MINI2

fozworth · Jan 15th, 2007, 07:24 PM

I have fitted my new GTT intercooler snoot boots to my GRS intercooler and wounderd how i can be sure i have no leaks.The car seems fine but i want to be sure ive got no loss of boost.The clamps are set over the correct areas although the wider boot does seem a little wide and therefore sits furher on the intercooler than the OE boots.but i guess if the clamps are in the correct place that wont matter.
So does anyone know,?cheers guys

uncle albert · Jan 15th, 2007, 08:50 PM

Well I suppose one way to check for minor leaks is to fit a boost gauge, but then you need to know what boost pressure you should be peaking at in the first place.

James

Loui · Jan 15th, 2007, 09:49 PM

TBH sometimes you can hear it like a faint whistling

supercoopers · Jan 16th, 2007, 04:28 AM

Put soapy water all over the seals where you suspect there are leaks. If there is an air leak you'll get bubbles and water spitting from the leak. It's pretty obvious when there are leaks! Most notable is a dodgy idle where the revs 'hunt' when coming to a stop.

Cheers,

Henry

Tonyt3 · Jan 16th, 2007, 10:40 AM

Dodgy idle is the main indicator

roland2003 · Jan 16th, 2007, 12:07 PM

Hi , yes dodgy idle or hissing or low boost are all good indicators. Another easy test is with the car at idle, spray brake cleaner or carb cleaner around the edges . Any change in idle as you spray indicates a leak. -Also useful for checking for minor leaks in the intercooler core . -Just spray all over the intercooler . If the clamps are positioned correctly the SB's wont leak even on the GRS intercooler.
Best Regards Roland GTT

Loui · Jan 17th, 2007, 10:13 PM

Quote: Originally Posted by roland2003 (original)

Hi , yes dodgy idle or hissing or low boost are all good indicators. Another easy test is with the car at idle, spray brake cleaner or carb cleaner around the edges . Any change in idle as you spray indicates a leak. -Also useful for checking for minor leaks in the intercooler core . -Just spray all over the intercooler . If the clamps are positioned correctly the SB's wont leak even on the GRS intercooler.
Best Regards Roland GTT

Roland will a supercharged car overboost like a turbo car can with boost leaks?

roland2003 · Jan 18th, 2007, 09:49 AM

No it would underboost and run like a pig at idle. SC cars at WOT use all the boost , a turbo car can overboost only if you have a leak on the actuator supply hose . (heaven for tuning possibilitys, sadly ecu cutouts reduced throttle opening limp modes etc on modern cars make it not this simple)
Best Regards Roland

Loui · Jan 21st, 2007, 01:28 PM

Quote: Originally Posted by roland2003 (original)

No it would underboost and run like a pig at idle. SC cars at WOT use all the boost , a turbo car can overboost only if you have a leak on the actuator supply hose . (heaven for tuning possibilitys, sadly ecu cutouts reduced throttle opening limp modes etc on modern cars make it not this simple)
Best Regards Roland

I thought as much

fozworth · Jan 21st, 2007, 03:02 PM

did the brake cleaner spray test today at tick over and no rise in revs at all

also sprayed the intercooler core and no rev change so alls good with my GRS intercooler fitment.Thanks Roland for the advice

roland2003 · Jan 22nd, 2007, 08:19 AM

No problem,

Best Regards Roland GTT

Richard Crofts · Jan 22nd, 2007, 11:50 AM

Quote: Originally Posted by Loui (original)

TBH sometimes you can hear it like a faint whistling

Well you'd know Loui

Sorry mate, I just couldn't resist!

So the engine hunting thing if it happens regular is it normally caused by bioost leaks?! My S has started to develop a hunting on tickover, especially after a hard blast or a high revs blast on the motorway on cruise. Is it likely that the boots (OEM) are leaking or that I have boost issues elsewhere or is it more likely to be something else?!

