[Shotimes] :-(exhaust troubles)

[Ron Nottingham]

OUCH!  I had a couple break on one of my 300zxt's...  It would be impossible
to drill one out while it's on a Z-car, thank goodness I was taking the head
off anyway.  The aluminum heads can take a great deal of heat, but
concentrating the heat in that one area may warp the head.  Taking the heads
off a VG30E isn't that bad :-)  Try either a VG30ET or VG30DETT :-0

If you can drill it (a Dremel works extremely well with the angled head
attachment), use lots of lubricant, it will make it easier, then use an
EZ-Out.  I would vote against the heat, however.

Ron N. - Dalton, GA
90 SHO
ex-Nissan VG30ET guru...

----- Original Message -----
From: "James White" <greensho@crown.net>


> The AWA's Nissan truck is much like our SHOs.  Aluminum heads, Iron
> manifolds and rusty steel bolts.
>
> Trying to get the Y-pipe off of this Nissan, I had a lot of problems like
> others have had with our SHOs.  Y-pipe to manifold studs busted off, even
> with a lot of heat, so I thought that I would remove the manifold.  Bad
> idea!  One stud on each side was already broken off and just rattling
around
> in the heat shield and of course I broke another.  Couldn't hear the leak
> past the manifold gasket because the y-pipe was shot.
>
> Now I am stuck.  The new y-pipe is on, but both manifolds leak at the
heads
> due to the broken bolts.  Access is tight, but I think that I could get a
> drill and an easi-out in there, but I don't know if that would work.
Would
> like to use some heat, but how much could I heat the area around the
broken
> stud without damaging the aluminum head?
>
> Or should I just yank the heads off and get them to a good machine shop?
> But that would entail tearing into the front of the motor to get the
timing
> chain off.
>
> Was wondering if anybody has broken off manifold studs and what you did to
> repair the problem.
>
> Jim White - greensho@crown.net
> Valparaiso, Indiana
> '93  5 SPEED   275k few mods
> '95  5 SPEED   226k lots of mods
> "double clutch"  it's good for both you and your SHO
>
> ----- Original Message -----
> From: "Mark Nunnally" <manunnal@netheaven.com>
> To: "shotimes" <shotimes@autox.team.net>
> Sent: Friday, November 15, 2002 4:09 PM
> Subject: Re: [Shotimes] :-(
>
>
> > > IMHO, it all depends on how easy the y-pipe comes off. If I didn't
have
> > the
> > > 1.5 days of issues with the y-pipe and broken studs, the rest of the
job
> > > would have been easy.
> >
> >     Did a clutch last week, 2 broken rear manifold studs (one was broke
> when
> > it came here).  Spent 2 hrs torching them out, got one out in 1 piece,
the
> > other had to drill out, and re-tap.  What a pain.  Even with the
subframe
> > off and axles out of the way, still hard to work in there with any tool
to
> > get good leverage.  The rear manifold is easier to get off than the
front,
> > so it's worth it at times to just pull it off and work on it with it on
> the
> > bench.
> >
> > mark
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