good for my mental state seeing a couple of guys working on the boat and having a beer.... I'll be starting a wreck hunting/history channel soon, first episode in my Dangar T shirt as you've inspired me and kept me going. .......A homemade sidescan sonar towfish would be a good episode Stu ;)

[@DangarMarine]

Thanks mate, looking forward to checking out your vids.

[@wobbo1969]

@@DangarMarine Beauchief Wreck Divers on youtube...just started it! Just getting to grips with it all at the moment but should be out on the unknown wrecks end of the month. See how it goes, should be a laugh and thats all im doing it for :)

[@MeaHeaR]

Great Comradeship, see Adrian helping yoy and you Stu helping Pete. And showing us too. Great for the Successful Outcome too 👍👍🚣

[@DangarMarine]

Yes, the cycle of karma continues. :)

[@joemartin6439]

Dragon u are a miracle work . I sure hope I can made my 2008 a electric start . It is a two stroke. Cheers Johnnie

[@scubandrew]

i like this video 50 thumps up, what i like mostly about it, you went through the difficult part with your viewers incase we come across obstacles, thank Chief.

[@MikeM-of2if]

Good fix Stu!! 99% of people that would have seen that would have just bought a new one. Keep us posted on how long it lasts!

[@DangarMarine]

Will do!

[@scharftalicous]

Holy shit! You own your own helicoil box of tricks!? You sir, are the most professional hack that I have ever come across in my time of adventuring with hacks.

[@DangarMarine]

Thanks mate. ;)

[@boooshes]

Nice win for the port motor. I kept wondering when you were going to get out the spray bottle with soapy water in it. That could have saved a few trips to the dock.

[@DangarMarine]

Soapy water spray won’t show you if there is a leak between the core and the coolant reservoir. You need to see bubbles coming out of the filler neck to knock if there is a leak there.

[@boooshes]

@@DangarMarine very true, but if you're leak is in the hose setup or in an external seal, it sure finds it quickly. It's a good first check, that's all. And in this case ...

[@silasmarner7586]

Your chickens are very very spoiled. And it was nice of you to help out your mate, as you often do, Stu.

[@DangarMarine]

They are. It’s always good to hang out and play with boats. :)

[@brendonlagemaat3361]

Hi Stu , absolutely love your work area where you do all these projects with all your tools and equipment , it is the kind of workshop all Men need in their lives .

[@DangarMarine]

Wow, thank you!

[@TheBeaker59]

Just finished a similar job on my heat exchanger and I was shouting at the screen "YOU NEED A WASHER UNDER THE END BOLT"' sure enough you did I was quite smug until I realized I went through allot harder trials and tribulations with mine, and made some really dumb moves of my own. But mine works now and no doubt your mates one does too :)

[@DangarMarine]

Yes, all these jobs require a bit of trial and error when you do them for the first time. That's the joy of DIY!

[@JeffinLowerAlabama]

Very interesting Stu, great job on the port heat exchanger which looks and operates so much like new that the starboard heat exchanger got over heated with jealousy. Jeff in LA USA

[@DangarMarine]

I think you might be right Jeff!

[@russw5301]

I don't give the screwdriver handle too long inside the bottle Stu. Love the work though well done. Only one to go now!

[@wallyfirkins1664]

Stu, you are very resourceful! I guess that is what makes you able to do your thing. Also, very entertaining. Thank you.

[@DangarMarine]

I appreciate that, thanks for watching!

[@SidKneeGeo]

Sweet! something to watch on a rainy Sydney afternoon.

[@PittwaterMowingAustralia]

Same here mate

[@benwinter2420]

Sydney duck's . . were escaped convicts , they ended up in the original Barbary coast . . San Fran US . . the docks

[@SidKneeGeo]

@@benwinter2420 I didn't know about that, I just looked it up.. Very interesting

[@jonathansnoddy346]

I love the time-sert thread inserts you used. so much better than heli-coil repairs.

[@DangarMarine]

Yes, I really like the time-Serts too.

[@jonathansnoddy346]

@@cmmartti from my experience the heli-coil doesn't stay staked in place and come out with the bolt when removed. the time-set spreads as the insertion tool installs the insert. also the time-set is more readily accepting of thread locker when used. I guess heli-coils do have their area of use.

[@arnoldhughes5959]

👍thanks hope your well

[@bikemessenger7]

"every job you do gives you five more to do" man that's brilliant

[@4englishlies875]

The joy of boat repair ,when 1 is done another shows up. The never ending story.....lol great video, great DYI repair.

