RC10GT Gas leakage normal?

RC10GT Gas leakage normal?

Post by Stephen Cheu » Fri, 14 Mar 1997 04:00:00



: Hey, I have an RC10GT with an HPI .15 SS and a Stinger exhaust on it,
: the .15 is new so we were just breaking it in the other day and here's

running it rich is always going to add to the amount of gunk stuck to your
car after a run.  

even after leaning things out a bit, there'll still be residue if the exhaust
flow exit is close to the vehicle.  i recently saw a setup with a
helicopter exhaust pipe which extended outside the body and about 3/4"
to the side, so all the exhaust residue was clear of the vehicle.  it sure
makes cleanup much easier, at the cost of a little power loss.  
                        -- stephen.
--
Stephen Cheung
512-916-8324 anytime.

 
 
 

RC10GT Gas leakage normal?

Post by Shane Arch » Sat, 15 Mar 1997 04:00:00


Hey, I have an RC10GT with an HPI .15 SS and a Stinger exhaust on it,
the .15 is new so we were just breaking it in the other day and here's
what happened.

When we were first starting and had the carb set really rich, fuel
would kick out the back (the exhaust) which I understand is normal for
running it really rich.  As the day wore on, we ran about eight more
tanks, progressively leaning up the carb.  

When we finally stopped, I was absolutely amazed at how much fuel had
built up on the left side of the truck.  The arm was covered with fuel
(and dirt and grime from the asphault (the truck is setup for asphault
oval right now)).  The engine and chassis and gearbox, right near the
engine -> exhaust connection (which I know is sealed) were virtually
soaked with fuel.  The other side of the engine and the rest of the
chassis, however, were fine.  None of the fuel tubes are leaking,
since the pressure was okay in the system.  It didn't look like the
engine was being flooded either.

Now I'm just wondering if this is normal or might I have a leak
somewhere?  I certainly hope not.  The engine itself performed fine,
never got too hot and had plenty of punch after we'd broken it in and
set the carb down to where it should be.

Do other people get this happening with the truck?  

Thanks.

Shane

 
 
 

RC10GT Gas leakage normal?

Post by Sabo » Sun, 16 Mar 1997 04:00:00



Quote:

>Hey, I have an RC10GT with an HPI .15 SS and a Stinger exhaust on it,
>the .15 is new so we were just breaking it in the other day and here's
>what happened.

>When we were first starting and had the carb set really rich, fuel
>would kick out the back (the exhaust) which I understand is normal for
>running it really rich.  As the day wore on, we ran about eight more
>tanks, progressively leaning up the carb.  

>When we finally stopped, I was absolutely amazed at how much fuel had
>built up on the left side of the truck.  

>Now I'm just wondering if this is normal or might I have a leak
>somewhere?  
>Do other people get this happening with the truck?  

Shane,
 Ive had two fuel leaks in my GT.  The first one was caused by
munching a head gasket, and the other was a cracked fuel tank.
I'm not sure what the HPI .15 looks like, but did you have a hard time
getting the MIP pipe's manifold to sit flush?  Have you had the head
off your engine yet?  If so, check to make sure your gasket didn't
move around on you.  I assume your Stinger pipe is the 360 degree kind
that puts the exhaust out behind the car?  Exhaust blowout really
shouldn't be a problem,  if that's the setup, as all the fuel blow
through should land in the dirt and not on your chassis.  
 To avoid the fuel tank leak, make sure you don't overtighten the tank
to the chassis.  Snug it, but that's all.  The fuel tank should have
just a little play to rock slightly.  The O-rings can then do what
they're made for, which is keep the ride smooth for your fuel.
 The best advice I can think of to give is to pull your engine off,
and give it a thorough cleaning.  When you put it back on, run it for
just a few minutes and inspect it for signs of fuel.  Remember, the
only place your should see partially burnt fuel is out of the exhaust.
Good luck, and keep us posted.

Sabooo
Toy: pay once and enjoy    
Hobby: keep paying and paying and paying. :)

 
 
 

RC10GT Gas leakage normal?

Post by Shane Arch » Mon, 17 Mar 1997 04:00:00


Quote:

> Ive had two fuel leaks in my GT.  The first one was caused by
>munching a head gasket, and the other was a cracked fuel tank.
>I'm not sure what the HPI .15 looks like, but did you have a hard time
>getting the MIP pipe's manifold to sit flush?  Have you had the head
>off your engine yet?  If so, check to make sure your gasket didn't
>move around on you.  I assume your Stinger pipe is the 360 degree kind
>that puts the exhaust out behind the car?  Exhaust blowout really
>shouldn't be a problem,  if that's the setup, as all the fuel blow
>through should land in the dirt and not on your chassis.  
> To avoid the fuel tank leak, make sure you don't overtighten the tank
>to the chassis.  Snug it, but that's all.  The fuel tank should have
>just a little play to rock slightly.  The O-rings can then do what
>they're made for, which is keep the ride smooth for your fuel.
> The best advice I can think of to give is to pull your engine off,
>and give it a thorough cleaning.  When you put it back on, run it for
>just a few minutes and inspect it for signs of fuel.  Remember, the
>only place your should see partially burnt fuel is out of the exhaust.

I hadn't checked the head gasket, I'll try that next I guess.  I
haven't had the head off since I put the Stinger on, and I never ran
this particular engine with the standard exhaust so I have nothing to
compare it to.  

The fuel on it -- as I could see -- wasn't even burnt fuel, it was
just coming out somewhere near the Stinger/engine mesh.  I got it as
tight as I could, and it seemed to fit on top of the port with no
problems and no leakage.  The Stinger port is the same dimension as
the standard exhaust (I measured it) and the HPI has the same port as
an OS (which is more or less the standard, I suppose).  In other
words, they should mesh together perfectly.

There wasn't any fuel coming out the tank, so I think that's okay.
I'll let you know what happens next time I run the car.

Shane