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Author XE inlet cam in LET
Scotty C
Member

Registered: 6th Nov 05
Location: Kidderminster Drives: 1.6 16v Sport
User status: Offline
28th Jun 08 at 00:23   View User's Profile U2U Member Reply With Quote

Have people actually seen 10+bhp off this mod? Even off a standard engine?

I'm just curious as to why it adds so much? or is there more to it than just shoving in the inlet cam? IE mapping?! pullies?

Hamish
Member

Registered: 4th Apr 05
Location: Ashtead, Surrey Drives: 100bhp Mint with Hole
User status: Offline
28th Jun 08 at 00:25   View User's Profile U2U Member Reply With Quote

ive got the feeling that it is slightly more aggressive/has a slightly longer duration so as a result there is more air in the combustion chamber
Scotty C
Member

Registered: 6th Nov 05
Location: Kidderminster Drives: 1.6 16v Sport
User status: Offline
28th Jun 08 at 00:32   View User's Profile U2U Member Reply With Quote

Thought it may be something to do with that, but why not the XE exhaust cam in then?

I think 10-12bhp is a bit optomistic TBH.
Jambo
Member

Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
User status: Offline
28th Jun 08 at 00:33   View User's Profile U2U Member Reply With Quote

depends on the state of tune tbh. Seen to add 30bhp in some cases.
Hamish
Member

Registered: 4th Apr 05
Location: Ashtead, Surrey Drives: 100bhp Mint with Hole
User status: Offline
28th Jun 08 at 00:34   View User's Profile U2U Member Reply With Quote

i think that the XE exhaust cam is too aggressive for the LET and would cause the valves to touch the pistons so is no good.
Scotty C
Member

Registered: 6th Nov 05
Location: Kidderminster Drives: 1.6 16v Sport
User status: Offline
28th Jun 08 at 00:38   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Jambo
depends on the state of tune tbh. Seen to add 30bhp in some cases.


So heavily tuned, it will add around 30bhp?! hmmm.


Jambo
Member

Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
User status: Offline
28th Jun 08 at 00:41   View User's Profile U2U Member Reply With Quote

read max-boost or ask on vaux-sport. You wont get a technical answer on here, and it does work.
Scotty C
Member

Registered: 6th Nov 05
Location: Kidderminster Drives: 1.6 16v Sport
User status: Offline
28th Jun 08 at 00:46   View User's Profile U2U Member Reply With Quote

Thanks mate
Mertin
Member

Registered: 12th Oct 05
Location: Scotland
User status: Offline
28th Jun 08 at 01:13   View User's Profile U2U Member Reply With Quote

Total vauxhall did a test with an engine and various rolling road tests with standard cams, xe inlet cam etc
TomSBD
Member

Registered: 22nd Jun 06
Location: Spalding, Lincs
User status: Offline
28th Jun 08 at 09:18   View User's Profile U2U Member Reply With Quote

you can use the exhaust cam but you will most probably need aftermarket management as you need to adjust the cam timing but with the dissy on the other end it throws the ignition timing out
av it
Member

Registered: 4th Mar 08
User status: Offline
28th Jun 08 at 09:21   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by TomSBD
you can use the exhaust cam but you will most probably need aftermarket management as you need to adjust the cam timing but with the dissy on the other end it throws the ignition timing out


would a vernier pulley sort that out
ed
Member

Registered: 10th Sep 03
User status: Offline
28th Jun 08 at 10:49   View User's Profile U2U Member Reply With Quote

Nope, as the distributor is driven by the camshaft. You could actually make it worse in theory.
Novaneil
Member

Registered: 26th Oct 06
Location: Leamington Spa
User status: Offline
28th Jun 08 at 11:31   View User's Profile U2U Member Reply With Quote

On a Standard ECU (so standard boost & Ignition settings) LET we fitted an XE Inlet Cam with a Vernier retarded 7 degrees I think it was and the engine put out 240bhp!!! So YES it does make a difference. More so on an engine running Higher boost im led to believe. As mentioned... read MAXBOOST. Great website
Luke
Member

Registered: 9th Dec 05
Location: Oxford Drives:Corsa B C20LET
User status: Offline
28th Jun 08 at 15:34   View User's Profile U2U Member Reply With Quote

http://www.vauxhall-sport-forum.com/phpBB2/xe-inlet-cam-mod-t1893.html
Tom
Member

Registered: 3rd Apr 02
Location: Wirral, Merseyside
User status: Offline
28th Jun 08 at 15:59   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by lyfie
http://www.vauxhall-sport-forum.com/phpBB2/xe-inlet-cam-mod-t1893.html


Good little read that
Luke
Member

Registered: 9th Dec 05
Location: Oxford Drives:Corsa B C20LET
User status: Offline
28th Jun 08 at 16:05   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Tom
quote:
Originally posted by lyfie
http://www.vauxhall-sport-forum.com/phpBB2/xe-inlet-cam-mod-t1893.html


Good little read that


tis a very good read & is very useful

[Edited on 28-06-2008 by lyfie]

 
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