[@benwinter2420]

Any man that would go to sea for fun would go to hell for a holiday . . Joseph Conrad

[@johnstewart7022]

I might suggest retrofitting an exhaust manifold from and industrial or truck engine without a heat exchanger built in and using a plain shell and tube heat exchanger. You can use a header tank with radiator cap built in from a source of hot rod and race car parts. I've done this on several Isuzu and Perkins diesels in the past, with exhaust manifolds wrapped in non-asbestos wrap and it works fine. The manifold temperature stays lower than you'd expect. Make a wet elbow from stainless pipe fittings with a seawater injection pipe welded in. That way you'll have no sketchy aluminum parts exposed to seawater. Lobster fishermen in Maine often use this setup with a keel cooler made from copper tubing and a dry exhaust. Good Luck!

[@DangarMarine]

I agree, a separate header and heat exchanger would be a good upgrade that doesn't involve any custom marine parts.

[@robshannon8527]

Perfect way to end a snowy day in canada!

[@chrisspeer3257]

Same here in chicago were getting another round snow too lol

[@robshannon8527]

@@chrisspeer3257 stay safe in the snow. 10 inches in southwestern ont

[@Tom28770]

Same here in Houston

[@paulgallagher9734]

Great instructional video. Well explained and interesting as always. Good work Stu.

[@DangarMarine]

Glad it was helpful!

[@edac1078]

Good job. Thank you Stu.

[@DangarMarine]

Glad you enjoyed it

[@HarleyRog]

Tip for at 27.45 if you can’t find the hole, try putting a bit of hair round it, that usually helps.

[@adam56usa]

I’m learning so much from your site. Thanks Stu!

[@newjerseybill3521]

Stu, the Vetus part number for the aluminum manifold, heat exchanger housing is: STM7551

[@TR4zest]

It is about $800 AUS, so probably why attempting a fix makes sense.

[@DangarMarine]

That's without postage which would be quite a bit on a 7kg item.

[@chunkyharper9467]

We run that same orange rtv in place of header gaskets or exhaust gaskets on cars and trucks so they can handle a lot of heat and it works great and almost never leaks

[@DangarMarine]

It is great stuff for sure.

[@RoadhogRNA]

Looks like you guys did a fine job!!!

[@wackowacko8931]

The way they clean boilers (heat exchangers) in industry is to run hot moderately concentrated HCl (hydrochloric acid) mixed in water through them. The Cl atom combines readily with corrosion like Magnesium creating a water soluble salt (MgCl), which can then be flushed away with water. It produces Hydrogen gas, which needs to be vented properly during this operation. It doesn't attack metal because it isn't in situ long enough to do that, it is only in the heat exchanger for15-20 minutes.

[@DangarMarine]

Yes, we cleaned this one in hydrochloric acid too, does a great job.

[@theessexhunter1305]

In Egypt the boat crews would run a rope through the mooring bridles then back to the boat that way you have more control also the option to cut it if it is going wrong in a hurry. Good fix on the H Ex

[@DangarMarine]

I often need to do that on Renko because the bow is so high. It does give extra flexibility and the ability to cut as you say. I'd love to sail the Nile one day.

[@richardcranium5839]

@@DangarMarine there are lots of folks in de nile. not a good place to be.

[@thilltony3362]

Enjoyed seeing your broody hen. Chickens are funny. We got 16" of snow here- it's just melting - but our hens think it's spring. Normally, we are getting 2-3 eggs in February, but we got 18 eggs yesterday, out of 21 hens. The kicker is that half of them are old and stopped laying years ago. That's crazy. Seeing blue and green and pink and spotted eggs again. The old girls still have a few left when they feel like it! Seems like putting the remote door opener has something to do with it. Egg numbers have gone up consistently since then. Maybe they feel more secure at night? Or maybe the older hens are forced to smell the pheromones of the younger girls, and want to compete, since chickens compete at everything? Who knows, but we have lots of eggs for friends and family.

[@jimd3541]

He does a great job of videos. It reminds me of the grand Banks I bought in the first two weeks I rebuilt 14 water pumps mention it to the neighbors on the boat next door they said they're not surprised it hadn't been away from the dock and four years except for the sea trial. I asked them why they didn't tell me that when I was looking at it and they said they're friends of the owner and I asked him how come they didn't tell me Well now they're friends with the new owner they can tell me.

[@SoundzAlive1]

Stu I saw the recessed lip of hole where the thermostat went and thought it might go under the gasket? André

[@UrbanFisherman]

Great job

[@DangarMarine]

Thanks!

[@jimnash526]

Thanks for another excellent video !!!

[@DangarMarine]

Thanks for watching. :)

[@pwrplay8709]

Jumped back and watched again.. Great vid.. Thanks.

