Post #1
What exactly do (or did) Longmans do to the inlet? A brief search suggests they cut it open and alter the trumpets
Is this worth getting done to a road engine, say with PT81's?
|
displaying posts 1 to 25 of 33
Pages (2): [1] 2
| Author | Subject: Longmans inlet manifold |
 JWP EFi
Turbo Legend!  Location: edinburgh Registered: 07 Mar 2010 Posts: 2,163 Status: Offline |
A brief search suggests they cut it open and alter the trumpets Is this worth getting done to a road engine, say with PT81's? |
 Posted 17th Jan 2013 at 21:18
|
|
|
bigbadbowen
Seasoned Pro  Location: Winchester Registered: 21 Nov 2003 Posts: 13,753 Status: Offline |
Post #2
Opened and removed the trumpets |
|
Posted 17th Jan 2013 at 21:33
|
|
|
JWP EFi
Turbo Legend! Location: edinburgh Registered: 07 Mar 2010 Posts: 2,163 Status: Offline |
Post #3
so realistically this could be done by any decent welder/fabricator?what benefit does it give and are there any down sides? |
|
Posted 17th Jan 2013 at 21:38
|
|
|
bigbadbowen
Seasoned Pro Location: Winchester Registered: 21 Nov 2003 Posts: 13,753 Status: Offline |
Post #4
Was done to increase airflow but they also ran standalone management so the map sensor was also removed and other sensors not needed. |
|
Posted 17th Jan 2013 at 21:43
|
|
|
JWP EFi
Turbo Legend! Location: edinburgh Registered: 07 Mar 2010 Posts: 2,163 Status: Offline |
Post #5
ok. so with mild-ish cams and remap, it wouldnt be worth it would it?Looking at ways to crack 200bhp N/A, 81's,pocketed pistons and map |
|
Posted 17th Jan 2013 at 21:46
|
|
|
eddy_gti6
Seasoned Pro  Location: Durham Registered: 20 Oct 2008 Posts: 8,716 Status: Offline |
Post #6
Wasnt this done and tested before and after mapping by someone on here? Sure i read about someone chopping the inlet open, chopping the trumpets off and welding it up and all he got was abit extra mid range? Not much benefits tho________________________________________ Clicky: [url =http://www.306gti6.com]click here[/url] remove the space between [url & = |
|
Posted 17th Jan 2013 at 21:50
|
|
|
JWP EFi
Turbo Legend! Location: edinburgh Registered: 07 Mar 2010 Posts: 2,163 Status: Offline |
Post #7
extra mid range would be good as long as there's no loss anywhere else |
|
Posted 17th Jan 2013 at 21:52
|
|
|
boost
Regular  Location: peterlee Registered: 22 Jun 2012 Posts: 245 Status: Offline |
Post #8
i heard when this is done with a new management system it can acheive more power than throttle boddies  ________________________________________ 97 1.6 xs gti6 conversion scrapped99 black rallye ( low miles and immaculate  ) soldnew owner of a 2001 diablo red hdi mile muncher swapped99 red rallye turbo sold then died  00 moonstone 1.9d (slow) |
|
Posted 17th Jan 2013 at 21:52
|
|
|
JWP EFi
Turbo Legend! Location: edinburgh Registered: 07 Mar 2010 Posts: 2,163 Status: Offline |
Post #9
if only it was as easy |
|
Posted 17th Jan 2013 at 21:54
|
|
|
bigbadbowen
Seasoned Pro Location: Winchester Registered: 21 Nov 2003 Posts: 13,753 Status: Offline |
Post #10
boost wrote: i heard when this is done with a new management system it can acheive more power than throttle boddies Yeah but you need a racing engine to go with it |
|
Posted 17th Jan 2013 at 21:56
|
|
|
JWP EFi
Turbo Legend! Location: edinburgh Registered: 07 Mar 2010 Posts: 2,163 Status: Offline |
Post #11
well said |
|
Posted 17th Jan 2013 at 21:58
|
|
|
clen666
Seasoned Pro  Location: Co. Durham Registered: 12 Feb 2009 Posts: 2,401 Status: Offline |
Post #12
That Dave bloke tried it. I think he lost a lot of midrange.Need a high revving engine to make the most of it ________________________________________ Team 'unintentional rat look' |
|
Posted 17th Jan 2013 at 22:00
|
|
|
boost
Regular Location: peterlee Registered: 22 Jun 2012 Posts: 245 Status: Offline |
Post #13
