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Author 1.2 8v,what to do to up power? colledge project.
karls_car
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Registered: 8th Apr 05
Location: ashford,Middlesex
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9th Feb 06 at 16:55   View User's Profile U2U Member Reply With Quote

help please

for my motersport colledge project, we have a car to about 4 people and get to do any think we want to it. and have to c who can get the most power out of theres.. and our teem been given a 1994 1.2 8v corsa, it looks in good shape,

how i knowwe not even probly gona get more than 65bhp out of it,!!!
but these are what we been thinking about...........

can you put carbs on a 1.2 8v, ??

get fly wheel skimed?

kent cam's?

strait through exhaust, maby man fold

just drill air box with filter because i know, induction wont do nothink.

any think else rele need some help,

thanks karl,
Dean_W
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Registered: 13th Dec 05
Location: Downham Market, Norfolk
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9th Feb 06 at 16:58   View User's Profile U2U Member Reply With Quote

C20XE
karls_car
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Registered: 8th Apr 05
Location: ashford,Middlesex
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9th Feb 06 at 17:00   View User's Profile U2U Member Reply With Quote

lol i wish, no sorry for got to mention we have to keep the main block lol
MikeE
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Registered: 7th Mar 03
Location: Milton Keynes
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9th Feb 06 at 17:07   View User's Profile U2U Member Reply With Quote

very little
Kyle T
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Registered: 11th Sep 04
Location: Selby, North Yorkshire
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9th Feb 06 at 17:22   View Garage View User's Profile U2U Member Reply With Quote

Does it have to be road legal?

MOT Passable?

Get rid of Cat, straight back to the tailpipe, derestrict intake, Put a combat 2 bodykit on it to help airflow and a beesting arial to make you more streamline.

Oh, and a nice big spoiler to keep it on the road

In all seriousness though.... Good Luck


Lotus Elise 111R

Impreza WRX STi
Ry_B
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Registered: 1st Dec 05
Location: Solihull, W Mids Drives: 45BHP beast!
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9th Feb 06 at 17:37   View User's Profile U2U Member Reply With Quote

Hmm there was a guide on novaload.net i think about tuning it.

Nova SR cams etc are the way to go IIRC!
ed
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Registered: 10th Sep 03
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9th Feb 06 at 17:38   View User's Profile U2U Member Reply With Quote

Get some 40mm side draughts...
karls_car
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Registered: 8th Apr 05
Location: ashford,Middlesex
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9th Feb 06 at 18:05   View User's Profile U2U Member Reply With Quote

nope dont have 2 b legal at all,

? what you mean by de-restrict intake??

hmmmm nover sr cams?? what out of a 1.3 sr strait swap.
Adam_B
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Registered: 13th Dec 00
Location: Lancashire
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9th Feb 06 at 18:17   View User's Profile U2U Member Reply With Quote

there was a guide in total vauxhall ages ago with stuff in. basicly most bits off a nova sr 1.3 will fit.
Butler
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Registered: 2nd Jun 05
Location: London
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9th Feb 06 at 18:33   View User's Profile U2U Member Reply With Quote

your college sounds awesome!!
Jake
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Registered: 24th Jan 05
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9th Feb 06 at 18:53   View User's Profile U2U Member Reply With Quote

how will you be testing the power? round a track? 1/4 mile run?
johnny27
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Registered: 5th Feb 06
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9th Feb 06 at 20:15   View User's Profile U2U Member Reply With Quote

Tried the following on my nova 1.2

1.2 NZ block, change head to 1.2 carbed head, ported polished skimmed, use the 1.2 or 1.3 carbed heads, stay away from the spi heads and 1.4 sr.

Sportex 4-1 branch manifold. The std 4-2-1 cast iron manifolds from sr, sri and gte are shite compared to this, so even though ppl suggest it don't bother, its not worth it.

2inch piping striaght thru exhaust (no cat or middle boxes.)

Kent AST2 cam

Used to run on twin 40s. Changed to a webber carb with k&n on the 1300sr manifold, and honestly found that i lost no power what so ever over the 40s. Plus it gave the engine abit more power down low 1500 -3000rpm, thats where i needed abit of help cause the ast2 cam give a really strong powerband from 3000rpm upwards so the engine was quite lumpy below 3000rpm. But the 32/34 still provided more than enough fuel for the upper rev range

Also changed the fd in the gearbox from a 3.94 or 3.74 can't rember which, to a 4.18cwp. Was running 14/50/185 tyres with this so there was really good aceleration, would surpise u how much a of difference it makes to the feeling of the power.
In the End the car could beat mildly tuned 1.3, 1.4 sr and 1.4spi mpi. Never had it up against a 1.6mpi, but i would reckon it may keep up with it most of the way. It was lovely to drive, as soon as you floor the boot it responeded by reving its block off, it was very rev-happy, at one time i had it at over 8000rpm altough i would'nt been keen on trying it again lol but it was at 7000rpm regularly as there was plenty of power to be had up there
Obivously it was no rocket ship, it still would of been under 100bhp, after going this far on engine mods, it is'nt worth going any further on a 1.2 bottom end, not worthwhile tuning up a 1.2 bottom end, just change to a 1.4 1.6 and you can still use all the same parts as u have been using on the 1.2. All in all i can say it has been worth the work and money that went into it, was great fun coming from 45hp to to nearly 80- 90 or so.
Dave A
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Registered: 10th Dec 03
Location: County Durham
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9th Feb 06 at 20:26   View User's Profile U2U Member Reply With Quote

out of interest, what cars did the other teams get?
Wabby69
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Registered: 1st Nov 05
Location: Lincoln
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9th Feb 06 at 21:35   View User's Profile U2U Member Reply With Quote