[@renhansen1246]

20:39 Stu, stainless is not as "brittle" as mild steel (it's actually quite tough). A470 grade SS bolts (probably the most common in Oz) have an ultimate strength of 700 MPa (not far below a Grade 8..8 of 800 MPa) but a much lower yield strength of 410 MPa (compared to 640 for a Grade 8.8), so SS bolts will "stretch" (elongate) for a if they are over-tightened without increasing their effective clamping force until they snap. (Clarified for the record)

[@DangarMarine]

Interesting to hear. I was always told that stainless was very hard to drill and cut etc but also one of the weakest bolts you can your from a tensile strength point of view. It's often seen stainless fastners that are over tightened just shear and then almost impossible to drill out.

[@stephengray1585]

@@DangarMarine All my years working with SS, you find out pretty quick that SS does not like heat.....if you overheat SS by drilling etc. and cause it to "blue" it's damn near bullet proof at that point. The trick is to use very low RPM drill speed (400rpm or lower) and lots of lube. I think the grade of SS may be a factor as well

[@renhansen1246]

@@DangarMarine Yes, in that case the bolt has "strain hardened" past its yield point for an A470 bolt of 410 MPa up to 700 MPa when it sheared/fractured (which is actually pretty close to a Grade 8.8 (800 MPa) high strength bolt)

[@Dan_C604]

Wow, amazing episode! There is some “Adrian” looks in you now :)

[@DangarMarine]

Thanks Dan!

[@TheTinski07]

I found the epoxy let go on my old ford heat exchanger after a season. Your prep was better than mine though. I've marinized a pair of Cummins truck engines on my channel. Used mani-headers and separate head exchangers, I think that is a much cheaper option if you have to replace the vetus ones.

[@DangarMarine]

I agree a set of separate headers and heat exchangers is probably a better way to go, there is no problem with space on this boat. I'll check out your marinisation vids!

[@davidcatanach2620]

Hey Stu, grab yourself a rifle bore cleaner kit with various caliber brush sizes, cheap tool to mechanically clean tubes like in the heat exchanger, if you can access both ends bore snake are brilliant.

[@DangarMarine]

Yes, brushes like that are great to clean out a tube.

[@bobbebbington5356]

Good work Stu. I like it when you think outside the box. Something you can try sometime for bolts that are subject to moisture, dip the threads in Stockholm tar

[@shanedavies9564]

Nice one Stu on the repair as for daisy yep got the same as but my other chook hilary isn't paying her rent in the coop where green eggs she is old and still producing lols look forward to next vid , cheers ,shaneo, nelson ,nz

[@ChrisSchroth]

I will watch the live stream of the outboard engine diagnosis and fix, Stu. Let us know when that will be aired.

[@DangarMarine]

Will do!

[@hughm5996]

Nice job with the time-sent. I’ve seen guys who claim to be pros install the insert above the surface and they won’t work and of course it’s not their fault.

[@bobjoncas2814]

...busy busy,,lol,, good one, keep safe and have a great week...

[@rodneymiddleton9624]

Nice repair Stu!!!!!!! Now you have to do the other one. Keep up the great work!!!

[@davidanderton2437]

Live stream outboard repair... Keen!

[@garydavo07]

Ps . Loved this video. Can wait for the starboard motor. Now you mate is trained, you should become the TA and let him do the work!

[@DangarMarine]

I filmed a video recently (not yet edited) where the friend did the work and I guided. Thinking of doing a series of vids like that.

[@jbuckley2546]

What I'd give for a few days on the water in that glorious weather. UK so depressing this time of year.

[@DangarMarine]

Hope the video helped a little bit.

[@weSteh]

This channel is awesome. Thanks

[@DangarMarine]

You’re welcome. :)

[@davidwoods7720]

Nice one Stu,keep up the good work and take care

[@DangarMarine]

Thanks, you too!

[@pwrplay8709]

thanks again.

[@kevgermany]

Nice. Must admit I was sceptical about the repair. Looks good, though. RTV, brilliant stuff, but has been the death of many engines sealing where it shouldn't. Good to see you using it very sparingly. I guess from the discussion that this has a wet exhaust.

[@DangarMarine]

Yes, you definitely need to make sure it doesn't migrate into places it shouldn't be.

[@nuggetwv5302]

Hey Stu, when you change that gasket on the thermostat, will you check to see if that thermostat goes under the gasket. I thought I saw a recessed cavity in the engine housing. I hope I'm wrong, just hate to see it crack the housing. Also might bring an extra thermostat incase I'm right and it crushed part of the flange of the thermostat. Good job on everything. Seeing you in that hull working makes me glad I don't work on boats! I would've had to cut more of the floor to get in there. Definitely deserves a beer after that!

