Im now starting to design a new dump pipe to go with my new turbo. Ive made a few drawings and was thinking u could have a separate pipe for the wastegate, like a sreemer pipe for the wastgate and then a full 2.5 inch elbow which could join up with the mongoose. Would this idea of a screemer pipe off a turbo with an intergated wastegate be ok? and how far does the screemer pipe need to go under the car? and what about MOT issues?
dump pipe
- Thread starter nismoboy
- Start date
For the effort involved mate, it's probably not worth the agro. Just make a 3" elbow that will take the flow from the exhaust and wastegate and connect it to a 3" downpipe.
To do it properly, you would need to put a lot of design and maths into the equation. You'll have to think about how the wastegate gas cools as it goes down it's own pipe, where to join the pipe back to the downpipe and what angle to join it back at for turbulence issues etc... Just put a separator between the wastegate outlet and exhaust outlet on the flange of the dump pipe an that should suffice
To do it properly, you would need to put a lot of design and maths into the equation. You'll have to think about how the wastegate gas cools as it goes down it's own pipe, where to join the pipe back to the downpipe and what angle to join it back at for turbulence issues etc... Just put a separator between the wastegate outlet and exhaust outlet on the flange of the dump pipe an that should suffice
A
Anonymous
Guest
yes it will.GINGA said:
i have one being made for me at the moment.
A
Anonymous
Guest
will get you photos when its done
I dont really wanna change my front pipe as i already have the mong and im happy with that, I just want to match my dump pipe to the front pipeyoungsyp said:For the effort involved mate, it's probably not worth the agro. Just make a 3" elbow that will take the flow from the exhaust and wastegate and connect it to a 3" downpipe.
To do it properly, you would need to put a lot of design and maths into the equation. You'll have to think about how the wastegate gas cools as it goes down it's own pipe, where to join the pipe back to the downpipe and what angle to join it back at for turbulence issues etc... Just put a separator between the wastegate outlet and exhaust outlet on the flange of the dump pipe an that should suffice
ie( a nice flowing 2.5 inch dumpipe) so its all the same size.
Let me rephrase that then, unless you can totally seal off the wastegate outlet from the turbine outlet (very hard) you'll get exhaust gases perminantly exiting via the screamer pipe it'll sound crap for starters, probably won't help performance and will fail a Mot aswell.MashRock said:
A
Anonymous
Guest
Ahh yes. the seal can be done. but is rather tricky as it has to be as tight as a nun's cunt.. i'm in australia so mot dosnt mean much to me.
going to see how it goes soon.
i think maybe even use an external gate and go about it that way as i notices some tiny cracks when i had my turbo off last time.
i'll have to wait and see what happens
going to see how it goes soon.
i think maybe even use an external gate and go about it that way as i notices some tiny cracks when i had my turbo off last time.
i'll have to wait and see what happens
Mr GTiR
New Member
bollox, i'm having one made (3" twin dump pipe) and was going to have the wastgate pipe vented to atmoshpire.GINGA said:
Can i ask how it would affect the MOT casue the wastegate only opens on a gear change or you back off the throttle. As far as i know it won't open when the car is sat at idel or am i worng :?: :?:
skiddusmarkus
Active Member
He means that gases exiting past the exhaust turbine will find their way into the wastegate side of the pipe unless the seal is perfect Andy.