Stupid Question, Why do you have to do this?

hpprose

hpprose

In the Dark
Joined
Feb 1, 2007
Messages
1,928
Two 3/8" Bolts Minimum Grade 5 Must Go Through Exhaust Pipe 90 Degrees from Each Other, Within 1" of Each Other, and Be Mounted As Close to the Turbocharger as Possible.

I don't get it, what do the bolts do?
 
Keeps the exhaust wheel inside the pipe and out of a spectators eye in case the turbo comes apart.

I think all the diesel sanctioning bodies should do it...pulling or racing...it just makes sense.
 
I knew it was a stupid question. I see it everywhere but just didn't know why. Thanks Richard.

By the way, how is the truck coming?
 
But if you have the exhaust exiting upward and have to have 2 bolts? Or can you just have one or the other? Seems like if your gonna run stock configured exhaust your gonna need a turn up or what is your guys solution to that? I really don't want to run a turn up at all times on the street. So what is a good solution to this? Washing my truck every other day to get the soot of my truck is not an option either and neither are stacks.
 
The exhaust needs to exit up AND have the bolts.


Buy a 90* elbow and a clamp. Slip the elbow on at the pull and take it off before you leave.

-Tom
 
Saftey First "Only you can prevent charger parts lodging into spectators eyes and face".
Brandon
 
I have seen a charger chuck the wheel out of a full exhaust. Granted there wasn't muffler to stop it, but needless to say it went out the back.
 
zstroken said:
I have seen a charger chuck the wheel out of a full exhaust. Granted there wasn't muffler to stop it, but needless to say it went out the back.
Click to expand...

That would have been something to see. The only one that I have seen was at last years Trucks on the Mountain weekend. One of the guys at Industrial lost his turbine wheel out his stack at the end of the track.
 
I always like it when the track guy goes to pick it up and throw it in the bead. I guess he thought it wouldn't be hot. :ft:
 
Yea, I know what the rules say "as close to the turbo as is practical", but before I drill into my daily drivers exhaust I'm going to ask...can I put the bolts in the elbow?
 
Yes a close as practical what does this mean? I would think anywhere you put them it's gonna slow down that turbine wheel quite a bit. It's just gonna be kinda hard getting to the elbow with a drill. It was hard enough drilling the pyro probe in the number 6 cylinder. I guess you are also gonna hvae to put them in a place they can't be seen that well so state inspectors cannot see them.
 
Kman9090 said:
Yes a close as practical what does this mean? I would think anywhere you put them it's gonna slow down that turbine wheel quite a bit. It's just gonna be kinda hard getting to the elbow with a drill. It was hard enough drilling the pyro probe in the number 6 cylinder. I guess you are also gonna hvae to put them in a place they can't be seen that well so state inspectors cannot see them.
Click to expand...

The elbow I'm talking about is the slip-on one at the end of the exhaust system (used by, those of us, with out stacks). If I can't put them in there, then I'll put then in the section of pipe where the cat use to be.
 
As close as possible to the turbine means "as close as possible to the turbine wheel". Meaning, if you can drill the elbow bolted to the exhaust housing, put it there. If you can't access the exhaust until it turns rearward at the downpipe, then put bolts there. NOT at the end of the exhaust or in the cat section. The spirit of the rule is to best contain turbo parts after they leave the turbo.
 
In the work stock class the bolts are only required if the stock exhaust has been modified. If the exhaust hasn't been modified where is the first the think that is going to slowdown/stop any parts? The Cat, or for trucks that didn't come with cats it would be the muffler. That is why I believe bolts in the cat section should be OK.
FYI, I don't have a problem with the bolt rule. But before I start drilling holes in my daily driver I'd like to know where I need to drill. Ask 3 times...drill once!
 
Yes me too. I would rather someone tell me where I can drill the holes then drill once then be in the wrong spots. Don't want to be drilling holes all over my exhaust. I am not arguing the rules either, just trying to get some facts. At our brush pulls around here you don't even need an exhaust but I do plan on pulling with DHRA some so I want to be legal. I might even throw a muffler on there so I don't have to drill holes. I would say just about anywhere you put them is gonna contain the wheel unless your running some crazy horsepower. Is this the first year for this rule?
 
The rule says as close to the charger as possible because a turbine wheel could punch through the exhaust system at any bend after the turbocharger. This rule has been in effect for years.

-Tom
 
I would just think it would have to come through alot of sheet metal but oh well. Whenever it warms I will figure out where I can get my drill in to drill the holes. The reason I ask is I know a few guys that pulled without having this done at a DHRA event. I don't know what class they pulled probably the street diesel. All they had was a chip or something little.
 
You must log in or register to reply here.
Back
Top