[@hopsgarage5513]

For once my notification did there job, good work there sir.

[@DangarMarine]

Awesome, thank you!

[@TheCaptScarlett]

In this episode our hero Stu takes the role of Jedi Engine Master and Pete is the Padawan... 03:20 09:30 Good see Pete taking workshop safety seriously with the appropriate 'safety thongs' for footwear :) 20:30 but ditches them on his own boat I always find dies and tapping to create threads somehow magical - odd I know.

[@samarshall5327]

Great stuff guys - well done

[@DangarMarine]

Thank you kindly!

[@richardwernst]

well done

[@steveshoemaker6347]

Thanks again....My friend...Cheers

[@davidhudson5452]

Good Fix Round 2 Coming Up

[@rudywoodcraft9553]

enjoyable video thanks!

[@DangarMarine]

Our pleasure!

[@seanbaldeschwiler1891]

You can likely purchase aluminum plate and pipe and weld that onto the remaining metal. It will be much cheaper and if it doesn't work you could always fall back on having the piece machined. Just a thought.

[@DangarMarine]

Good tip!

[@VintageRestorationsAustralia]

Those ovehead reels are not quite Zane Grey era but they sure have some vintage old school cool Stu

[@DangarMarine]

I still need to give them a service, must get onto that. When are you coming for a fish?

[@littlezero6399]

Tan me hide when I’m dead Fred. Tan me hide when I’m dead. Song was stuck in my head the whole video.

[@Hoaxer51]

Littlezero, so they tanned his hide when he died Clyde, And that’s it hanging on the wall!

[@charlesdavis4396]

I know I have commented before. Have you ever tried Permatex "The Right Stuff"? Used it on water and rear differential on my diesel. Never a leak.

[@benwinter2420]

Adrian has humbled us

[@paulteirney3587]

If you cut the end off the heat exchanger be sure that the alum is not corroded as if you try to weld it it will explode as the salt and the alum when heated turns to hydrogen as I have had this happen to me twice and what a mess of the alum it makes.

[@adamheazlett1179]

Stainless has pretty good tensile strength but low sheer point like most hi- tensile

[@bobbuilder5362]

Depends on the grade.

[@landlifem5872]

@@bobbuilder5362 Agreed, stainless is a very broad term, so many different grades, some grades that are classes as stainless will actually rust, some will just dull and some will always maintain shine, just an indication of the great visual differences, but when talking tensile strength, shear strength, hardnesses, so many variables including chemical makeup , cast or forged and heat treatment

[@bobbuilder5362]

@@landlifem5872 Yes it is a very broad term, so to speak in generalities is pointless.

[@jeremykamel9655]

Nice repair. The only issue with cutting the end of the other one is it’s cast aluminum. Welding cast aluminum is rarely successful. I’d consult a welder before you have take the plunge. I’ve never had any success welding cast aluminum’s. I can weld cast iron all day long. It’ll have to be TIG but even that is difficult. Cheers Jeremy K.

[@DangarMarine]

Thanks Jeremy. Yes, I think it is a high risk approach. So many different types of alloy mixed together.

[@tonysargent1699]

Cool vid Stu, cheers! 🍻

[@donniediamond1411]

On a boat, on an island, with a buddy, with some beers and fixing things...

[@DangarMarine]

Not a bad day. :)

[@SeanSmith-bg7jo]

Keep them coming! Love the content!

[@nferraro222]

I might've missed something, but I think the overheating engine was the one not running a thermostat? Depending on the engine and cooling system design, some engines WILL overheat without a thermostat. The coolant is moving way too fast for proper heat transfer.

[@honorharrington4546]

Liquid to Liquid is more efficient than Liquid to Air so it is probably plugged passages in the exchanger. You are correct about coolant needing time in the radiator to shed heat and a missing thermostat can lead to overheating.

[@nferraro222]

@@honorharrington4546 Ahh...my lack of boating experience is showing, again:)

[@honorharrington4546]

@@nferraro222 The Liquid to Liquid efficiency is how the heat exchanger can be only around 3" in diameter and about 18" long. We are all here to be entertained and to learn something new. :)

[@DangarMarine]

Yes, the heat exchanger on the starboard side needs to have the tubes cleaned out.

[@rxcalvosa]

. A solid flow of water should have the same conductivity as a stationary mass of water. There are many variables but none of them are enough to justify a blanket statement that some marine engines will overheat because they don't have a thermostat. An automobile is an entirely different story since the coolant needs to be held in the radiator for a longer period of time to cool down. Ipso fatso, thermostat in car aids cooling, thermostat in a boat keeps the engine warm enough to run right.