Its not all the time, and a little rise in the throttle and then letting off or a blip seems to make it sort itself out, at least until the next time it stops

roland2003 · Jan 22nd, 2007, 12:19 PM

..probably not, they do that anyway. Its just the electronic idle speed stabilisation.
Best Regards Roland GTT

Richard Crofts · Jan 22nd, 2007, 03:09 PM

Thought that was the most likely explanation for mine, but good to hear it possibly confirmed by someone who knows a bit more about it. The Cooper didn't really do it but the S is far more prone, especially since having the panel filter and the mani and miltek cat back on it.

Loui · Jan 26th, 2007, 06:54 PM

Quote: Originally Posted by Richard Crofts (original)

Well you'd know Loui

Sorry mate, I just couldn't resist!

Your a funny guy an thats just your face

Jan 15th, 2007, 07:24 PM	#1
fozworth MINI2 Regular My Classifieds Join Date: Aug 2006 Local Time: 10:50 PM Posts: 234 Offline	How do i know if my GTT intercooler snoot boots are leaking boost? I have fitted my new GTT intercooler snoot boots to my GRS intercooler and wounderd how i can be sure i have no leaks.The car seems fine but i want to be sure ive got no loss of boost.The clamps are set over the correct areas although the wider boot does seem a little wide and therefore sits furher on the intercooler than the OE boots.but i guess if the clamps are in the correct place that wont matter. So does anyone know,?cheers guys

Jan 15th, 2007, 09:49 PM	#3 (permalink)
Loui 230whp an counting My Classifieds Join Date: May 2002 Location: Mini Addiction Local Time: 09:50 PM Posts: 3,036 Offline	TBH sometimes you can hear it like a faint whistling WWW.MINIADDICTION.CO.UK

Jan 16th, 2007, 12:07 PM	#6 (permalink)
roland2003 MINI 2 Sponsor GT Tuning Join Date: Jan 2004 Local Time: 09:50 PM Posts: 2,731 Offline	Hi , yes dodgy idle or hissing or low boost are all good indicators. Another easy test is with the car at idle, spray brake cleaner or carb cleaner around the edges . Any change in idle as you spray indicates a leak. -Also useful for checking for minor leaks in the intercooler core . -Just spray all over the intercooler . If the clamps are positioned correctly the SB's wont leak even on the GRS intercooler. Best Regards Roland GTT www.gttuning.com

Jan 17th, 2007, 10:13 PM	#7 (permalink)
Loui 230whp an counting My Classifieds Join Date: May 2002 Location: Mini Addiction Local Time: 09:50 PM Posts: 3,036 Offline	Quote: Originally Posted by roland2003 (original) Hi , yes dodgy idle or hissing or low boost are all good indicators. Another easy test is with the car at idle, spray brake cleaner or carb cleaner around the edges . Any change in idle as you spray indicates a leak. -Also useful for checking for minor leaks in the intercooler core . -Just spray all over the intercooler . If the clamps are positioned correctly the SB's wont leak even on the GRS intercooler. Best Regards Roland GTT Roland will a supercharged car overboost like a turbo car can with boost leaks? WWW.MINIADDICTION.CO.UK

Jan 18th, 2007, 09:49 AM	#8 (permalink)
roland2003 MINI 2 Sponsor GT Tuning Join Date: Jan 2004 Local Time: 09:50 PM Posts: 2,731 Offline	No it would underboost and run like a pig at idle. SC cars at WOT use all the boost , a turbo car can overboost only if you have a leak on the actuator supply hose . (heaven for tuning possibilitys, sadly ecu cutouts reduced throttle opening limp modes etc on modern cars make it not this simple) Best Regards Roland www.gttuning.com

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Jan 15th, 2007, 08:50 PM	#2 (permalink)
uncle albert MINI2 Master Join Date: Apr 2005 Location: Hereford/Cwmbran Local Time: 09:50 PM Posts: 797 Offline	Well I suppose one way to check for minor leaks is to fit a boost gauge, but then you need to know what boost pressure you should be peaking at in the first place. James

