port and polish - Corsa Sport - for Vauxhall and Opel Corsa B, Corsa C and Corsa D

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corsasriboy

Member

Registered: 23rd Mar 07
Location: leicestershire
User status: Offline

28th Apr 07 at 18:59

anyone had this done?or had a go diy?whether it was worth it or not?i've got a 1.4sri 8v and have found a company called mspd in leicester that do a fast road head for £350.anyone know any cheaper?any advice would be thankfully recieved.

willhouse

Member

Registered: 11th Jul 06
Location: Sheffield
User status: Offline

28th Apr 07 at 21:29

i would check out novaload.net matey, you will get a lot better response on there about tuning the 8v engines.

corsasriboy

Member

Registered: 23rd Mar 07
Location: leicestershire
User status: Offline

29th Apr 07 at 13:08

cheers mate.but if anyone does have info please post!lol.

RKS

Member

Registered: 2nd Mar 04
Location: Gloucestershire UK
User status: Offline

29th Apr 07 at 13:49

what other mods are you planning on doing? as a ported and polished head would really complement a throttle body or weber twin 40 carb conversion, an exhaust manifold wouldnt go a miss either

valverguy

Member

Registered: 9th May 06
User status: Offline

29th Apr 07 at 14:40

as above exhaust manifold matching of the inlet ports and twin 40's with an ignition managment etc is what you would need to go with it. looking at 1200 all in though for that little lot

corsasriboy

Member

Registered: 23rd Mar 07
Location: leicestershire
User status: Offline

29th Apr 07 at 21:25

yeah,my next mod will be a exhaust manifold (struggling to find one at the moment,i'm after a 4-2-1 the only few i have actually found to fit my car only seem to be 4-1),and tb's will be coming up a bit later in the project.want to get a good solid efficient engine to bolt all the performance mods to.

corsasriboy

Member

Registered: 23rd Mar 07
Location: leicestershire
User status: Offline

29th Apr 07 at 21:28

rikki, ive just seen your thread on your project!looks like a mean engine.wot have u done to it?where did you get your exhaust manifold from?wot sort of bhp r u getting?also where did you get your omp strutbrace from?thanks for all your help peeps!!

Dave A

USER UNDER INVESTIGATION - DO NOT TRADE

Registered: 10th Dec 03
Location: County Durham
User status: Offline

29th Apr 07 at 21:30

if you are spending all that cash why not start with a 1.6 16v, tuning costs are similar but spend the cash on the right engine and its the difference between 130 bhp and 160 bhp.

corsasriboy

Member

Registered: 23rd Mar 07
Location: leicestershire
User status: Offline

29th Apr 07 at 21:47

i did consider this route but i am a big fan of the little 8valver and (i know its pathetic) but i'm really enjoying the cheap tax and insurance!lol.just want something a bit different really.was told its a very easy engine to work on as i'm planning on doing most of the work myself and learning a few things as i go along.will prob end up with a 1.6 16v in a year or 2 but wud like to see wot i can do with this one first.thanks for the info tho!

craig_s

Member

Registered: 5th Mar 06
Location: Birmingham Drives: mk4 astra gsi
User status: Offline

29th Apr 07 at 23:30

are you local to biringham?if so ring jeff at autosprint 01675 464857

corsasriboy

Member

Registered: 23rd Mar 07
Location: leicestershire
User status: Offline

30th Apr 07 at 15:34

thanks for all the help guys!i've heard that a nova 1.3 sr head is a better head than mine and apparantly fits.can anyone confirm this??thanks in advance.

Vaux Lad

Member

Registered: 15th Dec 04
Location: Stoke-on-Trent
User status: Offline

30th Apr 07 at 15:36

Nah it aint.
You have the best of the 8v bunch of heads.

corsasriboy

Member

Registered: 23rd Mar 07
Location: leicestershire
User status: Offline

30th Apr 07 at 15:43

thanks for clearing that up!lol.and so quikly!cheers mate.at the moment i'm looking for a 2nd hand c14se head which i'm prob going to send off to have ported and polished.anyone done a diy port and polish?

craig_s

Member

Registered: 5th Mar 06
Location: Birmingham Drives: mk4 astra gsi
User status: Offline

30th Apr 07 at 16:00

i done it on my first car when i was building the engine.

corsasriboy

Member

Registered: 23rd Mar 07
Location: leicestershire
User status: Offline

30th Apr 07 at 16:41

yeah?wot shud i be doing/not doing?i'm a amateur really so talk to me like im stupid please!lol.

corsasriboy

Member

Registered: 23rd Mar 07
Location: leicestershire
User status: Offline

30th Apr 07 at 20:53

anyone?

Warren G

Member

Registered: 14th May 06
Location: Kent
User status: Offline

30th Apr 07 at 21:07

the idea is smooth all the edges and get rid of ruff casting marks

you will need a dremal and alot of pantents!

pics borrowed from robin's head

Trimmed exhaust valve guide from valve seat down -

Trimmed inlet valve guides from inlet manifold end -

Inlet side -

Exhaust side -

Combustion chamber -

Warren G

Member

Registered: 14th May 06
Location: Kent
User status: Offline

30th Apr 07 at 21:10

my head

also port out to gasket size

smooth all edges in combusion chamber

corsasriboy

Member

Registered: 23rd Mar 07
Location: leicestershire
User status: Offline

1st May 07 at 16:02

brilliant!cheers warren!just need to find a head to do it on now!lol.

Dean_W

Member

Registered: 13th Dec 05
Location: Downham Market, Norfolk
User status: Offline

1st May 07 at 17:24

Don't you also need to leave the ports slightly rough to aid in the mixing of petrol/air?

RKS

Member

Registered: 2nd Mar 04
Location: Gloucestershire UK
User status: Offline

1st May 07 at 17:55

quote:
Originally posted by corsasriboy
rikki, ive just seen your thread on your project!looks like a mean engine.wot have u done to it?where did you get your exhaust manifold from?wot sort of bhp r u getting?also where did you get your omp strutbrace from?thanks for all your help peeps!!

thanks mate

the motor hasnt had much done to it really, just the throttle bodies, ported and polished head, 4-2-1 manifold,

power figures are around 90bhp and 100lbft torque, but that was without the 4-2-1 and without the trumpets.

I got the manifold from a user on here, and the strut brace is from strutbracer.co.uk but i dont think it will fit with the standard throttle body and inlet manifold

csweatherston

Member

Registered: 16th Jan 06
Location: Devon
User status: Offline

1st May 07 at 18:17

quote:
Originally posted by Dave A
if you are spending all that cash why not start with a 1.6 16v, tuning costs are similar but spend the cash on the right engine and its the difference between 130 bhp and 160 bhp.

or a 2.0 16v, its the difference between 160 bhp and 200bhp

Warren G

Member

Registered: 14th May 06
Location: Kent
User status: Offline

1st May 07 at 18:30

quote:
Originally posted by csweatherston

quote:
Originally posted by Dave A
if you are spending all that cash why not start with a 1.6 16v, tuning costs are similar but spend the cash on the right engine and its the difference between 130 bhp and 160 bhp.

or a 2.0 16v, its the difference between 160 bhp and 200bhp

says the person whos spent loads on the 1.6