[@mobiousenigma]

thanks for the video ! i suspect that going the aluminum replacement machining will cost more than a replacement unit...its part of our design for throw away consumption society problem where most things are no longer serviceable,,,

[@DangarMarine]

Yes, I suspect you might be right.

[@PittwaterMowingAustralia]

Great stuff Stu You can fix anything Ill call you when I next breakdown :)

[@DangarMarine]

LOL

[@ChiefStones]

I love your videos!

[@DangarMarine]

Thanks mate!

[@lukeskywalker2481]

Generally there is a long generally brass/ copper alloy stud that runs right through the heat exchanger to hold the end caps on, generally of course, highly dependent on make/model, personally never seen an actual thread into a heat exchanger?? Maybe I have been enlightened by this video 😜

[@TheJustonemore]

My Volvo penta is a Chevy small block 350

[@andrewgray1949]

I used to have a Volvo Penta based on a Renault block (AQD29 / AQD32) - they're all pretty incestuous - Driving a volvo V50 estate and much of the brake system is ford (Still cheap and easy to get parts)

[@bradenwuesthoff5639]

Same here, 03 four winns horizon 240. Volvo penta 5.7, GM Block but they put forged crankshafts and different oil pumps in for the constant high rpm

[@observerfrequency4725]

Hey Stu, did you have any more vids of your trip south? And i hope your mate in this one stocks Renko with some good whisky, or something for all your hard work.

[@DangarMarine]

Do have some extra footage that I still need to edit.

[@CEverett55]

Hey Pete, wassup!

[@graemethomson5167]

Yippee I'll get a good night's sleep tonight..fun with Stu 😎😎

[@DangarMarine]

Enjoy! :)

[@graemethomson5167]

Pressure testing a Vetus...bla bla bla haven't a clue about engines.. I watch for the Hens been a fan since they were eggs 🌷😎

[@timjohnun4297]

Not sure whether the screwdriver will last longer in the metho than in the boat - please let us know

[@airwolf12999]

Isnt it normally thermostat then gasket followed by housing? Looked like there was a lip for the thermostat to sit in... other wise love the vids. Wish I could find one of them as a project here in the states.

[@dtreloar63]

I thought the same thing...

[@jimterracall6766]

Pretty sure this is in Australia so it’s backwards and upside down. It’s how they like it down there.

[@darrenjohnson4482]

possibly too many Coopers consumed during the course of the repair.

[@darrenjohnson4482]

I see the problem now it was VB not Coopers

[@DangarMarine]

Too busy yacking to each other. 😝 I’ll swap it over when the new ones arrive and we do the starboard.

[@garydavo07]

5:31 don't knock it off the bench stu!! if it hits the concrete, it breaks. many Tears!!!!

[@mauser8989]

Could that be a MHI S4S? I see them every day but I never get to work on them as there is never anything wrong with them :)

[@AlisonFort]

Poor Daisy does try hard with her eggs! She’s such a loveable chuck

[@DangarMarine]

She sure is. :)

[@gordiebrooks]

Boxing Day 2020 seems like a lifetime away now 😩

[@krissfemmpaws1029]

Sweet we have snow on the ground and Stu pops up... Stu I have done weld repairs to cast aluminum manifolds... to be very honest there is no easy way to repair them. What you have done is about as good as anything that can be done. Your comment on cutting the end off and welding a plate on is a poor idea because you will have two or three different aluminum alloys in close proximity with copper/bronze alloys is the making for corrosion issues that will be bigger than what you had over time. What would be a better idea would be to put the manifold in brown vinegar let it eat away the corrosion then weld up the corroded areas and machine those surfaces. I'll let you know your tig welder doesn't have the amperage needed to do proper welds on that manifold. It will take 300 to 350 amp tig welder to get the heat into that manifold for good welds. You will be floating corrosion and contamination out of the casting as you are welding so keep a die grinder with a course burr handy. Did anyone check to see if the right anodes were put in the heat exchanger? Aluminum uses a different anode alloy then used on steel or cast-iron components.

[@ysesq]

nice

[@lawrencecarpenter638]

I would have waited for the RTV to completely dry before adding a psi test Stu.At least 24 hours of cure time.

[@DangarMarine]

The o-ring should do the sealing, the RTV is really just a backup.

[@cw3339]

What no never seise on those exhaust bolts?

[@tc3728]

Stu starting to sound like Adrian now! 😀

[@DangarMarine]

He's a bad influence. ;)