suppose youll see more gains running boost like ________________________________________ 97 1.6 xs gti6 conversion scrapped99 black rallye ( low miles and immaculate ) soldnew owner of a 2001 diablo red hdi mile muncher swapped99 red rallye turbo sold then died 00 moonstone 1.9d (slow) |
|
Posted 17th Jan 2013 at 22:00
|
|
|
JWP EFi
Turbo Legend! Location: edinburgh Registered: 07 Mar 2010 Posts: 2,163 Status: Offline |
Post #14
i doubt you'd need to do it if your running boost as engine is now - Forced inducted |
|
Posted 17th Jan 2013 at 22:03
|
|
|
eddy_gti6
Seasoned Pro Location: Durham Registered: 20 Oct 2008 Posts: 8,716 Status: Offline |
Post #15
click here________________________________________ Clicky: [url =http://www.306gti6.com]click here[/url] remove the space between [url & = |
|
Posted 17th Jan 2013 at 22:05
|
|
|
JWP EFi
Turbo Legend! Location: edinburgh Registered: 07 Mar 2010 Posts: 2,163 Status: Offline |
Post #16
that was an interesting read, seems its not worth doing unless your planning to go daft on other bits,cams, management, head work etc |
|
Posted 17th Jan 2013 at 22:24
|
|
|
gti6girl
Seasoned Pro  Location: Dartford Registered: 19 Feb 2007 Posts: 2,692 Status: Offline |
Post #17
I have a standard engine with a longmans inlet running on management and its 1/2 sec quicker than my other 205 on bodies down the quarter mileStill prefer the sound of bodies tho |
|
Posted 17th Jan 2013 at 22:33
|
|
|
JWP EFi
Turbo Legend! Location: edinburgh Registered: 07 Mar 2010 Posts: 2,163 Status: Offline |
Post #18
im guessing its quicker becuase the standard long runners aid torque, but wait a minute, their shorterif they've been de-trumpeted! this subject intrigues me |
|
Posted 17th Jan 2013 at 22:37
|
|
|
gti6girl
Seasoned Pro Location: Dartford Registered: 19 Feb 2007 Posts: 2,692 Status: Offline |
Post #19
Yeah there compleatly smooth inside with no trumpets |
|
Posted 17th Jan 2013 at 22:40
|
|
|
JWP EFi
Turbo Legend! Location: edinburgh Registered: 07 Mar 2010 Posts: 2,163 Status: Offline |
Post #20
how did it drive normally, ie other than caning it down the 1/4? loss in low to mid range torque? |
|
Posted 17th Jan 2013 at 22:42
|
|
|
phillipm
Seasoned Pro  Location: Rotherham Registered: 15 Oct 2006 Posts: 20,607 Status: Offline |
Post #21
Shorter inlet tract to match the cam specs. Probably wouldn't loose quite as much down low as Jim did with a hopped up cam too.________________________________________ - Bespoke rollcages/additions/adjustments. Half cages right up to complete custom spaceframes - MSA/FIA spec, CDS, ROPT, T45, etc - PM meEmail me! Custom-made polybushes available - need an odd size or fitment? - anything from batch work to one-off pieces. |
|
Posted 17th Jan 2013 at 22:42
|
|
|
gti6girl
Seasoned Pro Location: Dartford Registered: 19 Feb 2007 Posts: 2,692 Status: Offline |
Post #22
It's absolutely rapid. It really does pull like a train all the way through the rev range |
|
Posted 17th Jan 2013 at 22:44
|
|
|
JWP EFi
Turbo Legend! Location: edinburgh Registered: 07 Mar 2010 Posts: 2,163 Status: Offline |
Post #23
so, to summarise, unless cams are uprated then its a pointless move, yes/no?! |
|
Posted 17th Jan 2013 at 22:45
|
|
|
JWP EFi
Turbo Legend! Location: edinburgh Registered: 07 Mar 2010 Posts: 2,163 Status: Offline |
Post #24
gti6girl wrote: It's absolutely rapid. It really does pull like a train all the way through the rev range rest of engine totally standard? other than exhaust |
|
Posted 17th Jan 2013 at 22:46
|
|
|
gti6girl
Seasoned Pro Location: Dartford Registered: 19 Feb 2007 Posts: 2,692 Status: Offline |
|
|
Posted 17th Jan 2013 at 22:49
|
|
Pages (2): [1] 2
The Peugeot GTi-6 & Rallye Owners Club - ©2025 all rights reserved.
Please Note: The views and opinions found herein are those of individuals, and not of The Peugeot 306 GTi-6 & Rallye Owners Club or any individuals involved.
No responsibility is taken or assumed for any comments or statements made on, or in relation to, this website. Please see our updated privacy policy.