A calibra, a porche 911, a BMW & a Morris Minor
Adge
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Registered: 28th Aug 04
Location: Lancashire
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9th Feb 06 at 21:51   View User's Profile U2U Member Reply With Quote

u got the short straw then!
Ian
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Registered: 28th Aug 99
Location: Liverpool
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9th Feb 06 at 23:56   View Garage View User's Profile U2U Member Reply With Quote

It needs CS stickers and this thread needs pics.
Adam_B
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Registered: 13th Dec 00
Location: Lancashire
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10th Feb 06 at 00:17   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by karls_car
help please

for my motersport colledge project, we have a car to about 4 people and get to do any think we want to it. and have to c who can get the most power out of theres.. and our teem been given a 1994 1.2 8v corsa, it looks in good shape,

how i knowwe not even probly gona get more than 65bhp out of it,!!!
but these are what we been thinking about...........

can you put carbs on a 1.2 8v, ??

get fly wheel skimed?

kent cam's?

strait through exhaust, maby man fold

just drill air box with filter because i know, induction wont do nothink.

any think else rele need some help,

thanks karl,


is it not biggest percentage increase? as most power would be very unfair...
CoastalCorsa
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Registered: 7th Jan 05
Location: Lancashire
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10th Feb 06 at 00:59   View User's Profile U2U Member Reply With Quote

Contact N.A.S.A and ask them for a second hand jet engine and weld it in to the roof of ya corsa

that should up the power a little

sorry bud i had a 1.2 8 valve and i would not evan consider doing any mods to it do a 1.6 conversionrun it on carbs especially if its not gotta be M.O.T`d
ed
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Registered: 10th Sep 03
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10th Feb 06 at 10:59   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by johnny27
Tried the following on my nova 1.2

1.2 NZ block, change head to 1.2 carbed head, ported polished skimmed, use the 1.2 or 1.3 carbed heads, stay away from the spi heads and 1.4 sr.

Sportex 4-1 branch manifold. The std 4-2-1 cast iron manifolds from sr, sri and gte are shite compared to this, so even though ppl suggest it don't bother, its not worth it.

2inch piping striaght thru exhaust (no cat or middle boxes.)

Kent AST2 cam

Used to run on twin 40s. Changed to a webber carb with k&n on the 1300sr manifold, and honestly found that i lost no power what so ever over the 40s. Plus it gave the engine abit more power down low 1500 -3000rpm, thats where i needed abit of help cause the ast2 cam give a really strong powerband from 3000rpm upwards so the engine was quite lumpy below 3000rpm. But the 32/34 still provided more than enough fuel for the upper rev range

Also changed the fd in the gearbox from a 3.94 or 3.74 can't rember which, to a 4.18cwp. Was running 14/50/185 tyres with this so there was really good aceleration, would surpise u how much a of difference it makes to the feeling of the power.
In the End the car could beat mildly tuned 1.3, 1.4 sr and 1.4spi mpi. Never had it up against a 1.6mpi, but i would reckon it may keep up with it most of the way. It was lovely to drive, as soon as you floor the boot it responeded by reving its block off, it was very rev-happy, at one time i had it at over 8000rpm altough i would'nt been keen on trying it again lol but it was at 7000rpm regularly as there was plenty of power to be had up there
Obivously it was no rocket ship, it still would of been under 100bhp, after going this far on engine mods, it is'nt worth going any further on a 1.2 bottom end, not worthwhile tuning up a 1.2 bottom end, just change to a 1.4 1.6 and you can still use all the same parts as u have been using on the 1.2. All in all i can say it has been worth the work and money that went into it, was great fun coming from 45hp to to nearly 80- 90 or so.
And after all that did you not think that you wasted a hell of a lot of money?
Will_Sport
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Registered: 28th Jun 04
Location: Notts
User status: Offline
10th Feb 06 at 11:10   View User's Profile U2U Member Reply With Quote

depends how ur testing it really.

don't bother with air box... just take an empty pipe straight from carbs if you get them. doesn't matter how much cack gets in there really does it. maybe put a sock/pair of tights over it just to stop leaves etc getting in
johnny27
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Registered: 5th Feb 06
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10th Feb 06 at 11:11   View User's Profile U2U Member Reply With Quote

nope, was a fun project, got all the parts dirt cheap of ebay 2nd hand. And fitted all them myself. Was more or less making a point, yes 1.2 are worth mild tuning if you can't afford insurance on a bigger engine. All that needs to be reported to the insurance company is visable things like exhaust system and maybe the twin choke webber carb. You would be quite suprised how nippy the little car was for a 1.2.
johnny27
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Registered: 5th Feb 06
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10th Feb 06 at 11:13   View User's Profile U2U Member Reply With Quote

won't bother tuning the 1.2 if you intend to keep the spi, cant get much power from it. as the carb and carbed head and so on is what the power is based on
Siberia
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Registered: 9th Oct 03
Location: Leprechaun Land Drives : Zafira GSI
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10th Feb 06 at 11:46   View User's Profile U2U Member Reply With Quote




+


_



+





=



on a serious note... i know this doesnt really answer you question but its really the only way to make em faster..
Jas
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Registered: 13th Oct 04
Location: Mid Wales
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10th Feb 06 at 14:16   View User's Profile U2U Member Reply With Quote

can you not put a 1.4 sri engine in it... they look identical...

whats the money situation who pays?
a_j_mair
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Registered: 23rd Jan 04
Location: Scotland
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10th Feb 06 at 14:20   View User's Profile U2U Member Reply With Quote

who is paying for all the modifications to be done

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