sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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i know that the 1.2 can be easily tuned from like 1.3 manifold and carb and gte cam, but is there "bolt on" mods like that for the 1.3sr and what sort of gains are we talking?
thanks
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Scotty C
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Registered: 6th Nov 05
Location: Kidderminster Drives: 1.6 16v Sport
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1.4 SR head, inlet, and manifold.
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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and carb? whats the difference to the head?
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andyc1234
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Registered: 7th Nov 06
Location: Lancashire
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stick a 1.6 carb on 1.6 cam same as a 1.2 really
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Scotty C
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Registered: 6th Nov 05
Location: Kidderminster Drives: 1.6 16v Sport
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quote: Originally posted by sand-eel
and carb? whats the difference to the head?
Bigger ports.
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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take it you CAN'T put a 1.4sr head on and a 1.6 carb and cam?
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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yes/no/maybe/i don't know
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Limecat
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Registered: 25th Jun 05
Location: The Internet
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Sorry but why bother? For the cost of these uprated SR mods you could buy a better small block lump that will be a better starting point than a 1.2 which wil always be tripe.
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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eh? it's a 1.3 though
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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what do you mean anyway.....get an sri instead?
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Superlite Ltd.
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Registered: 9th Jan 07
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quote: Originally posted by andyc1234
stick a 1.6 carb on 1.6 cam same as a 1.2 really
thats what i'd do
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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doesn't it over fuel then? or does the cam give the extra air?
[Edited on 19-02-2008 by sand-eel]
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Superlite Ltd.
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Registered: 9th Jan 07
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People seem so scared of cars over fueling these days. A lean mix is more dangerous tbh
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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yeah but you lose power overfueling usually and does less to the gallon
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Superlite Ltd.
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Registered: 9th Jan 07
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You lose power do you
Any competition engine runs a lambda less than 1
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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a 1.3 8v is not a competition engine i'm sure competition engines over fuel for cooling purposes.
i'm talking much overfueling so much it bogs down etc
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Superlite Ltd.
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Registered: 9th Jan 07
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I had a 1.8 injector in a 1.4 SPI before. Just made the revs take longer to drop really.
1.6 cam might be a good idea mind
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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i'm just seeing because i'm dying for a 1.3sr nova don't usually like mk1's but there something about white 1.3sr's
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Vaux Lad
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Registered: 15th Dec 04
Location: Stoke-on-Trent
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quote: Originally posted by Monster
1.4 SR head, inlet, and manifold.
That would loose you about 10bhp
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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i thought the 1.2 and 1.3 heads were better because the 1.4carbs are square ports and the 1.2 and 1.3's are nice and oval
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Vaux Lad
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Registered: 15th Dec 04
Location: Stoke-on-Trent
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Aye
Fitting a 1.4sr head will loose you a proven 8-10bhp.
You could fit a weber 32/34dtml carb.
Are you using the engine for autocross or something? Restricted to a single carb?
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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na i'm just interested (filling up my vauxhall knowledge) because i haven't heard much in the way of tuning 1.3's only 1.2's but i suppose they are nearly the same anyway so tuning must be similar.
is a 32/34 carb from an astra 1.6? and i presume you need the inlet too? but the ports will be different......
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Superlite Ltd.
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Registered: 9th Jan 07
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2x webbers and a manifold to fit them would be nice
but thats not cheap
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Vaux Lad
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Registered: 15th Dec 04
Location: Stoke-on-Trent
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A 32/34 is a replacement for the standard 1300/1400Sr carb.
As it has a mechanical second choke, instead of the vacuum operated one on the standard carb.
I was just insterested in why your fitting/have fitted a 1300, and want to tune that, when a standard 1600 mpi 8v will be quicker and cost £50....
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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i haven't done anything i'am just filling up with knowledge as above ^^^
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