Whats next...

[sTuDeNt]

Whats the next thing I shoulf do to my engine to improve performance?

I already have weber 32/34, inlet manifold 1.3 cam from 1.4SR, will get 4-1 exhaust manifold bit later.

Cheers.

[DrivingSpanner]

answered your own Q... get a 4-1 manifold....doh

[Philsutton]

depends what your budget is, if you after big power gains then you could go for twin carbs, head work, an after market cam. These wont come cheap though.

[Ben]

can buy 40's for SR's from ?150.

[sTuDeNt]

Whats the power gains from boring out and polishing head? What do you guys think if I get the valves bored out an replaced by the bigger once?

Does anyone know what valves can I use? Heared someone mentioning using astra 16V valves. :?:

[burgo]

use 1.6 8v ones theres enough on the standard seats to have them machined out big enough

[Riggy]

as i see from your profile you have a 1.2

is there any reasons why you cant do a coversion e.g 1.3 or 1.4 or do you need the 1.2 for insurance

[sTuDeNt]

Well that one of the reasones but was just wondering how much can you tune 1.2? I guest pure interest as well! :)

P.S.

I am waiting for C20LET convertion at some stage! :wink: Probably after university.

[Mike]

id imagine bout 15-20bhp over standard if ur lucky? b4 it goes bang!

[sTuDeNt]

I gues a bit more then 20bhp. Cambridge is the man to speak to about it!

[Snowface]

my 1.3 block is over 100bhp, so 100cc less capacity (1.2 block) is only going to be 5-10bhp less than that i'm guessing.

[sTuDeNt]

You are right! 8) But its hell a lot of work! :)