Coscast Head

[ant_tay]

is there any way of telling if a redtop has a coscast head whilst it is still attached to the rest of the engine

[Lee H]

Yes look at the casting where the exhaust manfiold heat shield bolts on. On GM heads they are round whereas the coscast ones are different.

GM

http://i192.photobucket.com/albums/z163/Lee_H25/006-5.jpg

Coscast http://i192.photobucket.com/albums/z163/Lee_H25/enginebay.jpg

[BIGS]

http://www.sbdev.co.uk/Main.htm

click on the vauxhall picture then go to the bottom of the page and click on

View the full range of our Vauxhall kits & parts (http://www.sbdev.co.uk/Parts%20Catalogue.htm)

Then click on

Heads & modifications (http://www.sbdev.co.uk/Head_Components/Head_Mods/Heads_Mods.htm)

then under the pic of the head it will say

Coscast Head, please click here (http://www.sbdev.co.uk/Info_sheets/Cylinder%20heads/Coscast_heads.htm) for how to identify a Coscast Head

Then click :thumb:

[ant_tay]

so is this a coscast head

http://i136.photobucket.com/albums/q196/astranin/28022009395.jpg

[BIGS]

you cant tell from that, if it hasnt got a core plug or has it stamped under the head it is

[Lee H]

so is this a coscast head

http://i136.photobucket.com/albums/q196/astranin/28022009395.jpg

I'd say no.

[ant_tay]

how come

[Lee H]

Look at my pics and then make your mind up. Just above the exhaust manifold.

[ant_tay]

the pic is not really clear enough to tell but i know what bits you are on about

[Dinoman]

is there any way of telling if a redtop has a coscast head whilst it is still attached to the rest of the engine

Hi, the easiest way to tell is if it is a Coscast the there is no core plugs under the dizzy, if there is a core plug under dizzy then it is a GM head, Regards DM

[Paul]

also if theres a ledge by the dizzy its coscast, if not its KS.

[ant_tay]

can someone get me a pic of the core plug and where it is so i can have a look

[Paul]

http://www.max-boost.co.uk/max-boost/internet_articles/Astra-mk2_com%20-%2020XE%20Coscast%20Cylinder%20head%20dossier_file s/cos2.jpg

http://www.topbuzz1.carenthusiasts.co.uk/info/porous_heads/b008.jpg

http://www.topbuzz.co.uk/info/porous_heads/s005.jpg

Paul

[John]

Check through the exhaust manifold with a mirror, between 2 and 3 for the coscast stamp, as paul has pointed out above.

[philip]

the stamp is under number 3 cylinder.

if smooth = gm

if feel some sort of text = coscast

[Pistol Pete]

Surely checking for a core plug is the easiest way?!

[ant_tay]

ok thanks alot guys will check all those thing when i pick the car up

[Adam]

Surely checking for a core plug is the easiest way?!
Surely not spending £250 on a head thats no better than a £40 KS(gm) one is the easiest way lol

[ant_tay]

no one is buying a head mate i have bought a cav sri 16v and was wondering how i could check to see if it has a coscast head thats all

[Adam]

My reply wasnt particularly aimed at you, just a general thought.....



Pauls pics should show you all you need to know :)

[ant_tay]

ahh ok sorry mate thanks for your input thow

[Pistol Pete]

Surely not spending £250 on a head thats no better than a £40 KS(gm) one is the easiest way lol

Surely paying £250 for a coscast head is daylight robbery lol and very stoooopid!

[Adam]

Thats the going rate for them!!

[Pistol Pete]

lol serious? I dont remember paying that for mine.

[philip]

i bought a full 20xe for £200 i sold head for £150 and rods/pistons for £50, so cant complain.

then sold another head for £180.

but some people will pay £300 odd for head if really want them....they look good on the 'spec' sheetslol