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Author corsa xe bhp figures
nikkijamie
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Registered: 26th Sep 07
Location: dartford
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26th Sep 07 at 18:49   View User's Profile U2U Member Reply With Quote

Just wondering what peoples n/a xe bhp figures are and what's the most made from a n/a one
STEvieXE
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Registered: 21st Jan 03
Location: Ballymena N.I.
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26th Sep 07 at 18:51   View User's Profile U2U Member Reply With Quote

standard are around 150

THINK around 300 is as far as the xe will go n/a
nikkijamie
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Registered: 26th Sep 07
Location: dartford
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26th Sep 07 at 18:53   View User's Profile U2U Member Reply With Quote

just want to find out what other members cars are putting out
phil_sutton
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Registered: 8th Sep 07
Location: Nottingham
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26th Sep 07 at 18:55   View User's Profile U2U Member Reply With Quote

I would say you can get it to around 400-500bhp without the use of a turbo an not alot of money. However most people will class nitrous as cheating which is really anal to be honest.
Nic Barnes
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Registered: 5th Apr 04
Location: nowhere near ginger people
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26th Sep 07 at 18:56   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by phil_sutton
I would say you can get it to around 400-500bhp without the use of a turbo an not alot of money. However most people will class nitrous as cheating which is really anal to be honest.


i agree phil, nitrous is the way forward literraly
Dave A
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Registered: 10th Dec 03
Location: County Durham
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26th Sep 07 at 18:58   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by phil_sutton
I would say you can get it to around 400-500bhp without the use of a turbo an not alot of money.



400-500 without a lot of money? without nitrous the most anyone has managed is around 299 bhp (as far as I know) and it was built by SBD

[Edited on 26-09-2007 by Dave A]
nikkijamie
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Registered: 26th Sep 07
Location: dartford
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26th Sep 07 at 18:59   View User's Profile U2U Member Reply With Quote

that's not classed as naturally aspirated though
Nic Barnes
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Registered: 5th Apr 04
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26th Sep 07 at 18:59   View User's Profile U2U Member Reply With Quote

300 ish bhp will cost you over 10 grand of engine
Dave A
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26th Sep 07 at 19:01   View User's Profile U2U Member Reply With Quote

12k actually nic. thats what SBD charged for the 299bhp one they built.
Nic Barnes
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26th Sep 07 at 19:04   View User's Profile U2U Member Reply With Quote

its a lot of cash, but its a lot of engine.
Dave A
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26th Sep 07 at 19:05   View User's Profile U2U Member Reply With Quote

only suitable for competition use when you are limited to 2000cc really. theres not many other n/a 2000cc engines that will see those figures
phil_sutton
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Registered: 8th Sep 07
Location: Nottingham
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26th Sep 07 at 19:05   View User's Profile U2U Member Reply With Quote

In my eyes nitrous is not classed as Forced Induction as its doesnt force the air in. And for 1-2k you could have it near 400 instead of 12k. Dont know about anyone else but I know what Id rather do.
Nic Barnes
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26th Sep 07 at 19:07   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Dave A
only suitable for competition use when you are limited to 2000cc really. theres not many other n/a 2000cc engines that will see those figures


especially none from 1987
STEvieXE
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Registered: 21st Jan 03
Location: Ballymena N.I.
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26th Sep 07 at 19:11   View User's Profile U2U Member Reply With Quote

wot kind of spec would it need for 300 bhp??

something similar to your 1.6 dave?
Nic Barnes
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26th Sep 07 at 19:12   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by STEvieXE
wot kind of spec would it need for 300 bhp??

something similar to your 1.6 dave?


dry sumped, solid lifters, steel crank etc. look on sbd site, can find info on it.
phil_sutton
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Registered: 8th Sep 07
Location: Nottingham
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26th Sep 07 at 19:17   View User's Profile U2U Member Reply With Quote

and about a 13k rev limit , will need to do some serious rpm to get that power.
Dave A
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26th Sep 07 at 19:21   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by STEvieXE
wot kind of spec would it need for 300 bhp??

something similar to your 1.6 dave?



yes, but with a dry sump and 11k rpm. dont expect it to last long between rebuilds either
drunkenfool
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Registered: 7th Feb 03
Location: Hereford Drives: Audi R8 V8
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26th Sep 07 at 22:20   View User's Profile U2U Member Reply With Quote

This is what mine is running at the moment, but i need to get the cam timing done, better manifold, take teh rev limit up to 7750 and get it remapped again, then i should be around 210ish.

nikkijamie
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Registered: 26th Sep 07
Location: dartford
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27th Sep 07 at 12:31   View User's Profile U2U Member Reply With Quote

Mines running 226bhp at the moment but need to lower the compression ratio so i can advance ignition timming as it's only on 20 degrees advanced at the moment, but just wanted to see what other peoples were putting out.
Vaux Lad
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Registered: 15th Dec 04
Location: Stoke-on-Trent
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27th Sep 07 at 12:43   View User's Profile U2U Member Reply With Quote

Nitrous is still kind of NA, the engine sucks in the nitrous, it aint forced in.
But its then letting the engine burn more air/fuel than it naturally could...
Vaux Lad
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Registered: 15th Dec 04
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27th Sep 07 at 12:43   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by nikkijamie
Mines running 226bhp at the moment but need to lower the compression ratio so i can advance ignition timming as it's only on 20 degrees advanced at the moment, but just wanted to see what other peoples were putting out.

What engine spec?

For good power NA, revs and high compression is required...
nikkijamie
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Registered: 26th Sep 07
Location: dartford
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27th Sep 07 at 13:09   View User's Profile U2U Member Reply With Quote

steel rods, accralite 87mm pistons, dry sumped,weber 45's,qed 450 cams,wasted stem valves,solid lifters, double valve springs, mbe 3d mappable ignition, running 13.5:1 compression, 8250 rev limit
Dave A
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27th Sep 07 at 13:11   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by nikkijamie
Mines running 226bhp at the moment but need to lower the compression ratio so i can advance ignition timming as it's only on 20 degrees advanced at the moment, but just wanted to see what other peoples were putting out.



more ignition and higher compression is a lot better for power. also you cant advance ignition further than MBT anyway so the lower compression wont help in any way at all!
nikkijamie
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Registered: 26th Sep 07
Location: dartford
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27th Sep 07 at 13:18   View User's Profile U2U Member Reply With Quote

was told to lower it to about 12.5:1 and advance timming to 28 or 30 degrees when i get it set up, need a port and polish aswell but can't afford it.
Dave A
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27th Sep 07 at 14:53   View User's Profile U2U Member Reply With Quote

12.5:1 Compression is rather high. if you need to lower it to that what are you on now

also ignore the 'time it to 28 degrees bla bla bla" you need to set ignition advance on a dyno with mappable management under varying loads to the point of MBT (minimum best timing) i.e the point at which you stop gaining power as you advance ignition but before you get knock.

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