Wastegate flow vented outside.

[sergei]

Hi there, I went through ltsa/lvvt docs and I could find any information on venting wastegate/exhaust flow on the side of the front bumper (just infront of the wheel). Basically they state that exhaust should be vented well outside of the passenger compartment and should not be near doors or have sharp protrusions.. Also there was a clause about exhaust having muffler, but for me it is not a big problem to add a small cannon type muffler at the end....
In short what I am trying to achieve is have "screamer pipe" venting outside, through a hole on the side of the front bumper (like some of the FWD drag cars have), I need to know legality of this? I have already asked about this a VINZ inspector, and he said it should be fine as long as it is not too loud. I need to get second opinion.

[Arthanon]

For road use, I am pretty sure that the wastegate is not aloud to be vented into the atmosphere period.

THe screamer pipe has to go back into the exhaust sytem.

[flygt4]

there is ways around it, actiondan used to run one venting out the side of the bumper on his old 4agte levin. may pay to ask him how he managed to get it wof'ed so blatently out there.

the point they often fail on is that it is technically an exhaust leak, even if its only open under load their main concern is fumes entering the cabin, and also the spraying superheated exhaust gases onto areas where there may be accumulated oil.

that said i vent mine out the bottom of the engine bay onto the ground and to the side . i just use a reasonable wof inspector and havent had any issues.
if youve watch the drifters youll often see large flames out the screamer pipes, that would be my main issue

[IH8TEC]

there is ways around it, actiondan used to run one venting out the side of the bumper on his old 4agte levin. may pay to ask him how he managed to get it wof'ed so blatently out there.

he lives in huntly

[Arthanon]

Yeah, the issue is that sometimes flames do come out of the screamer pipe... and venting this into the engine bay, and or out of the bumper isnt a tidy look...

[postfach]

That's not cool?

Sergei, you're on the shore, give Neil Fraser a call, should be able to get in touch with him somehow if you call Fraser Cars, he does certs so he should be able to give you some idea.

[Arthanon]

ON a race car yes...

[sergei]

But I don't want it to vent it inside the engine bay I want it to vent on the side of the front bumper (much like on the pic but before the wheel)

[postfach]

Neil Fraser 0800 4 CERTZ (0800 423 789)

there, did the looking for you even, call him, i'm sure he can help you

[tex]

Mate has both of his vented out the bumper light hole in the ceffy. No probs at all. The only thing they bitched about was how the seat was mounted. They said it could not be attached to the roll cage (which is manz certed) and had to be attached to the floor. Something stupid like that in which two things totally contradics each other.

TEX

[Lloyd]

Depends where you go I would imagine. The warrent stuff says that the exhaust system must be constructed to minimise risk of heat/fumes from harming the vehicle occupants which is open to opinion on what it means.

If its not exiting behind the rear most vehicle entrance (usually the boot) then fumes can be sucked back into the car which wouldn't count and risk minimisation... I think the old rules specified it as behind the rear most vehicle entrance. Would find out from where you go for warrents however

[Crucible]

You could always run the screamer-pipe with a flange on the end.
Run another pipe with a flange on the end exiting the down pipe towards the screamer pipe.

Then make a bridging pipe with a flexi that fits between the two for W.O.F time. All Mr wof man will see is a sealed system at the time of inspection

Then just make a plate or "Cap" to seal the pipe exiting the down pipe on the end and run another pipe from the screamer flange to exit where you want.

best of both worlds

[flygt4]

You could always run the screamer-pipe with a flange on the end.
Run another pipe with a flange on the end exiting the down pipe towards the screamer pipe.

Then make a bridging pipe with a flexi that fits between the two for W.O.F time. All Mr wof man will see is a sealed system at the time of inspection

Then just make a plate or "Cap" to seal the pipe exiting the down pipe on the end and run another pipe from the screamer flange to exit where you want.

best of both worlds

i drew up a diagram of an idea i had to make a switchable system by having different flanges. I'm hanging onto it just in case the external gate ever becomes an issue.