Jan 16th, 2007, 04:28 AM	#4 (permalink)
supercoopers MINI2 Senior My Classifieds Join Date: May 2003 Local Time: 09:50 PM Posts: 537 Offline	Put soapy water all over the seals where you suspect there are leaks. If there is an air leak you'll get bubbles and water spitting from the leak. It's pretty obvious when there are leaks! Most notable is a dodgy idle where the revs 'hunt' when coming to a stop. Cheers, Henry

Jan 16th, 2007, 10:40 AM	#5 (permalink)
Tonyt3 Track addict Join Date: Jan 2003 Location: Hants Local Time: 09:50 PM Posts: 6,010 Offline	Dodgy idle is the main indicator

Jan 21st, 2007, 01:28 PM	#9 (permalink)
Loui 230whp an counting My Classifieds Join Date: May 2002 Location: Mini Addiction Local Time: 09:50 PM Posts: 3,036 Offline	Quote: Originally Posted by roland2003 (original) No it would underboost and run like a pig at idle. SC cars at WOT use all the boost , a turbo car can overboost only if you have a leak on the actuator supply hose . (heaven for tuning possibilitys, sadly ecu cutouts reduced throttle opening limp modes etc on modern cars make it not this simple) Best Regards Roland I thought as much WWW.MINIADDICTION.CO.UK

Jan 21st, 2007, 03:02 PM	#10 (permalink)
fozworth MINI2 Regular My Classifieds Join Date: Aug 2006 Local Time: 10:50 PM Posts: 234 Offline	did the brake cleaner spray test today at tick over and no rise in revs at all also sprayed the intercooler core and no rev change so alls good with my GRS intercooler fitment.Thanks Roland for the advice

Jan 22nd, 2007, 08:19 AM	#11 (permalink)
roland2003 MINI 2 Sponsor GT Tuning Join Date: Jan 2004 Local Time: 09:50 PM Posts: 2,731 Offline	No problem, Best Regards Roland GTT www.gttuning.com

Jan 22nd, 2007, 11:50 AM	#12 (permalink)
Richard Crofts THE STICK Join Date: Feb 2003 Location: Worcestershire WR15 Local Time: 09:50 PM Posts: 3,261 Offline	Quote: Originally Posted by Loui (original) TBH sometimes you can hear it like a faint whistling Well you'd know Loui Sorry mate, I just couldn't resist! So the engine hunting thing if it happens regular is it normally caused by bioost leaks?! My S has started to develop a hunting on tickover, especially after a hard blast or a high revs blast on the motorway on cruise. Is it likely that the boots (OEM) are leaking or that I have boost issues elsewhere or is it more likely to be something else?! Its not all the time, and a little rise in the throttle and then letting off or a blip seems to make it sort itself out, at least until the next time it stops

Jan 22nd, 2007, 12:19 PM	#13 (permalink)
roland2003 MINI 2 Sponsor GT Tuning Join Date: Jan 2004 Local Time: 09:50 PM Posts: 2,731 Offline	..probably not, they do that anyway. Its just the electronic idle speed stabilisation. Best Regards Roland GTT www.gttuning.com

Jan 22nd, 2007, 03:09 PM	#14 (permalink)
Richard Crofts THE STICK Join Date: Feb 2003 Location: Worcestershire WR15 Local Time: 09:50 PM Posts: 3,261 Offline	Thought that was the most likely explanation for mine, but good to hear it possibly confirmed by someone who knows a bit more about it. The Cooper didn't really do it but the S is far more prone, especially since having the panel filter and the mani and miltek cat back on it.

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Jan 26th, 2007, 06:54 PM	#15 (permalink)
Loui 230whp an counting My Classifieds Join Date: May 2002 Location: Mini Addiction Local Time: 09:50 PM Posts: 3,036 Offline	Quote: Originally Posted by Richard Crofts (original) Well you'd know Loui Sorry mate, I just couldn't resist! Your a funny guy an thats just your face WWW.MINIADDICTION.CO.UK

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