Discussion and technical advice the SW20 MR2. 3S-GTE, 3S-GE, 3S-FE etc
Anything and everything to do with maintenance, modifications and electrical is in here for the Mk2.
I'm interested in creating a side exit exhaust because it's lightweight and no where near the intercooler (going boot-mount intercooler) so intake temps should remain low.
Can anyone see any reason not to do this exhaust route?
My plan is to cut, rotate and weld the bottom of my downpipe so that the take-off is in the right direction.
See this link for the exhaust http://www.mr2.com/forums/vbpicgallery. ... iew&g=1144
Quite far down the page.
I can imagine that getting you a lot of attention as it would be stupidly loud i would have thought! If you can live with the noise then i cant see a problem!
J-1 wrote:I'm interested in creating a side exit exhaust because it's lightweight and no where near the intercooler (going boot-mount intercooler) so intake temps should remain low.
Can anyone see any reason not to do this exhaust route?
My plan is to cut, rotate and weld the bottom of my downpipe so that the take-off is in the right direction.
See this link for the exhaust http://www.mr2.com/forums/vbpicgallery. ... iew&g=1144
Quite far down the page.
A track car with a side exit exhaust? you know there are noise restrictions right? Even the quietest of exhausts can struggle and side exit is about as loud as it gets.
If you go side exit, the down pipe goes in the bin. The exhaust has to be took directly off the turbo. With regards to noise, your ears will bleed.
Take a look at the pics of my old set up. http://www.imoc.co.uk/forums/viewtopic. ... ght=mapped
This was a 4" straight through, silenced side exit and screamer. other issues are exhaust fumes in the car when in traffic, MOT time was interesting and flames from the side of the car...
A track car with a side exit exhaust? you know there are noise restrictions right? Even the quietest of exhausts can struggle and side exit is about as loud as it gets.
Wrong.
My son has a side exit and is used for sprints and is well within the MSA limit
Its all down to how its built and what silencer is used
Designer for turbo set ups on F1 cars, and Nitrous Oxide Systems of the USA in the 80s
Bob, what about what is said is wrong? Side exit exhausts being as loud as it gets? I still stand by it. Theres less room for silencers, less exhaust length so theres less attenuation. Just because you have 1 example doesnt disprove anything. You also havent said whether your sons exhaust is restrictive or extremely expensive.
And what is your sons cars actual volume and what is the MSA limit you refer to? If it had to pass a 98dB limit as sometimes the case at trackdays would you be so confident then?
The silencer is 3", no back pressure as straight through and less than 98db at 1.5m at 45 deg angle
As in all things you just have to know what you are doing
Designer for turbo set ups on F1 cars, and Nitrous Oxide Systems of the USA in the 80s
I assume you mean 0.5m away?
Turbo or NA? Decatted aswell?
Cos i run a turbo car with a mongoose which features 2 silencers and more length and that wouldnt beat a 98 limit. Hence the skepticism
Yes sorry its 0.5 m away from the tip. Yes turbo and no room for a cat. The turbo is a T3/4
I have no idea what a Mongoose system is, we only use and build things that work, we do nothing just for looks and I would think the Mongoose is the type that hangs down and is all polished.
Designer for turbo set ups on F1 cars, and Nitrous Oxide Systems of the USA in the 80s
That type of silencer can be found on ebay or places like merlin motorsport or jjc race and rally.
Come in a variety of shapes, sizes, lengths and diameters with differing pipe sizes.
I'm also planning on doing this and if the noise is too high for track use plan on fitting a y piece which will give me one silencer going hirizontally to the side exit and one going vertically down to the floor (in the front right corner of the engine bay if you were stood beihind the car).
Will help keep the temps down on the rad for the charge cooler which is mounted under the boot floor.
bri0905 wrote:That type of silencer can be found on ebay or places like merlin motorsport or jjc race and rally.
Come in a variety of shapes, sizes, lengths and diameters with differing pipe sizes.
I'm also planning on doing this and if the noise is too high for track use plan on fitting a y piece which will give me one silencer going hirizontally to the side exit and one going vertically down to the floor (in the front right corner of the engine bay if you were stood beihind the car).
Will help keep the temps down on the rad for the charge cooler which is mounted under the boot floor.
We never buy anything from ebay, we have to keep some standards
Designer for turbo set ups on F1 cars, and Nitrous Oxide Systems of the USA in the 80s
Maybe the space is deceptive when the ic is removed then. Looks like enough space for one going to the side and one going down. I'll take your word for it though having done it already though.
nowt wrong with an ebay special bob, 90% of my car is ebay bought, managed to keep the cost down quite well really.
(going boot-mount intercooler) so intake temps should remain low.
