Vroom Vroom! (A "what I did to my car today" type of thread)

Simon · 22nd July 2007, 21:23

A fortunate break in this awful weather today meant I could clean the car

Whilst I had my head under the bonnet cleaning the engine bay (as you do) I stood and pondered (as I often do)... "What if...?"

The "What if" today went along the lines of "What if the opening to the airbox was bigger? It would allow more air in to the engine. Not only that I can remove the cold-air feed from the lower bumper that so far is bringing in a lot of NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD- from the road into the airbox."

I then thought "What happens if Mr.Airbox meets Mr.Hacksaw....?"

I decided to test this theory... Now I should point out I would not recommend this for the light-hearted or those of a caring disposition to original MGR parts but for those with a devious side then there is some wierd joyful feeling of hacking away at plastic with not much plan of where one is heading.

Anyhow... It turned out I hacked away the part of the lower airbox where the original shanon tube assembly joins. This created an opening approximately three times the original orifice size.

What does it acheive? Well, I dare say a marginal improvement in engine breathing and performance but this could well be the placebo effect. What is definately not a placebo effect is the big grin factor. From 0-3200rpm (or whatever the first VIS valve opening rpm is) it sounds like your usual run-of-the-mill KV6. Once that little valve opens.... oh boy! What a lurvely noise. A tad loud, but hey... that's all part of the fun!

Dave Goody · 22nd July 2007, 21:58

Quote:

Originally Posted by Simon D

A fortunate break in this awful weather today meant I could clean the car

Whilst I had my head under the bonnet cleaning the engine bay (as you do) I stood and pondered (as I often do)... "What if...?"

The "What if" today went along the lines of "What if the opening to the airbox was bigger? It would allow more air in to the engine. Not only that I can remove the cold-air feed from the lower bumper that so far is bringing in a lot of NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD- from the road into the airbox."

I then thought "What happens if Mr.Airbox meets Mr.Hacksaw....?"

I decided to test this theory... Now I should point out I would not recommend this for the light-hearted or those of a caring disposition to original MGR parts but for those with a devious side then there is some wierd joyful feeling of hacking away at plastic with not much plan of where one is heading.

Anyhow... It turned out I hacked away the part of the lower airbox where the original shanon tube assembly joins. This created an opening approximately three times the original orifice size.

What does it acheive? Well, I dare say a marginal improvement in engine breathing and performance but this could well be the placebo effect. What is definately not a placebo effect is the big grin factor. From 0-3200rpm (or whatever the first VIS valve opening rpm is) it sounds like your usual run-of-the-mill KV6. Once that little valve opens.... oh boy! What a lurvely noise. A tad loud, but hey... that's all part of the fun!

Hi Simon, can we have a picture? I want to do something similiar but normally picking up a hacksaw means I wreck something

Dave

Simon · 22nd July 2007, 22:34

I'll try and get a picture as soon as I can... The hole I cut is rather crude and a bit Heath Robinson but it does the trick. I guess the next step would be an aftermarket induction kit, such as the Piper-X cone thingy. Same noise but just looks so much nicer

MartinW · 23rd July 2007, 19:03

Exactly why I went straight to the Boy-Racer PiperX filter! As you say, very discreet when not trying, but shove the pedal and from 3700rpm upwards it sounds like a demented BTCC touring car!

Almost like a 6 cyl Scooby with a slightly off-beat warble.

PS I have a spare 160 V6 air box if anyone wishes to try this little mod of Simon's!

22nd July 2007, 21:23	#1
Simon Banned - Join Date: Nov 2006 Location: - Posts: 10,318 Thanks: 0 Thanked 4 Times in 3 Posts	Vroom Vroom! (A "what I did to my car today" type of thread) A fortunate break in this awful weather today meant I could clean the car Whilst I had my head under the bonnet cleaning the engine bay (as you do) I stood and pondered (as I often do)... "What if...?" The "What if" today went along the lines of "What if the opening to the airbox was bigger? It would allow more air in to the engine. Not only that I can remove the cold-air feed from the lower bumper that so far is bringing in a lot of NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD- from the road into the airbox." I then thought "What happens if Mr.Airbox meets Mr.Hacksaw....?" I decided to test this theory... Now I should point out I would not recommend this for the light-hearted or those of a caring disposition to original MGR parts but for those with a devious side then there is some wierd joyful feeling of hacking away at plastic with not much plan of where one is heading. Anyhow... It turned out I hacked away the part of the lower airbox where the original shanon tube assembly joins. This created an opening approximately three times the original orifice size. What does it acheive? Well, I dare say a marginal improvement in engine breathing and performance but this could well be the placebo effect. What is definately not a placebo effect is the big grin factor. From 0-3200rpm (or whatever the first VIS valve opening rpm is) it sounds like your usual run-of-the-mill KV6. Once that little valve opens.... oh boy! What a lurvely noise. A tad loud, but hey... that's all part of the fun!

22nd July 2007, 22:34	#3
Simon Banned - Join Date: Nov 2006 Location: - Posts: 10,318 Thanks: 0 Thanked 4 Times in 3 Posts	I'll try and get a picture as soon as I can... The hole I cut is rather crude and a bit Heath Robinson but it does the trick. I guess the next step would be an aftermarket induction kit, such as the Piper-X cone thingy. Same noise but just looks so much nicer

23rd July 2007, 19:03	#4
MartinW Newbie MG TF LE500 Join Date: Nov 2006 Location: Chester Posts: 2 Thanks: 0 Thanked 2 Times in 2 Posts	Exactly why I went straight to the Boy-Racer PiperX filter! As you say, very discreet when not trying, but shove the pedal and from 3700rpm upwards it sounds like a demented BTCC touring car! Almost like a 6 cyl Scooby with a slightly off-beat warble. PS I have a spare 160 V6 air box if anyone wishes to try this little mod of Simon's!