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YankieSole

Senior Heliman

Lynchburg, virginia

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I aquired this 105hzr and a hitori pipe. My question is do I need the copper gasket or can I just use hi temp sealant like the previous owner? I just wanna make sure it's right.

Robert

08-10-2016 05:52 AM
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jhartsock3

Senior Heliman

Greenwood, IN

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I just use red rtv on mine

08-10-2016 07:05 AM
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banshee rider

Senior Heliman

n.e. illinois

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You can use either
This is what I use
It works very well

https://www.amazon.com/Permatex-818...e/dp/B0002UEOPA

ageing is manditory maturity is optional

08-10-2016 12:16 PM
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RPM 1.5

Key Veteran

Cape May New Jersey

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Yes Red RTV just clean off old and apply just a small amount new in same area are to much will clog glow plug
I put a little amount on pipe and Tap figure on extra and just leave a small amount muffler flange
Been using it for years

Ray

08-10-2016 12:23 PM
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Jeff polisena

Elite Veteran

westpalmbeachflorida usa

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Use 5 min epoxy, RTV can get in motor and fuel system and cause issues . Also epoxy cleans easy when taking pipe off and reinstalling . Put thin coat epoxy tighten pipe, fly to let pipe and motor heat up and tighten pipe screws to make sure sealed and your good .I don't use copper gasket for the reason that at the bolt holes gasket will crush and warp pipe manifold then leak .

I stole it ,flew it and gave it back ;)

08-10-2016 02:25 PM
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banshee rider

Senior Heliman

n.e. illinois

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Use 5 min epoxy, RTV can get in motor and fuel system and cause issues
And 5 minute epoxy cant wont hurt the engine ??

ageing is manditory maturity is optional

08-10-2016 04:12 PM
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Jeff polisena

Elite Veteran

westpalmbeachflorida usa

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No

I stole it ,flew it and gave it back ;)

08-10-2016 07:57 PM
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Ronald Thomas

rrMaster

Gainesville, Fl, USA

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That pipe won't work, you need to sell it to me

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

08-10-2016 07:58 PM
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YankieSole

Senior Heliman

Lynchburg, virginia

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Thanks guys

I think I'll try the epoxy first. Is there a certain 5 minute epoxy you use? Is there one better suited for heat?

Robert

08-11-2016 08:47 AM
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S.Dykes

Senior Heliman

Wesley Chapel, FL - USA

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Just regular 5 minute epoxy does the trick.
Heat is not a problem. Been doing it this way for years and tried the other methods as well. For me, it is the only solution for this application.

08-11-2016 12:57 PM
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ssrobzoom

Key Veteran

Tn

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I use a thin layer of JB weld and never had an exhaust leak.

Be sure to clean both surfaces with alcohol or lighter fluid and let dry before installation. Also, it's very easy to remove if you need to.

What ever you use, please sure to remove excess because it can end up on your glow plug which will, in most cases, ruin it!

08-11-2016 01:18 PM
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Jeff polisena

Elite Veteran

westpalmbeachflorida usa

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No particular brand , any two part 5 min epoxy will do the job . Make sure you tighten bolts again after motor heats up .

I stole it ,flew it and gave it back ;)

08-11-2016 02:00 PM
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da_man

Key Veteran

Northern CT

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I would just run it bare if you don't have the gasket. Your not going to hurt anything only some oil dripping between the connection intead of more at the exhust tip.

08-11-2016 04:52 PM
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Jeff polisena

Elite Veteran

westpalmbeachflorida usa

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^ that's not a fair statement . The pipe controls fuel flow so if there is a leak , yes oil will drop out but bigger issue is tuning motor . Motor can lean out inconsistently and its toast . Pipes are tuned for specific motors for a reason .

I stole it ,flew it and gave it back ;)

08-11-2016 08:00 PM
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GREYEAGLE

Elite Veteran

Flat Land's

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Pipe actually manufactures a Increase in Atmosphere Pressure / which charges the Atmospheric pressure in the tank - To Push the fuel or assist it to needed location.

Their is also the ventury effect of the carbi. The Suck

A Fuel Pump or Fuel regulator or a by pass circuit would control flow.

A precise line fit : 0/0 to each mating surface should seal, but their is a thermal transfer issue. Each material grows at a different rate : depending on the temperature.

Known as Delta - T > difference in Temp's between the two causes material creep.

Motor is Die Cast Aluminum { unknown } usually the manifolds are a CNC turning of a purer grade ALUM bar stock.

Why some exotic motors use Viton Gaskets and the manifold is held with springs - some even soft support the Muff.

I make mine out of Copper > Piece of cake - Good Heat transfer / No break down of epoxy glue.

Source supply would be a K&S Hobby metal supply at a hobby shop / just about any Craft supply store like a Hobby Lobby for crafter's.

greyeagle

08-11-2016 11:09 PM
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n8rloves2fly

Senior Heliman

omaha,ne USA

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Thin JB weld, it's an epoxy

08-12-2016 03:35 AM
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GREYEAGLE

Elite Veteran

Flat Land's

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Yup ! and it's very / very good Stuff ! Amazing under the right application's. Even drill / tapped it !! & Filed it to shape.
Its a metal powder filled resin why it's gray - with a Uber slow catalyst. Even rebuildt cast iron bearing seat's with the stuff or lock a bearing in a shot housing.

{ Weird } Never ever seen it form signs of rust - maybe a stainless alloy powder cause it's Non- magnetic.

Transfers Heat great too !

Tougher than the aluminum - Some times you can get away with some wild stuff. Some times - NOT

Bout the only way to get it off is either to abrade it, taking a risk to the foundation or to use a good soldering Iron & try to use the heat and a chisel point in the iron . Careful you don't scratch nothing like a seal surface.

Heat is your friend when it come to getting it off ; WORKs !

greyeagle

08-12-2016 04:05 AM
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YankieSole

Senior Heliman

Lynchburg, virginia

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Jb weld??

What happens when you have to take the pipe off for whatever reason tho? That stuff would be a real pain to get off the flanges right?

Robert

08-12-2016 06:31 AM
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Four Stroker

Elite Veteran

Atlanta

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Heat the parts up in your oven to 500F and the JR Weld is toast.

08-12-2016 02:26 PM
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Gary Steward

Senior Heliman

Senath, Missouri

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I'll agree that epoxy has better lasting qualities with fuel exposure

Gary Steward

08-19-2016 12:26 AM
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